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2 changes: 1 addition & 1 deletion src/Microsoft.Data.Analysis/DataFrame.Join.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -30,7 +30,7 @@ private void SetSuffixForDuplicatedColumnNames(DataFrame dataFrame, DataFrameCol
{
// Pre-existing column. Change name
DataFrameColumn existingColumn = dataFrame.Columns[index];
dataFrame._columnCollection.SetColumnName(existingColumn, existingColumn.Name + leftSuffix);
existingColumn.SetName(existingColumn.Name + leftSuffix);
column.SetName(column.Name + rightSuffix);
index = dataFrame._columnCollection.IndexOf(column.Name);
}
Expand Down
4 changes: 2 additions & 2 deletions src/Microsoft.Data.Analysis/DataFrame.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -301,7 +301,7 @@ public DataFrame AddPrefix(string prefix, bool inPlace = false)
for (int i = 0; i < df.Columns.Count; i++)
{
DataFrameColumn column = df.Columns[i];
df._columnCollection.SetColumnName(column, prefix + column.Name);
column.SetName(prefix + column.Name);
df.OnColumnsChanged();
}
return df;
Expand All@@ -316,7 +316,7 @@ public DataFrame AddSuffix(string suffix, bool inPlace = false)
for (int i = 0; i < df.Columns.Count; i++)
{
DataFrameColumn column = df.Columns[i];
df._columnCollection.SetColumnName(column, column.Name + suffix);
column.SetName(column.Name + suffix);
df.OnColumnsChanged();
}
return df;
Expand Down
42 changes: 34 additions & 8 deletions src/Microsoft.Data.Analysis/DataFrameColumn.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -84,6 +84,26 @@ protected set
}
}

// List of ColumnCollections that owns the column
// Current API allows column to be added into multiple dataframes, that's why the list is needed
private readonly List<DataFrameColumnCollection> _ownerColumnCollections = new();

internal void AddOwner(DataFrameColumnCollection columCollection)
{
if (!_ownerColumnCollections.Contains(columCollection))
{
_ownerColumnCollections.Add(columCollection);
}
}

internal void RemoveOwner(DataFrameColumnCollection columCollection)
{
if (_ownerColumnCollections.Contains(columCollection))
{
_ownerColumnCollections.Remove(columCollection);
}
}

/// <summary>
/// The number of <see langword="null" /> values in this column.
/// </summary>
Expand All@@ -95,24 +115,30 @@ public abstract long NullCount
private string _name;

/// <summary>
/// The name of this column.
/// The column name.
/// </summary>
public string Name => _name;

/// <summary>
/// Updates the name of this column.
/// Updates the column name.
/// </summary>
/// <param name="newName">The new name.</param>
/// <param name="dataFrame">If passed in, update the column name in <see cref="DataFrame.Columns"/></param>
public void SetName(string newName, DataFrame dataFrame = null)
public void SetName(string newName)
{
if (!(dataFrame is null))
{
dataFrame.Columns.SetColumnName(this, newName);
}
foreach (var owner in _ownerColumnCollections)
owner.UpdateColumnNameMetadata(this, newName);

_name = newName;
}

/// <summary>
/// Updates the name of this column.
/// </summary>
/// <param name="newName">The new name.</param>
/// <param name="dataFrame">Ignored (for backward compatibility)</param>
[Obsolete]
public void SetName(string newName, DataFrame dataFrame) => SetName(newName);

/// <summary>
/// The type of data this column holds.
/// </summary>
Expand Down
23 changes: 21 additions & 2 deletions src/Microsoft.Data.Analysis/DataFrameColumnCollection.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -38,11 +38,23 @@ internal IReadOnlyList<string> GetColumnNames()
return ret;
}

public void RenameColumn(string currentName, string newName)
{
var column = this[currentName];
column.SetName(newName);
}

[Obsolete]
public void SetColumnName(DataFrameColumn column, string newName)
{
column.SetName(newName);
}

//Updates column's metadata (is used as a callback from Column class)
internal void UpdateColumnNameMetadata(DataFrameColumn column, string newName)
{
string currentName = column.Name;
int currentIndex = _columnNameToIndexDictionary[currentName];
column.SetName(newName);
_columnNameToIndexDictionary.Remove(currentName);
_columnNameToIndexDictionary.Add(newName, currentIndex);
ColumnsChanged?.Invoke();
Expand DownExpand Up@@ -75,6 +87,8 @@ protected override void InsertItem(int columnIndex, DataFrameColumn column)
throw new ArgumentException(string.Format(Strings.DuplicateColumnName, column.Name), nameof(column));
}

column.AddOwner(this);

RowCount = column.Length;

_columnNameToIndexDictionary[column.Name] = columnIndex;
Expand All@@ -98,9 +112,13 @@ protected override void SetItem(int columnIndex, DataFrameColumn column)
{
throw new ArgumentException(string.Format(Strings.DuplicateColumnName, column.Name), nameof(column));
}

_columnNameToIndexDictionary.Remove(this[columnIndex].Name);
_columnNameToIndexDictionary[column.Name] = columnIndex;

this[columnIndex].RemoveOwner(this);
base.SetItem(columnIndex, column);

ColumnsChanged?.Invoke();
}

Expand All@@ -111,6 +129,8 @@ protected override void RemoveItem(int columnIndex)
{
_columnNameToIndexDictionary[this[i].Name]--;
}

this[columnIndex].RemoveOwner(this);
base.RemoveItem(columnIndex);

//Reset RowCount if the last column was removed and dataframe is empty
Expand DownExpand Up@@ -474,6 +494,5 @@ public UInt16DataFrameColumn GetUInt16Column(string name)

throw new ArgumentException(string.Format(Strings.BadColumnCast, column.DataType, typeof(UInt16)));
}

}
}
38 changes: 38 additions & 0 deletions test/Microsoft.Data.Analysis.Tests/DataFrameTests.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -388,6 +388,44 @@ public void ClearColumnsTests()
Assert.Equal(0, dataFrame.Columns.LongCount());
}

[Fact]
public void RenameColumnWithSetNameTests()
{
StringDataFrameColumn city = new StringDataFrameColumn("City", new string[] { "London", "Berlin" });
PrimitiveDataFrameColumn<int> temp = new PrimitiveDataFrameColumn<int>("Temperature", new int[] { 12, 13 });

DataFrame dataframe = new DataFrame(city, temp);

// Change the name of the column:
dataframe["City"].SetName("Town");
var renamedColumn = dataframe["Town"];

Assert.Throws<ArgumentException>(() => dataframe["City"]);

Assert.NotNull(renamedColumn);
Assert.Equal("Town", renamedColumn.Name);
Assert.True(ReferenceEquals(city, renamedColumn));
}

[Fact]
public void RenameColumnWithRenameColumnTests()
{
StringDataFrameColumn city = new StringDataFrameColumn("City", new string[] { "London", "Berlin" });
PrimitiveDataFrameColumn<int> temp = new PrimitiveDataFrameColumn<int>("Temperature", new int[] { 12, 13 });

DataFrame dataframe = new DataFrame(city, temp);

// Change the name of the column:
dataframe.Columns.RenameColumn("City", "Town");
var renamedColumn = dataframe["Town"];

Assert.Throws<ArgumentException>(() => dataframe["City"]);

Assert.NotNull(renamedColumn);
Assert.Equal("Town", renamedColumn.Name);
Assert.True(ReferenceEquals(city, renamedColumn));
}

[Fact]
public void TestBinaryOperations()
{
Expand Down
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
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2 changes: 1 addition & 1 deletion src/Microsoft.Data.Analysis/DataFrame.Join.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -30,7 +30,7 @@ private void SetSuffixForDuplicatedColumnNames(DataFrame dataFrame, DataFrameCol
{
// Pre-existing column. Change name
DataFrameColumn existingColumn = dataFrame.Columns[index];
dataFrame._columnCollection.SetColumnName(existingColumn, existingColumn.Name + leftSuffix);
existingColumn.SetName(existingColumn.Name + leftSuffix);
column.SetName(column.Name + rightSuffix);
index = dataFrame._columnCollection.IndexOf(column.Name);
}
Expand Down
4 changes: 2 additions & 2 deletions src/Microsoft.Data.Analysis/DataFrame.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -301,7 +301,7 @@ public DataFrame AddPrefix(string prefix, bool inPlace = false)
for (int i = 0; i < df.Columns.Count; i++)
{
DataFrameColumn column = df.Columns[i];
df._columnCollection.SetColumnName(column, prefix + column.Name);
column.SetName(prefix + column.Name);
df.OnColumnsChanged();
}
return df;
Expand All@@ -316,7 +316,7 @@ public DataFrame AddSuffix(string suffix, bool inPlace = false)
for (int i = 0; i < df.Columns.Count; i++)
{
DataFrameColumn column = df.Columns[i];
df._columnCollection.SetColumnName(column, column.Name + suffix);
column.SetName(column.Name + suffix);
df.OnColumnsChanged();
}
return df;
Expand Down
42 changes: 34 additions & 8 deletions src/Microsoft.Data.Analysis/DataFrameColumn.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -84,6 +84,26 @@ protected set
}
}

// List of ColumnCollections that owns the column
// Current API allows column to be added into multiple dataframes, that's why the list is needed
private readonly List<DataFrameColumnCollection> _ownerColumnCollections = new();

internal void AddOwner(DataFrameColumnCollection columCollection)
{
if (!_ownerColumnCollections.Contains(columCollection))
{
_ownerColumnCollections.Add(columCollection);
}
}

internal void RemoveOwner(DataFrameColumnCollection columCollection)
{
if (_ownerColumnCollections.Contains(columCollection))
{
_ownerColumnCollections.Remove(columCollection);
}
}

/// <summary>
/// The number of <see langword="null" /> values in this column.
/// </summary>
Expand All@@ -95,24 +115,30 @@ public abstract long NullCount
private string _name;

/// <summary>
/// The name of this column.
/// The column name.
/// </summary>
public string Name => _name;

/// <summary>
/// Updates the name of this column.
/// Updates the column name.
/// </summary>
/// <param name="newName">The new name.</param>
/// <param name="dataFrame">If passed in, update the column name in <see cref="DataFrame.Columns"/></param>
public void SetName(string newName, DataFrame dataFrame = null)
public void SetName(string newName)
{
if (!(dataFrame is null))
{
dataFrame.Columns.SetColumnName(this, newName);
}
foreach (var owner in _ownerColumnCollections)
owner.UpdateColumnNameMetadata(this, newName);

_name = newName;
}

/// <summary>
/// Updates the name of this column.
/// </summary>
/// <param name="newName">The new name.</param>
/// <param name="dataFrame">Ignored (for backward compatibility)</param>
[Obsolete]
public void SetName(string newName, DataFrame dataFrame) => SetName(newName);

/// <summary>
/// The type of data this column holds.
/// </summary>
Expand Down
23 changes: 21 additions & 2 deletions src/Microsoft.Data.Analysis/DataFrameColumnCollection.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -38,11 +38,23 @@ internal IReadOnlyList<string> GetColumnNames()
return ret;
}

public void RenameColumn(string currentName, string newName)
{
var column = this[currentName];
column.SetName(newName);
}

[Obsolete]
public void SetColumnName(DataFrameColumn column, string newName)
{
column.SetName(newName);
}

//Updates column's metadata (is used as a callback from Column class)
internal void UpdateColumnNameMetadata(DataFrameColumn column, string newName)
{
string currentName = column.Name;
int currentIndex = _columnNameToIndexDictionary[currentName];
column.SetName(newName);
_columnNameToIndexDictionary.Remove(currentName);
_columnNameToIndexDictionary.Add(newName, currentIndex);
ColumnsChanged?.Invoke();
Expand DownExpand Up@@ -75,6 +87,8 @@ protected override void InsertItem(int columnIndex, DataFrameColumn column)
throw new ArgumentException(string.Format(Strings.DuplicateColumnName, column.Name), nameof(column));
}

column.AddOwner(this);

RowCount = column.Length;

_columnNameToIndexDictionary[column.Name] = columnIndex;
Expand All@@ -98,9 +112,13 @@ protected override void SetItem(int columnIndex, DataFrameColumn column)
{
throw new ArgumentException(string.Format(Strings.DuplicateColumnName, column.Name), nameof(column));
}

_columnNameToIndexDictionary.Remove(this[columnIndex].Name);
_columnNameToIndexDictionary[column.Name] = columnIndex;

this[columnIndex].RemoveOwner(this);
base.SetItem(columnIndex, column);

ColumnsChanged?.Invoke();
}

Expand All@@ -111,6 +129,8 @@ protected override void RemoveItem(int columnIndex)
{
_columnNameToIndexDictionary[this[i].Name]--;
}

this[columnIndex].RemoveOwner(this);
base.RemoveItem(columnIndex);

//Reset RowCount if the last column was removed and dataframe is empty
Expand DownExpand Up@@ -474,6 +494,5 @@ public UInt16DataFrameColumn GetUInt16Column(string name)

throw new ArgumentException(string.Format(Strings.BadColumnCast, column.DataType, typeof(UInt16)));
}

}
}
38 changes: 38 additions & 0 deletions test/Microsoft.Data.Analysis.Tests/DataFrameTests.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -388,6 +388,44 @@ public void ClearColumnsTests()
Assert.Equal(0, dataFrame.Columns.LongCount());
}

[Fact]
public void RenameColumnWithSetNameTests()
{
StringDataFrameColumn city = new StringDataFrameColumn("City", new string[] { "London", "Berlin" });
PrimitiveDataFrameColumn<int> temp = new PrimitiveDataFrameColumn<int>("Temperature", new int[] { 12, 13 });

DataFrame dataframe = new DataFrame(city, temp);

// Change the name of the column:
dataframe["City"].SetName("Town");
var renamedColumn = dataframe["Town"];

Assert.Throws<ArgumentException>(() => dataframe["City"]);

Assert.NotNull(renamedColumn);
Assert.Equal("Town", renamedColumn.Name);
Assert.True(ReferenceEquals(city, renamedColumn));
}

[Fact]
public void RenameColumnWithRenameColumnTests()
{
StringDataFrameColumn city = new StringDataFrameColumn("City", new string[] { "London", "Berlin" });
PrimitiveDataFrameColumn<int> temp = new PrimitiveDataFrameColumn<int>("Temperature", new int[] { 12, 13 });

DataFrame dataframe = new DataFrame(city, temp);

// Change the name of the column:
dataframe.Columns.RenameColumn("City", "Town");
var renamedColumn = dataframe["Town"];

Assert.Throws<ArgumentException>(() => dataframe["City"]);

Assert.NotNull(renamedColumn);
Assert.Equal("Town", renamedColumn.Name);
Assert.True(ReferenceEquals(city, renamedColumn));
}

[Fact]
public void TestBinaryOperations()
{
Expand Down
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix"); } } catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
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2 changes: 1 addition & 1 deletion src/Microsoft.Data.Analysis/DataFrame.Join.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -30,7 +30,7 @@ private void SetSuffixForDuplicatedColumnNames(DataFrame dataFrame, DataFrameCol
{
// Pre-existing column. Change name
DataFrameColumn existingColumn = dataFrame.Columns[index];
dataFrame._columnCollection.SetColumnName(existingColumn, existingColumn.Name + leftSuffix);
existingColumn.SetName(existingColumn.Name + leftSuffix);
column.SetName(column.Name + rightSuffix);
index = dataFrame._columnCollection.IndexOf(column.Name);
}
Expand Down
4 changes: 2 additions & 2 deletions src/Microsoft.Data.Analysis/DataFrame.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -301,7 +301,7 @@ public DataFrame AddPrefix(string prefix, bool inPlace = false)
for (int i = 0; i < df.Columns.Count; i++)
{
DataFrameColumn column = df.Columns[i];
df._columnCollection.SetColumnName(column, prefix + column.Name);
column.SetName(prefix + column.Name);
df.OnColumnsChanged();
}
return df;
Expand All@@ -316,7 +316,7 @@ public DataFrame AddSuffix(string suffix, bool inPlace = false)
for (int i = 0; i < df.Columns.Count; i++)
{
DataFrameColumn column = df.Columns[i];
df._columnCollection.SetColumnName(column, column.Name + suffix);
column.SetName(column.Name + suffix);
df.OnColumnsChanged();
}
return df;
Expand Down
42 changes: 34 additions & 8 deletions src/Microsoft.Data.Analysis/DataFrameColumn.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -84,6 +84,26 @@ protected set
}
}

// List of ColumnCollections that owns the column
// Current API allows column to be added into multiple dataframes, that's why the list is needed
private readonly List<DataFrameColumnCollection> _ownerColumnCollections = new();

internal void AddOwner(DataFrameColumnCollection columCollection)
{
if (!_ownerColumnCollections.Contains(columCollection))
{
_ownerColumnCollections.Add(columCollection);
}
}

internal void RemoveOwner(DataFrameColumnCollection columCollection)
{
if (_ownerColumnCollections.Contains(columCollection))
{
_ownerColumnCollections.Remove(columCollection);
}
}

/// <summary>
/// The number of <see langword="null" /> values in this column.
/// </summary>
Expand All@@ -95,24 +115,30 @@ public abstract long NullCount
private string _name;

/// <summary>
/// The name of this column.
/// The column name.
/// </summary>
public string Name => _name;

/// <summary>
/// Updates the name of this column.
/// Updates the column name.
/// </summary>
/// <param name="newName">The new name.</param>
/// <param name="dataFrame">If passed in, update the column name in <see cref="DataFrame.Columns"/></param>
public void SetName(string newName, DataFrame dataFrame = null)
public void SetName(string newName)
{
if (!(dataFrame is null))
{
dataFrame.Columns.SetColumnName(this, newName);
}
foreach (var owner in _ownerColumnCollections)
owner.UpdateColumnNameMetadata(this, newName);

_name = newName;
}

/// <summary>
/// Updates the name of this column.
/// </summary>
/// <param name="newName">The new name.</param>
/// <param name="dataFrame">Ignored (for backward compatibility)</param>
[Obsolete]
public void SetName(string newName, DataFrame dataFrame) => SetName(newName);

/// <summary>
/// The type of data this column holds.
/// </summary>
Expand Down
23 changes: 21 additions & 2 deletions src/Microsoft.Data.Analysis/DataFrameColumnCollection.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -38,11 +38,23 @@ internal IReadOnlyList<string> GetColumnNames()
return ret;
}

public void RenameColumn(string currentName, string newName)
{
var column = this[currentName];
column.SetName(newName);
}

[Obsolete]
public void SetColumnName(DataFrameColumn column, string newName)
{
column.SetName(newName);
}

//Updates column's metadata (is used as a callback from Column class)
internal void UpdateColumnNameMetadata(DataFrameColumn column, string newName)
{
string currentName = column.Name;
int currentIndex = _columnNameToIndexDictionary[currentName];
column.SetName(newName);
_columnNameToIndexDictionary.Remove(currentName);
_columnNameToIndexDictionary.Add(newName, currentIndex);
ColumnsChanged?.Invoke();
Expand DownExpand Up@@ -75,6 +87,8 @@ protected override void InsertItem(int columnIndex, DataFrameColumn column)
throw new ArgumentException(string.Format(Strings.DuplicateColumnName, column.Name), nameof(column));
}

column.AddOwner(this);

RowCount = column.Length;

_columnNameToIndexDictionary[column.Name] = columnIndex;
Expand All@@ -98,9 +112,13 @@ protected override void SetItem(int columnIndex, DataFrameColumn column)
{
throw new ArgumentException(string.Format(Strings.DuplicateColumnName, column.Name), nameof(column));
}

_columnNameToIndexDictionary.Remove(this[columnIndex].Name);
_columnNameToIndexDictionary[column.Name] = columnIndex;

this[columnIndex].RemoveOwner(this);
base.SetItem(columnIndex, column);

ColumnsChanged?.Invoke();
}

Expand All@@ -111,6 +129,8 @@ protected override void RemoveItem(int columnIndex)
{
_columnNameToIndexDictionary[this[i].Name]--;
}

this[columnIndex].RemoveOwner(this);
base.RemoveItem(columnIndex);

//Reset RowCount if the last column was removed and dataframe is empty
Expand DownExpand Up@@ -474,6 +494,5 @@ public UInt16DataFrameColumn GetUInt16Column(string name)

throw new ArgumentException(string.Format(Strings.BadColumnCast, column.DataType, typeof(UInt16)));
}

}
}
38 changes: 38 additions & 0 deletions test/Microsoft.Data.Analysis.Tests/DataFrameTests.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -388,6 +388,44 @@ public void ClearColumnsTests()
Assert.Equal(0, dataFrame.Columns.LongCount());
}

[Fact]
public void RenameColumnWithSetNameTests()
{
StringDataFrameColumn city = new StringDataFrameColumn("City", new string[] { "London", "Berlin" });
PrimitiveDataFrameColumn<int> temp = new PrimitiveDataFrameColumn<int>("Temperature", new int[] { 12, 13 });

DataFrame dataframe = new DataFrame(city, temp);

// Change the name of the column:
dataframe["City"].SetName("Town");
var renamedColumn = dataframe["Town"];

Assert.Throws<ArgumentException>(() => dataframe["City"]);

Assert.NotNull(renamedColumn);
Assert.Equal("Town", renamedColumn.Name);
Assert.True(ReferenceEquals(city, renamedColumn));
}

[Fact]
public void RenameColumnWithRenameColumnTests()
{
StringDataFrameColumn city = new StringDataFrameColumn("City", new string[] { "London", "Berlin" });
PrimitiveDataFrameColumn<int> temp = new PrimitiveDataFrameColumn<int>("Temperature", new int[] { 12, 13 });

DataFrame dataframe = new DataFrame(city, temp);

// Change the name of the column:
dataframe.Columns.RenameColumn("City", "Town");
var renamedColumn = dataframe["Town"];

Assert.Throws<ArgumentException>(() => dataframe["City"]);

Assert.NotNull(renamedColumn);
Assert.Equal("Town", renamedColumn.Name);
Assert.True(ReferenceEquals(city, renamedColumn));
}

[Fact]
public void TestBinaryOperations()
{
Expand Down
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms"); } } catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
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2 changes: 1 addition & 1 deletion src/Microsoft.Data.Analysis/DataFrame.Join.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -30,7 +30,7 @@ private void SetSuffixForDuplicatedColumnNames(DataFrame dataFrame, DataFrameCol
{
// Pre-existing column. Change name
DataFrameColumn existingColumn = dataFrame.Columns[index];
dataFrame._columnCollection.SetColumnName(existingColumn, existingColumn.Name + leftSuffix);
existingColumn.SetName(existingColumn.Name + leftSuffix);
column.SetName(column.Name + rightSuffix);
index = dataFrame._columnCollection.IndexOf(column.Name);
}
Expand Down
4 changes: 2 additions & 2 deletions src/Microsoft.Data.Analysis/DataFrame.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -301,7 +301,7 @@ public DataFrame AddPrefix(string prefix, bool inPlace = false)
for (int i = 0; i < df.Columns.Count; i++)
{
DataFrameColumn column = df.Columns[i];
df._columnCollection.SetColumnName(column, prefix + column.Name);
column.SetName(prefix + column.Name);
df.OnColumnsChanged();
}
return df;
Expand All@@ -316,7 +316,7 @@ public DataFrame AddSuffix(string suffix, bool inPlace = false)
for (int i = 0; i < df.Columns.Count; i++)
{
DataFrameColumn column = df.Columns[i];
df._columnCollection.SetColumnName(column, column.Name + suffix);
column.SetName(column.Name + suffix);
df.OnColumnsChanged();
}
return df;
Expand Down
42 changes: 34 additions & 8 deletions src/Microsoft.Data.Analysis/DataFrameColumn.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -84,6 +84,26 @@ protected set
}
}

// List of ColumnCollections that owns the column
// Current API allows column to be added into multiple dataframes, that's why the list is needed
private readonly List<DataFrameColumnCollection> _ownerColumnCollections = new();

internal void AddOwner(DataFrameColumnCollection columCollection)
{
if (!_ownerColumnCollections.Contains(columCollection))
{
_ownerColumnCollections.Add(columCollection);
}
}

internal void RemoveOwner(DataFrameColumnCollection columCollection)
{
if (_ownerColumnCollections.Contains(columCollection))
{
_ownerColumnCollections.Remove(columCollection);
}
}

/// <summary>
/// The number of <see langword="null" /> values in this column.
/// </summary>
Expand All@@ -95,24 +115,30 @@ public abstract long NullCount
private string _name;

/// <summary>
/// The name of this column.
/// The column name.
/// </summary>
public string Name => _name;

/// <summary>
/// Updates the name of this column.
/// Updates the column name.
/// </summary>
/// <param name="newName">The new name.</param>
/// <param name="dataFrame">If passed in, update the column name in <see cref="DataFrame.Columns"/></param>
public void SetName(string newName, DataFrame dataFrame = null)
public void SetName(string newName)
{
if (!(dataFrame is null))
{
dataFrame.Columns.SetColumnName(this, newName);
}
foreach (var owner in _ownerColumnCollections)
owner.UpdateColumnNameMetadata(this, newName);

_name = newName;
}

/// <summary>
/// Updates the name of this column.
/// </summary>
/// <param name="newName">The new name.</param>
/// <param name="dataFrame">Ignored (for backward compatibility)</param>
[Obsolete]
public void SetName(string newName, DataFrame dataFrame) => SetName(newName);

/// <summary>
/// The type of data this column holds.
/// </summary>
Expand Down
23 changes: 21 additions & 2 deletions src/Microsoft.Data.Analysis/DataFrameColumnCollection.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -38,11 +38,23 @@ internal IReadOnlyList<string> GetColumnNames()
return ret;
}

public void RenameColumn(string currentName, string newName)
{
var column = this[currentName];
column.SetName(newName);
}

[Obsolete]
public void SetColumnName(DataFrameColumn column, string newName)
{
column.SetName(newName);
}

//Updates column's metadata (is used as a callback from Column class)
internal void UpdateColumnNameMetadata(DataFrameColumn column, string newName)
{
string currentName = column.Name;
int currentIndex = _columnNameToIndexDictionary[currentName];
column.SetName(newName);
_columnNameToIndexDictionary.Remove(currentName);
_columnNameToIndexDictionary.Add(newName, currentIndex);
ColumnsChanged?.Invoke();
Expand DownExpand Up@@ -75,6 +87,8 @@ protected override void InsertItem(int columnIndex, DataFrameColumn column)
throw new ArgumentException(string.Format(Strings.DuplicateColumnName, column.Name), nameof(column));
}

column.AddOwner(this);

RowCount = column.Length;

_columnNameToIndexDictionary[column.Name] = columnIndex;
Expand All@@ -98,9 +112,13 @@ protected override void SetItem(int columnIndex, DataFrameColumn column)
{
throw new ArgumentException(string.Format(Strings.DuplicateColumnName, column.Name), nameof(column));
}

_columnNameToIndexDictionary.Remove(this[columnIndex].Name);
_columnNameToIndexDictionary[column.Name] = columnIndex;

this[columnIndex].RemoveOwner(this);
base.SetItem(columnIndex, column);

ColumnsChanged?.Invoke();
}

Expand All@@ -111,6 +129,8 @@ protected override void RemoveItem(int columnIndex)
{
_columnNameToIndexDictionary[this[i].Name]--;
}

this[columnIndex].RemoveOwner(this);
base.RemoveItem(columnIndex);

//Reset RowCount if the last column was removed and dataframe is empty
Expand DownExpand Up@@ -474,6 +494,5 @@ public UInt16DataFrameColumn GetUInt16Column(string name)

throw new ArgumentException(string.Format(Strings.BadColumnCast, column.DataType, typeof(UInt16)));
}

}
}
38 changes: 38 additions & 0 deletions test/Microsoft.Data.Analysis.Tests/DataFrameTests.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -388,6 +388,44 @@ public void ClearColumnsTests()
Assert.Equal(0, dataFrame.Columns.LongCount());
}

[Fact]
public void RenameColumnWithSetNameTests()
{
StringDataFrameColumn city = new StringDataFrameColumn("City", new string[] { "London", "Berlin" });
PrimitiveDataFrameColumn<int> temp = new PrimitiveDataFrameColumn<int>("Temperature", new int[] { 12, 13 });

DataFrame dataframe = new DataFrame(city, temp);

// Change the name of the column:
dataframe["City"].SetName("Town");
var renamedColumn = dataframe["Town"];

Assert.Throws<ArgumentException>(() => dataframe["City"]);

Assert.NotNull(renamedColumn);
Assert.Equal("Town", renamedColumn.Name);
Assert.True(ReferenceEquals(city, renamedColumn));
}

[Fact]
public void RenameColumnWithRenameColumnTests()
{
StringDataFrameColumn city = new StringDataFrameColumn("City", new string[] { "London", "Berlin" });
PrimitiveDataFrameColumn<int> temp = new PrimitiveDataFrameColumn<int>("Temperature", new int[] { 12, 13 });

DataFrame dataframe = new DataFrame(city, temp);

// Change the name of the column:
dataframe.Columns.RenameColumn("City", "Town");
var renamedColumn = dataframe["Town"];

Assert.Throws<ArgumentException>(() => dataframe["City"]);

Assert.NotNull(renamedColumn);
Assert.Equal("Town", renamedColumn.Name);
Assert.True(ReferenceEquals(city, renamedColumn));
}

[Fact]
public void TestBinaryOperations()
{
Expand Down
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links"); } } catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); } })(); (function(){ try { var __m = "youtube.com"; var __re = new RegExp('^' + "youtube\\.com" + '
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2 changes: 1 addition & 1 deletion src/Microsoft.Data.Analysis/DataFrame.Join.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -30,7 +30,7 @@ private void SetSuffixForDuplicatedColumnNames(DataFrame dataFrame, DataFrameCol
{
// Pre-existing column. Change name
DataFrameColumn existingColumn = dataFrame.Columns[index];
dataFrame._columnCollection.SetColumnName(existingColumn, existingColumn.Name + leftSuffix);
existingColumn.SetName(existingColumn.Name + leftSuffix);
column.SetName(column.Name + rightSuffix);
index = dataFrame._columnCollection.IndexOf(column.Name);
}
Expand Down
4 changes: 2 additions & 2 deletions src/Microsoft.Data.Analysis/DataFrame.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -301,7 +301,7 @@ public DataFrame AddPrefix(string prefix, bool inPlace = false)
for (int i = 0; i < df.Columns.Count; i++)
{
DataFrameColumn column = df.Columns[i];
df._columnCollection.SetColumnName(column, prefix + column.Name);
column.SetName(prefix + column.Name);
df.OnColumnsChanged();
}
return df;
Expand All@@ -316,7 +316,7 @@ public DataFrame AddSuffix(string suffix, bool inPlace = false)
for (int i = 0; i < df.Columns.Count; i++)
{
DataFrameColumn column = df.Columns[i];
df._columnCollection.SetColumnName(column, column.Name + suffix);
column.SetName(column.Name + suffix);
df.OnColumnsChanged();
}
return df;
Expand Down
42 changes: 34 additions & 8 deletions src/Microsoft.Data.Analysis/DataFrameColumn.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -84,6 +84,26 @@ protected set
}
}

// List of ColumnCollections that owns the column
// Current API allows column to be added into multiple dataframes, that's why the list is needed
private readonly List<DataFrameColumnCollection> _ownerColumnCollections = new();

internal void AddOwner(DataFrameColumnCollection columCollection)
{
if (!_ownerColumnCollections.Contains(columCollection))
{
_ownerColumnCollections.Add(columCollection);
}
}

internal void RemoveOwner(DataFrameColumnCollection columCollection)
{
if (_ownerColumnCollections.Contains(columCollection))
{
_ownerColumnCollections.Remove(columCollection);
}
}

/// <summary>
/// The number of <see langword="null" /> values in this column.
/// </summary>
Expand All@@ -95,24 +115,30 @@ public abstract long NullCount
private string _name;

/// <summary>
/// The name of this column.
/// The column name.
/// </summary>
public string Name => _name;

/// <summary>
/// Updates the name of this column.
/// Updates the column name.
/// </summary>
/// <param name="newName">The new name.</param>
/// <param name="dataFrame">If passed in, update the column name in <see cref="DataFrame.Columns"/></param>
public void SetName(string newName, DataFrame dataFrame = null)
public void SetName(string newName)
{
if (!(dataFrame is null))
{
dataFrame.Columns.SetColumnName(this, newName);
}
foreach (var owner in _ownerColumnCollections)
owner.UpdateColumnNameMetadata(this, newName);

_name = newName;
}

/// <summary>
/// Updates the name of this column.
/// </summary>
/// <param name="newName">The new name.</param>
/// <param name="dataFrame">Ignored (for backward compatibility)</param>
[Obsolete]
public void SetName(string newName, DataFrame dataFrame) => SetName(newName);

/// <summary>
/// The type of data this column holds.
/// </summary>
Expand Down
23 changes: 21 additions & 2 deletions src/Microsoft.Data.Analysis/DataFrameColumnCollection.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -38,11 +38,23 @@ internal IReadOnlyList<string> GetColumnNames()
return ret;
}

public void RenameColumn(string currentName, string newName)
{
var column = this[currentName];
column.SetName(newName);
}

[Obsolete]
public void SetColumnName(DataFrameColumn column, string newName)
{
column.SetName(newName);
}

//Updates column's metadata (is used as a callback from Column class)
internal void UpdateColumnNameMetadata(DataFrameColumn column, string newName)
{
string currentName = column.Name;
int currentIndex = _columnNameToIndexDictionary[currentName];
column.SetName(newName);
_columnNameToIndexDictionary.Remove(currentName);
_columnNameToIndexDictionary.Add(newName, currentIndex);
ColumnsChanged?.Invoke();
Expand DownExpand Up@@ -75,6 +87,8 @@ protected override void InsertItem(int columnIndex, DataFrameColumn column)
throw new ArgumentException(string.Format(Strings.DuplicateColumnName, column.Name), nameof(column));
}

column.AddOwner(this);

RowCount = column.Length;

_columnNameToIndexDictionary[column.Name] = columnIndex;
Expand All@@ -98,9 +112,13 @@ protected override void SetItem(int columnIndex, DataFrameColumn column)
{
throw new ArgumentException(string.Format(Strings.DuplicateColumnName, column.Name), nameof(column));
}

_columnNameToIndexDictionary.Remove(this[columnIndex].Name);
_columnNameToIndexDictionary[column.Name] = columnIndex;

this[columnIndex].RemoveOwner(this);
base.SetItem(columnIndex, column);

ColumnsChanged?.Invoke();
}

Expand All@@ -111,6 +129,8 @@ protected override void RemoveItem(int columnIndex)
{
_columnNameToIndexDictionary[this[i].Name]--;
}

this[columnIndex].RemoveOwner(this);
base.RemoveItem(columnIndex);

//Reset RowCount if the last column was removed and dataframe is empty
Expand DownExpand Up@@ -474,6 +494,5 @@ public UInt16DataFrameColumn GetUInt16Column(string name)

throw new ArgumentException(string.Format(Strings.BadColumnCast, column.DataType, typeof(UInt16)));
}

}
}
38 changes: 38 additions & 0 deletions test/Microsoft.Data.Analysis.Tests/DataFrameTests.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -388,6 +388,44 @@ public void ClearColumnsTests()
Assert.Equal(0, dataFrame.Columns.LongCount());
}

[Fact]
public void RenameColumnWithSetNameTests()
{
StringDataFrameColumn city = new StringDataFrameColumn("City", new string[] { "London", "Berlin" });
PrimitiveDataFrameColumn<int> temp = new PrimitiveDataFrameColumn<int>("Temperature", new int[] { 12, 13 });

DataFrame dataframe = new DataFrame(city, temp);

// Change the name of the column:
dataframe["City"].SetName("Town");
var renamedColumn = dataframe["Town"];

Assert.Throws<ArgumentException>(() => dataframe["City"]);

Assert.NotNull(renamedColumn);
Assert.Equal("Town", renamedColumn.Name);
Assert.True(ReferenceEquals(city, renamedColumn));
}

[Fact]
public void RenameColumnWithRenameColumnTests()
{
StringDataFrameColumn city = new StringDataFrameColumn("City", new string[] { "London", "Berlin" });
PrimitiveDataFrameColumn<int> temp = new PrimitiveDataFrameColumn<int>("Temperature", new int[] { 12, 13 });

DataFrame dataframe = new DataFrame(city, temp);

// Change the name of the column:
dataframe.Columns.RenameColumn("City", "Town");
var renamedColumn = dataframe["Town"];

Assert.Throws<ArgumentException>(() => dataframe["City"]);

Assert.NotNull(renamedColumn);
Assert.Equal("Town", renamedColumn.Name);
Assert.True(ReferenceEquals(city, renamedColumn));
}

[Fact]
public void TestBinaryOperations()
{
Expand Down
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default"); } } catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
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2 changes: 1 addition & 1 deletion src/Microsoft.Data.Analysis/DataFrame.Join.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -30,7 +30,7 @@ private void SetSuffixForDuplicatedColumnNames(DataFrame dataFrame, DataFrameCol
{
// Pre-existing column. Change name
DataFrameColumn existingColumn = dataFrame.Columns[index];
dataFrame._columnCollection.SetColumnName(existingColumn, existingColumn.Name + leftSuffix);
existingColumn.SetName(existingColumn.Name + leftSuffix);
column.SetName(column.Name + rightSuffix);
index = dataFrame._columnCollection.IndexOf(column.Name);
}
Expand Down
4 changes: 2 additions & 2 deletions src/Microsoft.Data.Analysis/DataFrame.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -301,7 +301,7 @@ public DataFrame AddPrefix(string prefix, bool inPlace = false)
for (int i = 0; i < df.Columns.Count; i++)
{
DataFrameColumn column = df.Columns[i];
df._columnCollection.SetColumnName(column, prefix + column.Name);
column.SetName(prefix + column.Name);
df.OnColumnsChanged();
}
return df;
Expand All@@ -316,7 +316,7 @@ public DataFrame AddSuffix(string suffix, bool inPlace = false)
for (int i = 0; i < df.Columns.Count; i++)
{
DataFrameColumn column = df.Columns[i];
df._columnCollection.SetColumnName(column, column.Name + suffix);
column.SetName(column.Name + suffix);
df.OnColumnsChanged();
}
return df;
Expand Down
42 changes: 34 additions & 8 deletions src/Microsoft.Data.Analysis/DataFrameColumn.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -84,6 +84,26 @@ protected set
}
}

// List of ColumnCollections that owns the column
// Current API allows column to be added into multiple dataframes, that's why the list is needed
private readonly List<DataFrameColumnCollection> _ownerColumnCollections = new();

internal void AddOwner(DataFrameColumnCollection columCollection)
{
if (!_ownerColumnCollections.Contains(columCollection))
{
_ownerColumnCollections.Add(columCollection);
}
}

internal void RemoveOwner(DataFrameColumnCollection columCollection)
{
if (_ownerColumnCollections.Contains(columCollection))
{
_ownerColumnCollections.Remove(columCollection);
}
}

/// <summary>
/// The number of <see langword="null" /> values in this column.
/// </summary>
Expand All@@ -95,24 +115,30 @@ public abstract long NullCount
private string _name;

/// <summary>
/// The name of this column.
/// The column name.
/// </summary>
public string Name => _name;

/// <summary>
/// Updates the name of this column.
/// Updates the column name.
/// </summary>
/// <param name="newName">The new name.</param>
/// <param name="dataFrame">If passed in, update the column name in <see cref="DataFrame.Columns"/></param>
public void SetName(string newName, DataFrame dataFrame = null)
public void SetName(string newName)
{
if (!(dataFrame is null))
{
dataFrame.Columns.SetColumnName(this, newName);
}
foreach (var owner in _ownerColumnCollections)
owner.UpdateColumnNameMetadata(this, newName);

_name = newName;
}

/// <summary>
/// Updates the name of this column.
/// </summary>
/// <param name="newName">The new name.</param>
/// <param name="dataFrame">Ignored (for backward compatibility)</param>
[Obsolete]
public void SetName(string newName, DataFrame dataFrame) => SetName(newName);

/// <summary>
/// The type of data this column holds.
/// </summary>
Expand Down
23 changes: 21 additions & 2 deletions src/Microsoft.Data.Analysis/DataFrameColumnCollection.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -38,11 +38,23 @@ internal IReadOnlyList<string> GetColumnNames()
return ret;
}

public void RenameColumn(string currentName, string newName)
{
var column = this[currentName];
column.SetName(newName);
}

[Obsolete]
public void SetColumnName(DataFrameColumn column, string newName)
{
column.SetName(newName);
}

//Updates column's metadata (is used as a callback from Column class)
internal void UpdateColumnNameMetadata(DataFrameColumn column, string newName)
{
string currentName = column.Name;
int currentIndex = _columnNameToIndexDictionary[currentName];
column.SetName(newName);
_columnNameToIndexDictionary.Remove(currentName);
_columnNameToIndexDictionary.Add(newName, currentIndex);
ColumnsChanged?.Invoke();
Expand DownExpand Up@@ -75,6 +87,8 @@ protected override void InsertItem(int columnIndex, DataFrameColumn column)
throw new ArgumentException(string.Format(Strings.DuplicateColumnName, column.Name), nameof(column));
}

column.AddOwner(this);

RowCount = column.Length;

_columnNameToIndexDictionary[column.Name] = columnIndex;
Expand All@@ -98,9 +112,13 @@ protected override void SetItem(int columnIndex, DataFrameColumn column)
{
throw new ArgumentException(string.Format(Strings.DuplicateColumnName, column.Name), nameof(column));
}

_columnNameToIndexDictionary.Remove(this[columnIndex].Name);
_columnNameToIndexDictionary[column.Name] = columnIndex;

this[columnIndex].RemoveOwner(this);
base.SetItem(columnIndex, column);

ColumnsChanged?.Invoke();
}

Expand All@@ -111,6 +129,8 @@ protected override void RemoveItem(int columnIndex)
{
_columnNameToIndexDictionary[this[i].Name]--;
}

this[columnIndex].RemoveOwner(this);
base.RemoveItem(columnIndex);

//Reset RowCount if the last column was removed and dataframe is empty
Expand DownExpand Up@@ -474,6 +494,5 @@ public UInt16DataFrameColumn GetUInt16Column(string name)

throw new ArgumentException(string.Format(Strings.BadColumnCast, column.DataType, typeof(UInt16)));
}

}
}
38 changes: 38 additions & 0 deletions test/Microsoft.Data.Analysis.Tests/DataFrameTests.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -388,6 +388,44 @@ public void ClearColumnsTests()
Assert.Equal(0, dataFrame.Columns.LongCount());
}

[Fact]
public void RenameColumnWithSetNameTests()
{
StringDataFrameColumn city = new StringDataFrameColumn("City", new string[] { "London", "Berlin" });
PrimitiveDataFrameColumn<int> temp = new PrimitiveDataFrameColumn<int>("Temperature", new int[] { 12, 13 });

DataFrame dataframe = new DataFrame(city, temp);

// Change the name of the column:
dataframe["City"].SetName("Town");
var renamedColumn = dataframe["Town"];

Assert.Throws<ArgumentException>(() => dataframe["City"]);

Assert.NotNull(renamedColumn);
Assert.Equal("Town", renamedColumn.Name);
Assert.True(ReferenceEquals(city, renamedColumn));
}

[Fact]
public void RenameColumnWithRenameColumnTests()
{
StringDataFrameColumn city = new StringDataFrameColumn("City", new string[] { "London", "Berlin" });
PrimitiveDataFrameColumn<int> temp = new PrimitiveDataFrameColumn<int>("Temperature", new int[] { 12, 13 });

DataFrame dataframe = new DataFrame(city, temp);

// Change the name of the column:
dataframe.Columns.RenameColumn("City", "Town");
var renamedColumn = dataframe["Town"];

Assert.Throws<ArgumentException>(() => dataframe["City"]);

Assert.NotNull(renamedColumn);
Assert.Equal("Town", renamedColumn.Name);
Assert.True(ReferenceEquals(city, renamedColumn));
}

[Fact]
public void TestBinaryOperations()
{
Expand Down
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers"); } } catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
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2 changes: 1 addition & 1 deletion src/Microsoft.Data.Analysis/DataFrame.Join.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -30,7 +30,7 @@ private void SetSuffixForDuplicatedColumnNames(DataFrame dataFrame, DataFrameCol
{
// Pre-existing column. Change name
DataFrameColumn existingColumn = dataFrame.Columns[index];
dataFrame._columnCollection.SetColumnName(existingColumn, existingColumn.Name + leftSuffix);
existingColumn.SetName(existingColumn.Name + leftSuffix);
column.SetName(column.Name + rightSuffix);
index = dataFrame._columnCollection.IndexOf(column.Name);
}
Expand Down
4 changes: 2 additions & 2 deletions src/Microsoft.Data.Analysis/DataFrame.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -301,7 +301,7 @@ public DataFrame AddPrefix(string prefix, bool inPlace = false)
for (int i = 0; i < df.Columns.Count; i++)
{
DataFrameColumn column = df.Columns[i];
df._columnCollection.SetColumnName(column, prefix + column.Name);
column.SetName(prefix + column.Name);
df.OnColumnsChanged();
}
return df;
Expand All@@ -316,7 +316,7 @@ public DataFrame AddSuffix(string suffix, bool inPlace = false)
for (int i = 0; i < df.Columns.Count; i++)
{
DataFrameColumn column = df.Columns[i];
df._columnCollection.SetColumnName(column, column.Name + suffix);
column.SetName(column.Name + suffix);
df.OnColumnsChanged();
}
return df;
Expand Down
42 changes: 34 additions & 8 deletions src/Microsoft.Data.Analysis/DataFrameColumn.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -84,6 +84,26 @@ protected set
}
}

// List of ColumnCollections that owns the column
// Current API allows column to be added into multiple dataframes, that's why the list is needed
private readonly List<DataFrameColumnCollection> _ownerColumnCollections = new();

internal void AddOwner(DataFrameColumnCollection columCollection)
{
if (!_ownerColumnCollections.Contains(columCollection))
{
_ownerColumnCollections.Add(columCollection);
}
}

internal void RemoveOwner(DataFrameColumnCollection columCollection)
{
if (_ownerColumnCollections.Contains(columCollection))
{
_ownerColumnCollections.Remove(columCollection);
}
}

/// <summary>
/// The number of <see langword="null" /> values in this column.
/// </summary>
Expand All@@ -95,24 +115,30 @@ public abstract long NullCount
private string _name;

/// <summary>
/// The name of this column.
/// The column name.
/// </summary>
public string Name => _name;

/// <summary>
/// Updates the name of this column.
/// Updates the column name.
/// </summary>
/// <param name="newName">The new name.</param>
/// <param name="dataFrame">If passed in, update the column name in <see cref="DataFrame.Columns"/></param>
public void SetName(string newName, DataFrame dataFrame = null)
public void SetName(string newName)
{
if (!(dataFrame is null))
{
dataFrame.Columns.SetColumnName(this, newName);
}
foreach (var owner in _ownerColumnCollections)
owner.UpdateColumnNameMetadata(this, newName);

_name = newName;
}

/// <summary>
/// Updates the name of this column.
/// </summary>
/// <param name="newName">The new name.</param>
/// <param name="dataFrame">Ignored (for backward compatibility)</param>
[Obsolete]
public void SetName(string newName, DataFrame dataFrame) => SetName(newName);

/// <summary>
/// The type of data this column holds.
/// </summary>
Expand Down
23 changes: 21 additions & 2 deletions src/Microsoft.Data.Analysis/DataFrameColumnCollection.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -38,11 +38,23 @@ internal IReadOnlyList<string> GetColumnNames()
return ret;
}

public void RenameColumn(string currentName, string newName)
{
var column = this[currentName];
column.SetName(newName);
}

[Obsolete]
public void SetColumnName(DataFrameColumn column, string newName)
{
column.SetName(newName);
}

//Updates column's metadata (is used as a callback from Column class)
internal void UpdateColumnNameMetadata(DataFrameColumn column, string newName)
{
string currentName = column.Name;
int currentIndex = _columnNameToIndexDictionary[currentName];
column.SetName(newName);
_columnNameToIndexDictionary.Remove(currentName);
_columnNameToIndexDictionary.Add(newName, currentIndex);
ColumnsChanged?.Invoke();
Expand DownExpand Up@@ -75,6 +87,8 @@ protected override void InsertItem(int columnIndex, DataFrameColumn column)
throw new ArgumentException(string.Format(Strings.DuplicateColumnName, column.Name), nameof(column));
}

column.AddOwner(this);

RowCount = column.Length;

_columnNameToIndexDictionary[column.Name] = columnIndex;
Expand All@@ -98,9 +112,13 @@ protected override void SetItem(int columnIndex, DataFrameColumn column)
{
throw new ArgumentException(string.Format(Strings.DuplicateColumnName, column.Name), nameof(column));
}

_columnNameToIndexDictionary.Remove(this[columnIndex].Name);
_columnNameToIndexDictionary[column.Name] = columnIndex;

this[columnIndex].RemoveOwner(this);
base.SetItem(columnIndex, column);

ColumnsChanged?.Invoke();
}

Expand All@@ -111,6 +129,8 @@ protected override void RemoveItem(int columnIndex)
{
_columnNameToIndexDictionary[this[i].Name]--;
}

this[columnIndex].RemoveOwner(this);
base.RemoveItem(columnIndex);

//Reset RowCount if the last column was removed and dataframe is empty
Expand DownExpand Up@@ -474,6 +494,5 @@ public UInt16DataFrameColumn GetUInt16Column(string name)

throw new ArgumentException(string.Format(Strings.BadColumnCast, column.DataType, typeof(UInt16)));
}

}
}
38 changes: 38 additions & 0 deletions test/Microsoft.Data.Analysis.Tests/DataFrameTests.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -388,6 +388,44 @@ public void ClearColumnsTests()
Assert.Equal(0, dataFrame.Columns.LongCount());
}

[Fact]
public void RenameColumnWithSetNameTests()
{
StringDataFrameColumn city = new StringDataFrameColumn("City", new string[] { "London", "Berlin" });
PrimitiveDataFrameColumn<int> temp = new PrimitiveDataFrameColumn<int>("Temperature", new int[] { 12, 13 });

DataFrame dataframe = new DataFrame(city, temp);

// Change the name of the column:
dataframe["City"].SetName("Town");
var renamedColumn = dataframe["Town"];

Assert.Throws<ArgumentException>(() => dataframe["City"]);

Assert.NotNull(renamedColumn);
Assert.Equal("Town", renamedColumn.Name);
Assert.True(ReferenceEquals(city, renamedColumn));
}

[Fact]
public void RenameColumnWithRenameColumnTests()
{
StringDataFrameColumn city = new StringDataFrameColumn("City", new string[] { "London", "Berlin" });
PrimitiveDataFrameColumn<int> temp = new PrimitiveDataFrameColumn<int>("Temperature", new int[] { 12, 13 });

DataFrame dataframe = new DataFrame(city, temp);

// Change the name of the column:
dataframe.Columns.RenameColumn("City", "Town");
var renamedColumn = dataframe["Town"];

Assert.Throws<ArgumentException>(() => dataframe["City"]);

Assert.NotNull(renamedColumn);
Assert.Equal("Town", renamedColumn.Name);
Assert.True(ReferenceEquals(city, renamedColumn));
}

[Fact]
public void TestBinaryOperations()
{
Expand Down
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode"); } } catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); } })(); })();
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2 changes: 1 addition & 1 deletion src/Microsoft.Data.Analysis/DataFrame.Join.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -30,7 +30,7 @@ private void SetSuffixForDuplicatedColumnNames(DataFrame dataFrame, DataFrameCol
{
// Pre-existing column. Change name
DataFrameColumn existingColumn = dataFrame.Columns[index];
dataFrame._columnCollection.SetColumnName(existingColumn, existingColumn.Name + leftSuffix);
existingColumn.SetName(existingColumn.Name + leftSuffix);
column.SetName(column.Name + rightSuffix);
index = dataFrame._columnCollection.IndexOf(column.Name);
}
Expand Down
4 changes: 2 additions & 2 deletions src/Microsoft.Data.Analysis/DataFrame.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -301,7 +301,7 @@ public DataFrame AddPrefix(string prefix, bool inPlace = false)
for (int i = 0; i < df.Columns.Count; i++)
{
DataFrameColumn column = df.Columns[i];
df._columnCollection.SetColumnName(column, prefix + column.Name);
column.SetName(prefix + column.Name);
df.OnColumnsChanged();
}
return df;
Expand All@@ -316,7 +316,7 @@ public DataFrame AddSuffix(string suffix, bool inPlace = false)
for (int i = 0; i < df.Columns.Count; i++)
{
DataFrameColumn column = df.Columns[i];
df._columnCollection.SetColumnName(column, column.Name + suffix);
column.SetName(column.Name + suffix);
df.OnColumnsChanged();
}
return df;
Expand Down
42 changes: 34 additions & 8 deletions src/Microsoft.Data.Analysis/DataFrameColumn.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -84,6 +84,26 @@ protected set
}
}

// List of ColumnCollections that owns the column
// Current API allows column to be added into multiple dataframes, that's why the list is needed
private readonly List<DataFrameColumnCollection> _ownerColumnCollections = new();

internal void AddOwner(DataFrameColumnCollection columCollection)
{
if (!_ownerColumnCollections.Contains(columCollection))
{
_ownerColumnCollections.Add(columCollection);
}
}

internal void RemoveOwner(DataFrameColumnCollection columCollection)
{
if (_ownerColumnCollections.Contains(columCollection))
{
_ownerColumnCollections.Remove(columCollection);
}
}

/// <summary>
/// The number of <see langword="null" /> values in this column.
/// </summary>
Expand All@@ -95,24 +115,30 @@ public abstract long NullCount
private string _name;

/// <summary>
/// The name of this column.
/// The column name.
/// </summary>
public string Name => _name;

/// <summary>
/// Updates the name of this column.
/// Updates the column name.
/// </summary>
/// <param name="newName">The new name.</param>
/// <param name="dataFrame">If passed in, update the column name in <see cref="DataFrame.Columns"/></param>
public void SetName(string newName, DataFrame dataFrame = null)
public void SetName(string newName)
{
if (!(dataFrame is null))
{
dataFrame.Columns.SetColumnName(this, newName);
}
foreach (var owner in _ownerColumnCollections)
owner.UpdateColumnNameMetadata(this, newName);

_name = newName;
}

/// <summary>
/// Updates the name of this column.
/// </summary>
/// <param name="newName">The new name.</param>
/// <param name="dataFrame">Ignored (for backward compatibility)</param>
[Obsolete]
public void SetName(string newName, DataFrame dataFrame) => SetName(newName);

/// <summary>
/// The type of data this column holds.
/// </summary>
Expand Down
23 changes: 21 additions & 2 deletions src/Microsoft.Data.Analysis/DataFrameColumnCollection.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -38,11 +38,23 @@ internal IReadOnlyList<string> GetColumnNames()
return ret;
}

public void RenameColumn(string currentName, string newName)
{
var column = this[currentName];
column.SetName(newName);
}

[Obsolete]
public void SetColumnName(DataFrameColumn column, string newName)
{
column.SetName(newName);
}

//Updates column's metadata (is used as a callback from Column class)
internal void UpdateColumnNameMetadata(DataFrameColumn column, string newName)
{
string currentName = column.Name;
int currentIndex = _columnNameToIndexDictionary[currentName];
column.SetName(newName);
_columnNameToIndexDictionary.Remove(currentName);
_columnNameToIndexDictionary.Add(newName, currentIndex);
ColumnsChanged?.Invoke();
Expand DownExpand Up@@ -75,6 +87,8 @@ protected override void InsertItem(int columnIndex, DataFrameColumn column)
throw new ArgumentException(string.Format(Strings.DuplicateColumnName, column.Name), nameof(column));
}

column.AddOwner(this);

RowCount = column.Length;

_columnNameToIndexDictionary[column.Name] = columnIndex;
Expand All@@ -98,9 +112,13 @@ protected override void SetItem(int columnIndex, DataFrameColumn column)
{
throw new ArgumentException(string.Format(Strings.DuplicateColumnName, column.Name), nameof(column));
}

_columnNameToIndexDictionary.Remove(this[columnIndex].Name);
_columnNameToIndexDictionary[column.Name] = columnIndex;

this[columnIndex].RemoveOwner(this);
base.SetItem(columnIndex, column);

ColumnsChanged?.Invoke();
}

Expand All@@ -111,6 +129,8 @@ protected override void RemoveItem(int columnIndex)
{
_columnNameToIndexDictionary[this[i].Name]--;
}

this[columnIndex].RemoveOwner(this);
base.RemoveItem(columnIndex);

//Reset RowCount if the last column was removed and dataframe is empty
Expand DownExpand Up@@ -474,6 +494,5 @@ public UInt16DataFrameColumn GetUInt16Column(string name)

throw new ArgumentException(string.Format(Strings.BadColumnCast, column.DataType, typeof(UInt16)));
}

}
}
38 changes: 38 additions & 0 deletions test/Microsoft.Data.Analysis.Tests/DataFrameTests.cs
Original file line numberDiff line numberDiff line change
Expand Up@@ -388,6 +388,44 @@ public void ClearColumnsTests()
Assert.Equal(0, dataFrame.Columns.LongCount());
}

[Fact]
public void RenameColumnWithSetNameTests()
{
StringDataFrameColumn city = new StringDataFrameColumn("City", new string[] { "London", "Berlin" });
PrimitiveDataFrameColumn<int> temp = new PrimitiveDataFrameColumn<int>("Temperature", new int[] { 12, 13 });

DataFrame dataframe = new DataFrame(city, temp);

// Change the name of the column:
dataframe["City"].SetName("Town");
var renamedColumn = dataframe["Town"];

Assert.Throws<ArgumentException>(() => dataframe["City"]);

Assert.NotNull(renamedColumn);
Assert.Equal("Town", renamedColumn.Name);
Assert.True(ReferenceEquals(city, renamedColumn));
}

[Fact]
public void RenameColumnWithRenameColumnTests()
{
StringDataFrameColumn city = new StringDataFrameColumn("City", new string[] { "London", "Berlin" });
PrimitiveDataFrameColumn<int> temp = new PrimitiveDataFrameColumn<int>("Temperature", new int[] { 12, 13 });

DataFrame dataframe = new DataFrame(city, temp);

// Change the name of the column:
dataframe.Columns.RenameColumn("City", "Town");
var renamedColumn = dataframe["Town"];

Assert.Throws<ArgumentException>(() => dataframe["City"]);

Assert.NotNull(renamedColumn);
Assert.Equal("Town", renamedColumn.Name);
Assert.True(ReferenceEquals(city, renamedColumn));
}

[Fact]
public void TestBinaryOperations()
{
Expand Down