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[R] Support for connection class when reading and writing files #25332

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Closed
[R] Support for connection class when reading and writing files#25332
Assignees
paleolimbot
Labels
Component: RType: enhancement
Milestone
8.0.0

Description

@asfimport
asfimport
opened on Jun 26, 2020

We have an internal filesystem that we interact with through objects that inherit from the connection class. These files aren't necessarily local, making it slightly more complicated to read and write parquet files, for example.

For now, we're generating raw vectors and using that to create the file. For example, to read files


ReadParquet <- function(filename, ...) {}}
file <-file(filename,"rb")
on.exit(close(file))
raw <- readBin(file, "raw", FileInfo(filename)$size)
return(arrow::read_parquet(raw, ...))
}

And to write,


WriteParquet <- function(df, filepath, ...) {
stream <- BufferOutputStream$create()
write_parquet(df, stream, ...)
raw <- stream$finish()$data()
file <- file(filepath, "wb")
on.exit(close(file)
writeBin(raw, file)
return(invisible())
}

At the C++ level, we are interacting with R_new_custom_connection defined here:
https://github.com/wch/r-source/blob/trunk/src/include/R_ext/Connections.h

I've been very impressed with how feature-rich arrow is. It would be nice to see this API supported as well.

Reporter: Michael Quinn
Assignee: Dewey Dunnington / @paleolimbot

Related issues:

PRs and other links:

Note: This issue was originally created as ARROW-9235. Please see the migration documentation for further details.

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[R] Support for `connection` class when reading and writing files · Issue #25332 · apache/arrow · GitHub
    Skip to content
    [R] Support for connection class when reading and writing files #25332
    Closed
    Closed
    [R] Support for connection class when reading and writing files#25332
    Assignees
    paleolimbot
    Labels
    Component: RType: enhancement
    Milestone
    8.0.0
    Description
    @asfimport
    asfimport
    opened on Jun 26, 2020
    We have an internal filesystem that we interact with through objects that inherit from the connection class. These files aren't necessarily local, making it slightly more complicated to read and write parquet files, for example.
    For now, we're generating raw vectors and using that to create the file. For example, to read files
    
ReadParquet <- function(filename, ...) {}}
file <-file(filename,"rb")
on.exit(close(file))
raw <- readBin(file, "raw", FileInfo(filename)$size)
return(arrow::read_parquet(raw, ...))
}

    And to write,
    
WriteParquet <- function(df, filepath, ...) {
stream <- BufferOutputStream$create()
write_parquet(df, stream, ...)
raw <- stream$finish()$data()
file <- file(filepath, "wb")
on.exit(close(file)
writeBin(raw, file)
return(invisible())
}

    At the C++ level, we are interacting with  R_new_custom_connection defined here:
    https://github.com/wch/r-source/blob/trunk/src/include/R_ext/Connections.h
    I've been very impressed with how feature-rich arrow is. It would be nice to see this API supported as well.
    Reporter: Michael Quinn
    Assignee: Dewey Dunnington / @paleolimbot
    Related issues:
    PRs and other links:
    Note: This issue was originally created as ARROW-9235. Please see the migration documentation for further details.
    Metadata
    Metadata
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    Labels
    Component: RType: enhancement
    Type
    No type
    Projects
    No projects
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      None yet
      Development
      No branches or pull requests
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var __re = new RegExp('^' + ".*" + '
[R] Support for `connection` class when reading and writing files · Issue #25332 · apache/arrow · GitHub
      Skip to content
      [R] Support for connection class when reading and writing files #25332
      Closed
      Closed
      [R] Support for connection class when reading and writing files#25332
      Assignees
      paleolimbot
      Labels
      Component: RType: enhancement
      Milestone
      8.0.0
      Description
      @asfimport
      asfimport
      opened on Jun 26, 2020
      We have an internal filesystem that we interact with through objects that inherit from the connection class. These files aren't necessarily local, making it slightly more complicated to read and write parquet files, for example.
      For now, we're generating raw vectors and using that to create the file. For example, to read files
      
ReadParquet <- function(filename, ...) {}}
file <-file(filename,"rb")
on.exit(close(file))
raw <- readBin(file, "raw", FileInfo(filename)$size)
return(arrow::read_parquet(raw, ...))
}

      And to write,
      
WriteParquet <- function(df, filepath, ...) {
stream <- BufferOutputStream$create()
write_parquet(df, stream, ...)
raw <- stream$finish()$data()
file <- file(filepath, "wb")
on.exit(close(file)
writeBin(raw, file)
return(invisible())
}

      At the C++ level, we are interacting with  R_new_custom_connection defined here:
      https://github.com/wch/r-source/blob/trunk/src/include/R_ext/Connections.h
      I've been very impressed with how feature-rich arrow is. It would be nice to see this API supported as well.
      Reporter: Michael Quinn
      Assignee: Dewey Dunnington / @paleolimbot
      Related issues:
      PRs and other links:
      Note: This issue was originally created as ARROW-9235. Please see the migration documentation for further details.
      Metadata
      Metadata
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      Labels
      Component: RType: enhancement
      Type
      No type
      Projects
      No projects
        Milestone
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        None yet
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        No branches or pull requests
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(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
[R] Support for `connection` class when reading and writing files · Issue #25332 · apache/arrow · GitHub
        Skip to content
        [R] Support for connection class when reading and writing files #25332
        Closed
        Closed
        [R] Support for connection class when reading and writing files#25332
        Assignees
        paleolimbot
        Labels
        Component: RType: enhancement
        Milestone
        8.0.0
        Description
        @asfimport
        asfimport
        opened on Jun 26, 2020
        We have an internal filesystem that we interact with through objects that inherit from the connection class. These files aren't necessarily local, making it slightly more complicated to read and write parquet files, for example.
        For now, we're generating raw vectors and using that to create the file. For example, to read files
        
ReadParquet <- function(filename, ...) {}}
file <-file(filename,"rb")
on.exit(close(file))
raw <- readBin(file, "raw", FileInfo(filename)$size)
return(arrow::read_parquet(raw, ...))
}

        And to write,
        
WriteParquet <- function(df, filepath, ...) {
stream <- BufferOutputStream$create()
write_parquet(df, stream, ...)
raw <- stream$finish()$data()
file <- file(filepath, "wb")
on.exit(close(file)
writeBin(raw, file)
return(invisible())
}

        At the C++ level, we are interacting with  R_new_custom_connection defined here:
        https://github.com/wch/r-source/blob/trunk/src/include/R_ext/Connections.h
        I've been very impressed with how feature-rich arrow is. It would be nice to see this API supported as well.
        Reporter: Michael Quinn
        Assignee: Dewey Dunnington / @paleolimbot
        Related issues:
        PRs and other links:
        Note: This issue was originally created as ARROW-9235. Please see the migration documentation for further details.
        Metadata
        Metadata
        Assignees
        Labels
        Component: RType: enhancement
        Type
        No type
        Projects
        No projects
          Milestone
          Relationships
          None yet
          Development
          No branches or pull requests
          Issue actions
          
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try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '
[R] Support for `connection` class when reading and writing files · Issue #25332 · apache/arrow · GitHub
          Skip to content
          [R] Support for connection class when reading and writing files #25332
          Closed
          Closed
          [R] Support for connection class when reading and writing files#25332
          Assignees
          paleolimbot
          Labels
          Component: RType: enhancement
          Milestone
          8.0.0
          Description
          @asfimport
          asfimport
          opened on Jun 26, 2020
          We have an internal filesystem that we interact with through objects that inherit from the connection class. These files aren't necessarily local, making it slightly more complicated to read and write parquet files, for example.
          For now, we're generating raw vectors and using that to create the file. For example, to read files
          
ReadParquet <- function(filename, ...) {}}
file <-file(filename,"rb")
on.exit(close(file))
raw <- readBin(file, "raw", FileInfo(filename)$size)
return(arrow::read_parquet(raw, ...))
}

          And to write,
          
WriteParquet <- function(df, filepath, ...) {
stream <- BufferOutputStream$create()
write_parquet(df, stream, ...)
raw <- stream$finish()$data()
file <- file(filepath, "wb")
on.exit(close(file)
writeBin(raw, file)
return(invisible())
}

          At the C++ level, we are interacting with  R_new_custom_connection defined here:
          https://github.com/wch/r-source/blob/trunk/src/include/R_ext/Connections.h
          I've been very impressed with how feature-rich arrow is. It would be nice to see this API supported as well.
          Reporter: Michael Quinn
          Assignee: Dewey Dunnington / @paleolimbot
          Related issues:
          PRs and other links:
          Note: This issue was originally created as ARROW-9235. Please see the migration documentation for further details.
          Metadata
          Metadata
          Assignees
          Labels
          Component: RType: enhancement
          Type
          No type
          Projects
          No projects
            Milestone
            Relationships
            None yet
            Development
            No branches or pull requests
            Issue actions
            
, 'i');
if (__m === '*' || __re.test(location.href)) {
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(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
[R] Support for `connection` class when reading and writing files · Issue #25332 · apache/arrow · GitHub
            Skip to content
            [R] Support for connection class when reading and writing files #25332
            Closed
            Closed
            [R] Support for connection class when reading and writing files#25332
            Assignees
            paleolimbot
            Labels
            Component: RType: enhancement
            Milestone
            8.0.0
            Description
            @asfimport
            asfimport
            opened on Jun 26, 2020
            We have an internal filesystem that we interact with through objects that inherit from the connection class. These files aren't necessarily local, making it slightly more complicated to read and write parquet files, for example.
            For now, we're generating raw vectors and using that to create the file. For example, to read files
            
ReadParquet <- function(filename, ...) {}}
file <-file(filename,"rb")
on.exit(close(file))
raw <- readBin(file, "raw", FileInfo(filename)$size)
return(arrow::read_parquet(raw, ...))
}

            And to write,
            
WriteParquet <- function(df, filepath, ...) {
stream <- BufferOutputStream$create()
write_parquet(df, stream, ...)
raw <- stream$finish()$data()
file <- file(filepath, "wb")
on.exit(close(file)
writeBin(raw, file)
return(invisible())
}

            At the C++ level, we are interacting with  R_new_custom_connection defined here:
            https://github.com/wch/r-source/blob/trunk/src/include/R_ext/Connections.h
            I've been very impressed with how feature-rich arrow is. It would be nice to see this API supported as well.
            Reporter: Michael Quinn
            Assignee: Dewey Dunnington / @paleolimbot
            Related issues:
            PRs and other links:
            Note: This issue was originally created as ARROW-9235. Please see the migration documentation for further details.
            Metadata
            Metadata
            Assignees
            Labels
            Component: RType: enhancement
            Type
            No type
            Projects
            No projects
              Milestone
              Relationships
              None yet
              Development
              No branches or pull requests
              Issue actions
              
, 'i');
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(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
[R] Support for `connection` class when reading and writing files · Issue #25332 · apache/arrow · GitHub
              Skip to content
              [R] Support for connection class when reading and writing files #25332
              Closed
              Closed
              [R] Support for connection class when reading and writing files#25332
              Assignees
              paleolimbot
              Labels
              Component: RType: enhancement
              Milestone
              8.0.0
              Description
              @asfimport
              asfimport
              opened on Jun 26, 2020
              We have an internal filesystem that we interact with through objects that inherit from the connection class. These files aren't necessarily local, making it slightly more complicated to read and write parquet files, for example.
              For now, we're generating raw vectors and using that to create the file. For example, to read files
              
ReadParquet <- function(filename, ...) {}}
file <-file(filename,"rb")
on.exit(close(file))
raw <- readBin(file, "raw", FileInfo(filename)$size)
return(arrow::read_parquet(raw, ...))
}

              And to write,
              
WriteParquet <- function(df, filepath, ...) {
stream <- BufferOutputStream$create()
write_parquet(df, stream, ...)
raw <- stream$finish()$data()
file <- file(filepath, "wb")
on.exit(close(file)
writeBin(raw, file)
return(invisible())
}

              At the C++ level, we are interacting with  R_new_custom_connection defined here:
              https://github.com/wch/r-source/blob/trunk/src/include/R_ext/Connections.h
              I've been very impressed with how feature-rich arrow is. It would be nice to see this API supported as well.
              Reporter: Michael Quinn
              Assignee: Dewey Dunnington / @paleolimbot
              Related issues:
              PRs and other links:
              Note: This issue was originally created as ARROW-9235. Please see the migration documentation for further details.
              Metadata
              Metadata
              Assignees
              Labels
              Component: RType: enhancement
              Type
              No type
              Projects
              No projects
                Milestone
                Relationships
                None yet
                Development
                No branches or pull requests
                Issue actions
                
, 'i');
if (__m === '*' || __re.test(location.href)) {
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console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');
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} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();
[R] Support for `connection` class when reading and writing files · Issue #25332 · apache/arrow · GitHub
                Skip to content
                [R] Support for connection class when reading and writing files #25332
                Closed
                Closed
                [R] Support for connection class when reading and writing files#25332
                Assignees
                paleolimbot
                Labels
                Component: RType: enhancement
                Milestone
                8.0.0
                Description
                @asfimport
                asfimport
                opened on Jun 26, 2020
                We have an internal filesystem that we interact with through objects that inherit from the connection class. These files aren't necessarily local, making it slightly more complicated to read and write parquet files, for example.
                For now, we're generating raw vectors and using that to create the file. For example, to read files
                
ReadParquet <- function(filename, ...) {}}
file <-file(filename,"rb")
on.exit(close(file))
raw <- readBin(file, "raw", FileInfo(filename)$size)
return(arrow::read_parquet(raw, ...))
}

                And to write,
                
WriteParquet <- function(df, filepath, ...) {
stream <- BufferOutputStream$create()
write_parquet(df, stream, ...)
raw <- stream$finish()$data()
file <- file(filepath, "wb")
on.exit(close(file)
writeBin(raw, file)
return(invisible())
}

                At the C++ level, we are interacting with  R_new_custom_connection defined here:
                https://github.com/wch/r-source/blob/trunk/src/include/R_ext/Connections.h
                I've been very impressed with how feature-rich arrow is. It would be nice to see this API supported as well.
                Reporter: Michael Quinn
                Assignee: Dewey Dunnington / @paleolimbot
                Related issues:
                PRs and other links:
                Note: This issue was originally created as ARROW-9235. Please see the migration documentation for further details.
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