org.apache.arrow.vector.ipc

Class ArrowWriter

java.lang.Object

org.apache.arrow.vector.ipc.ArrowWriter

All Implemented Interfaces:

AutoCloseable

Direct Known Subclasses:

ArrowFileWriter, ArrowStreamWriter

public abstract class ArrowWriter
extends Object
implements AutoCloseable

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ArrowWriter(VectorSchemaRoot root, DictionaryProvider provider, WritableByteChannel out) Note: fields are not closed when the writer is closed

Method Summary

Methods

Modifier and Type	Method and Description
long	bytesWritten()
void	close()
void	end()
protected abstract void	endInternal(WriteChannel out, Schema schema, List<ArrowBlock> dictionaries, List<ArrowBlock> records)
void	start()
protected abstract void	startInternal(WriteChannel out)
void	writeBatch()
protected void	writeRecordBatch(ArrowRecordBatch batch)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ArrowWriter

protected ArrowWriter(VectorSchemaRoot root,
           DictionaryProvider provider,
           WritableByteChannel out)

Note: fields are not closed when the writer is closed

Parameters:

root - the vectors to write to the output

provider - where to find the dictionaries

out - the output where to write

Method Detail

start

public void start()
           throws IOException

Throws:

IOException

writeBatch

public void writeBatch()
                throws IOException

Throws:

IOException

writeRecordBatch

protected void writeRecordBatch(ArrowRecordBatch batch)
                         throws IOException

Throws:

IOException

end

public void end()
         throws IOException

Throws:

IOException

bytesWritten

public long bytesWritten()

startInternal

protected abstract void startInternal(WriteChannel out)
                               throws IOException

Throws:

IOException

endInternal

protected abstract void endInternal(WriteChannel out,
               Schema schema,
               List<ArrowBlock> dictionaries,
               List<ArrowBlock> records)
                             throws IOException

Throws:

IOException

close

public void close()

Specified by:

close in interface AutoCloseable