org.apache.arrow.vector.ipc

クラス ArrowWriter

java.lang.Object

org.apache.arrow.vector.ipc.ArrowWriter

すべての実装されたインタフェース:

AutoCloseable

直系の既知のサブクラス:

ArrowFileWriter, ArrowStreamWriter

public abstract class ArrowWriter
extends Object
implements AutoCloseable

Abstract base class for implementing Arrow writers for IPC over a WriteChannel

フィールドのサマリー

フィールド

修飾子とタイプ	フィールドと説明
protected static org.slf4j.Logger	LOGGER
protected WriteChannel	out
protected Schema	schema

コンストラクタのサマリー

コンストラクタ

修飾子	コンストラクタと説明
protected	ArrowWriter(VectorSchemaRoot root, DictionaryProvider provider, WritableByteChannel out) Note: fields are not closed when the writer is closed

メソッドのサマリー

修飾子とタイプ	メソッドと説明
long	bytesWritten()
void	close()
void	end()
protected void	endInternal(WriteChannel out)
void	start()
protected void	startInternal(WriteChannel out)
void	writeBatch()
protected ArrowBlock	writeDictionaryBatch(ArrowDictionaryBatch batch)
protected ArrowBlock	writeRecordBatch(ArrowRecordBatch batch)

クラスから継承されたメソッド java.lang.Object

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

フィールドの詳細

LOGGER

protected static final org.slf4j.Logger LOGGER

schema

protected final Schema schema

out

protected final WriteChannel out

コンストラクタの詳細

ArrowWriter

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

Note: fields are not closed when the writer is closed

パラメータ:

root - the vectors to write to the output

provider - where to find the dictionaries

out - the output where to write

メソッドの詳細

start

public void start()
           throws IOException

例外:

IOException

writeBatch

public void writeBatch()
                throws IOException

例外:

IOException

writeDictionaryBatch

protected ArrowBlock writeDictionaryBatch(ArrowDictionaryBatch batch)
                                   throws IOException

例外:

IOException

writeRecordBatch

protected ArrowBlock writeRecordBatch(ArrowRecordBatch batch)
                               throws IOException

例外:

IOException

end

public void end()
         throws IOException

例外:

IOException

bytesWritten

public long bytesWritten()

startInternal

protected void startInternal(WriteChannel out)
                      throws IOException

例外:

IOException

endInternal

protected void endInternal(WriteChannel out)
                    throws IOException

例外:

IOException

close

public void close()

定義:

close インタフェース内 AutoCloseable