Package org.apache.sysds.runtime.io
Class FrameWriter
- java.lang.Object
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- org.apache.sysds.runtime.io.FrameWriter
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- Direct Known Subclasses:
FrameWriterBinaryBlock,FrameWriterProto,FrameWriterTextCell,FrameWriterTextCSV
public abstract class FrameWriter extends Object
Base class for all format-specific frame writers. Every writer is required to implement the basic write functionality but might provide additional custom functionality. Any non-default parameters (e.g., CSV read properties) should be passed into custom constructors. There is also a factory for creating format-specific writers.
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Constructor Summary
Constructors Constructor Description FrameWriter()
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Method Summary
All Methods Static Methods Instance Methods Abstract Methods Concrete Methods Modifier and Type Method Description static FrameBlock[]createFrameBlocksForReuse(Types.ValueType[] schema, String[] names, long rlen)static FrameBlockgetFrameBlockForReuse(FrameBlock[] blocks)abstract voidwriteFrameToHDFS(FrameBlock src, String fname, long rlen, long clen)
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Method Detail
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writeFrameToHDFS
public abstract void writeFrameToHDFS(FrameBlock src, String fname, long rlen, long clen) throws IOException, DMLRuntimeException
- Throws:
IOExceptionDMLRuntimeException
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createFrameBlocksForReuse
public static FrameBlock[] createFrameBlocksForReuse(Types.ValueType[] schema, String[] names, long rlen)
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getFrameBlockForReuse
public static FrameBlock getFrameBlockForReuse(FrameBlock[] blocks)
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