Interface MatrixBlockDataOutput
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- All Known Implementing Classes:
CacheDataOutput,FastBufferedDataOutputStream
public interface MatrixBlockDataOutputAny data output that is intended to support fast serialization / write of entire blocks should implement this interface. On write of a matrix block we check if the output stream is an implementation of this interface, if yes we directly pass the entire block instead of value-by-value. Known implementation classes: - CacheDataOutput (cache serialization into in-memory write buffer) - FastBufferedDataOutputStream (cache eviction to local file system)
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description voidwriteDoubleArray(int len, double[] varr)Writes the double array of a dense block to the data output.voidwriteSparseRows(int rlen, SparseBlock rows)Writes the sparse rows array of a sparse block to the data output.
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Method Detail
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writeDoubleArray
void writeDoubleArray(int len, double[] varr) throws IOExceptionWrites the double array of a dense block to the data output.- Parameters:
len- ?varr- ?- Throws:
IOException- if IOException occurs
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writeSparseRows
void writeSparseRows(int rlen, SparseBlock rows) throws IOExceptionWrites the sparse rows array of a sparse block to the data output.- Parameters:
rlen- ?rows- sparse block- Throws:
IOException- if IOException occurs
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