public abstract class Encoder extends Object implements Serializable
| Modifier and Type | Method and Description | 
|---|---|
| abstract MatrixBlock | apply(FrameBlock in,
     MatrixBlock out)Encode input data blockwise according to existing transform meta
 data (transform apply). | 
| abstract void | build(FrameBlock in)Build the transform meta data for the given block input. | 
| abstract MatrixBlock | encode(FrameBlock in,
      MatrixBlock out)Block encode: build and apply (transform encode). | 
| int[] | getColList() | 
| MatrixBlock | getColMapping(FrameBlock meta,
             MatrixBlock out)Obtain the column mapping of encoded frames based on the passed
 meta data frame. | 
| abstract FrameBlock | getMetaData(FrameBlock out)Construct a frame block out of the transform meta data. | 
| int | getNumCols() | 
| int | initColList(int[] colList) | 
| int | initColList(org.apache.wink.json4j.JSONArray attrs) | 
| abstract void | initMetaData(FrameBlock meta)Sets up the required meta data for a subsequent call to apply. | 
| boolean | isApplicable()Indicates if this encoder is applicable, i.e, if there is at 
 least one column to encode. | 
| int | isApplicable(int colID)Indicates if this encoder is applicable for the given column ID,
 i.e., if it is subject to this transformation. | 
| void | mergeAt(Encoder other,
       int row,
       int col)Merges another encoder, of a compatible type, in after a certain position. | 
| void | setColList(int[] colList) | 
| Encoder | subRangeEncoder(IndexRange ixRange)Returns a new Encoder that only handles a sub range of columns. | 
| void | updateIndexRanges(long[] beginDims,
                 long[] endDims)Update index-ranges to after encoding. | 
public int[] getColList()
public void setColList(int[] colList)
public int getNumCols()
public int initColList(org.apache.wink.json4j.JSONArray attrs)
public int initColList(int[] colList)
public boolean isApplicable()
public int isApplicable(int colID)
colID - column IDpublic abstract MatrixBlock encode(FrameBlock in, MatrixBlock out)
in - input frame blockout - output matrix blockpublic abstract void build(FrameBlock in)
in - input frame blockpublic abstract MatrixBlock apply(FrameBlock in, MatrixBlock out)
in - input frame blockout - output matrix blockpublic Encoder subRangeEncoder(IndexRange ixRange)
ixRange - the range (1-based, begin inclusive, end exclusive)public void mergeAt(Encoder other, int row, int col)
Encoders are compatible with themselves and EncoderComposite is compatible with every
 other Encoder.other - the encoder that should be merged inrow - the row where it should be placed (1-based)col - the col where it should be placed (1-based)public void updateIndexRanges(long[] beginDims,
                              long[] endDims)
beginDims - begin dimensions of rangeendDims - end dimensions of rangepublic abstract FrameBlock getMetaData(FrameBlock out)
out - output frame blockpublic abstract void initMetaData(FrameBlock meta)
meta - frame blockpublic MatrixBlock getColMapping(FrameBlock meta, MatrixBlock out)
meta - meta data frame blockout - output matrixCopyright © 2020 The Apache Software Foundation. All rights reserved.