public abstract class Decoder extends Object implements Externalizable
| Modifier and Type | Method and Description |
|---|---|
abstract FrameBlock |
decode(MatrixBlock in,
FrameBlock out)
Block decode API converting a matrix block into a frame block.
|
String[] |
getColnames() |
Types.ValueType[] |
getSchema() |
abstract void |
initMetaData(FrameBlock meta) |
void |
readExternal(ObjectInput in)
Redirects the default java serialization via externalizable to our default
hadoop writable serialization for efficient broadcast/rdd deserialization.
|
void |
setColnames(String[] colnames) |
Decoder |
subRangeDecoder(int colStart,
int colEnd,
int dummycodedOffset)
Returns a new Decoder that only handles a sub range of columns.
|
void |
updateIndexRanges(long[] beginDims,
long[] endDims)
Update index-ranges to after decoding.
|
void |
writeExternal(ObjectOutput os)
Redirects the default java serialization via externalizable to our default
hadoop writable serialization for efficient broadcast/rdd serialization.
|
public Types.ValueType[] getSchema()
public void setColnames(String[] colnames)
public String[] getColnames()
public abstract FrameBlock decode(MatrixBlock in, FrameBlock out)
in - input matrix blockout - output frame blockpublic Decoder subRangeDecoder(int colStart, int colEnd, int dummycodedOffset)
colStart - the start index of the sub-range (1-based, inclusive)colEnd - the end index of the sub-range (1-based, exclusive)dummycodedOffset - the offset of dummycoded segments before colStartpublic void updateIndexRanges(long[] beginDims,
long[] endDims)
beginDims - the begin indexes before encodingendDims - the end indexes before encodingpublic abstract void initMetaData(FrameBlock meta)
public void writeExternal(ObjectOutput os) throws IOException
writeExternal in interface Externalizableos - object outputIOException - if IOException occurspublic void readExternal(ObjectInput in) throws IOException
readExternal in interface Externalizablein - object inputIOException - if IOException occurCopyright © 2021 The Apache Software Foundation. All rights reserved.