Class GroupOperation
- java.lang.Object
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- org.apache.solr.client.solrj.io.ops.GroupOperation
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- All Implemented Interfaces:
Serializable
,ReduceOperation
,StreamOperation
,Expressible
public class GroupOperation extends Object implements ReduceOperation
- See Also:
- Serialized Form
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Constructor Summary
Constructors Constructor Description GroupOperation(StreamComparator streamComparator, int size)
GroupOperation(StreamExpression expression, StreamFactory factory)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
operate(Tuple tuple)
Tuple
reduce()
Explanation
toExplanation(StreamFactory factory)
Returns an explanation about the stream objectStreamExpressionParameter
toExpression(StreamFactory factory)
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Constructor Detail
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GroupOperation
public GroupOperation(StreamExpression expression, StreamFactory factory) throws IOException
- Throws:
IOException
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GroupOperation
public GroupOperation(StreamComparator streamComparator, int size)
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Method Detail
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toExpression
public StreamExpressionParameter toExpression(StreamFactory factory) throws IOException
- Specified by:
toExpression
in interfaceExpressible
- Throws:
IOException
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toExplanation
public Explanation toExplanation(StreamFactory factory) throws IOException
Description copied from interface:Expressible
Returns an explanation about the stream object- Specified by:
toExplanation
in interfaceExpressible
- Parameters:
factory
- Stream factory for this, contains information about the function name- Returns:
- Explanation about this stream object containing explanations of any child stream objects
- Throws:
IOException
- throw on any error
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reduce
public Tuple reduce()
- Specified by:
reduce
in interfaceReduceOperation
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operate
public void operate(Tuple tuple)
- Specified by:
operate
in interfaceStreamOperation
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