org.apache.hadoop.hive.ql.exec
Class ExprNodeEvaluatorHead
java.lang.Object
org.apache.hadoop.hive.ql.exec.ExprNodeEvaluator
org.apache.hadoop.hive.ql.exec.ExprNodeEvaluatorHead
public class ExprNodeEvaluatorHead
- extends ExprNodeEvaluator
Increases version number of each evaluations for correct caching
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
ExprNodeEvaluatorHead
public ExprNodeEvaluatorHead(ExprNodeEvaluator referencing)
initialize
public ObjectInspector initialize(ObjectInspector rowInspector)
throws HiveException
- Description copied from class:
ExprNodeEvaluator
- Initialize should be called once and only once. Return the ObjectInspector
for the return value, given the rowInspector.
- Specified by:
initialize
in class ExprNodeEvaluator
- Throws:
HiveException
_evaluate
protected Object _evaluate(Object row,
int version)
throws HiveException
- Description copied from class:
ExprNodeEvaluator
- Evaluate value
- Specified by:
_evaluate
in class ExprNodeEvaluator
- Throws:
HiveException
Copyright © 2012 The Apache Software Foundation