org.apache.hadoop.hive.ql.exec
Class ExprNodeColumnEvaluator
java.lang.Object
org.apache.hadoop.hive.ql.exec.ExprNodeEvaluator<ExprNodeColumnDesc>
org.apache.hadoop.hive.ql.exec.ExprNodeColumnEvaluator
public class ExprNodeColumnEvaluator
- extends ExprNodeEvaluator<ExprNodeColumnDesc>
This evaluator gets the column from the row object.
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
ExprNodeColumnEvaluator
public ExprNodeColumnEvaluator(ExprNodeColumnDesc expr)
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<ExprNodeColumnDesc>
- 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<ExprNodeColumnDesc>
- Throws:
HiveException
Copyright © 2012 The Apache Software Foundation