org.apache.hadoop.hive.ql.exec.vector.expressions
Class IfExprStringColumnStringColumn
java.lang.Object
org.apache.hadoop.hive.ql.exec.vector.expressions.VectorExpression
org.apache.hadoop.hive.ql.exec.vector.expressions.IfExprStringColumnStringColumn
- All Implemented Interfaces:
- Serializable
public class IfExprStringColumnStringColumn
- extends VectorExpression
Compute IF(expr1, expr2, expr3) for 3 input column expressions.
The first is always a boolean (LongColumnVector).
The second and third are string columns or string expression results.
- See Also:
- Serialized Form
IfExprStringColumnStringColumn
public IfExprStringColumnStringColumn(int arg1Column,
int arg2Column,
int arg3Column,
int outputColumn)
IfExprStringColumnStringColumn
public IfExprStringColumnStringColumn()
evaluate
public void evaluate(VectorizedRowBatch batch)
- Description copied from class:
VectorExpression
- This is the primary method to implement expression logic.
- Specified by:
evaluate
in class VectorExpression
getOutputColumn
public int getOutputColumn()
- Description copied from class:
VectorExpression
- Returns the index of the output column in the array
of column vectors. If not applicable, -1 is returned.
- Specified by:
getOutputColumn
in class VectorExpression
- Returns:
- Index of the output column
getOutputType
public String getOutputType()
- Description copied from class:
VectorExpression
- Returns type of the output column.
- Overrides:
getOutputType
in class VectorExpression
getArg1Column
public int getArg1Column()
setArg1Column
public void setArg1Column(int colNum)
getArg2Column
public int getArg2Column()
setArg2Column
public void setArg2Column(int colNum)
getArg3Column
public int getArg3Column()
setArg3Column
public void setArg3Column(int colNum)
setOutputColumn
public void setOutputColumn(int outputColumn)
getDescriptor
public VectorExpressionDescriptor.Descriptor getDescriptor()
- Specified by:
getDescriptor
in class VectorExpression
Copyright © 2014 The Apache Software Foundation. All rights reserved.