public class IdentityExpression extends VectorExpression
VectorExpression.Type
childExpressions, inputTypes, outputType
Constructor and Description |
---|
IdentityExpression() |
IdentityExpression(int colNum,
String type) |
Modifier and Type | Method and Description |
---|---|
void |
evaluate(VectorizedRowBatch batch)
This is the primary method to implement expression logic.
|
int |
getColNum() |
VectorExpressionDescriptor.Descriptor |
getDescriptor() |
int |
getOutputColumn()
Returns the index of the output column in the array
of column vectors.
|
String |
getOutputType()
Returns type of the output column.
|
String |
getType() |
static boolean |
isColumnOnly(VectorExpression ve) |
void |
setColNum(int colNum) |
void |
setType(String type) |
evaluateChildren, getChildExpressions, getInputTypes, setChildExpressions, setInputTypes, setOutputType, toString
public IdentityExpression()
public IdentityExpression(int colNum, String type)
public void evaluate(VectorizedRowBatch batch)
VectorExpression
evaluate
in class VectorExpression
public static boolean isColumnOnly(VectorExpression ve)
public int getOutputColumn()
VectorExpression
getOutputColumn
in class VectorExpression
public String getOutputType()
VectorExpression
getOutputType
in class VectorExpression
public int getColNum()
public String getType()
public void setColNum(int colNum)
public void setType(String type)
public VectorExpressionDescriptor.Descriptor getDescriptor()
getDescriptor
in class VectorExpression
Copyright © 2016 The Apache Software Foundation. All rights reserved.