org.apache.hadoop.hive.ql.exec.vector.expressions
Class StringLength

java.lang.Object
  org.apache.hadoop.hive.ql.exec.vector.expressions.VectorExpression
      org.apache.hadoop.hive.ql.exec.vector.expressions.StringLength

All Implemented Interfaces:

Serializable

public class StringLength
extends VectorExpression

Calculate the length of the strings in the input column vector, and store it in the output column vector.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.hive.ql.exec.vector.expressions.VectorExpression

VectorExpression.Type

Constructor Summary

StringLength()

StringLength(int colNum, int outputColumn)

Method Summary

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.
void	setColNum(int colNum)
void	setOutputColumn(int outputColumn)

Methods inherited from class org.apache.hadoop.hive.ql.exec.vector.expressions.VectorExpression

getChildExpressions, getInputTypes, setChildExpressions, setInputTypes, setOutputType, toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

StringLength

public StringLength(int colNum,
                    int outputColumn)

StringLength

public StringLength()

Method Detail

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

getColNum

public int getColNum()

setColNum

public void setColNum(int colNum)

setOutputColumn

public void setOutputColumn(int outputColumn)

getDescriptor

public VectorExpressionDescriptor.Descriptor getDescriptor()

Specified by:

getDescriptor in class VectorExpression