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

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

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

FilterConstantBooleanVectorExpression

public class ConstantVectorExpression
extends VectorExpression

Constant is represented as a vector with repeating values.

See Also:

Serialized Form

Constructor Summary

ConstantVectorExpression()

ConstantVectorExpression(int outputColumn, byte[] value)

ConstantVectorExpression(int outputColumn, Decimal128 value)

ConstantVectorExpression(int outputColumn, double value)

ConstantVectorExpression(int outputColumn, long value)

Method Summary

void	evaluate(VectorizedRowBatch vrg) This is the primary method to implement expression logic.
byte[]	getBytesValue()
VectorExpressionDescriptor.Descriptor	getDescriptor()
double	getDoubleValue()
long	getLongValue()
int	getOutputColumn() Returns the index of the output column in the array of column vectors.
org.apache.hadoop.hive.ql.exec.vector.expressions.ConstantVectorExpression.Type	getType()
String	getTypeString()
void	setBytesValue(byte[] bytesValue)
void	setDecimalValue(Decimal128 decimalValue)
void	setDoubleValue(double doubleValue)
void	setLongValue(long longValue)
void	setOutputColumn(int outputColumn)
void	setOutputType(String type) Set type of the output column.
void	setType(org.apache.hadoop.hive.ql.exec.vector.expressions.ConstantVectorExpression.Type type)
void	setTypeString(String typeString)

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

getChildExpressions, getInputTypes, getOutputType, setChildExpressions, setInputTypes, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ConstantVectorExpression

public ConstantVectorExpression()

ConstantVectorExpression

public ConstantVectorExpression(int outputColumn,
                                long value)

ConstantVectorExpression

public ConstantVectorExpression(int outputColumn,
                                double value)

ConstantVectorExpression

public ConstantVectorExpression(int outputColumn,
                                byte[] value)

ConstantVectorExpression

public ConstantVectorExpression(int outputColumn,
                                Decimal128 value)

Method Detail

evaluate

public void evaluate(VectorizedRowBatch vrg)

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

getLongValue

public long getLongValue()

setLongValue

public void setLongValue(long longValue)

getDoubleValue

public double getDoubleValue()

setDoubleValue

public void setDoubleValue(double doubleValue)

getBytesValue

public byte[] getBytesValue()

setBytesValue

public void setBytesValue(byte[] bytesValue)

setDecimalValue

public void setDecimalValue(Decimal128 decimalValue)

getTypeString

public String getTypeString()

setTypeString

public void setTypeString(String typeString)

setOutputColumn

public void setOutputColumn(int outputColumn)

getType

public org.apache.hadoop.hive.ql.exec.vector.expressions.ConstantVectorExpression.Type getType()

setType

public void setType(org.apache.hadoop.hive.ql.exec.vector.expressions.ConstantVectorExpression.Type type)

setOutputType

public void setOutputType(String type)

Description copied from class: VectorExpression

Set type of the output column.

Overrides:

setOutputType in class VectorExpression

getDescriptor

public VectorExpressionDescriptor.Descriptor getDescriptor()

Specified by:

getDescriptor in class VectorExpression