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

Class IfExprStringScalarStringGroupColumn

java.lang.Object

org.apache.hadoop.hive.ql.exec.vector.expressions.VectorExpression

org.apache.hadoop.hive.ql.exec.vector.expressions.IfExprStringScalarStringGroupColumn

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

IfExprCharScalarStringGroupColumn, IfExprVarCharScalarStringGroupColumn

public class IfExprStringScalarStringGroupColumn
extends VectorExpression

Compute IF(expr1, expr2, expr3) for 3 input column expressions. The first is always a boolean (LongColumnVector). The second is a string scalar. The third is a string column or non-constant expression result.

See Also:

Serialized Form

Field Summary

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

childExpressions, inputDataTypePhysicalVariations, inputTypeInfos, outputColumnNum, outputDataTypePhysicalVariation, outputTypeInfo

Constructor Summary

Constructors

Constructor and Description
IfExprStringScalarStringGroupColumn()
IfExprStringScalarStringGroupColumn(int arg1Column, byte[] arg2Scalar, int arg3Column, int outputColumnNum)

Method Summary

Modifier and Type	Method and Description
void	evaluate(org.apache.hadoop.hive.ql.exec.vector.VectorizedRowBatch batch) This is the primary method to implement expression logic.
VectorExpressionDescriptor.Descriptor	getDescriptor()
String	vectorExpressionParameters()

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

displayArrayOfUtf8ByteArrays, displayUtf8Bytes, doTransientInit, doTransientInit, evaluateChildren, getChildExpressions, getColumnParamString, getDoubleValueParamString, getInputDataTypePhysicalVariations, getInputTypeInfos, getLongValueParamString, getOutputColumnNum, getOutputColumnVectorType, getOutputDataTypePhysicalVariation, getOutputTypeInfo, getParamTypeString, getTypeName, init, setChildExpressions, setInputDataTypePhysicalVariations, setInputTypeInfos, setOutputDataTypePhysicalVariation, setOutputTypeInfo, supportsCheckedExecution, toString, transientInit

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

IfExprStringScalarStringGroupColumn

public IfExprStringScalarStringGroupColumn(int arg1Column,
                                           byte[] arg2Scalar,
                                           int arg3Column,
                                           int outputColumnNum)

IfExprStringScalarStringGroupColumn

public IfExprStringScalarStringGroupColumn()

Method Detail

evaluate

public void evaluate(org.apache.hadoop.hive.ql.exec.vector.VectorizedRowBatch batch)
              throws HiveException

Description copied from class: VectorExpression

This is the primary method to implement expression logic.

Specified by:

evaluate in class VectorExpression

Throws:

HiveException

vectorExpressionParameters

public String vectorExpressionParameters()

Specified by:

vectorExpressionParameters in class VectorExpression

getDescriptor

public VectorExpressionDescriptor.Descriptor getDescriptor()

Specified by:

getDescriptor in class VectorExpression