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

Class CastStringToLong

java.lang.Object

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

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

All Implemented Interfaces:

Serializable

public class CastStringToLong
extends VectorExpression

Cast a string to a long. If other functions besides cast need to take a string in and produce a long, you can subclass this class or convert it to a superclass, and implement different "func()" methods for each operation.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected PrimitiveObjectInspector.PrimitiveCategory	integerPrimitiveCategory

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

childExpressions, inputColumnNum, inputDataTypePhysicalVariations, inputTypeInfos, LOG, outputColumnNum, outputDataTypePhysicalVariation, outputTypeInfo

Constructor Summary

Constructors

Constructor and Description
CastStringToLong()
CastStringToLong(int inputColumn, int outputColumnNum)

Method Summary

Modifier and Type	Method and Description
void	evaluate(VectorizedRowBatch batch) This is the primary method to implement expression logic.
protected void	func(LongColumnVector outputColVector, BytesColumnVector inputColVector, int batchIndex) Convert input string to a long, at position i in the respective vectors.
VectorExpressionDescriptor.Descriptor	getDescriptor()
void	transientInit(org.apache.hadoop.conf.Configuration conf)
String	vectorExpressionParameters()

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

displayArrayOfUtf8ByteArrays, displayUtf8Bytes, doTransientInit, doTransientInit, evaluateChildren, getChildExpressions, getChildExpressionsForTransientInit, getColumnParamString, getDoubleValueParamString, getInputDataTypePhysicalVariations, getInputTypeInfos, getLongValueParamString, getOutputColumnNum, getOutputColumnVectorType, getOutputDataTypePhysicalVariation, getOutputTypeInfo, getParamTypeString, getTypeName, init, setChildExpressions, setInputDataTypePhysicalVariations, setInputTypeInfos, setOutputDataTypePhysicalVariation, setOutputTypeInfo, shouldConvertDecimal64ToDecimal, supportsCheckedExecution, toString

Methods inherited from class java.lang.Object

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

Field Detail

integerPrimitiveCategory

protected transient PrimitiveObjectInspector.PrimitiveCategory integerPrimitiveCategory

Constructor Detail

CastStringToLong

public CastStringToLong(int inputColumn,
                        int outputColumnNum)

CastStringToLong

public CastStringToLong()

Method Detail

transientInit

public void transientInit(org.apache.hadoop.conf.Configuration conf)
                   throws HiveException

Overrides:

transientInit in class VectorExpression

Throws:

HiveException

func

protected void func(LongColumnVector outputColVector,
                    BytesColumnVector inputColVector,
                    int batchIndex)

Convert input string to a long, at position i in the respective vectors.

evaluate

public void evaluate(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