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

Class VectorUDFAdaptor

java.lang.Object

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

org.apache.hadoop.hive.ql.exec.vector.udf.VectorUDFAdaptor

All Implemented Interfaces:

Serializable

public class VectorUDFAdaptor
extends VectorExpression

A VectorUDFAdaptor is a vectorized expression for invoking a custom UDF on zero or more input vectors or constants which are the function arguments.

See Also:

Serialized Form

Field Summary

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

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

Constructor Summary

Constructors

Constructor and Description
VectorUDFAdaptor()
VectorUDFAdaptor(ExprNodeGenericFuncDesc expr, int outputColumnNum, String resultType, VectorUDFArgDesc[] argDescs)

Method Summary

Modifier and Type	Method and Description
void	evaluate(VectorizedRowBatch batch) This is the primary method to implement expression logic.
VectorUDFArgDesc[]	getArgDescs()
VectorExpressionDescriptor.Descriptor	getDescriptor()
void	init()
void	setArgDescs(VectorUDFArgDesc[] argDescs)
void	setSuppressEvaluateExceptions(boolean suppressEvaluateExceptions)
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, transientInit

Methods inherited from class java.lang.Object

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

Constructor Detail

VectorUDFAdaptor

public VectorUDFAdaptor()

VectorUDFAdaptor

public VectorUDFAdaptor(ExprNodeGenericFuncDesc expr,
                        int outputColumnNum,
                        String resultType,
                        VectorUDFArgDesc[] argDescs)
                 throws HiveException

Throws:

HiveException

Method Detail

setSuppressEvaluateExceptions

public void setSuppressEvaluateExceptions(boolean suppressEvaluateExceptions)

init

public void init()
          throws HiveException,
                 UDFArgumentException

Throws:

HiveException

UDFArgumentException

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

getArgDescs

public VectorUDFArgDesc[] getArgDescs()

setArgDescs

public void setArgDescs(VectorUDFArgDesc[] argDescs)