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

Class StringTrimColScalarBase

java.lang.Object

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

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

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

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

StringLTrimColScalar, StringRTrimColScalar, StringTrimColScalar

public abstract class StringTrimColScalarBase
extends StringUnaryUDFDirect

This is a superclass for binary string functions that operate directly on the input and set the output. First parameter is a column second is a scalar. It is suitable for direct, in-place operations on strings, such as for fast implementations of two parameter version of TRIM(), LTRIM(), and RTRIM().

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected static byte[]	EMPTY_BYTES

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
StringTrimColScalarBase()
StringTrimColScalarBase(int inputColumn, byte[] trimChars, int outputColumnNum)

Method Summary

Modifier and Type	Method and Description
VectorExpressionDescriptor.Descriptor	getDescriptor()
protected boolean	shouldTrim(int character)

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

evaluate, func, 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

Field Detail

EMPTY_BYTES

protected static final byte[] EMPTY_BYTES

Constructor Detail

StringTrimColScalarBase

public StringTrimColScalarBase(int inputColumn,
                               byte[] trimChars,
                               int outputColumnNum)

StringTrimColScalarBase

public StringTrimColScalarBase()

Method Detail

shouldTrim

protected boolean shouldTrim(int character)

getDescriptor

public VectorExpressionDescriptor.Descriptor getDescriptor()

Overrides:

getDescriptor in class StringUnaryUDFDirect