cascading.operation.regex

Class RegexSplitter

java.lang.Object

cascading.operation.BaseOperation<C>

cascading.operation.regex.RegexOperation<Pair<java.util.regex.Pattern,Tuple>>

cascading.operation.regex.RegexSplitter

All Implemented Interfaces:

DeclaresResults, Function<Pair<java.util.regex.Pattern,Tuple>>, Operation<Pair<java.util.regex.Pattern,Tuple>>, Traceable, java.io.Serializable

public class RegexSplitter
extends RegexOperation<Pair<java.util.regex.Pattern,Tuple>>
implements Function<Pair<java.util.regex.Pattern,Tuple>>

Class RegexSplitter will split an incoming argument value by the given regex delimiter patternString.

RegexSplitter only expects one field value. If more than one argument value is passed, only the first is handled, the remainder are ignored.

Note a null valued argument passed to the parser will be converted to an empty string ("") before the regex is applied.

Any Object value will be coerced to a String type if type information is provided. See the CoercibleType interface to control how custom Object types are converted to String values.

See Also:

Serialized Form

Field Summary

Fields inherited from class cascading.operation.regex.RegexOperation

patternString

Fields inherited from class cascading.operation.BaseOperation

fieldDeclaration, numArgs, trace

Fields inherited from interface cascading.operation.Operation

ANY

Constructor Summary

Constructors

Constructor and Description
RegexSplitter(Fields fieldDeclaration) Constructor RegexOperation creates a new RegexOperation instance, where the delimiter is the tab character.
RegexSplitter(Fields fieldDeclaration, java.lang.String patternString) Constructor RegexSplitter creates a new RegexSplitter instance.
RegexSplitter(java.lang.String patternString) Constructor RegexSplitter creates a new RegexSplitter instance.

Method Summary

Methods

Modifier and Type	Method and Description
void	operate(FlowProcess flowProcess, FunctionCall<Pair<java.util.regex.Pattern,Tuple>> functionCall) Method operate provides the implementation of this Function.
void	prepare(FlowProcess flowProcess, OperationCall<Pair<java.util.regex.Pattern,Tuple>> operationCall) Method prepare does nothing, and may safely be overridden.

Methods inherited from class cascading.operation.regex.RegexOperation

equals, getPattern, getPatternString, hashCode

Methods inherited from class cascading.operation.BaseOperation

cleanup, flush, getFieldDeclaration, getNumArgs, getTrace, isSafe, printOperationInternal, toString, toStringInternal

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface cascading.operation.Operation

cleanup, flush, getFieldDeclaration, getNumArgs, isSafe

Constructor Detail

RegexSplitter

@ConstructorProperties(value="patternString")
public RegexSplitter(java.lang.String patternString)

Constructor RegexSplitter creates a new RegexSplitter instance.

Parameters:

patternString - of type String

RegexSplitter

@ConstructorProperties(value="fieldDeclaration")
public RegexSplitter(Fields fieldDeclaration)

Constructor RegexOperation creates a new RegexOperation instance, where the delimiter is the tab character.

Parameters:

fieldDeclaration - of type Fields

RegexSplitter

@ConstructorProperties(value={"fieldDeclaration","patternString"})
public RegexSplitter(Fields fieldDeclaration,
                                   java.lang.String patternString)

Constructor RegexSplitter creates a new RegexSplitter instance.

Parameters:

fieldDeclaration - of type Fields

patternString - of type String

Method Detail

prepare

public void prepare(FlowProcess flowProcess,
           OperationCall<Pair<java.util.regex.Pattern,Tuple>> operationCall)

Description copied from class: BaseOperation

Method prepare does nothing, and may safely be overridden.

Specified by:

prepare in interface Operation<Pair<java.util.regex.Pattern,Tuple>>

Overrides:

prepare in class BaseOperation<Pair<java.util.regex.Pattern,Tuple>>

operate

public void operate(FlowProcess flowProcess,
           FunctionCall<Pair<java.util.regex.Pattern,Tuple>> functionCall)

Description copied from interface: Function

Method operate provides the implementation of this Function.

Specified by:

operate in interface Function<Pair<java.util.regex.Pattern,Tuple>>

Parameters:

flowProcess - of type FlowProcess

functionCall - of type FunctionCall