cascading.operation.text
Class FieldJoiner

java.lang.Object
  cascading.operation.BaseOperation
      cascading.operation.text.FieldJoiner

All Implemented Interfaces:

Function, Operation, Serializable

public class FieldJoiner
extends BaseOperation
implements Function

Class FieldJoiner joins the values in a Tuple with a given delimiter and stuffs the result into a new field.

See Also:

Serialized Form

Field Summary

static String

FIELD_NAME Field FIELD_NAME

Fields inherited from class cascading.operation.BaseOperation

fieldDeclaration, numArgs, trace

Fields inherited from interface cascading.operation.Operation

ANY

Constructor Summary

FieldJoiner(Fields fieldDeclaration)
Constructor FieldJoiner creates a new FieldJoiner instance.

FieldJoiner(Fields fieldDeclaration, String delimiter)
Constructor FieldJoiner creates a new FieldJoiner instance.

FieldJoiner(String delimiter)
Constructor FieldJoiner creates a new FieldJoiner instance.

Method Summary

String	getDelimiter() Method getFormat returns the delimiter of this FieldJoiner object.
void	operate(FlowProcess flowProcess, FunctionCall functionCall) Method operate provides the implementation of this Function.

Methods inherited from class cascading.operation.BaseOperation

cleanup, getFieldDeclaration, getNumArgs, getTrace, prepare, printOperationInternal, toString, toStringInternal

Methods inherited from class java.lang.Object

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

Methods inherited from interface cascading.operation.Operation

cleanup, getFieldDeclaration, getNumArgs, prepare

Field Detail

FIELD_NAME

public static final String FIELD_NAME

Field FIELD_NAME

See Also:

Constant Field Values

Constructor Detail

FieldJoiner

public FieldJoiner(String delimiter)

Constructor FieldJoiner creates a new FieldJoiner instance.

Parameters:

delimiter - of type String

FieldJoiner

public FieldJoiner(Fields fieldDeclaration)

Constructor FieldJoiner creates a new FieldJoiner instance.

Parameters:

fieldDeclaration - of type Fields

FieldJoiner

public FieldJoiner(Fields fieldDeclaration,
                   String delimiter)

Constructor FieldJoiner creates a new FieldJoiner instance.

Parameters:

fieldDeclaration - of type Fields

delimiter - of type String

Method Detail

getDelimiter

public String getDelimiter()

Method getFormat returns the delimiter of this FieldJoiner object.

Returns:

the delimiter (type String) of this FieldJoiner object.

operate

public void operate(FlowProcess flowProcess,
                    FunctionCall functionCall)

Description copied from interface: Function

Method operate provides the implementation of this Function.

Specified by:

operate in interface Function

Parameters:

flowProcess - of type FlowProcess

functionCall - of type FunctionCall

See Also:

Function.operate(cascading.flow.FlowProcess,cascading.operation.FunctionCall)