Package cz.o2.proxima.core.transform

Class IdentityTransformation

java.lang.Object

cz.o2.proxima.core.transform.IdentityTransformation

All Implemented Interfaces:

DataOperatorAgnostic, DataOperatorAware, ElementWiseProxyTransform, ElementWiseTransformation, ProxyTransform, Transformation, java.io.Serializable

@Stable
public class IdentityTransformation
extends java.lang.Object
implements ElementWiseTransformation, ElementWiseProxyTransform

Transform perfoming identity mapping.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface cz.o2.proxima.core.transform.ElementWiseProxyTransform

ElementWiseProxyTransform.ProxySetupContext

Nested classes/interfaces inherited from interface cz.o2.proxima.core.transform.ElementWiseTransformation

ElementWiseTransformation.Collector<T>

Constructor Summary

Constructors

Constructor	Description
IdentityTransformation()

Method Summary

Modifier and Type	Method	Description
int	apply(StreamElement input, ElementWiseTransformation.Collector<StreamElement> collector)	Apply the transformation function.
java.lang.String	fromProxy(java.lang.String proxy)	Apply transformation to attribute name from proxy naming.
void	setup(Repository repo, java.util.Map<java.lang.String,java.lang.Object> cfg)	Setup this transform.
java.lang.String	toProxy(java.lang.String raw)	Apply transformation to attribute name to proxy naming.

Methods inherited from class java.lang.Object

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

Methods inherited from interface cz.o2.proxima.core.transform.DataOperatorAgnostic

isContextual, isDelegateOf

Methods inherited from interface cz.o2.proxima.core.transform.DataOperatorAware

as

Methods inherited from interface cz.o2.proxima.core.transform.ElementWiseProxyTransform

setup, setup

Methods inherited from interface cz.o2.proxima.core.transform.ProxyTransform

asContextual, asElementWise

Methods inherited from interface cz.o2.proxima.core.transform.Transformation

asContextualTransform, asElementWiseTransform

Constructor Detail

IdentityTransformation

public IdentityTransformation()

Method Detail

setup

public void setup(Repository repo,
                  java.util.Map<java.lang.String,java.lang.Object> cfg)

Description copied from interface: ElementWiseTransformation

Setup this transform.

Specified by:

setup in interface ElementWiseTransformation

Parameters:

repo - repository

cfg - configuration

apply

public int apply(StreamElement input,
                 ElementWiseTransformation.Collector<StreamElement> collector)

Description copied from interface: ElementWiseTransformation

Apply the transformation function.

Specified by:

apply in interface ElementWiseTransformation

Parameters:

input - the input stream element to transform

collector - collector for outputs

Returns:

how many invocations of collector to expect before the elements should be considered processed

fromProxy

public java.lang.String fromProxy(java.lang.String proxy)

Description copied from interface: ElementWiseProxyTransform

Apply transformation to attribute name from proxy naming.

Specified by:

fromProxy in interface ElementWiseProxyTransform

Parameters:

proxy - name of the attribute in proxy namespace

Returns:

the raw attribute

toProxy

public java.lang.String toProxy(java.lang.String raw)

Description copied from interface: ElementWiseProxyTransform

Apply transformation to attribute name to proxy naming.

Specified by:

toProxy in interface ElementWiseProxyTransform

Parameters:

raw - the raw attribute name

Returns:

the proxy attribute name