com.neurosys.etl.common.transformers

Class AbstractObjectToEntityTransformer<NODE,ENTITY>

java.lang.Object

com.neurosys.etl.process.EventAwareProcess

com.neurosys.etl.common.transformers.AbstractEntityTransformer<NODE,String,ENTITY>

com.neurosys.etl.common.transformers.AbstractObjectToEntityTransformer<NODE,ENTITY>

All Implemented Interfaces:

IdempotentAware, ModeAware, Process, Serializable, org.apache.commons.collections.Transformer

Direct Known Subclasses:

EntitySelfTransformer

public abstract class AbstractObjectToEntityTransformer<NODE,ENTITY>
extends AbstractEntityTransformer<NODE,String,ENTITY>

Converts a Row/Tuple/Node to an Entity
This Process is EventAwareProcess.
If the Calling API supports Transactions, it is recommended that one override the transform(Object) method and make Transaction aware.

Author:

Arjun Dhar

See Also:

transform(Object), Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface com.neurosys.etl.process.Process

Process.Event, Process.EventPoint

Field Summary

Fields

Modifier and Type	Field and Description
protected int	currentNodeIndex

Fields inherited from class com.neurosys.etl.common.transformers.AbstractEntityTransformer

columnFieldMapping, idempotent, mode, modesSupported, nestedObjectInitMap, nonAssociatedMappers

Fields inherited from class com.neurosys.etl.process.EventAwareProcess

listeners, processState

Constructor Summary

Constructors

Constructor and Description
AbstractObjectToEntityTransformer()
AbstractObjectToEntityTransformer(AbstractObjectToEntityTransformer t)

Method Summary

Modifier and Type	Method and Description
protected String	identifyNode(String nodeFieldName) Allow identification of Node, so that the name can be passed in Exceptions etc.
Object	transform(Object input) Work Horse method that does all the conversion using Mappers.

Methods inherited from class com.neurosys.etl.common.transformers.AbstractEntityTransformer

consumeIntermediateObjects, getColumnFieldMapping, getEntityAccessTransformer, getMode, getModesSupported, getNestedObjectInitMap, getNonAssiciatedMappers, getNonAssociatedMappers, getValue, init, init, isIdempotent, nestedInit, processValue, setColumnFieldMapping, setEntity, setEntityAccessTransformer, setIdempotent, setMode, setModesSupported, setNestedObjectInitMap, setNonAssociatedMappers

Methods inherited from class com.neurosys.etl.process.EventAwareProcess

addListener, getListeners, onChangeHandler, setListeners

Methods inherited from class java.lang.Object

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

Field Detail

currentNodeIndex

protected int currentNodeIndex

Constructor Detail

AbstractObjectToEntityTransformer

public AbstractObjectToEntityTransformer()

AbstractObjectToEntityTransformer

public AbstractObjectToEntityTransformer(AbstractObjectToEntityTransformer t)

Method Detail

identifyNode

protected String identifyNode(String nodeFieldName)

Allow identification of Node, so that the name can be passed in Exceptions etc.
By default returns the local index number maintained by the transformer; override if one can uniquely identify the node.

Specified by:

identifyNode in class AbstractEntityTransformer<NODE,String,ENTITY>

Parameters:

nodeFieldName - as String

Returns:

String

transform

public Object transform(Object input)

Work Horse method that does all the conversion using Mappers.
Mapping involved One-to-One mapping or mapping Hypothetical variables in the source to real ones in persistence.