com.neurosys.etl.common.transformers

Class EntityToObjectArrayTransformer<ENTITY>

java.lang.Object

com.neurosys.etl.process.EventAwareProcess

com.neurosys.etl.common.transformers.AbstractEntityTransformer<ENTITY,Object,TUPLE>

com.neurosys.etl.common.transformers.AbstractEntityToTupleTransformer<ENTITY,Object[]>

com.neurosys.etl.common.transformers.EntityToObjectArrayTransformer<ENTITY>

Type Parameters:

ENTITY -

All Implemented Interfaces:

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

public class EntityToObjectArrayTransformer<ENTITY>
extends AbstractEntityToTupleTransformer<ENTITY,Object[]>

Convert an Entity to an Object Array
The size of the Array depends on the AbstractEntityTransformer.getColumnFieldMapping() + AbstractEntityTransformer.getNonAssiciatedMappers()
The tuple itself is available in the intermediateObjects Map as "tuple" and original entity as "entity"

Mapper field Name is expected to be column number, starting from 0

Author:

Arjun Dhar

See Also:

Serialized Form

Nested Class Summary

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

Process.Event, Process.EventPoint

Field Summary

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
EntityToObjectArrayTransformer()

Method Summary

Modifier and Type	Method and Description
protected Object[]	init(ENTITY entity, Map<String,Object> intermediateObjects) Create the core Entity and also initialize intermediateObjects (nested objects) with core entities
protected void	setEntity(Object[] tuple, Mapper mapper, Object value) Reverse of SetEntity actually, setting the value to a given position in the Tuple for Mapper.getFieldName() != null (I.e concrete Output fields)

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

getColumnNames, identifyNode, transform

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

consumeIntermediateObjects, getColumnFieldMapping, getEntityAccessTransformer, getMode, getModesSupported, getNestedObjectInitMap, getNonAssiciatedMappers, getNonAssociatedMappers, getValue, init, isIdempotent, nestedInit, processValue, setColumnFieldMapping, 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

Constructor Detail

EntityToObjectArrayTransformer

public EntityToObjectArrayTransformer()

Method Detail

init

protected Object[] init(ENTITY entity,
                        Map<String,Object> intermediateObjects)

Description copied from class: AbstractEntityToTupleTransformer

Create the core Entity and also initialize intermediateObjects (nested objects) with core entities

Specified by:

init in class AbstractEntityToTupleTransformer<ENTITY,Object[]>

intermediateObjects - the Map into which we can pre-initialize stuff

Returns:

entity object

setEntity

protected void setEntity(Object[] tuple,
                         Mapper mapper,
                         Object value)
                  throws Exception

Description copied from class: AbstractEntityToTupleTransformer

Reverse of SetEntity actually, setting the value to a given position in the Tuple for Mapper.getFieldName() != null (I.e concrete Output fields)

Specified by:

setEntity in class AbstractEntityToTupleTransformer<ENTITY,Object[]>

mapper - as Mapper for MapperBehaviors and Mapper.getFieldName()

Throws:

Exception - TODO: Add unit test case, for an Entity with Integer field type but passing Double field value