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/*
* anaptecs GmbH, Ricarda-Huch-Str. 71, 72760 Reutlingen, Germany
*
* Copyright 2004 - 2019. All rights reserved.
*/
package com.anaptecs.jeaf.junit.objectmapping.mapper;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import com.anaptecs.jeaf.core.api.ObjectMapper;
import com.anaptecs.jeaf.junit.objectmapping.MappingChild;
import com.anaptecs.jeaf.junit.objectmapping.MappingChildDO;
import com.anaptecs.jeaf.xfun.api.checks.Assert;
import com.anaptecs.jeaf.xfun.api.checks.Check;
/**
* Class implements an bidirectional object mapper between classes {@link MappingChild} as source and
* {@link MappingChildDO} as target.
*/
public class MappingChildToMappingChildDOConverter implements ObjectMapper {
/**
* Only instance of this class. We can avoid to create multiple instances as object mapper implementations are
* stateless and thread safe.
*/
private static final MappingChildToMappingChildDOConverter INSTANCE = new MappingChildToMappingChildDOConverter();
/**
* Constructor is private. In order to avoid that unnecessary instances are created.
*/
private MappingChildToMappingChildDOConverter( ) {
}
/**
* Method returns an instance of this object mapper.
*
* @return {@link ObjectMapper} Instance an object mapper that is capable to map between MappingChild and
* MappingChildDO. The method never returns null.
*/
public static MappingChildToMappingChildDOConverter getConverter( ) {
return INSTANCE;
}
/**
* Method creates a new MappingChildDO object from the passed MappingChild object and applies the defined mappings of
* type {@link MappingType#CREATE} from the UML model.
*
* @param pSource MappingChild object that should be used to create a new MappingChildDO object. The parameter must
* not be null.
* @return {@link MappingChildDO} Created MappingChildDO object. The method never returns null.
*/
public static MappingChildDO createNewTargetObject( MappingChild pSource ) {
// Check parameter
Check.checkInvalidParameterNull(pSource, "pSource");
// Create new target object.
MappingChildDO lTarget = new MappingChildDO();
MappingChildToMappingChildDOConverter lObjectMapper = MappingChildToMappingChildDOConverter.getConverter();
// As class MappingChild also has a super class we have to retrieve a mapper for its super class as well. The
// delegate is responsible for applying all mappings of the super classes.
lObjectMapper.applyParentMappings(pSource, lTarget, MappingType.CREATE);
// Take value(s) from source, map them to target and return the created target object.
lObjectMapper.applyMappings(pSource, lTarget, MappingType.CREATE);
return lTarget;
}
/**
* Method creates new MappingChildDO objects based on the passed MappingChild objects. For every MappingChild object a
* new MappingChildDO object will be returned. The mappings for case {@link MappingType#CREATE} will be applied.
*
* @param pSourceObjects All MappingChild objects that should be used to create MappingChildDO objects. The parameter
* must not be null.
* @return {@link List} List with all MappingChildDO objects that were created. The method never returns null.
*/
public static List createNewTargetObjects( Collection pSourceObjects ) {
// Check parameter
Check.checkInvalidParameterNull(pSourceObjects, "pSourceObjects");
// Create new target object for every passed source object
List lTargetObjects = new ArrayList(pSourceObjects.size());
for (MappingChild lNext : pSourceObjects) {
MappingChildDO lNewTargetObject = MappingChildToMappingChildDOConverter.createNewTargetObject(lNext);
lTargetObjects.add(lNewTargetObject);
}
// Return all created target objects.
return lTargetObjects;
}
/**
* Method applies the mappings according to the passed mapping type on the passed source and target object.
*
* @param pSource Source object which should be used. The parameter must not be null. The effective type and direction
* of the object mapping depends on parameter pMappingType.
* @param pTarget Target object which should be used. The parameter must not be null. The effective type and direction
* of the object mapping depends on parameter pMappingType.
* @param pMappingType Parameter defines which type of mapping should be applied.
*/
@Override
public void applyMappings( MappingChild pSource, MappingChildDO pTarget, ObjectMapper.MappingType pMappingType ) {
// Check parameters
Check.checkInvalidParameterNull(pSource, "pSource");
Check.checkInvalidParameterNull(pTarget, "pTarget");
// Apply mapping of super classes.
this.applyParentMappings(pSource, pTarget, pMappingType);
// Select the type of mapping that should be executed.
switch (pMappingType) {
// Mappings for creation of target object.
case CREATE:
this.setTargetObject(pSource, pTarget);
break;
// Mapping for update of target object
case UPDATE:
this.updateTargetObject(pSource, pTarget);
break;
// Mapping for reading from target object.
case READ:
this.setSourceObject(pSource, pTarget);
break;
// Invalid mapping type. Most likely this is because of an outdated version of JEAF Generator that does not match
// to the used version of JEAF Core.
default:
Assert.internalError("Unexpected object mapping type '" + pMappingType.name()
+ ". Please regenerate code with the latest version of JEAF Generator.");
}
}
/**
* Method applies the mappings according to the passed mapping type on the passed source and target objects. The
* entries in the list of source and target objects are matched according to their index. This also means that both
* list must have the same amount of entries.
*
* @param pSources Source objects which should be used. The parameter must not be null. The effective type and
* direction of the object mapping depends on parameter pMappingType.
* @param pTargets Target objects which should be used. The parameter must not be null. The effective type and
* direction of the object mapping depends on parameter pMappingType.
* @param pMappingType Parameter defines which type of mapping should be applied.
*/
@Override
public void applyMappings( List pSources, List pTargets,
ObjectMapper.MappingType pMappingType ) {
// Check parameters
Check.checkInvalidParameterNull(pSources, "pSources");
Check.checkInvalidParameterNull(pTargets, "pTargets");
// Resolve iterators for sources and targets.
Iterator lSourceIterator = pSources.iterator();
Iterator lTargetIterator = pTargets.iterator();
// Apply mappings for each pair of source and target.
while (lSourceIterator.hasNext()) {
this.applyMappings(lSourceIterator.next(), lTargetIterator.next(), pMappingType);
}
}
/**
* Method creates a new MappingChild object and applies the defined mappings of type {@link MappingType#READ} from the
* UML model.
*
* @param pTarget MappingChildDO object that should be used to create a new MappingChild object. The parameter must
* not be null.
* @return {@link MappingChild} Created MappingChild object. The method never returns null.
*/
public static MappingChild createNewSourceObject( MappingChildDO pTarget ) {
// Check parameter
Check.checkInvalidParameterNull(pTarget, "pTarget");
// Create new source object, apply mappings and return created object.
MappingChild lNewSourceObject = MappingChild.builder().build();
MappingChildToMappingChildDOConverter lObjectMapper = MappingChildToMappingChildDOConverter.getConverter();
lObjectMapper.applyMappings(lNewSourceObject, pTarget, MappingType.READ);
return lNewSourceObject;
}
/**
* Method creates new MappingChild objects based on the passed MappingChildDO objects. For every MappingChildDO object
* a new MappingChild object will be returned. The mappings for case {@link MappingType#READ} will be applied.
*
* @param pTargetObjects All target objects that should be used to create source objects. The parameter must not be
* null.
* @return {@link List} List with all source objects that were created. The method never returns null.
*/
public static List createNewSourceObjects( Collection pTargetObjects ) {
// Check parameter
Check.checkInvalidParameterNull(pTargetObjects, "pTargetObjects");
// Create new source object for every passed target object.
List lNewObjects = new ArrayList(pTargetObjects.size());
for (MappingChildDO lNext : pTargetObjects) {
MappingChild lNewSourceObject = MappingChildToMappingChildDOConverter.createNewSourceObject(lNext);
lNewObjects.add(lNewSourceObject);
}
return lNewObjects;
}
/**
* Method maps all attributes from MappingChild to MappingChildDO. Mappings are applied only for case
* {@link MappingType#READ}.
*
* @param pSource Source object for the mapping. The parameter must not be null.
* @param pTarget Target object for the mapping. The parameter must not be null.
*/
private void setTargetObject( MappingChild pSource, MappingChildDO pTarget ) {
pTarget.setValue(pSource.getValue());
}
/**
* Method maps all attributes from MappingChild to MappingChildDO. Mappings are applied only for case
* {@link MappingType#UPDATE}.
*
* @param pSource Source object for the mapping. The parameter must not be null.
* @param pTarget Target object for the mapping. The parameter must not be null.
*/
private void updateTargetObject( MappingChild pSource, MappingChildDO pTarget ) {
// Update target object
pTarget.setValue(pSource.getValue());
}
/**
* Method maps all attributes from MappingChildDO to MappingChild. Mappings are applied only for case
* {@link MappingType#READ}.
*
* @param pSource Source object for the mapping. The parameter must not be null.
* @param pTarget Target object for the mapping. The parameter must not be null.
*/
private void setSourceObject( MappingChild pSource, MappingChildDO pTarget ) {
pSource.setValue(pTarget.getValue());
}
/**
* Method applies the object mappings for all combinations of the source's parent class with the target class and all
* of its super classes.
*
* @param pSource Source object for the mapping. The parameter must not be null.
* @param pTarget Target object for the mapping. The parameter must not be null.
* @param pMappingType Parameter defines which type of mapping should be applied.
*/
private void applyParentMappings( MappingChild pSource, MappingChildDO pTarget,
ObjectMapper.MappingType pMappingType ) {
MappingParentToMappingParentDOConverter.getConverter().applyMappings(pSource, pTarget, pMappingType);
}
}
