/*
* JBoss, Home of Professional Open Source.
*
* See the LEGAL.txt file distributed with this work for information regarding copyright ownership and licensing.
*
* See the AUTHORS.txt file distributed with this work for a full listing of individual contributors.
*/
package org.teiid.designer.transformation.compare;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EReference;
import org.eclipse.emf.mapping.Mapping;
import org.eclipse.emf.mapping.MappingFactory;
import org.teiid.core.designer.HashCodeUtil;
import org.teiid.designer.core.ModelerCore;
import org.teiid.designer.core.compare.AbstractEObjectMatcher;
import org.teiid.designer.core.compare.TwoPhaseEObjectMatcher;
import org.teiid.designer.metamodels.transformation.SqlAlias;
/**
* @since 8.0
*/
public class SqlTransformationAliasesMatcher extends AbstractEObjectMatcher implements
TwoPhaseEObjectMatcher {
public SqlTransformationAliasesMatcher() {
super();
}
/**
* @see org.teiid.designer.core.compare.EObjectMatcher#addMappingsForRoots(java.util.List, java.util.List, org.eclipse.emf.mapping.Mapping, org.eclipse.emf.mapping.MappingFactory)
*/
@Override
public void addMappingsForRoots(final List inputs, final List outputs,
final Mapping mapping, final MappingFactory factory) {
}
/**
* @see org.teiid.designer.core.compare.EObjectMatcher#addMappings(org.eclipse.emf.ecore.EReference, java.util.List, java.util.List, org.eclipse.emf.mapping.Mapping, org.eclipse.emf.mapping.MappingFactory)
*/
@Override
public void addMappings( final EReference reference, final List inputs, final List outputs,
final Mapping mapping, final MappingFactory factory) {
}
/**
* @see org.teiid.designer.core.compare.TwoPhaseEObjectMatcher#addMappings(org.eclipse.emf.ecore.EReference, java.util.List, java.util.List, java.util.Map, org.eclipse.emf.mapping.Mapping, org.eclipse.emf.mapping.MappingFactory)
* @since 4.2
*/
@Override
public void addMappings(final EReference reference, final List inputs, final List outputs, final Map inputsToOutputs, final Mapping mapping, final MappingFactory factory) {
// Loop over the inputs and accumulate the select/insert/update/delete transforms ...
final Map sqlAliasesByAliasInfo = new HashMap();
for (final Iterator iter = inputs.iterator();iter.hasNext();) {
final EObject input = (EObject)iter.next();
if(input instanceof SqlAlias) {
final SqlAliasInfo inputInfo = new SqlAliasInfo((SqlAlias)input);
sqlAliasesByAliasInfo.put(inputInfo, input);
}
}
// Loop over the outputs and find matches for any of the above objects ...
for (final Iterator outputIter = outputs.iterator();outputIter.hasNext();) {
final EObject output = (EObject)outputIter.next();
if(output instanceof SqlAlias) {
final SqlAliasInfo outputInfo = new SqlAliasInfo((SqlAlias)output);
final SqlAlias inputAlias = (SqlAlias) sqlAliasesByAliasInfo.get(outputInfo);
if(inputAlias != null ) {
inputs.remove(inputAlias);
outputIter.remove();
addMapping(inputAlias,output,mapping,factory);
inputsToOutputs.put(inputAlias,output);
}
}
}
}
/**
* @see org.teiid.designer.core.compare.TwoPhaseEObjectMatcher#addMappingsForRoots(java.util.List, java.util.List, java.util.Map, org.eclipse.emf.mapping.Mapping, org.eclipse.emf.mapping.MappingFactory)
* @since 4.2
*/
@Override
public void addMappingsForRoots(final List inputs,
final List outputs,
final Map inputsToOutputs,
final Mapping mapping,
final MappingFactory factory) {
addMappings(null, inputs, outputs, inputsToOutputs, mapping, factory);
}
private class SqlAliasInfo {
private SqlAlias alias;
public SqlAliasInfo(SqlAlias alias) {
this.alias = alias;
}
@Override
public boolean equals(Object obj) {
if(obj == this) {
return true;
}
if(obj == null || obj.getClass() != this.getClass()) {
return false;
}
SqlAliasInfo aliasInfo = (SqlAliasInfo) obj;
if ( aliasEquals(this.getAlias(), aliasInfo.getAlias())) {
return true;
}
return false;
}
/**
* @return Returns the alias.
* @since 4.2
*/
public SqlAlias getAlias() {
return this.alias;
}
@Override
public int hashCode() {
int myHash = 0;
myHash = HashCodeUtil.hashCode(myHash, this.getAlias().getAlias());
return myHash;
}
private boolean aliasEquals(SqlAlias sqlAlias1, SqlAlias sqlAlias2) {
if(sqlAlias1 == sqlAlias2) {
return true;
}
if(!sqlAlias1.getAlias().equalsIgnoreCase(sqlAlias2.getAlias())) {
return false;
}
EObject aliasedObj1 = sqlAlias1.getAliasedObject();
EObject aliasedObj2 = sqlAlias2.getAliasedObject();
if(aliasedObj1 == aliasedObj2) {
return true;
}
if(!aliasedObj1.eClass().equals(aliasedObj2.eClass())) {
return false;
}
if(ModelerCore.getModelEditor().equals(aliasedObj1, aliasedObj2)) {
return true;
}
return true;
}
}
}