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/*******************************************************************************
* Copyright (c) 2010-2017, Zoltan Ujhelyi, IncQuery Labs Ltd.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-v20.html.
*
* SPDX-License-Identifier: EPL-2.0
*******************************************************************************/
package tools.refinery.viatra.runtime.localsearch.planner.compiler;
import java.util.Map;
import org.eclipse.emf.ecore.EReference;
import org.eclipse.emf.ecore.EStructuralFeature;
import tools.refinery.viatra.runtime.emf.EMFQueryRuntimeContext;
import tools.refinery.viatra.runtime.emf.types.EClassTransitiveInstancesKey;
import tools.refinery.viatra.runtime.emf.types.EClassUnscopedTransitiveInstancesKey;
import tools.refinery.viatra.runtime.emf.types.EDataTypeInSlotsKey;
import tools.refinery.viatra.runtime.emf.types.EStructuralFeatureInstancesKey;
import tools.refinery.viatra.runtime.localsearch.operations.check.InstanceOfClassCheck;
import tools.refinery.viatra.runtime.localsearch.operations.check.InstanceOfDataTypeCheck;
import tools.refinery.viatra.runtime.localsearch.operations.check.InstanceOfJavaClassCheck;
import tools.refinery.viatra.runtime.localsearch.operations.check.StructuralFeatureCheck;
import tools.refinery.viatra.runtime.localsearch.operations.check.nobase.ScopeCheck;
import tools.refinery.viatra.runtime.localsearch.operations.extend.ExtendToEStructuralFeatureSource;
import tools.refinery.viatra.runtime.localsearch.operations.extend.ExtendToEStructuralFeatureTarget;
import tools.refinery.viatra.runtime.localsearch.operations.extend.IterateOverContainers;
import tools.refinery.viatra.runtime.localsearch.operations.extend.IterateOverEClassInstances;
import tools.refinery.viatra.runtime.localsearch.operations.extend.IterateOverEDatatypeInstances;
import tools.refinery.viatra.runtime.matchers.context.IInputKey;
import tools.refinery.viatra.runtime.matchers.context.IQueryRuntimeContext;
import tools.refinery.viatra.runtime.matchers.context.common.JavaTransitiveInstancesKey;
import tools.refinery.viatra.runtime.matchers.planning.QueryProcessingException;
import tools.refinery.viatra.runtime.matchers.psystem.PVariable;
import tools.refinery.viatra.runtime.matchers.psystem.basicdeferred.TypeFilterConstraint;
import tools.refinery.viatra.runtime.matchers.psystem.basicenumerables.TypeConstraint;
import tools.refinery.viatra.runtime.matchers.tuple.TupleMask;
/**
* Operation compiler implementation that uses EMF-specific operations.
*
* @author Zoltan Ujhelyi
* @since 1.7
*
*/
public class EMFOperationCompiler extends AbstractOperationCompiler {
private boolean baseIndexAvailable;
private final EMFQueryRuntimeContext runtimeContext;
public EMFOperationCompiler(IQueryRuntimeContext runtimeContext) {
this(runtimeContext, false);
}
public EMFOperationCompiler(IQueryRuntimeContext runtimeContext, boolean baseIndexAvailable) {
super(runtimeContext);
this.runtimeContext = (EMFQueryRuntimeContext) runtimeContext;
this.baseIndexAvailable = baseIndexAvailable;
}
@Override
protected void createCheck(TypeFilterConstraint typeConstraint, Map<PVariable, Integer> variableMapping) {
final IInputKey inputKey = typeConstraint.getInputKey();
if (inputKey instanceof JavaTransitiveInstancesKey) {
doCreateInstanceofJavaTypeCheck((JavaTransitiveInstancesKey) inputKey, variableMapping.get(typeConstraint.getVariablesTuple().get(0)));
} else if (inputKey instanceof EDataTypeInSlotsKey) { // TODO probably only occurs as TypeConstraint
doCreateInstanceofDatatypeCheck((EDataTypeInSlotsKey) inputKey, variableMapping.get(typeConstraint.getVariablesTuple().get(0)));
} else if (inputKey instanceof EClassUnscopedTransitiveInstancesKey) {
doCreateInstanceofUnscopedClassCheck((EClassUnscopedTransitiveInstancesKey) inputKey, variableMapping.get(typeConstraint.getVariablesTuple().get(0)));
} else {
String msg = UNSUPPORTED_TYPE_MESSAGE + inputKey;
throw new QueryProcessingException(msg, null, msg, null);
}
}
@Override
protected void createCheck(TypeConstraint typeConstraint, Map<PVariable, Integer> variableMapping) {
final IInputKey inputKey = typeConstraint.getSupplierKey();
if (inputKey instanceof EClassTransitiveInstancesKey) {
doCreateInstanceofClassCheck((EClassTransitiveInstancesKey)inputKey, variableMapping.get(typeConstraint.getVariablesTuple().get(0)));
} else if (inputKey instanceof EStructuralFeatureInstancesKey) {
int sourcePosition = variableMapping.get(typeConstraint.getVariablesTuple().get(0));
int targetPosition = variableMapping.get(typeConstraint.getVariablesTuple().get(1));
operations.add(new StructuralFeatureCheck(sourcePosition, targetPosition,
((EStructuralFeatureInstancesKey) inputKey).getEmfKey()));
} else if (inputKey instanceof EDataTypeInSlotsKey) {
doCreateInstanceofDatatypeCheck((EDataTypeInSlotsKey) inputKey, variableMapping.get(typeConstraint.getVariablesTuple().get(0)));
} else {
String msg = UNSUPPORTED_TYPE_MESSAGE + inputKey;
throw new QueryProcessingException(msg, null, msg, null);
}
}
@Override
protected void createUnaryTypeCheck(IInputKey inputKey, int position) {
if (inputKey instanceof EClassTransitiveInstancesKey) {
doCreateInstanceofClassCheck((EClassTransitiveInstancesKey)inputKey, position);
} else if (inputKey instanceof EClassUnscopedTransitiveInstancesKey) {
doCreateInstanceofUnscopedClassCheck((EClassUnscopedTransitiveInstancesKey)inputKey, position);
} else if (inputKey instanceof EDataTypeInSlotsKey) {
doCreateInstanceofDatatypeCheck((EDataTypeInSlotsKey) inputKey, position);
} else if (inputKey instanceof JavaTransitiveInstancesKey) {
doCreateInstanceofJavaTypeCheck((JavaTransitiveInstancesKey) inputKey, position);
} else {
String msg = UNSUPPORTED_TYPE_MESSAGE + inputKey;
throw new QueryProcessingException(msg, null, msg, null);
}
}
private void doCreateInstanceofClassCheck(EClassTransitiveInstancesKey inputKey, int position) {
operations.add(new InstanceOfClassCheck(position, inputKey.getEmfKey()));
operations.add(new ScopeCheck(position, runtimeContext.getEmfScope()));
}
private void doCreateInstanceofUnscopedClassCheck(EClassUnscopedTransitiveInstancesKey inputKey, int position) {
operations.add(new InstanceOfClassCheck(position, inputKey.getEmfKey()));
}
private void doCreateInstanceofDatatypeCheck(EDataTypeInSlotsKey inputKey, int position) {
operations.add(new InstanceOfDataTypeCheck(position, inputKey.getEmfKey()));
}
private void doCreateInstanceofJavaTypeCheck(JavaTransitiveInstancesKey inputKey, int position) {
operations.add(new InstanceOfJavaClassCheck(position, inputKey.getInstanceClass()));
}
@Override
public void createExtend(TypeConstraint typeConstraint, Map<PVariable, Integer> variableMapping) {
final IInputKey inputKey = typeConstraint.getSupplierKey();
if (inputKey instanceof EDataTypeInSlotsKey) {
if(baseIndexAvailable){
operations.add(new IterateOverEDatatypeInstances(variableMapping.get(typeConstraint.getVariableInTuple(0)), ((EDataTypeInSlotsKey) inputKey).getEmfKey()));
} else {
int position = variableMapping.get(typeConstraint.getVariableInTuple(0));
operations
.add(new tools.refinery.viatra.runtime.localsearch.operations.extend.nobase.IterateOverEDatatypeInstances(position,
((EDataTypeInSlotsKey) inputKey).getEmfKey(), runtimeContext.getEmfScope()));
operations.add(new ScopeCheck(position, runtimeContext.getEmfScope()));
}
} else if (inputKey instanceof EClassTransitiveInstancesKey) {
if(baseIndexAvailable){
operations.add(new IterateOverEClassInstances(variableMapping.get(typeConstraint.getVariableInTuple(0)),
((EClassTransitiveInstancesKey) inputKey).getEmfKey()));
} else {
int position = variableMapping.get(typeConstraint.getVariableInTuple(0));
operations
.add(new tools.refinery.viatra.runtime.localsearch.operations.extend.nobase.IterateOverEClassInstances(
position,
((EClassTransitiveInstancesKey) inputKey).getEmfKey(), runtimeContext.getEmfScope()));
operations.add(new ScopeCheck(position, runtimeContext.getEmfScope()));
}
} else if (inputKey instanceof EStructuralFeatureInstancesKey) {
final EStructuralFeature feature = ((EStructuralFeatureInstancesKey) inputKey).getEmfKey();
int sourcePosition = variableMapping.get(typeConstraint.getVariablesTuple().get(0));
int targetPosition = variableMapping.get(typeConstraint.getVariablesTuple().get(1));
boolean fromBound = variableBindings.get(typeConstraint).contains(sourcePosition);
boolean toBound = variableBindings.get(typeConstraint).contains(targetPosition);
if (fromBound && !toBound) {
operations.add(new ExtendToEStructuralFeatureTarget(sourcePosition, targetPosition, feature));
operations.add(new ScopeCheck(targetPosition, runtimeContext.getEmfScope()));
} else if(!fromBound && toBound){
if (feature instanceof EReference && ((EReference)feature).isContainment()) {
// The iterate is also used to traverse a single container (third parameter)
operations.add(new IterateOverContainers(sourcePosition, targetPosition, false));
operations.add(new ScopeCheck(sourcePosition, runtimeContext.getEmfScope()));
} else if(baseIndexAvailable){
TupleMask mask = TupleMask.fromSelectedIndices(variableMapping.size(), new int[] {targetPosition});
operations.add(new ExtendToEStructuralFeatureSource(sourcePosition, targetPosition, feature, mask));
} else {
operations.add(new tools.refinery.viatra.runtime.localsearch.operations.extend.nobase.ExtendToEStructuralFeatureSource(
sourcePosition, targetPosition, feature));
operations.add(new ScopeCheck(sourcePosition, runtimeContext.getEmfScope()));
}
} else {
// TODO Elaborate solution based on the navigability of edges
// As of now a static solution is implemented
if (baseIndexAvailable) {
operations.add(new IterateOverEClassInstances(sourcePosition, feature.getEContainingClass()));
operations.add(new ExtendToEStructuralFeatureTarget(sourcePosition, targetPosition, feature));
} else {
operations
.add(new tools.refinery.viatra.runtime.localsearch.operations.extend.nobase.IterateOverEClassInstances(
sourcePosition, feature.getEContainingClass(), runtimeContext.getEmfScope()));
operations.add(new ScopeCheck(sourcePosition, runtimeContext.getEmfScope()));
operations.add(new ExtendToEStructuralFeatureTarget(sourcePosition, targetPosition, feature));
operations.add(new ScopeCheck(targetPosition, runtimeContext.getEmfScope()));
}
}
} else {
throw new IllegalArgumentException(UNSUPPORTED_TYPE_MESSAGE + inputKey);
}
}
}
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