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/*******************************************************************************
* Copyright (c) 2010-2015, Zoltan Ujhelyi, Istvan Rath and Daniel Varro
* 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.matchers.psystem.rewriters;
import java.util.LinkedHashSet;
import java.util.Set;
import tools.refinery.viatra.runtime.matchers.context.IInputKey;
import tools.refinery.viatra.runtime.matchers.context.surrogate.SurrogateQueryRegistry;
import tools.refinery.viatra.runtime.matchers.psystem.PBody;
import tools.refinery.viatra.runtime.matchers.psystem.PVariable;
import tools.refinery.viatra.runtime.matchers.psystem.basicenumerables.PositivePatternCall;
import tools.refinery.viatra.runtime.matchers.psystem.basicenumerables.TypeConstraint;
import tools.refinery.viatra.runtime.matchers.psystem.queries.PDisjunction;
import tools.refinery.viatra.runtime.matchers.psystem.queries.PQuery;
import tools.refinery.viatra.runtime.matchers.psystem.queries.PQuery.PQueryStatus;
import tools.refinery.viatra.runtime.matchers.tuple.Tuple;
import tools.refinery.viatra.runtime.matchers.tuple.Tuples;
/**
* @author Zoltan Ujhelyi
*
*/
public class SurrogateQueryRewriter extends PDisjunctionRewriter {
@Override
public PDisjunction rewrite(PDisjunction disjunction) {
Set<PBody> replacedBodies = new LinkedHashSet<>();
for (PBody body : disjunction.getBodies()) {
PBodyCopier copier = new PBodyCopier(body, getTraceCollector()) {
@Override
protected void copyTypeConstraint(TypeConstraint typeConstraint) {
PVariable[] mappedVariables = extractMappedVariables(typeConstraint);
Tuple variablesTuple = Tuples.flatTupleOf((Object[])mappedVariables);
final IInputKey supplierKey = typeConstraint.getSupplierKey();
if(SurrogateQueryRegistry.instance().hasSurrogateQueryFQN(supplierKey)) {
PQuery surrogateQuery = SurrogateQueryRegistry.instance().getSurrogateQuery(supplierKey);
if (surrogateQuery == null) {
throw new IllegalStateException(
String.format("Surrogate query for feature %s not found",
supplierKey.getPrettyPrintableName()));
}
addTrace(typeConstraint, new PositivePatternCall(getCopiedBody(), variablesTuple, surrogateQuery));
} else {
addTrace(typeConstraint, new TypeConstraint(getCopiedBody(), variablesTuple, supplierKey));
}
}
};
PBody modifiedBody = copier.getCopiedBody();
replacedBodies.add(modifiedBody);
modifiedBody.setStatus(PQueryStatus.OK);
}
return new PDisjunction(replacedBodies);
}
}
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