| package org.eclipse.viatra.query.application.queries.util; |
| |
| import com.google.common.collect.Sets; |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.Set; |
| import org.eclipse.emf.ecore.EClass; |
| import org.eclipse.emf.ecore.EDataType; |
| import org.eclipse.viatra.query.application.queries.EClassNamesMatch; |
| import org.eclipse.viatra.query.application.queries.EClassNamesMatcher; |
| import org.eclipse.viatra.query.runtime.api.ViatraQueryEngine; |
| import org.eclipse.viatra.query.runtime.api.impl.BaseGeneratedEMFPQuery; |
| import org.eclipse.viatra.query.runtime.api.impl.BaseGeneratedEMFQuerySpecification; |
| import org.eclipse.viatra.query.runtime.emf.types.EClassTransitiveInstancesKey; |
| import org.eclipse.viatra.query.runtime.emf.types.EDataTypeInSlotsKey; |
| import org.eclipse.viatra.query.runtime.emf.types.EStructuralFeatureInstancesKey; |
| import org.eclipse.viatra.query.runtime.exception.ViatraQueryException; |
| import org.eclipse.viatra.query.runtime.matchers.psystem.PBody; |
| import org.eclipse.viatra.query.runtime.matchers.psystem.PVariable; |
| import org.eclipse.viatra.query.runtime.matchers.psystem.basicdeferred.Equality; |
| import org.eclipse.viatra.query.runtime.matchers.psystem.basicdeferred.ExportedParameter; |
| import org.eclipse.viatra.query.runtime.matchers.psystem.basicenumerables.TypeConstraint; |
| import org.eclipse.viatra.query.runtime.matchers.psystem.queries.PParameter; |
| import org.eclipse.viatra.query.runtime.matchers.psystem.queries.QueryInitializationException; |
| import org.eclipse.viatra.query.runtime.matchers.tuple.FlatTuple; |
| |
| /** |
| * A pattern-specific query specification that can instantiate EClassNamesMatcher in a type-safe way. |
| * |
| * @see EClassNamesMatcher |
| * @see EClassNamesMatch |
| * |
| */ |
| @SuppressWarnings("all") |
| public final class EClassNamesQuerySpecification extends BaseGeneratedEMFQuerySpecification<EClassNamesMatcher> { |
| private EClassNamesQuerySpecification() { |
| super(GeneratedPQuery.INSTANCE); |
| } |
| |
| /** |
| * @return the singleton instance of the query specification |
| * @throws ViatraQueryException if the pattern definition could not be loaded |
| * |
| */ |
| public static EClassNamesQuerySpecification instance() throws ViatraQueryException { |
| try{ |
| return LazyHolder.INSTANCE; |
| } catch (ExceptionInInitializerError err) { |
| throw processInitializerError(err); |
| } |
| } |
| |
| @Override |
| protected EClassNamesMatcher instantiate(final ViatraQueryEngine engine) throws ViatraQueryException { |
| return EClassNamesMatcher.on(engine); |
| } |
| |
| @Override |
| public EClassNamesMatch newEmptyMatch() { |
| return EClassNamesMatch.newEmptyMatch(); |
| } |
| |
| @Override |
| public EClassNamesMatch newMatch(final Object... parameters) { |
| return EClassNamesMatch.newMatch((org.eclipse.emf.ecore.EClass) parameters[0], (java.lang.String) parameters[1]); |
| } |
| |
| /** |
| * Inner class allowing the singleton instance of {@link EClassNamesQuerySpecification} to be created |
| * <b>not</b> at the class load time of the outer class, |
| * but rather at the first call to {@link EClassNamesQuerySpecification#instance()}. |
| * |
| * <p> This workaround is required e.g. to support recursion. |
| * |
| */ |
| private static class LazyHolder { |
| private final static EClassNamesQuerySpecification INSTANCE = new EClassNamesQuerySpecification(); |
| |
| /** |
| * Statically initializes the query specification <b>after</b> the field {@link #INSTANCE} is assigned. |
| * This initialization order is required to support indirect recursion. |
| * |
| * <p> The static initializer is defined using a helper field to work around limitations of the code generator. |
| * |
| */ |
| private final static Object STATIC_INITIALIZER = ensureInitialized(); |
| |
| public static Object ensureInitialized() { |
| INSTANCE.ensureInitializedInternalSneaky(); |
| return null; |
| } |
| } |
| |
| private static class GeneratedPQuery extends BaseGeneratedEMFPQuery { |
| private final static EClassNamesQuerySpecification.GeneratedPQuery INSTANCE = new GeneratedPQuery(); |
| |
| @Override |
| public String getFullyQualifiedName() { |
| return "org.eclipse.viatra.query.application.queries.eClassNames"; |
| } |
| |
| @Override |
| public List<String> getParameterNames() { |
| return Arrays.asList("c","n"); |
| } |
| |
| @Override |
| public List<PParameter> getParameters() { |
| return Arrays.asList(new PParameter("c", "org.eclipse.emf.ecore.EClass"),new PParameter("n", "java.lang.String")); |
| } |
| |
| @Override |
| public Set<PBody> doGetContainedBodies() throws QueryInitializationException { |
| Set<PBody> bodies = Sets.newLinkedHashSet(); |
| try { |
| { |
| PBody body = new PBody(this); |
| PVariable var_c = body.getOrCreateVariableByName("c"); |
| PVariable var_n = body.getOrCreateVariableByName("n"); |
| new TypeConstraint(body, new FlatTuple(var_c), new EClassTransitiveInstancesKey((EClass)getClassifierLiteral("http://www.eclipse.org/emf/2002/Ecore", "EClass"))); |
| new TypeConstraint(body, new FlatTuple(var_n), new EDataTypeInSlotsKey((EDataType)getClassifierLiteral("http://www.eclipse.org/emf/2002/Ecore", "EString"))); |
| body.setSymbolicParameters(Arrays.<ExportedParameter>asList( |
| new ExportedParameter(body, var_c, "c"), |
| new ExportedParameter(body, var_n, "n") |
| )); |
| // EClass.name(c,n) |
| new TypeConstraint(body, new FlatTuple(var_c), new EClassTransitiveInstancesKey((EClass)getClassifierLiteral("http://www.eclipse.org/emf/2002/Ecore", "EClass"))); |
| PVariable var__virtual_0_ = body.getOrCreateVariableByName(".virtual{0}"); |
| new TypeConstraint(body, new FlatTuple(var_c, var__virtual_0_), new EStructuralFeatureInstancesKey(getFeatureLiteral("http://www.eclipse.org/emf/2002/Ecore", "ENamedElement", "name"))); |
| new Equality(body, var__virtual_0_, var_n); |
| bodies.add(body); |
| } |
| // to silence compiler error |
| if (false) throw new ViatraQueryException("Never", "happens"); |
| } catch (ViatraQueryException ex) { |
| throw processDependencyException(ex); |
| } |
| return bodies; |
| } |
| } |
| } |