| package org.eclipse.viatra.query.runtime.runonce.tests.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.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.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.basicdeferred.PatternMatchCounter; |
| import org.eclipse.viatra.query.runtime.matchers.psystem.basicenumerables.ConstantValue; |
| 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; |
| import org.eclipse.viatra.query.runtime.runonce.tests.SingleAuthoredFirstBooksMatch; |
| import org.eclipse.viatra.query.runtime.runonce.tests.SingleAuthoredFirstBooksMatcher; |
| import org.eclipse.viatra.query.runtime.runonce.tests.util.BookAuthorsQuerySpecification; |
| |
| /** |
| * A pattern-specific query specification that can instantiate SingleAuthoredFirstBooksMatcher in a type-safe way. |
| * |
| * @see SingleAuthoredFirstBooksMatcher |
| * @see SingleAuthoredFirstBooksMatch |
| * |
| */ |
| @SuppressWarnings("all") |
| public final class SingleAuthoredFirstBooksQuerySpecification extends BaseGeneratedEMFQuerySpecification<SingleAuthoredFirstBooksMatcher> { |
| private SingleAuthoredFirstBooksQuerySpecification() { |
| super(GeneratedPQuery.INSTANCE); |
| } |
| |
| /** |
| * @return the singleton instance of the query specification |
| * @throws ViatraQueryException if the pattern definition could not be loaded |
| * |
| */ |
| public static SingleAuthoredFirstBooksQuerySpecification instance() throws ViatraQueryException { |
| try{ |
| return LazyHolder.INSTANCE; |
| } catch (ExceptionInInitializerError err) { |
| throw processInitializerError(err); |
| } |
| } |
| |
| @Override |
| protected SingleAuthoredFirstBooksMatcher instantiate(final ViatraQueryEngine engine) throws ViatraQueryException { |
| return SingleAuthoredFirstBooksMatcher.on(engine); |
| } |
| |
| @Override |
| public SingleAuthoredFirstBooksMatch newEmptyMatch() { |
| return SingleAuthoredFirstBooksMatch.newEmptyMatch(); |
| } |
| |
| @Override |
| public SingleAuthoredFirstBooksMatch newMatch(final Object... parameters) { |
| return SingleAuthoredFirstBooksMatch.newMatch((org.eclipse.viatra.examples.library.Library) parameters[0], (org.eclipse.viatra.examples.library.Book) parameters[1]); |
| } |
| |
| /** |
| * Inner class allowing the singleton instance of {@link SingleAuthoredFirstBooksQuerySpecification} to be created |
| * <b>not</b> at the class load time of the outer class, |
| * but rather at the first call to {@link SingleAuthoredFirstBooksQuerySpecification#instance()}. |
| * |
| * <p> This workaround is required e.g. to support recursion. |
| * |
| */ |
| private static class LazyHolder { |
| private final static SingleAuthoredFirstBooksQuerySpecification INSTANCE = new SingleAuthoredFirstBooksQuerySpecification(); |
| |
| /** |
| * 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 SingleAuthoredFirstBooksQuerySpecification.GeneratedPQuery INSTANCE = new GeneratedPQuery(); |
| |
| @Override |
| public String getFullyQualifiedName() { |
| return "org.eclipse.viatra.query.runtime.runonce.tests.singleAuthoredFirstBooks"; |
| } |
| |
| @Override |
| public List<String> getParameterNames() { |
| return Arrays.asList("library","firstBook"); |
| } |
| |
| @Override |
| public List<PParameter> getParameters() { |
| return Arrays.asList( |
| new PParameter("library", "org.eclipse.viatra.examples.library.Library", new EClassTransitiveInstancesKey((EClass)getClassifierLiteralSafe("http://www.eclipse.org/viatra/examples/library/1.0", "Library"))), |
| new PParameter("firstBook", "org.eclipse.viatra.examples.library.Book", new EClassTransitiveInstancesKey((EClass)getClassifierLiteralSafe("http://www.eclipse.org/viatra/examples/library/1.0", "Book"))) |
| ); |
| } |
| |
| @Override |
| public Set<PBody> doGetContainedBodies() throws QueryInitializationException { |
| Set<PBody> bodies = Sets.newLinkedHashSet(); |
| try { |
| { |
| PBody body = new PBody(this); |
| PVariable var_library = body.getOrCreateVariableByName("library"); |
| PVariable var_firstBook = body.getOrCreateVariableByName("firstBook"); |
| PVariable var__author = body.getOrCreateVariableByName("_author"); |
| new TypeConstraint(body, new FlatTuple(var_library), new EClassTransitiveInstancesKey((EClass)getClassifierLiteral("http://www.eclipse.org/viatra/examples/library/1.0", "Library"))); |
| new TypeConstraint(body, new FlatTuple(var_firstBook), new EClassTransitiveInstancesKey((EClass)getClassifierLiteral("http://www.eclipse.org/viatra/examples/library/1.0", "Book"))); |
| body.setSymbolicParameters(Arrays.<ExportedParameter>asList( |
| new ExportedParameter(body, var_library, "library"), |
| new ExportedParameter(body, var_firstBook, "firstBook") |
| )); |
| // Library.writers.firstBook(library, firstBook) |
| new TypeConstraint(body, new FlatTuple(var_library), new EClassTransitiveInstancesKey((EClass)getClassifierLiteral("http://www.eclipse.org/viatra/examples/library/1.0", "Library"))); |
| PVariable var__virtual_0_ = body.getOrCreateVariableByName(".virtual{0}"); |
| new TypeConstraint(body, new FlatTuple(var_library, var__virtual_0_), new EStructuralFeatureInstancesKey(getFeatureLiteral("http://www.eclipse.org/viatra/examples/library/1.0", "Library", "writers"))); |
| PVariable var__virtual_1_ = body.getOrCreateVariableByName(".virtual{1}"); |
| new TypeConstraint(body, new FlatTuple(var__virtual_0_, var__virtual_1_), new EStructuralFeatureInstancesKey(getFeatureLiteral("http://www.eclipse.org/viatra/examples/library/1.0", "Writer", "firstBook"))); |
| new Equality(body, var__virtual_1_, var_firstBook); |
| // 1 == count find bookAuthors(firstBook, _author) |
| PVariable var__virtual_2_ = body.getOrCreateVariableByName(".virtual{2}"); |
| new ConstantValue(body, var__virtual_2_, 1); |
| PVariable var__virtual_3_ = body.getOrCreateVariableByName(".virtual{3}"); |
| new PatternMatchCounter(body, new FlatTuple(var_firstBook, var__author), BookAuthorsQuerySpecification.instance().getInternalQueryRepresentation(), var__virtual_3_); |
| new Equality(body, var__virtual_2_, var__virtual_3_); |
| bodies.add(body); |
| } |
| // to silence compiler error |
| if (false) throw new ViatraQueryException("Never", "happens"); |
| } catch (ViatraQueryException ex) { |
| throw processDependencyException(ex); |
| } |
| return bodies; |
| } |
| } |
| } |