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/**
* Copyright (c) 2011 Mia-Software.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Nicolas Guyomar (Mia-Software) - Bug 334615 - Java Query for EMF Facet
* Emmanuelle Rouillé (Mia-Software) - Bug 352618 - To be able to use non derived facet structural features and save them values.
* Nicolas Bros (Mia-Software) - Bug 361612 - New core for new version of the Facet metamodel
* Nicolas Bros (Mia-Software) - Bug 362191 - [Restructuring] Query mechanism for eFacet2
* Nicolas Bros (Mia-Software) - Bug 376941 - [EFacet] Facet operation arguments in Facet model
*/
package org.eclipse.papyrus.emf.facet.query.java.core.internal.evaluator;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.papyrus.emf.facet.efacet.core.IDerivedTypedElementManager;
import org.eclipse.papyrus.emf.facet.efacet.core.exception.DerivedTypedElementException;
import org.eclipse.papyrus.emf.facet.efacet.core.internal.query.QueryUtils;
import org.eclipse.papyrus.emf.facet.efacet.core.query.IQueryImplementation;
import org.eclipse.papyrus.emf.facet.efacet.core.query.IQueryImplementationFactory;
import org.eclipse.papyrus.emf.facet.efacet.metamodel.v0_2_0.efacet.extensible.Query;
import org.eclipse.papyrus.emf.facet.query.java.core.IJavaQuery2;
import org.eclipse.papyrus.emf.facet.query.java.core.internal.plugin.Activator;
import org.eclipse.papyrus.emf.facet.query.java.metamodel.v0_2_0.javaquery.JavaQuery;
import org.eclipse.papyrus.emf.facet.query.java.metamodel.v0_2_0.javaquery.JavaQueryPackage;
import org.eclipse.papyrus.emf.facet.util.core.Logger;
import org.osgi.framework.Bundle;
public class JavaQueryImplementationFactory implements IQueryImplementationFactory {
public IQueryImplementation create(final Query query, final Bundle bundle, final IDerivedTypedElementManager manager) throws DerivedTypedElementException {
if (!(query instanceof JavaQuery)) {
throw new IllegalArgumentException("The given DerivedTypedElement does not have a JavaQuery"); //$NON-NLS-1$
}
JavaQuery javaQuery = (JavaQuery) query;
if (bundle == null) {
throw new DerivedTypedElementException("Java query implementation class '" //$NON-NLS-1$
+ javaQuery.getClass().getName()
+ "' should be created within a bundle."); //$NON-NLS-1$
}
JavaQueryImplementation javaQueryEvaluator = null;
try {
String className = javaQuery.getImplementationClassName();
if (className == null || className.length() == 0) {
throw new DerivedTypedElementException("The Java query's implementationClassName must not be empty"); //$NON-NLS-1$
}
Class<?> javaQueryClass = bundle.loadClass(className);
if (!IJavaQuery2.class.isAssignableFrom(javaQueryClass)) {
throw new Exception("Java query implementation class '" + className + "' does not implement " //$NON-NLS-1$ //$NON-NLS-2$
+ IJavaQuery2.class.getSimpleName() + "."); //$NON-NLS-1$
}
javaQueryEvaluator = createJavaQueryImpl(javaQueryClass);
// Initially a null test was performed on bundle to determine whether
// to check the result type. Now we need a bundle so
// checkResultType=true
javaQueryEvaluator.setCheckResultType(true);
} catch (Exception e) {
DerivedTypedElementException queryException = new DerivedTypedElementException(
"The bundle " + bundle.getSymbolicName() + " failed to load the java query: " //$NON-NLS-1$ //$NON-NLS-2$
+ QueryUtils.getQueryDescription(javaQuery), e);
Logger.logError(queryException, Activator.getDefault());
throw queryException;
}
return javaQueryEvaluator;
}
/** This method is dedicated to isolate the "Unchecked cast" warning. */
@SuppressWarnings("unchecked")
private static JavaQueryImplementation createJavaQueryImpl(final Class<?> javaQueryClass)
throws InstantiationException, IllegalAccessException {
IJavaQuery2<EObject, ?> javaQueryInst;
javaQueryInst = (IJavaQuery2<EObject, ?>) javaQueryClass.newInstance();
JavaQueryImplementation javaQueryEvaluator = new JavaQueryImplementation(javaQueryInst);
return javaQueryEvaluator;
}
public EClass getManagedQueryType() {
return JavaQueryPackage.eINSTANCE.getJavaQuery();
}
}
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