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/*******************************************************************************
* Copyright (c) 2012 protos software gmbh (http://www.protos.de).
* 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:
* Henrik Rentz-Reichert (initial contribution)
*
*******************************************************************************/
package org.eclipse.etrice.core.validation;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.ISafeRunnable;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.SafeRunner;
import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EClassifier;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.etrice.core.room.RoomPackage;
import org.eclipse.xtext.validation.AbstractDeclarativeValidator;
import org.eclipse.xtext.validation.Check;
import org.eclipse.xtext.validation.CheckMode;
import org.eclipse.xtext.validation.CheckType;
import org.eclipse.xtext.validation.EValidatorRegistrar;
import org.eclipse.xtext.validation.ValidationMessageAcceptor;
/**
* @author Henrik Rentz-Reichert
*
*/
public class ValidatorExtensionManager extends AbstractDeclarativeValidator {
public static class Registry {
private static final String PACKAGE = RoomPackage.class.getPackage().getName()+".";
private static final String IVALIDATOR_ID = "org.eclipse.etrice.core.room.validation";
private static Registry instance = null;
private HashMap<String, ArrayList<IRoomValidator>> fastClass2Ext = new HashMap<String, ArrayList<IRoomValidator>>();
private HashMap<String, ArrayList<IRoomValidator>> normalClass2Ext = new HashMap<String, ArrayList<IRoomValidator>>();
private HashMap<String, ArrayList<IRoomValidator>> expensiveClass2Ext = new HashMap<String, ArrayList<IRoomValidator>>();
public static Registry getInstance() {
if (instance==null)
instance = new Registry();
return instance;
}
public void loadValidatorExtensions() {
IConfigurationElement[] config = Platform.getExtensionRegistry()
.getConfigurationElementsFor(IVALIDATOR_ID);
// compute all sub classes for all classes of the Room package
HashMap<String, ArrayList<String>> cls2sub = new HashMap<String, ArrayList<String>>();
for (EClassifier cls : RoomPackage.eINSTANCE.getEClassifiers()) {
if (cls instanceof EClass) {
EList<EClass> superTypes = ((EClass) cls).getESuperTypes();
for (EClass sup : superTypes) {
put(sup.getName(), ((EClass) cls).getName(), cls2sub);
}
}
}
// now we add each extension to our maps
try {
for (IConfigurationElement e : config) {
final Object ext = e.createExecutableExtension("class");
if (ext instanceof IRoomValidator) {
String mode = e.getAttribute("mode");
String classToCheck = e.getAttribute("classToCheck");
if (classToCheck.startsWith(PACKAGE))
classToCheck = classToCheck.substring(PACKAGE.length());
EClassifier cls = RoomPackage.eINSTANCE.getEClassifier(classToCheck);
if (cls instanceof EClass) {
HashMap<String,ArrayList<IRoomValidator>> map = getMap(mode);
if (map!=null) {
put(map, ((EClass) cls).getName(), (IRoomValidator) ext);
ArrayList<String> subTypes = cls2sub.get(cls.getName());
if (subTypes!=null)
for (String type : subTypes) {
put(map, type, (IRoomValidator) ext);
}
}
}
}
else {
System.out.println("ValidatorExtensionManager: unexpected extension");
}
}
} catch (CoreException ex) {
System.out.println(ex.getMessage());
}
}
public void validate(EObject object, CheckMode checkMode,
ValidationMessageAcceptor messageAcceptor) {
HashSet<IRoomValidator> executed = new HashSet<IRoomValidator>();
if (checkMode.shouldCheck(CheckType.FAST))
validate(object, messageAcceptor, fastClass2Ext, executed);
if (checkMode.shouldCheck(CheckType.NORMAL))
validate(object, messageAcceptor, normalClass2Ext, executed);
if (checkMode.shouldCheck(CheckType.EXPENSIVE))
validate(object, messageAcceptor, expensiveClass2Ext, executed);
}
private void validate(EObject object,
ValidationMessageAcceptor messageAcceptor,
HashMap<String, ArrayList<IRoomValidator>> map, HashSet<IRoomValidator> executed) {
ArrayList<IRoomValidator> validators = map.get(object.eClass().getName());
if (validators!=null)
for (IRoomValidator validator : validators) {
if (!executed.contains(validator)) {
executed.add(validator);
executeExtension(validator, object, messageAcceptor);
}
}
}
private void put(String cls, String sub,
HashMap<String,ArrayList<String>> cls2sub) {
ArrayList<String> list = cls2sub.get(cls);
if (list==null) {
list = new ArrayList<String>();
cls2sub.put(cls, list);
}
list.add(sub);
}
private void put(HashMap<String, ArrayList<IRoomValidator>> map, String cls, IRoomValidator val) {
ArrayList<IRoomValidator> list = map.get(cls);
if (list==null) {
list = new ArrayList<IRoomValidator>();
map.put(cls, list);
}
list.add(val);
}
private HashMap<String, ArrayList<IRoomValidator>> getMap(String mode) {
if (mode.equals(CheckType.FAST.name()))
return fastClass2Ext;
else if (mode.equals(CheckType.NORMAL.name()))
return normalClass2Ext;
else if (mode.equals(CheckType.EXPENSIVE.name()))
return normalClass2Ext;
else
return null;
}
private void executeExtension(
final IRoomValidator validator,
final EObject object,
final ValidationMessageAcceptor messageAcceptor) {
ISafeRunnable runnable = new ISafeRunnable() {
@Override
public void handleException(Throwable exception) {
System.out.println("Exception in IRoomValidator");
}
@Override
public void run() throws Exception {
validator.validate(object, messageAcceptor);
}
};
SafeRunner.run(runnable);
}
}
public ValidatorExtensionManager() {
}
@Check
public void checkObject(EObject object) {
Registry.getInstance().validate(object, getCheckMode(), getMessageAcceptor());
}
@Override
public void register(EValidatorRegistrar registrar) {
// HOWTO: if this validator is registered for the RoomPackage then it is called twice
}
// @Override
// protected List<EPackage> getEPackages() {
// List<EPackage> result = new ArrayList<EPackage>();
// result.add(RoomPackage.eINSTANCE);
// return result;
// }
}
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