PersistenceGlobalScopeProvider.java

/**
 * Copyright (c) 2014-2017 by the respective copyright holders.
 * 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
 */
package org.eclipse.smarthome.model.persistence.scoping;

import java.util.List;

import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.resource.impl.ResourceImpl;
import org.eclipse.smarthome.model.persistence.persistence.Strategy;
import org.eclipse.xtext.resource.EObjectDescription;
import org.eclipse.xtext.resource.IEObjectDescription;
import org.eclipse.xtext.scoping.IScope;
import org.eclipse.xtext.scoping.impl.AbstractGlobalScopeProvider;
import org.eclipse.xtext.scoping.impl.SimpleScope;

import com.google.common.base.Predicate;
import com.google.common.collect.Lists;

public class PersistenceGlobalScopeProvider extends AbstractGlobalScopeProvider {

    static protected Resource res = new ResourceImpl();

    static {
        res.setURI(URI.createURI("virtual://eclipse.org/smarthome/persistence/strategy.global"));
        res.getContents().add(GlobalStrategies.UPDATE);
        res.getContents().add(GlobalStrategies.CHANGE);
        res.getContents().add(GlobalStrategies.RESTORE);
    }

    @Override
    protected IScope getScope(Resource resource, boolean ignoreCase, EClass type,
            Predicate<IEObjectDescription> predicate) {
        IScope parentScope = super.getScope(resource, ignoreCase, type, predicate);
        List<IEObjectDescription> descs = Lists.newArrayList();
        for (EObject eObj : res.getContents()) {
            if (eObj instanceof Strategy) {
                Strategy strategy = (Strategy) eObj;
                descs.add(EObjectDescription.create(strategy.getName(), strategy));
            }
        }
        return new SimpleScope(parentScope, descs);
    }

}