BeansTypeHierachyProjectContributionEventListener.java

/*******************************************************************************
 * Copyright (c) 2008, 2014 Spring IDE Developers
 * 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:
 *     Spring IDE Developers - initial API and implementation
 *******************************************************************************/
package org.springframework.ide.eclipse.beans.core.internal.model.validation;

import java.util.List;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResourceDelta;
import org.springframework.ide.eclipse.core.internal.model.validation.ValidatorDefinition;
import org.springframework.ide.eclipse.core.java.typehierarchy.TypeHierarchyEngine;
import org.springframework.ide.eclipse.core.project.IProjectContributionEventListener;
import org.springframework.ide.eclipse.core.project.IProjectContributorState;
import org.springframework.ide.eclipse.core.project.ProjectBuilderDefinition;
import org.springframework.ide.eclipse.core.project.ProjectContributionEventListenerAdapter;

/**
 * {@link IProjectContributionEventListener} implementation that prepares and registers a {@link BeansTypeHierachyState}to make complex class -> bean dependency calculations accessible for subsequent requests.
 * 
 * @author Christian Dupuis
 * @since 2.2.0
 */
public class BeansTypeHierachyProjectContributionEventListener extends ProjectContributionEventListenerAdapter {

	/**
	 * Register an instance of {@link BeansTypeHierachyState} with the given <code>state</code> instance.
	 */
	@Override
	public void start(int kind, IResourceDelta delta, List<ProjectBuilderDefinition> builderDefinitions,
			List<ValidatorDefinition> validatorDefinitions, IProjectContributorState state, IProject project) {

//		System.out.println("new beans type hierarchy state created");
		
		TypeHierarchyEngine typeEngine = state.get(TypeHierarchyEngine.class);
		state.hold(new BeansTypeHierachyState(typeEngine));
	}

}