/*******************************************************************************
* Copyright (c) 2003, 2005 IBM Corporation and others.
* 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jst.j2ee.internal.validation;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IProject;
import org.eclipse.jdt.core.IPackageFragmentRoot;
import org.eclipse.jem.workbench.utility.JemProjectUtilities;
import org.eclipse.jst.j2ee.internal.project.J2EEProjectUtilities;
import org.eclipse.wst.common.componentcore.ComponentCore;
import org.eclipse.wst.common.componentcore.resources.IVirtualComponent;
import org.eclipse.wst.validation.internal.IProjectValidationHelper;
public class ProjectValidationHelper implements IProjectValidationHelper {
private static IContainer[] EMPTY_RESULT = new IContainer[] {};
private static ProjectValidationHelper INSTANCE;
private IContainer[] outputs;
private IContainer[] sources;
public static ProjectValidationHelper getInstance(){
if (INSTANCE == null)
INSTANCE = new ProjectValidationHelper();
return INSTANCE;
}
public void disposeInstance(){
INSTANCE = null;
}
private IContainer[] getCachedOutputContainers(IProject project) {
if (outputs != null)
return outputs;
if (project == null || JemProjectUtilities.getJavaProject(project)==null) {
outputs = EMPTY_RESULT;
return EMPTY_RESULT;
}
IVirtualComponent comp = ComponentCore.createComponent(project);
if (comp == null || !comp.exists()) {
outputs = EMPTY_RESULT;
return EMPTY_RESULT;
}
outputs = J2EEProjectUtilities.getOutputContainers(project);
return outputs;
}
public IContainer[] getOutputContainers(IProject project) {
ProjectValidationHelper inst = getInstance();
if(inst == null){
return null;
}
return inst.getCachedOutputContainers(project);
}
private IContainer[] getCachedSourceContainers(IProject project) {
if (sources != null)
return sources;
if (project == null || JemProjectUtilities.getJavaProject(project)==null) {
sources = EMPTY_RESULT;
return EMPTY_RESULT;
}
IVirtualComponent comp = ComponentCore.createComponent(project);
if (comp == null || !comp.exists()) {
sources = EMPTY_RESULT;
return EMPTY_RESULT;
}
IPackageFragmentRoot[] roots = J2EEProjectUtilities.getSourceContainers(project);
List result = new ArrayList();
for (int i=0; i<roots.length; i++) {
if (roots[i].getResource() != null && roots[i].getResource() instanceof IContainer)
result.add(roots[i].getResource());
}
sources = (IContainer[]) result.toArray(new IContainer[result.size()]);
return sources;
}
public IContainer[] getSourceContainers(IProject project) {
return getInstance().getCachedSourceContainers(project);
}
}