org.eclipse.jst.javaee.internal.adapter.JavaEEArtifactAdapterFactory.java Source code

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Here is the source code for org.eclipse.jst.javaee.internal.adapter.JavaEEArtifactAdapterFactory.java

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/*******************************************************************************
 * Copyright (c) 2009 SAP AG 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:
 * SAP AG - initial API and implementation
 *******************************************************************************/
package org.eclipse.jst.javaee.internal.adapter;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IAdapterFactory;
import org.eclipse.core.runtime.Platform;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jst.j2ee.core.internal.plugin.J2EECorePlugin;

public abstract class JavaEEArtifactAdapterFactory implements IAdapterFactory {

    public Object getAdapter(Object adaptableObject, Class adapterType) {
        if (adapterType == IJavaElement.class) {
            IJavaProject javaProject = getJavaProject(adaptableObject);
            String className = getFullyQualifiedClassName(adaptableObject);
            return getJavaElement(javaProject, className);
        }
        return null;
    }

    public Class[] getAdapterList() {
        return new Class[] { IJavaElement.class };
    }

    protected abstract String getFullyQualifiedClassName(Object adaptableObject);

    private IJavaProject getJavaProject(Object adaptableObject) {
        IResource resource = getResource(adaptableObject);
        if (resource != null) {
            IProject project = resource.getProject();
            return JavaCore.create(project);
        }
        return null;
    }

    private IResource getResource(Object adaptableObject) {
        if (adaptableObject instanceof IAdaptable) {
            return (IResource) ((IAdaptable) adaptableObject).getAdapter(IResource.class);
        }
        return (IResource) Platform.getAdapterManager().getAdapter(adaptableObject, IResource.class);
    }

    private IJavaElement getJavaElement(IJavaProject javaProject, String className) {
        if (className != null && javaProject != null && javaProject.exists()) {
            try {
                return javaProject.findType(className);
            } catch (JavaModelException e) {
                J2EECorePlugin.logError(e);
            }
        }
        return null;
    }

}