org.seasar.s2daoplugin.util.JavaProjectUtil.java Source code

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Here is the source code for org.seasar.s2daoplugin.util.JavaProjectUtil.java

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/*
 * Copyright 2004-2006 the Seasar Foundation and the Others.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 
 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.seasar.s2daoplugin.util;

import java.util.HashSet;
import java.util.Set;

import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.IPath;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.IPackageFragment;
import org.eclipse.jdt.core.IPackageFragmentRoot;
import org.eclipse.jdt.core.IType;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.core.JavaModelException;
import org.seasar.s2daoplugin.S2DaoPlugin;

public class JavaProjectUtil {

    public static boolean isInSourceFolder(IResource resource) {
        return resource != null && JavaCore.create(resource.getParent()) != null;
    }

    public static IPackageFragmentRoot findPackageFragmentRoot(IType type) {
        return type != null ? ascend(type.getPackageFragment()) : null;
    }

    public static IPackageFragmentRoot findPackageFragmentRoot(IResource resource) {
        return resource != null ? ascend(JavaCore.create(resource.getParent())) : null;
    }

    public static IPackageFragmentRoot[] findPackageFragmentRootsSharedOutputLocation(IResource resource) {
        return findPackageFragmentRootsSharedOutputLocation(findPackageFragmentRoot(resource));
    }

    public static IPackageFragmentRoot[] findPackageFragmentRootsSharedOutputLocation(IPackageFragmentRoot root) {
        if (root == null) {
            return new IPackageFragmentRoot[0];
        }
        IJavaProject project = root.getJavaProject();
        Set result = new HashSet();
        try {
            IPath output1 = root.getRawClasspathEntry().getOutputLocation();
            if (output1 == null) {
                output1 = project.getOutputLocation();
            }
            IPackageFragmentRoot[] roots = project.getPackageFragmentRoots();
            for (int i = 0; i < roots.length; i++) {
                if (roots[i].getKind() == IPackageFragmentRoot.K_BINARY) {
                    continue;
                }
                IPath output2 = roots[i].getRawClasspathEntry().getOutputLocation();
                if (output2 == null) {
                    output2 = project.getOutputLocation();
                }
                if (output1.equals(output2)) {
                    result.add(roots[i]);
                }
            }
        } catch (JavaModelException e) {
            S2DaoPlugin.log(e);
        }
        return (IPackageFragmentRoot[]) result.toArray(new IPackageFragmentRoot[result.size()]);
    }

    private static IPackageFragmentRoot ascend(IJavaElement element) {
        while (element instanceof IPackageFragment) {
            element = ((IPackageFragment) element).getParent();
        }
        return element instanceof IPackageFragmentRoot ? (IPackageFragmentRoot) element : null;
    }

}