de.devboost.eclipse.jdtutilities.ProjectUtility.java Source code

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Here is the source code for de.devboost.eclipse.jdtutilities.ProjectUtility.java

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/*******************************************************************************
 * Copyright (c) 2012-2013
 * DevBoost GmbH, Berlin, Amtsgericht Charlottenburg, HRB 140026
 * 
 * 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:
 *   DevBoost GmbH - Berlin, Germany
 *      - initial API and implementation
 ******************************************************************************/
package de.devboost.eclipse.jdtutilities;

import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.Set;

import org.eclipse.core.resources.IMarker;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IWorkspace;
import org.eclipse.core.resources.IWorkspaceRoot;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.JavaModelException;

public abstract class ProjectUtility {

    /**
     * Checks whether the given project (or one of its transitive dependencies)
     * contains errors.
     * 
     * @param projectName the name of the project to check
     * @return true if there is errors, false if not
     */
    public boolean hasProblems(String projectName) {
        IWorkspace workspace = ResourcesPlugin.getWorkspace();
        IWorkspaceRoot root = workspace.getRoot();

        Set<String> requiredProjects = new LinkedHashSet<String>();

        Set<String> projectsToAnalyze = new LinkedHashSet<String>();
        projectsToAnalyze.add(projectName);

        while (!projectsToAnalyze.isEmpty()) {
            Iterator<String> iterator = projectsToAnalyze.iterator();
            IProject project = root.getProject(iterator.next());
            iterator.remove();
            if (project != null) {
                requiredProjects.add(project.getName());
                String[] dependencies = getRequiredProjects(project);
                for (String dependency : dependencies) {
                    if (!requiredProjects.contains(dependency)) {
                        projectsToAnalyze.add(dependency);
                    }
                    requiredProjects.add(dependency);
                }
            }
        }

        for (String requiredProject : requiredProjects) {
            if (hasProblems(root.getProject(requiredProject))) {
                return true;
            }
        }
        return false;
    }

    // This code is copied from org.eclipse.debug.core.model.LaunchConfigurationDelegate.
    public boolean hasProblems(IProject project) {
        try {
            if (!project.exists()) {
                return false;
            }
            IMarker[] markers = project.findMarkers(IMarker.PROBLEM, true, IResource.DEPTH_INFINITE);
            int markerCount = markers.length;
            if (markerCount > 0) {
                for (int i = 0; i < markerCount; i++) {
                    if (isErrorOrWorse(markers[i])) {
                        return true;
                    }
                }
            }
        } catch (CoreException ce) {
            logError("Exception while checking project for error markers.", ce);
        }

        return false;
    }

    private String[] getRequiredProjects(IProject project) {
        JDTUtility jdtUtility = new JDTUtility() {

            @Override
            protected void logWarning(String message, Exception e) {
                ProjectUtility.this.logWarning(message, e);
            }

        };
        IJavaProject javaProject = jdtUtility.getJavaProject(project);

        if (javaProject != null) {
            try {
                String[] requiredProjectNames = javaProject.getRequiredProjectNames();
                return requiredProjectNames;
            } catch (JavaModelException e) {
                logError("Exception while determining project dependencies.", e);
            }
        }
        return new String[0];
    }

    // This code is copied from org.eclipse.debug.core.model.LaunchConfigurationDelegate.
    private boolean isErrorOrWorse(IMarker problemMarker) throws CoreException {
        Integer severity = (Integer) problemMarker.getAttribute(IMarker.SEVERITY);
        if (severity != null) {
            return severity.intValue() >= IMarker.SEVERITY_ERROR;
        }

        return false;
    }

    protected abstract void logError(String message, Exception e);

    protected abstract void logWarning(String message, Exception e);
}