Package org.objectstyle.wolips.eomodeler.eclipse

Source Code of org.objectstyle.wolips.eomodeler.eclipse.EclipseEOModelGroupFactory

/*
* ====================================================================
*
* The ObjectStyle Group Software License, Version 1.0
*
* Copyright (c) 2006 - 2007 The ObjectStyle Group and individual authors of the
* software. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
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* developed by the ObjectStyle Group (http://objectstyle.org/)." Alternately,
* this acknowlegement may appear in the software itself, if and wherever such
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package org.objectstyle.wolips.eomodeler.eclipse;

import java.io.File;
import java.io.IOException;
import java.net.URI;
import java.net.URL;
import java.text.ParseException;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Set;

import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IResourceVisitor;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jdt.core.IClasspathEntry;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.JavaCore;
import org.objectstyle.wolips.baseforplugins.util.URLUtils;
import org.objectstyle.wolips.core.resources.types.project.IProjectPatternsets;
import org.objectstyle.wolips.eogenerator.core.model.EOGeneratorModel;
import org.objectstyle.wolips.eogenerator.core.model.EOModelReference;
import org.objectstyle.wolips.eomodeler.core.model.EOModel;
import org.objectstyle.wolips.eomodeler.core.model.EOModelException;
import org.objectstyle.wolips.eomodeler.core.model.EOModelGroup;
import org.objectstyle.wolips.eomodeler.core.model.EOModelVerificationFailure;
import org.objectstyle.wolips.eomodeler.core.model.IEOModelGroupFactory;
import org.objectstyle.wolips.eomodeler.utils.EclipseFileUtils;

public class EclipseEOModelGroupFactory implements IEOModelGroupFactory {
  public boolean loadModelGroup(Object modelGroupResource, EOModelGroup modelGroup, Set<EOModelVerificationFailure> failures, boolean skipOnDuplicates, IProgressMonitor progressMonitor) throws EOModelException {
    int previousModelCount = modelGroup.getModels().size();
   
    try {
      IResource modelGroupEclipseResource = getEclipseResourceForModelResource(modelGroupResource);
      if (modelGroupEclipseResource != null) {
        IProject project = modelGroupEclipseResource.getProject();
        if ("eomodelgroup".equals(modelGroupEclipseResource.getFileExtension())) {
          addModelsFromEOModelGroupFile((IFile) modelGroupEclipseResource, modelGroup, failures, skipOnDuplicates, progressMonitor);
        } else {
          addModelsFromProject(modelGroup, project, new HashSet<Object>(), new HashSet<IProject>(), failures, skipOnDuplicates, progressMonitor, 0);
         
          // If you double-clicked on a model, make sure we shove it into the modelgroup, just in case it wasn't in a matching folder
          File modelGroupEclipseResourceFile = modelGroupEclipseResource.getLocation().toFile();
          if (modelGroupEclipseResourceFile != null && EOModelGroup.getModelNameForFile(modelGroupEclipseResourceFile) != null) {
            modelGroup.loadModelFromURL(modelGroupEclipseResourceFile.toURL(), failures, skipOnDuplicates, progressMonitor);
          }

          // modelGroup.resolve(failures);
          // modelGroup.verify(failures);
        }
      }
      else if (modelGroupResource instanceof URL) {
        File modelURLFile = URLUtils.cheatAndTurnIntoFile((URL)modelGroupResource);
        if (modelURLFile != null) {
          URL jarResourcesURL = new URL("jar:" + modelURLFile.toURL() + "!/Resources");
          if (URLUtils.exists(jarResourcesURL)) {
            modelGroup.loadModelsFromURL(jarResourcesURL, 1, failures, skipOnDuplicates, progressMonitor);
          }
        }
      }
      else if (modelGroupResource instanceof URI) {
        File modelURIFile = URLUtils.cheatAndTurnIntoFile((URI)modelGroupResource);
        if (modelURIFile != null) {
          URL jarResourcesURL = new URL("jar:" + modelURIFile.toURL() + "!/Resources");
          if (URLUtils.exists(jarResourcesURL)) {
            modelGroup.loadModelsFromURL(jarResourcesURL, 1, failures, skipOnDuplicates, progressMonitor);
          }
        }
      }
    } catch (EOModelException e) {
      throw e;
    } catch (Throwable t) {
      throw new EOModelException("Failed to load model group.", t);
    }
   
    boolean allModelsLoaded = modelGroup.getModels().size() - previousModelCount > 1;
    return allModelsLoaded;
  }

  protected IResource getEclipseResourceForModelResource(Object modelResource) {
    IResource resource = null;
    if (modelResource instanceof IResource) {
      resource = (IResource) modelResource;
    } else if (modelResource instanceof URL) {
      resource = EclipseFileUtils.getEclipseFile((URL) modelResource);
    } else if (modelResource instanceof URI) {
      resource = EclipseFileUtils.getEclipseFile((URI) modelResource);
    } else {
      resource = null;
    }
    return resource;
  }

  protected void addModelsFromProject(EOModelGroup modelGroup, IProject project, Set<Object> searchedResources, Set<IProject> searchedProjects, Set<EOModelVerificationFailure> failures, boolean skipOnDuplicates, IProgressMonitor progressMonitor, int depth) throws IOException, EOModelException, CoreException {
    if (!searchedProjects.contains(project)) {
      progressMonitor.setTaskName("Adding models from " + project.getName() + " ...");
      searchedProjects.add(project);
      if (!project.exists()) {
        failures.add(new EOModelVerificationFailure(null, "The dependent project '" + project.getName() + "' does not exist.", false));
      } else if (!project.isOpen()) {
        failures.add(new EOModelVerificationFailure(null, "The dependent project '" + project.getName() + "' exists but is not open.", false));
      } else {
        boolean visitedProject = false;
        boolean isJavaProject = project.getNature(JavaCore.NATURE_ID) != null;
        IClasspathEntry[] classpathEntries = null;
        if (isJavaProject) {
          IJavaProject javaProject = JavaCore.create(project);
          classpathEntries = javaProject.getResolvedClasspath(true);
        } else {
          classpathEntries = new IClasspathEntry[0];
        }
        boolean showProgress = (depth == 0);
        if (showProgress) {
          progressMonitor.beginTask("Scanning " + project.getName() + " classpath ...", classpathEntries.length + 1);
        }
        for (int classpathEntryNum = 0; classpathEntryNum < classpathEntries.length; classpathEntryNum++) {
          IClasspathEntry entry = classpathEntries[classpathEntryNum];
          int entryKind = entry.getEntryKind();
          if (entryKind == IClasspathEntry.CPE_LIBRARY) {
            List<IPath> jarPaths = new LinkedList<IPath>();
            IPath path = entry.getPath();
            IPath frameworkPath = null;
            while (frameworkPath == null && path.lastSegment() != null) {
              String lastSegment = path.lastSegment();
              if (lastSegment != null && lastSegment.endsWith(".framework")) {
                frameworkPath = path;
              } else {
                if (lastSegment != null && lastSegment.endsWith(".jar")) {
                  // MS: This is really annoying, but it appears that a jar in your project looks the
                  // same as an absolute jar path reference outside your project.  I don't know
                  // how to tell them apart, so I check to see if the jar is in your project
                  // before we fallback to the old way.
                  IFile jarInProject = project.getWorkspace().getRoot().getFile(path);
                  if (jarInProject.exists()) {
                    jarPaths.add(jarInProject.getLocation());
                  }
                  else {
                    jarPaths.add(path);
                  }
                }
                path = path.removeLastSegments(1);
              }
            }
           
            if (frameworkPath != null) {
              File resourcesFolder = frameworkPath.append("Resources").toFile();
              if (!searchedResources.contains(resourcesFolder) && resourcesFolder.exists()) {
                searchedResources.add(resourcesFolder);
                modelGroup.loadModelsFromURL(resourcesFolder.toURL(), 1, failures, skipOnDuplicates, progressMonitor);
              }
            }
           
            for (IPath jarPath : jarPaths) {
              URL jarResourcesURL = new URL("jar:" + jarPath.toFile().toURL() + "!/Resources");
              if (!searchedResources.contains(jarResourcesURL) && URLUtils.exists(jarResourcesURL)) {
                modelGroup.loadModelsFromURL(jarResourcesURL, 1, failures, skipOnDuplicates, progressMonitor);
              }
            }
          } else if (entryKind == IClasspathEntry.CPE_PROJECT) {
            IPath path = entry.getPath();
            IProject dependsOnProject = ResourcesPlugin.getWorkspace().getRoot().getProject(path.lastSegment());
            addModelsFromProject(modelGroup, dependsOnProject, searchedResources, searchedProjects, failures, skipOnDuplicates, progressMonitor, depth + 1);
          } else if (entryKind == IClasspathEntry.CPE_SOURCE) {
            visitedProject = true;
            project.accept(new ModelVisitor(project, modelGroup, searchedResources, failures, skipOnDuplicates, progressMonitor), IResource.DEPTH_INFINITE, IContainer.EXCLUDE_DERIVED);
          }
          if (showProgress) {
            progressMonitor.worked(1);
          }
        }

        if (!visitedProject) {
          project.accept(new ModelVisitor(project, modelGroup, searchedResources, failures, skipOnDuplicates, progressMonitor), IResource.DEPTH_INFINITE, IContainer.EXCLUDE_DERIVED);
          if (showProgress) {
            progressMonitor.worked(1);
          }
        }
      }
    }
  }

  protected void addModelsFromEOModelGroupFile(IFile eoModelGroupFile, EOModelGroup modelGroup, Set<EOModelVerificationFailure> failures, boolean skipOnDuplicates, IProgressMonitor progressMonitor) throws ParseException, CoreException, IOException, EOModelException {
    EOModel model = null;
    IProject project = eoModelGroupFile.getProject();
    EOGeneratorModel eogeneratorModel = EOGeneratorModel.createModelFromFile(eoModelGroupFile);
    List<EOModelReference> modelRefList = new LinkedList<EOModelReference>();
    modelRefList.addAll(eogeneratorModel.getModels());
    modelRefList.addAll(eogeneratorModel.getRefModels());
    for (EOModelReference modelRef : modelRefList) {
      String modelPath = modelRef.getPath(project);
      File modelFolder = new File(modelPath);
      if (!modelFolder.isAbsolute()) {
        modelFolder = new File(project.getLocation().toFile(), modelPath);
      }
      if (model == null) {
        modelGroup.setEditingModelURL(modelFolder.toURL());
      }
      EOModel modelGroupModel = modelGroup.loadModelFromURL(modelFolder.toURL(), failures, skipOnDuplicates, progressMonitor);
      if (model == null) {
        model = modelGroupModel;
      }
    }
  }

  protected static class ModelVisitor implements IResourceVisitor {
    private IProject _project;
   
    private EOModelGroup _modelGroup;

    private Set<EOModelVerificationFailure> _failures;

    private Set<Object> _searchedResources;

    private boolean _skipOnDuplicates;

    private IProgressMonitor _progressMonitor;
   
    private IProjectPatternsets _patternsets;

    public ModelVisitor(IProject project, EOModelGroup modelGroup, Set<Object> searchedResources, Set<EOModelVerificationFailure> failures, boolean skipOnDuplicates, IProgressMonitor progressMonitor) {
      _project = project;
      _modelGroup = modelGroup;
      _failures = failures;
      _searchedResources = searchedResources;
      _skipOnDuplicates = skipOnDuplicates;
      _progressMonitor = progressMonitor;
      _patternsets = (IProjectPatternsets) project.getAdapter(IProjectPatternsets.class);
    }

    public boolean visit(IResource resource) throws CoreException {
      try {
        if (!resource.isAccessible()) {
          return false;
        }
        if (resource.isDerived()) {
          return false;
        }

        String name = resource.getName();
        if (name != null) {
          if ("build".equals(name) || "dist".equals(name) || "target".equals(name) || name.endsWith(".wo") || "woproject".equals(name) || name.startsWith(".")) {
            return false;
          }

          if (name.endsWith(".framework") || name.endsWith(".woa")) {
            String projectName = resource.getProject().getName();
            if (name.equals(projectName + ".framework") || name.equals(projectName + ".woa")) {
              return false;
            }
          }
         
          // This is a little sketchy, but it saves a substantial amount of file system scanning ...
          if ("WebServerResources".equals(name) || "Components".equals(name)) {
            return false;
          }
        }

        boolean continueScanning = true;
        if (resource.getType() == IResource.FOLDER) {
          if (_patternsets == null || _patternsets.matchesResourcesPattern(resource)) {
            //System.out.println("ModelVisitor.visit: scanning " + resource);
            _progressMonitor.setTaskName("Scanning " + resource.getName() + " ...");
            File resourceFile = resource.getLocation().toFile();
            if (!_searchedResources.contains(resourceFile) && "eomodeld".equals(resource.getFileExtension())) {
              _modelGroup.loadModelFromURL(resourceFile.toURL(), _failures, _skipOnDuplicates, _progressMonitor);
              return false;
            }
          }
          else {
            IJavaProject javaProject = JavaCore.create(_project);
            if (javaProject.isOnClasspath(resource)) {
              //continueScanning = false;
              continueScanning = true; // This breaks Maven for now ... we'll come back to that
            }
            else {
              //System.out.println("ModelVisitor.visit: " + resource);
            }
          }
        }
        else {
          //System.out.println("ModelVisitor.visit:   skipping " + resource);
        }
       
        return continueScanning;
      } catch (Exception e) {
        e.printStackTrace();
        throw new CoreException(new Status(IStatus.ERROR, Activator.PLUGIN_ID, 0, "Failed to load model in " + resource + ": " + e, e));
      }
    }
  }
}
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