| /******************************************************************************* |
| * Copyright (c) 2006, 2007 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 |
| * yyyymmdd bug Email and other contact information |
| * -------- -------- ----------------------------------------------------------- |
| * 20060131 121071 rsinha@ca.ibm.com - Rupam Kuehner (creation) |
| * 20060427 126780 rsinha@ca.ibm.com - Rupam Kuehner |
| * 20070402 151943 sengpl@ca.ibm.com - Seng Phung-Lu |
| *******************************************************************************/ |
| package org.eclipse.jst.ws.internal.consumption.common; |
| |
| import java.util.ArrayList; |
| import java.util.HashSet; |
| import java.util.Hashtable; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Set; |
| |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.wst.common.project.facet.core.IFacetedProjectTemplate; |
| import org.eclipse.wst.common.project.facet.core.IProjectFacet; |
| import org.eclipse.wst.common.project.facet.core.IProjectFacetVersion; |
| import org.eclipse.wst.common.project.facet.core.ProjectFacetsManager; |
| import org.eclipse.wst.common.project.facet.core.VersionFormatException; |
| |
| |
| /** |
| * FacetSetsByTemplateCache caches the sets of facet version combinations for templates. |
| */ |
| public class FacetSetsByTemplateCache |
| { |
| // single instance per workbench |
| private static FacetSetsByTemplateCache instance_; |
| |
| //facetSetsByTemplateId_: |
| //key: Object of type String. String id of an IFacetedProjectTemplate. |
| //value: Object of Set[]. An array of Sets where each set contains elements of type IProjectFacetVersion. |
| private Hashtable facetSetsByTemplateId_; |
| /** |
| * Returns a singleton instance of this class. |
| * |
| * @return A singleton FacetSetsByTemplateCache object. |
| */ |
| public static synchronized FacetSetsByTemplateCache getInstance() |
| { |
| if (instance_ == null) |
| { |
| instance_ = new FacetSetsByTemplateCache(); |
| instance_.load(); |
| } |
| return instance_; |
| } |
| |
| private void load() |
| { |
| facetSetsByTemplateId_ = new Hashtable(); |
| } |
| |
| /** |
| * Returns all the valid facet version combinations that can be derived from the fixed facets |
| * of the given template. For example, if the template has two fixed facets, A and B, |
| * and A has versions 1.0 and 2.0, B has versions 1.1, 2.1, |
| * the following array of Sets will be returned (assuming for the sake of the example |
| * that all the combinations are valid):<br/> |
| * {Set1, Set2, Set3, Set4}, where<br/> |
| * Set1 = [A1.0, B1.1]<br/> |
| * Set2 = [A2.0, B1.1]<br/> |
| * Set3 = [A1.0, B2.1]<br/> |
| * Set4 = [A2.0, B2.1]<br/> |
| * <br/> |
| * @param templateId id of an {@link IFacetedProjectTemplate} |
| * @return Set[] An array of Sets where each set contains elements of type {@link IProjectFacetVersion}. |
| */ |
| public synchronized Set[] getFacetVersionCombinationsFromTemplate(String templateId) |
| { |
| //Return the cached combinations if present. |
| Set[] cachedCombinations = (Set[])facetSetsByTemplateId_.get(templateId); |
| if (cachedCombinations != null) |
| { |
| return cachedCombinations; |
| } |
| else |
| { |
| |
| //Combinations have not yet been cached for the given template. |
| //Determine the combinations and cache them. |
| IFacetedProjectTemplate template = ProjectFacetsManager.getTemplate(templateId); |
| Set fixedFacets = template.getFixedProjectFacets(); |
| |
| //Create an array of arrays. Each element of the array will contain the array |
| //of IProjectFacetVersions for each IProjectFacet in the set of fixed facets. |
| Iterator itr = fixedFacets.iterator(); |
| ArrayList projectFacetVersionArrays = new ArrayList(); |
| |
| while (itr.hasNext()) |
| { |
| IProjectFacet facet = (IProjectFacet) itr.next(); |
| List versions = null; |
| try |
| { |
| // Get the facet versions in ascending order. |
| versions = facet.getSortedVersions(true); |
| } catch (VersionFormatException e) { |
| Set versionSet = facet.getVersions(); |
| Iterator versionSetItr = versionSet.iterator(); |
| versions = new ArrayList(); |
| while (versionSetItr.hasNext()) |
| { |
| versions.add(itr.next()); |
| } |
| } catch (CoreException e) { |
| Set versionSet = facet.getVersions(); |
| Iterator versionSetItr = versionSet.iterator(); |
| versions = new ArrayList(); |
| while (versionSetItr.hasNext()) |
| { |
| versions.add(itr.next()); |
| } |
| } |
| |
| if (versions.size() > 0) |
| { |
| //Create an array of IProjectFacetVersions from versions. |
| Iterator versionItr = versions.iterator(); |
| ArrayList arrayOfVersionsList = new ArrayList(); |
| while (versionItr.hasNext()) |
| { |
| IProjectFacetVersion pfv = (IProjectFacetVersion)versionItr.next(); |
| arrayOfVersionsList.add(pfv); |
| } |
| |
| //Add the array of versions to the list of arrays. |
| projectFacetVersionArrays.add((IProjectFacetVersion[])arrayOfVersionsList.toArray(new IProjectFacetVersion[0])); |
| |
| |
| } |
| } |
| Set[] allValidCombinationsArray = new HashSet[0]; |
| if (projectFacetVersionArrays.size()>0) { |
| IProjectFacetVersion[][] arrayOfProjectFacetVersionArrays = (IProjectFacetVersion[][])projectFacetVersionArrays.toArray(new IProjectFacetVersion[0][0]); |
| allValidCombinationsArray = FacetUtils.getFacetCombinations(arrayOfProjectFacetVersionArrays, true); |
| facetSetsByTemplateId_.put(templateId, allValidCombinationsArray); |
| } |
| |
| return allValidCombinationsArray; |
| } |
| } |
| } |