| /******************************************************************************* |
| * Copyright (c) 2007, 2010 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 |
| *******************************************************************************/ |
| package org.eclipse.pde.core.plugin; |
| |
| import java.util.ArrayList; |
| |
| import java.util.List; |
| |
| import org.eclipse.core.resources.IProject; |
| import org.eclipse.osgi.service.resolver.BundleDescription; |
| import org.eclipse.osgi.service.resolver.VersionRange; |
| import org.eclipse.pde.internal.core.PDECore; |
| import org.eclipse.pde.internal.core.util.VersionUtil; |
| import org.osgi.framework.Version; |
| |
| /** |
| * The central access point for models representing plug-ins found in the workspace |
| * and in the targret platform. |
| * <p> |
| * This class provides static methods only; it is not intended to be |
| * instantiated or subclassed by clients. |
| * </p> |
| * |
| * @since 3.3 |
| * |
| * @noextend This class is not intended to be subclassed by clients. |
| * @noinstantiate This class is not intended to be instantiated by clients. |
| */ |
| public class PluginRegistry { |
| |
| /** |
| * Filter used when searching for plug-in models. |
| * <p> |
| * Clients may subclass this class to implement custom filters. |
| * </p> |
| * @see PluginRegistry#findBundle(String, String, int, PluginFilter) |
| * @see PluginRegistry#findBundle(String, VersionRange, PluginFilter) |
| * @since 3.6 |
| */ |
| public static class PluginFilter { |
| |
| /** |
| * Returns whether the given model is accepted by this filter. |
| * |
| * @param model plug-in model |
| * @return whether accepted by this filter |
| */ |
| public boolean accept(IPluginModelBase model) { |
| return true; |
| } |
| |
| } |
| |
| /** |
| * Returns a model entry containing all workspace and target plug-ins by the given ID |
| * |
| * @param id the plug-in ID |
| * |
| * @return a model entry containing all workspace and target plug-ins by the given ID |
| */ |
| public static ModelEntry findEntry(String id) { |
| return PDECore.getDefault().getModelManager().findEntry(id); |
| } |
| |
| /** |
| * Returns the plug-in model for the best match plug-in with the given ID. |
| * A null value is returned if no such bundle is found in the workspace or target platform. |
| * <p> |
| * A workspace plug-in is always preferably returned over a target plug-in. |
| * A plug-in that is checked/enabled on the Target Platform preference page is always |
| * preferably returned over a target plug-in that is unchecked/disabled. |
| * </p> |
| * <p> |
| * In the case of a tie among workspace plug-ins or among target plug-ins, |
| * the plug-in with the highest version is returned. |
| * </p> |
| * <p> |
| * In the case of a tie among more than one suitable plug-in that have the same version, |
| * one of those plug-ins is randomly returned. |
| * </p> |
| * |
| * @param id the plug-in ID |
| * @return the plug-in model for the best match plug-in with the given ID |
| */ |
| public static IPluginModelBase findModel(String id) { |
| return PDECore.getDefault().getModelManager().findModel(id); |
| } |
| |
| /** |
| * Returns the plug-in model corresponding to the given project, or <code>null</code> |
| * if the project does not represent a plug-in project or if it contains a manifest file |
| * that is malformed or missing vital information. |
| * |
| * @param project the project |
| * @return a plug-in model corresponding to the project or <code>null</code> if the project |
| * is not a plug-in project |
| */ |
| public static IPluginModelBase findModel(IProject project) { |
| return PDECore.getDefault().getModelManager().findModel(project); |
| } |
| |
| /** |
| * Returns a plug-in model associated with the given bundle description |
| * |
| * @param desc the bundle description |
| * |
| * @return a plug-in model associated with the given bundle description or <code>null</code> |
| * if none exists |
| */ |
| public static IPluginModelBase findModel(BundleDescription desc) { |
| return PDECore.getDefault().getModelManager().findModel(desc); |
| } |
| |
| /** |
| * Returns all plug-ins and fragments in the workspace as well as all plug-ins and fragments that are |
| * checked on the Target Platform preference page. |
| * <p> |
| * If a workspace plug-in/fragment has the same ID as a target plug-in/fragment, the target counterpart |
| * is skipped and not included. |
| * </p> |
| * <p> |
| * Equivalent to <code>getActiveModels(true)</code> |
| * </p> |
| * |
| * @return all plug-ins and fragments in the workspace as well as all plug-ins and fragments that are |
| * checked on the Target Platform preference page. |
| */ |
| public static IPluginModelBase[] getActiveModels() { |
| return getActiveModels(true); |
| } |
| |
| /** |
| * Returns all plug-ins and (possibly) fragments in the workspace as well as all plug-ins and (possibly) |
| * fragments that are checked on the Target Platform preference page. |
| * <p> |
| * If a workspace plug-in/fragment has the same ID as a target plug-in, the target counterpart |
| * is skipped and not included. |
| * </p> |
| * <p> |
| * The returned result includes fragments only if <code>includeFragments</code> |
| * is set to true |
| * </p> |
| * @param includeFragments a boolean indicating if fragments are desired in the returned |
| * result |
| * @return all plug-ins and (possibly) fragments in the workspace as well as all plug-ins and |
| * (possibly) fragments that are checked on the Target Platform preference page. |
| */ |
| public static IPluginModelBase[] getActiveModels(boolean includeFragments) { |
| return PDECore.getDefault().getModelManager().getActiveModels(includeFragments); |
| } |
| |
| /** |
| * Returns all plug-ins and fragments in the workspace as well as all target plug-ins and fragments, regardless |
| * whether or not they are checked or not on the Target Platform preference page. |
| * <p> |
| * If a workspace plug-in/fragment has the same ID as a target plug-in, the target counterpart |
| * is skipped and not included. |
| * </p> |
| * <p> |
| * Equivalent to <code>getAllModels(true)</code> |
| * </p> |
| * |
| * @return all plug-ins and fragments in the workspace as well as all target plug-ins and fragments, regardless |
| * whether or not they are checked on the Target Platform preference page. |
| */ |
| public static IPluginModelBase[] getAllModels() { |
| return getAllModels(true); |
| } |
| |
| /** |
| * Returns all plug-ins and (possibly) fragments in the workspace as well as all plug-ins |
| * and (possibly) fragments, regardless whether or not they are |
| * checked on the Target Platform preference page. |
| * <p> |
| * If a workspace plug-in/fragment has the same ID as a target plug-in/fragment, the target counterpart |
| * is skipped and not included. |
| * </p> |
| * <p> |
| * The returned result includes fragments only if <code>includeFragments</code> |
| * is set to true |
| * </p> |
| * @param includeFragments a boolean indicating if fragments are desired in the returned |
| * result |
| * @return ll plug-ins and (possibly) fragments in the workspace as well as all plug-ins |
| * and (possibly) fragments, regardless whether or not they are |
| * checked on the Target Platform preference page. |
| */ |
| public static IPluginModelBase[] getAllModels(boolean includeFragments) { |
| return PDECore.getDefault().getModelManager().getAllModels(includeFragments); |
| } |
| |
| /** |
| * Returns all plug-in models in the workspace |
| * |
| * @return all plug-in models in the workspace |
| */ |
| public static IPluginModelBase[] getWorkspaceModels() { |
| return PDECore.getDefault().getModelManager().getWorkspaceModels(); |
| } |
| |
| /** |
| * Return the model manager that keeps track of plug-ins in the target platform |
| * |
| * @return the model manager that keeps track of plug-ins in the target platform |
| */ |
| public static IPluginModelBase[] getExternalModels() { |
| return PDECore.getDefault().getModelManager().getExternalModels(); |
| } |
| |
| /** |
| * Returns whether the given model matches the given id, version, and match rule. |
| * |
| * @param base match candidate |
| * @param id id to match |
| * @param version version to match or <code>null</code> |
| * @param match version match rule |
| * @return whether the model is a match |
| */ |
| private static boolean isMatch(IPluginBase base, String id, String version, int match) { |
| // if version is null, then match any version with same ID |
| if (version == null) |
| return base.getId().equals(id); |
| return VersionUtil.compare(base.getId(), base.getVersion(), id, version, match); |
| } |
| |
| /** |
| * Returns a model matching the given id, version, match rule, and optional filter, |
| * or <code>null</code> if none. |
| * p> |
| * A workspace plug-in is always preferably returned over a target plug-in. |
| * A plug-in that is checked/enabled on the Target Platform preference page is always |
| * preferably returned over a target plug-in that is unchecked/disabled. |
| * </p> |
| * <p> |
| * In the case of a tie among workspace plug-ins or among target plug-ins, |
| * the plug-in with the highest version is returned. |
| * </p> |
| * <p> |
| * In the case of a tie among more than one suitable plug-in that have the same version, |
| * one of those plug-ins is randomly returned. |
| * </p> |
| * |
| * @param id symbolic name of a plug-in to find |
| * @param version minimum version, or <code>null</code> to only match on symbolic name |
| * @param match one of {@link IMatchRules#COMPATIBLE}, {@link IMatchRules#EQUIVALENT}, |
| * {@link IMatchRules#GREATER_OR_EQUAL}, {@link IMatchRules#PERFECT}, or {@link IMatchRules#NONE} |
| * when a version is unspecified |
| * @param filter a plug-in filter or <code>null</code> |
| * |
| * @return a matching model or <code>null</code> |
| * @since 3.6 |
| */ |
| public static IPluginModelBase findModel(String id, String version, int match, PluginFilter filter) { |
| return getMax(findModels(id, version, match, filter)); |
| } |
| |
| /** |
| * Returns all models matching the given id, version, match rule, and optional filter. |
| * <p> |
| * Target (external) plug-ins/fragments with the same ID as workspace counterparts are not |
| * considered. |
| * </p> |
| * <p> |
| * Returns plug-ins regardless of whether they are checked/enabled or unchecked/disabled |
| * on the Target Platform preference page. |
| * </p> |
| * @param id symbolic name of a plug-ins to find |
| * @param version minimum version, or <code>null</code> to only match on symbolic name |
| * @param match one of {@link IMatchRules#COMPATIBLE}, {@link IMatchRules#EQUIVALENT}, |
| * {@link IMatchRules#GREATER_OR_EQUAL}, {@link IMatchRules#PERFECT}, or {@link IMatchRules#NONE} |
| * when a version is unspecified |
| * @param filter a plug-in filter or <code>null</code> |
| * |
| * @return a matching models, possibly an empty collection |
| * @since 3.6 |
| */ |
| public static IPluginModelBase[] findModels(String id, String version, int match, PluginFilter filter) { |
| IPluginModelBase[] models = PluginRegistry.getAllModels(); |
| List results = new ArrayList(); |
| for (int i = 0; i < models.length; i++) { |
| IPluginModelBase model = models[i]; |
| if ((filter == null || filter.accept(model)) && isMatch(model.getPluginBase(), id, version, match)) |
| results.add(model); |
| } |
| return (IPluginModelBase[]) results.toArray(new IPluginModelBase[results.size()]); |
| } |
| |
| /** |
| * Returns a model matching the given id, version range, and optional filter, |
| * or <code>null</code> if none. |
| * <p> |
| * A workspace plug-in is always preferably returned over a target plug-in. |
| * A plug-in that is checked/enabled on the Target Platform preference page is always |
| * preferably returned over a target plug-in that is unchecked/disabled. |
| * </p> |
| * <p> |
| * In the case of a tie among workspace plug-ins or among target plug-ins, |
| * the plug-in with the highest version is returned. |
| * </p> |
| * <p> |
| * In the case of a tie among more than one suitable plug-in that have the same version, |
| * one of those plug-ins is randomly returned. |
| * </p> |
| * @param id symbolic name of plug-in to find |
| * @param range acceptable version range to match, or <code>null</code> for any range |
| * @param filter a plug-in filter or <code>null</code> |
| * |
| * @return a matching model or <code>null</code> |
| * @since 3.6 |
| */ |
| public static IPluginModelBase findModel(String id, VersionRange range, PluginFilter filter) { |
| return getMax(findModels(id, range, filter)); |
| } |
| |
| /** |
| * Returns the plug-in with the highest version, or <code>null</code> if empty. |
| * |
| * @param models models |
| * @return plug-in with the highest version or <code>null</code> |
| */ |
| private static IPluginModelBase getMax(IPluginModelBase[] models) { |
| if (models.length == 0) { |
| return null; |
| } |
| if (models.length == 1) { |
| return models[0]; |
| } |
| IPluginModelBase max = null; |
| Version maxV = null; |
| for (int i = 0; i < models.length; i++) { |
| IPluginModelBase model = models[i]; |
| if (max == null) { |
| max = model; |
| maxV = new Version(model.getPluginBase().getVersion()); |
| } else { |
| Version version = new Version(model.getPluginBase().getVersion()); |
| if (VersionUtil.isGreaterOrEqualTo(version, maxV)) { |
| max = model; |
| maxV = version; |
| } |
| } |
| } |
| return max; |
| } |
| |
| /** |
| * Returns all models matching the given id, version range, and optional filter. |
| * <p> |
| * Target (external) plug-ins/fragments with the same ID as workspace counterparts are not |
| * considered. |
| * </p> |
| * <p> |
| * Returns plug-ins regardless of whether they are checked/enabled or unchecked/disabled |
| * on the Target Platform preference page. |
| * </p> |
| * @param id symbolic name of plug-ins to find |
| * @param range acceptable version range to match, or <code>null</code> for any range |
| * @param filter a plug-in filter or <code>null</code> |
| * |
| * @return a matching models, possibly empty |
| * @since 3.6 |
| */ |
| public static IPluginModelBase[] findModels(String id, VersionRange range, PluginFilter filter) { |
| IPluginModelBase[] models = PluginRegistry.getAllModels(); |
| List results = new ArrayList(); |
| for (int i = 0; i < models.length; i++) { |
| IPluginModelBase model = models[i]; |
| if ((filter == null || filter.accept(model)) && id.equals(model.getPluginBase().getId())) { |
| if (range == null || range.isIncluded(new Version(model.getPluginBase().getVersion()))) { |
| results.add(model); |
| } |
| } |
| } |
| return (IPluginModelBase[]) results.toArray(new IPluginModelBase[results.size()]); |
| } |
| } |