diff options
Diffstat (limited to 'jsf/plugins/org.eclipse.jst.jsf.core/src/org/eclipse/jst/jsf/core/internal/CompositeTagRegistryFactory.java')
| -rw-r--r-- | jsf/plugins/org.eclipse.jst.jsf.core/src/org/eclipse/jst/jsf/core/internal/CompositeTagRegistryFactory.java | 316 |
1 files changed, 0 insertions, 316 deletions
diff --git a/jsf/plugins/org.eclipse.jst.jsf.core/src/org/eclipse/jst/jsf/core/internal/CompositeTagRegistryFactory.java b/jsf/plugins/org.eclipse.jst.jsf.core/src/org/eclipse/jst/jsf/core/internal/CompositeTagRegistryFactory.java deleted file mode 100644 index 9a56b804d..000000000 --- a/jsf/plugins/org.eclipse.jst.jsf.core/src/org/eclipse/jst/jsf/core/internal/CompositeTagRegistryFactory.java +++ /dev/null @@ -1,316 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2001, 2008 Oracle 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: - * Oracle Corporation - initial API and implementation - *******************************************************************************/ -package org.eclipse.jst.jsf.core.internal; - -import java.util.ArrayList; -import java.util.Collections; -import java.util.HashMap; -import java.util.HashSet; -import java.util.Iterator; -import java.util.List; -import java.util.Map; -import java.util.Set; - -import org.eclipse.core.resources.IProject; -import org.eclipse.core.runtime.content.IContentType; -import org.eclipse.jst.jsf.common.internal.policy.CanonicallyOrderedIteratorPolicy; -import org.eclipse.jst.jsf.common.internal.policy.IIteratorPolicy; -import org.eclipse.jst.jsf.common.internal.policy.IdentifierOrderedIteratorPolicy; -import org.eclipse.jst.jsf.common.internal.strategy.AbstractIdentifiableStrategy; -import org.eclipse.jst.jsf.common.internal.strategy.IIdentifiableStrategy; -import org.eclipse.jst.jsf.common.internal.strategy.IteratorPolicyBasedStrategyComposite; -import org.eclipse.jst.jsf.designtime.internal.view.model.ITagRegistry; -import org.eclipse.jst.jsf.designtime.internal.view.model.TagRegistryFactory.TagRegistryFactoryException; - -/** - * Employs a policy-based strategy to construct a TagRegistry for a particular - * content-type in a particular project. - * - * @author cbateman - * - */ -public final class CompositeTagRegistryFactory -{ - private static CompositeTagRegistryFactory INSTANCE; - - private static ITagRegistryFactoryProvider TEST_PROVIDER; - /** - * For JUNIT TEST ONLY!!!!! - * @param factoryProvider - */ - public synchronized void setTestInjectedProvider(final ITagRegistryFactoryProvider factoryProvider) - { - TEST_PROVIDER = factoryProvider; - // TODO: this is risky - _cachedExtensionsByType.clear(); - } - - /** - * @return the single instance of the registry factory - */ - public static synchronized CompositeTagRegistryFactory getInstance() - { - if (INSTANCE == null) - { - INSTANCE = new CompositeTagRegistryFactory(); - } - return INSTANCE; - } - - private final Map<TagRegistryIdentifier, Set<ITagRegistryFactoryInfo>> _cachedExtensionsByType = - new HashMap<TagRegistryIdentifier, Set<ITagRegistryFactoryInfo>>(4); - - private CompositeTagRegistryFactory() - { - // singleton: no external instantiation - } - - - /** - * @param id - * @return a tag registry for the id or null if there isn't one. - */ - public final ITagRegistry getRegistry(final TagRegistryIdentifier id) - { - final Set<ITagRegistryFactoryInfo> handlers = getAllTagRegistryFactories(); - - final Set<ITagRegistryFactoryInfo> matchingHandlers = findMatchingExtensions( - id, handlers); - - if (matchingHandlers.size() > 0) - { - // optimize: if there is only one handler, no need for strategy - if (matchingHandlers.size() == 1) - { - try - { - return matchingHandlers.iterator().next().getTagRegistryFactory() - .createTagRegistry(id.getProject()); - } - catch (TagRegistryFactoryException e) - { - JSFCorePlugin.log(e, "While trying to acquire a registry"); //$NON-NLS-1$ - } - } - else - { - // for now, we will order by the canonical name of the extension - // id in ascending order. Later, we may make this preference - // based. - final TagRegistrySelectionStrategy selectionStrategy = new TagRegistrySelectionStrategy( - new CanonicallyOrderedIteratorPolicy<String>()); - - for (final Iterator<ITagRegistryFactoryInfo> it = matchingHandlers - .iterator(); it.hasNext();) - { - selectionStrategy.addStrategy(it.next().getTagRegistryFactory()); - } - return selectionStrategy.perform(id.getProject()); - } - } - - return null; - } - - /** - * @return get all tag registry factories - */ - public Set<ITagRegistryFactoryInfo> getAllTagRegistryFactories() - { - List<String> selectionOrder = new ArrayList<String>(); - selectionOrder.add("testInjection"); //$NON-NLS-1$ - selectionOrder.add("extensionPointInjection"); //$NON-NLS-1$ - selectionOrder.add("platformDefault"); //$NON-NLS-1$ - - IdentifierOrderedIteratorPolicy<String> policy = new IdentifierOrderedIteratorPolicy<String>(selectionOrder); - // ignore iterator values that don't exist in the list of possible selections. - policy.setExcludeNonExplicitValues(true); - final TagRegistryFactoryProviderSelectionStrategy providerSelector - = new TagRegistryFactoryProviderSelectionStrategy(policy); - providerSelector.addStrategy( - new AbstractIdentifiableStrategy<IProject, ITagRegistryFactoryProvider, String>("testInjection", "FIXME: not for display", null) //$NON-NLS-1$ //$NON-NLS-2$ - { - @Override - public ITagRegistryFactoryProvider perform(IProject input) - throws Exception - { - ITagRegistryFactoryProvider injectedProvider = null; - synchronized(CompositeTagRegistryFactory.class) - { - injectedProvider = TEST_PROVIDER; - } - if (injectedProvider != null) - { - final ITagRegistryFactoryProvider useMe = injectedProvider; - return new AbstractTagRegistryFactoryProvider() - { - @Override - public Set<ITagRegistryFactoryInfo> getTagRegistryFactories() - { - return useMe.getTagRegistryFactories(); - } - }; - } - return null; - } - }); - providerSelector.addStrategy( - new AbstractIdentifiableStrategy<IProject, ITagRegistryFactoryProvider, String>("platformDefault", "FIXME: not for display", null) //$NON-NLS-1$ //$NON-NLS-2$ - { - @Override - public ITagRegistryFactoryProvider perform(IProject input) - throws Exception - { - return new AbstractTagRegistryFactoryProvider() - { - @Override - public Set<ITagRegistryFactoryInfo> getTagRegistryFactories() - { - return TagLibraryRegistryLoader.getAllHandlers(); - } - }; - } - }); - - ITagRegistryFactoryProvider provider = providerSelector.perform(null); - if (provider != null) - { - return provider.getTagRegistryFactories(); - } - return Collections.emptySet(); - } - - private Set<ITagRegistryFactoryInfo> findMatchingExtensions( - TagRegistryIdentifier id, Set<ITagRegistryFactoryInfo> handlers) - { - Set<ITagRegistryFactoryInfo> matching = _cachedExtensionsByType.get(id); - - if (matching == null) - { - matching = new HashSet<ITagRegistryFactoryInfo>(4); - - for (final ITagRegistryFactoryInfo handler : handlers) - { - if (handler.getContentTypes().contains(id.getContentType()) - && handler.getTagRegistryFactory().projectIsValid(id.getProject())) - { - matching.add(handler); - } - } - - // if there is nothing matching, just store the empty set and - // discard the extra memory - if (matching.size() > 0) - { - _cachedExtensionsByType.put(id, matching); - } - else - { - _cachedExtensionsByType.put(id, Collections.EMPTY_SET); - } - } - return matching; - } - - /** - * Identifies a content type/project context in which to request a tag - * registry. - * - * @author cbateman - * - */ - public final static class TagRegistryIdentifier - { - private final IProject _project; - private final IContentType _contentType; - - /** - * @param project - * @param contentType - */ - public TagRegistryIdentifier(final IProject project, - final IContentType contentType) - { - _project = project; - _contentType = contentType; - } - - /** - * @return project - */ - public IProject getProject() - { - return _project; - } - - /** - * @return content type - */ - public IContentType getContentType() - { - return _contentType; - } - - public boolean equals(final Object o) { - if (o instanceof TagRegistryIdentifier) { - final TagRegistryIdentifier other = (TagRegistryIdentifier)o; - final int otherProjectHash = other.getProject() != null ? other.getProject().hashCode() : 0; - final int thisProjectHash = getProject() != null ? getProject().hashCode() : 0; - if (otherProjectHash == thisProjectHash && - other.getContentType().equals(this.getContentType())) - return true; - } - return false; - } - - public int hashCode() { - return (getProject() != null ? getProject().hashCode() : 0) + 7*_contentType.hashCode(); - } - - } - - private static class TagRegistrySelectionStrategy - extends - IteratorPolicyBasedStrategyComposite<IProject, ITagRegistry, ITagRegistry, String, IIdentifiableStrategy<IProject, ITagRegistry, String>> - { - private static final ITagRegistry NO_RESULT = null; - - protected TagRegistrySelectionStrategy(IIteratorPolicy<String> policy) - { - super(policy); - } - - @Override - public ITagRegistry getNoResult() - { - return NO_RESULT; - } - } - - private static class TagRegistryFactoryProviderSelectionStrategy - extends - IteratorPolicyBasedStrategyComposite<IProject, ITagRegistryFactoryProvider, ITagRegistryFactoryProvider, String, IIdentifiableStrategy<IProject, ITagRegistryFactoryProvider, String>> - { - protected TagRegistryFactoryProviderSelectionStrategy( - IIteratorPolicy<String> policy) - { - super(policy); - } - - private static final ITagRegistryFactoryProvider NO_RESULT = null; - - @Override - public ITagRegistryFactoryProvider getNoResult() - { - return NO_RESULT; - } - } -} |