diff options
Diffstat (limited to 'bundles/org.eclipse.wst.xml.core/src-contentmodel/org/eclipse/wst/xml/core/internal/contentmodel/modelqueryimpl/GlobalCMDocumentCache.java')
| -rw-r--r-- | bundles/org.eclipse.wst.xml.core/src-contentmodel/org/eclipse/wst/xml/core/internal/contentmodel/modelqueryimpl/GlobalCMDocumentCache.java | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/bundles/org.eclipse.wst.xml.core/src-contentmodel/org/eclipse/wst/xml/core/internal/contentmodel/modelqueryimpl/GlobalCMDocumentCache.java b/bundles/org.eclipse.wst.xml.core/src-contentmodel/org/eclipse/wst/xml/core/internal/contentmodel/modelqueryimpl/GlobalCMDocumentCache.java deleted file mode 100644 index ca981f15dd..0000000000 --- a/bundles/org.eclipse.wst.xml.core/src-contentmodel/org/eclipse/wst/xml/core/internal/contentmodel/modelqueryimpl/GlobalCMDocumentCache.java +++ /dev/null @@ -1,121 +0,0 @@ -/******************************************************************************* - * Copyright (c) 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.wst.xml.core.internal.contentmodel.modelqueryimpl; - -import java.lang.ref.SoftReference; -import java.util.HashMap; -import java.util.Map; - -import org.eclipse.wst.sse.core.internal.util.AbstractMemoryListener; -import org.eclipse.wst.xml.core.internal.Logger; -import org.eclipse.wst.xml.core.internal.XMLCorePlugin; -import org.eclipse.wst.xml.core.internal.catalog.provisional.ICatalog; -import org.eclipse.wst.xml.core.internal.catalog.provisional.ICatalogEntry; -import org.eclipse.wst.xml.core.internal.catalog.provisional.INextCatalog; -import org.eclipse.wst.xml.core.internal.contentmodel.CMDocument; -import org.osgi.service.event.Event; -import org.osgi.service.event.EventConstants; - -public class GlobalCMDocumentCache { - - private static GlobalCMDocumentCache globalDocumentCache = new GlobalCMDocumentCache(); - private Map systemCatalogEntries = getSystemCatalogEntries(); - private MemoryListener memoryListener; - private final static String CATEGORY = "CMDocumentGlobalCache"; //$NON-NLS-1$ - - protected GlobalCMDocumentCache() { - Logger.trace(CATEGORY, "Cache initialized"); //$NON-NLS-1$ - memoryListener = new MemoryListener(); - memoryListener.connect(); - } - - public static GlobalCMDocumentCache getInstance() { - return globalDocumentCache; - } - - public synchronized GlobalCacheQueryResponse getCMDocument(String grammarURI) { - //Logger.trace(CATEGORY, "Query for: " + grammarURI); //$NON-NLS-1$ - Object systemCatalogEntry = systemCatalogEntries.get(grammarURI); - if(systemCatalogEntry != null) { - //Logger.trace(CATEGORY, "Document " + grammarURI + " is in system catalog"); //$NON-NLS-1$ //$NON-NLS-2$ - Object object = ((SoftReference)systemCatalogEntry).get(); - if(object != null) { - //Logger.trace(CATEGORY, "Document " + grammarURI + "is in cache, returning cached version"); //$NON-NLS-1$ //$NON-NLS-2$ - return new GlobalCacheQueryResponse((CMDocument)object, true); - } else { - //Logger.trace(CATEGORY, "Document " + grammarURI + " is not in cache"); //$NON-NLS-1$ //$NON-NLS-2$ - return new GlobalCacheQueryResponse(null, true); - } - } - //Logger.trace(CATEGORY, "Document " + grammarURI + " is not in system catalog, not cached"); //$NON-NLS-1$ //$NON-NLS-2$ - return new GlobalCacheQueryResponse(null, false); - } - - public synchronized void putCMDocument(String grammarURI, CMDocument cmDocument) { - //Logger.trace(CATEGORY, "Document: " + grammarURI + " added to global cache"); //$NON-NLS-1$ //$NON-NLS-2$ - systemCatalogEntries.put(grammarURI, new SoftReference(cmDocument)); - } - - private synchronized static HashMap getSystemCatalogEntries(){ - HashMap systemCatalogURIs = new HashMap(); - ICatalog systemCatalog = null; - ICatalog defaultCatalog = XMLCorePlugin.getDefault().getDefaultXMLCatalog(); - INextCatalog[] nextCatalogs = defaultCatalog.getNextCatalogs(); - for (int i = 0; i < nextCatalogs.length; i++) { - INextCatalog catalog = nextCatalogs[i]; - ICatalog referencedCatalog = catalog.getReferencedCatalog(); - if (referencedCatalog != null) { - if (XMLCorePlugin.SYSTEM_CATALOG_ID.equals(referencedCatalog.getId())) { - systemCatalog = referencedCatalog; - } - } - } - if(systemCatalog != null) { - ICatalogEntry[] catalogEntries = systemCatalog.getCatalogEntries(); - for (int i = 0; i < catalogEntries.length; i++) { - systemCatalogURIs.put(catalogEntries[i].getURI(), new SoftReference(null)); - } - } - return systemCatalogURIs; - } - - public class GlobalCacheQueryResponse { - - private CMDocument cachedDocument; - private boolean documentCacheable; - - public GlobalCacheQueryResponse(CMDocument cachedCMDocument, boolean documentCacheable) { - this.cachedDocument = cachedCMDocument; - this.documentCacheable = documentCacheable; - } - - public CMDocument getCachedCMDocument() { - return cachedDocument; - } - - public boolean isDocumentCacheable() { - return documentCacheable; - } - - } - - private class MemoryListener extends AbstractMemoryListener { - protected void handleMemoryEvent(Event event) { - Object topic = event.getProperty(EventConstants.EVENT_TOPIC); - if(SEV_SERIOUS.equals(topic) || SEV_CRITICAL.equals(topic)) { - Logger.trace(CATEGORY, "Serious severity low memory event received, flushing global CMDocument cache."); //$NON-NLS-1$ - systemCatalogEntries = getSystemCatalogEntries(); - } - } - } - -} |