Author: dennyxu Date: 2009-07-20 03:06:28 -0400 (Mon, 20 Jul 2009) New Revision: 16669 Added: trunk/bpel/plugins/org.eclipse.bpel.common.model/src/org/eclipse/bpel/fnmeta/ClasspathFunctionRegistryLoader.java trunk/bpel/plugins/org.eclipse.bpel.common.model/src/org/eclipse/bpel/fnmeta/FunctionLibrary.java trunk/bpel/plugins/org.eclipse.bpel.common.model/src/org/eclipse/bpel/fnmeta/FunctionRegistry.java trunk/bpel/plugins/org.eclipse.bpel.common.model/src/org/eclipse/bpel/fnmeta/IFunctionRegistryLoader.java Log: Added: trunk/bpel/plugins/org.eclipse.bpel.common.model/src/org/eclipse/bpel/fnmeta/ClasspathFunctionRegistryLoader.java =================================================================== --- trunk/bpel/plugins/org.eclipse.bpel.common.model/src/org/eclipse/bpel/fnmeta/ClasspathFunctionRegistryLoader.java (rev 0) +++ trunk/bpel/plugins/org.eclipse.bpel.common.model/src/org/eclipse/bpel/fnmeta/ClasspathFunctionRegistryLoader.java 2009-07-20 07:06:28 UTC (rev 16669) @@ -0,0 +1,70 @@ +/******************************************************************************* + * Copyright (c) 2006 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.bpel.fnmeta; + +import java.net.URL; +import java.util.Enumeration; + +import org.eclipse.bpel.common.BPELResourceSet; +import org.eclipse.bpel.fnmeta.model.Registry; +import org.eclipse.emf.common.util.URI; +import org.eclipse.emf.ecore.resource.Resource; +import org.eclipse.emf.ecore.resource.ResourceSet; + +/** + * @author Michal Chmielewski (michal.chmielewski(a)oracle.com) + * @date Aug 4, 2008 + * + */ +public class ClasspathFunctionRegistryLoader implements IFunctionRegistryLoader { + + ClassLoader fLoader = null; + ResourceSet fResourceSet = null; + + /** + * @param obj + */ + public ClasspathFunctionRegistryLoader (ResourceSet obj) { + fLoader = obj.getClass().getClassLoader(); + fResourceSet = obj; + } + + /** (non-Javadoc) + * @see org.eclipse.bpel.fnmeta.IFunctionRegistryLoader#load(org.eclipse.bpel.fnmeta.FunctionRegistry) + */ + + @SuppressWarnings("nls") + public void load (FunctionRegistry registry) { + + Enumeration<URL> list = null; + + try { + list = fLoader.getResources("fn.fnmeta"); + while (list.hasMoreElements()) { + + URL url = list.nextElement(); + URI uri = URI.createURI( url.toExternalForm() ) ; + + Resource resource = fResourceSet.getResource(uri, true); + + if (resource.getContents().size() > 0) { + Registry r = (Registry) resource.getContents().get(0); + registry.add( r.getFunctions() ); + } + } + + } catch (Exception ex) { + ex.printStackTrace(System.err); + } + + } + +} Added: trunk/bpel/plugins/org.eclipse.bpel.common.model/src/org/eclipse/bpel/fnmeta/FunctionLibrary.java =================================================================== --- trunk/bpel/plugins/org.eclipse.bpel.common.model/src/org/eclipse/bpel/fnmeta/FunctionLibrary.java (rev 0) +++ trunk/bpel/plugins/org.eclipse.bpel.common.model/src/org/eclipse/bpel/fnmeta/FunctionLibrary.java 2009-07-20 07:06:28 UTC (rev 16669) @@ -0,0 +1,110 @@ +/******************************************************************************* + * Copyright (c) 2006 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.bpel.fnmeta; + +import java.util.ArrayList; +import java.util.HashMap; +import java.util.List; +import java.util.Map; + +/** + * Function Library collects all the function registries for the given + * language in the BPEL context. + * + * Imagine scripting language "foobar". There may be several registries contributing functions + * to the language "foobar" library. The library is the single lookup point for scripting language + * and the registry encompasses all the functions for the given language. + * + * @author Michal Chmielewski (michal.chmielewski(a)oracle.com) + * @date Aug 4, 2008 + * + */ + +public class FunctionLibrary { + + /** + * + */ + static public FunctionLibrary INSTANCE = new FunctionLibrary(); + + /** + * Index of all registries, by scripting language namespace name. + */ + Map<String,FunctionRegistry> fRegistries = new HashMap<String,FunctionRegistry>(); + + /** + * List of registered loaders for the function library. This way we can do late loading + * of registry information, basically delaying it until needed. + */ + List<IFunctionRegistryLoader> fLoaders = new ArrayList<IFunctionRegistryLoader>(); + + + /** + * + * @param language the language. + * @return the function registry for the given language. + */ + + public FunctionRegistry getRegistryForLanguage ( String language ) { + + FunctionRegistry registry = fRegistries.get(language); + if (registry != null) { + return registry; + } + + synchronized (fRegistries) { + registry = fRegistries.get(language); + if (registry != null) { + return registry; + } + + registry = new FunctionRegistry(language); + + for(IFunctionRegistryLoader loader : fLoaders) { + loader.load( registry ); + } + + fRegistries.put(language, registry); + } + return registry; + } + + + /** + * @param registry + */ + + public void add (FunctionRegistry registry) { + fRegistries.put(registry.getLanguageNS(), registry); + } + + /** + * @param loader + */ + + public void registerLoader ( IFunctionRegistryLoader loader ) { + if (fLoaders.contains(loader)) { + return ; + } + fLoaders.add ( loader ); + } + + + /** + * @param loader + * + */ + public void unregisterLoader( IFunctionRegistryLoader loader ) { + fLoaders.remove(loader); + } + + +} Added: trunk/bpel/plugins/org.eclipse.bpel.common.model/src/org/eclipse/bpel/fnmeta/FunctionRegistry.java =================================================================== --- trunk/bpel/plugins/org.eclipse.bpel.common.model/src/org/eclipse/bpel/fnmeta/FunctionRegistry.java (rev 0) +++ trunk/bpel/plugins/org.eclipse.bpel.common.model/src/org/eclipse/bpel/fnmeta/FunctionRegistry.java 2009-07-20 07:06:28 UTC (rev 16669) @@ -0,0 +1,110 @@ +/******************************************************************************* + * Copyright (c) 2006 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.bpel.fnmeta; + +import java.util.ArrayList; +import java.util.Collection; +import java.util.Collections; +import java.util.HashMap; +import java.util.List; +import java.util.Map; + +import org.eclipse.bpel.fnmeta.model.Function; + +/** + * @author Michal Chmielewski (michal.chmielewski(a)oracle.com) + * @date Aug 3, 2007 + */ + +@SuppressWarnings("nls") +public class FunctionRegistry { + + Map<String,Function> fRegistryIndex = new HashMap<String,Function>(); + + String fLanguageNamespace ; + + /** + * @param languageNamespace + */ + + public FunctionRegistry ( String languageNamespace ) { + fLanguageNamespace = languageNamespace; + } + + /** + * + * @return the registry for our scripting language + */ + + public Collection<Function> getRegistry () { + return Collections.unmodifiableCollection( fRegistryIndex.values() ); + } + + + + + /** + * + * @param ns + * @param name + * @return the function for the given namespace and name + * + */ + + public Function lookupFunction (String ns, String name) { + return fRegistryIndex.get( key(ns,name) ); + } + + + /** + * @param list + */ + + public void add (List<Function> list) { + + for ( Function fn : list ) { + add(fn); + } + } + + /** + * @param fn + */ + + public void add (Function fn ) { + String aKey = key(fn); + Function previous = fRegistryIndex.get( aKey ); + if (previous != null) { + // overwrite ? nope. + return ; + } + fRegistryIndex.put(aKey , fn); + } + + + String key (Function fn) { + return key(fn.getNamespace(), fn.getName()); + } + + String key (String ns, String name) { + StringBuilder sb = new StringBuilder(); + return sb.append(ns).append(";").append(name).toString() ; + } + + + /** + * @return the language namespace for this function registry + */ + public String getLanguageNS () { + return fLanguageNamespace; + } + +} Added: trunk/bpel/plugins/org.eclipse.bpel.common.model/src/org/eclipse/bpel/fnmeta/IFunctionRegistryLoader.java =================================================================== --- trunk/bpel/plugins/org.eclipse.bpel.common.model/src/org/eclipse/bpel/fnmeta/IFunctionRegistryLoader.java (rev 0) +++ trunk/bpel/plugins/org.eclipse.bpel.common.model/src/org/eclipse/bpel/fnmeta/IFunctionRegistryLoader.java 2009-07-20 07:06:28 UTC (rev 16669) @@ -0,0 +1,26 @@ +/******************************************************************************* + * Copyright (c) 2006 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.bpel.fnmeta; + +/** + * @author Michal Chmielewski (michal.chmielewski(a)oracle.com) + * @date Aug 4, 2008 + * + */ +public interface IFunctionRegistryLoader { + + /** + * @param registry + */ + + void load ( FunctionRegistry registry ); + +}