diff options
Diffstat (limited to 'sca-java-1.x/tags/java-M1-20060522/java/sca/core/src/main/java/org/apache/tuscany/core/loader/impl/StAXLoaderRegistryImpl.java')
-rw-r--r-- | sca-java-1.x/tags/java-M1-20060522/java/sca/core/src/main/java/org/apache/tuscany/core/loader/impl/StAXLoaderRegistryImpl.java | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/java-M1-20060522/java/sca/core/src/main/java/org/apache/tuscany/core/loader/impl/StAXLoaderRegistryImpl.java b/sca-java-1.x/tags/java-M1-20060522/java/sca/core/src/main/java/org/apache/tuscany/core/loader/impl/StAXLoaderRegistryImpl.java new file mode 100644 index 0000000000..1e9e8ec8fb --- /dev/null +++ b/sca-java-1.x/tags/java-M1-20060522/java/sca/core/src/main/java/org/apache/tuscany/core/loader/impl/StAXLoaderRegistryImpl.java @@ -0,0 +1,105 @@ +/** + * + * Copyright 2005 The Apache Software Foundation + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.apache.tuscany.core.loader.impl; + +import org.apache.tuscany.core.config.ConfigurationLoadException; +import org.apache.tuscany.core.loader.StAXElementLoader; +import org.apache.tuscany.core.loader.StAXLoaderRegistry; +import org.apache.tuscany.core.loader.LoaderContext; +import org.apache.tuscany.model.assembly.AssemblyContext; +import org.apache.tuscany.model.assembly.AssemblyObject; +import org.osoa.sca.annotations.Scope; + +import javax.xml.namespace.QName; +import javax.xml.stream.XMLStreamException; +import javax.xml.stream.XMLStreamReader; +import java.util.HashMap; +import java.util.Map; + +/** + * @version $Rev$ $Date$ + */ +@Scope("MODULE") +public class StAXLoaderRegistryImpl implements StAXLoaderRegistry { + private final Map<QName, StAXElementLoader<? extends AssemblyObject>> loaders = new HashMap<QName, StAXElementLoader<? extends AssemblyObject>>(); + + private Monitor monitor; + + @org.apache.tuscany.core.system.annotation.Monitor + public void setMonitor(Monitor monitor) { + this.monitor = monitor; + } + + public <T extends AssemblyObject> void registerLoader(QName element, StAXElementLoader<T> loader) { + monitor.registeringLoader(element); + loaders.put(element, loader); + } + + public <T extends AssemblyObject> void unregisterLoader(QName element, StAXElementLoader<T> loader) { + monitor.unregisteringLoader(element); + loaders.remove(element); + } + + public AssemblyObject load(XMLStreamReader reader, LoaderContext loaderContext) throws XMLStreamException, ConfigurationLoadException { + QName name = reader.getName(); + monitor.elementLoad(name); + StAXElementLoader<? extends AssemblyObject> loader = loaders.get(name); + if (loader == null) { + ConfigurationLoadException e = new ConfigurationLoadException("Unrecognized element"); + e.setIdentifier(name.toString()); + throw e; + } else { + return loader.load(reader, loaderContext); + } + } + + + private final ThreadLocal<AssemblyContext> modelContext = new ThreadLocal<AssemblyContext>(); + + @Deprecated + public AssemblyContext getContext() { + return modelContext.get(); + } + + @Deprecated + public void setContext(AssemblyContext context) { + modelContext.set(context); + } + + public static interface Monitor { + /** + * Event emitted when a StAX element loader is registered. + * + * @param xmlType the QName of the element the loader will handle + */ + void registeringLoader(QName xmlType); + + /** + * Event emitted when a StAX element loader is unregistered. + * + * @param xmlType the QName of the element the loader will handle + */ + void unregisteringLoader(QName xmlType); + + /** + * Event emitted when a request is made to load an element. + * + * @param xmlType the QName of the element that should be loaded + */ + void elementLoad(QName xmlType); + } +} |