diff options
Diffstat (limited to 'sca-java-1.x/tags/java-M1-20060522/java/sca/containers/container.rhino/src/main/java/org/apache/tuscany/container/rhino/loader/JavaScriptImplementationLoader.java')
-rw-r--r-- | sca-java-1.x/tags/java-M1-20060522/java/sca/containers/container.rhino/src/main/java/org/apache/tuscany/container/rhino/loader/JavaScriptImplementationLoader.java | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/java-M1-20060522/java/sca/containers/container.rhino/src/main/java/org/apache/tuscany/container/rhino/loader/JavaScriptImplementationLoader.java b/sca-java-1.x/tags/java-M1-20060522/java/sca/containers/container.rhino/src/main/java/org/apache/tuscany/container/rhino/loader/JavaScriptImplementationLoader.java new file mode 100644 index 0000000000..e28776049c --- /dev/null +++ b/sca-java-1.x/tags/java-M1-20060522/java/sca/containers/container.rhino/src/main/java/org/apache/tuscany/container/rhino/loader/JavaScriptImplementationLoader.java @@ -0,0 +1,168 @@ +/** + * + * 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.container.rhino.loader; + +import java.io.IOException; +import java.io.InputStream; +import java.net.URL; + +import javax.xml.namespace.QName; +import javax.xml.stream.XMLInputFactory; +import javax.xml.stream.XMLStreamException; +import javax.xml.stream.XMLStreamReader; + +import org.apache.tuscany.common.resource.ResourceLoader; +import org.apache.tuscany.container.rhino.assembly.JavaScriptImplementation; +import org.apache.tuscany.core.config.ConfigurationLoadException; +import org.apache.tuscany.core.config.InvalidRootElementException; +import org.apache.tuscany.core.config.MissingResourceException; +import org.apache.tuscany.core.config.SidefileLoadException; +import org.apache.tuscany.core.loader.LoaderContext; +import org.apache.tuscany.core.loader.StAXElementLoader; +import org.apache.tuscany.core.loader.StAXLoaderRegistry; +import org.apache.tuscany.core.loader.assembly.AssemblyConstants; +import org.apache.tuscany.core.system.annotation.Autowire; +import org.apache.tuscany.model.assembly.ComponentType; +import org.osoa.sca.annotations.Destroy; +import org.osoa.sca.annotations.Init; +import org.osoa.sca.annotations.Scope; + +/** + * @version $Rev$ $Date$ + */ +@Scope("MODULE") +public class JavaScriptImplementationLoader implements StAXElementLoader<JavaScriptImplementation> { + + public static final QName IMPLEMENTATION_JS = new QName("http://org.apache.tuscany/xmlns/js/0.9", "implementation.js"); + + protected StAXLoaderRegistry registry; + + private XMLInputFactory xmlFactory; + + public JavaScriptImplementationLoader() { + // todo make this a reference to a system service + xmlFactory = XMLInputFactory.newInstance(); + } + + @Autowire + public void setRegistry(StAXLoaderRegistry registry) { + this.registry = registry; + } + + @Init(eager = true) + public void start() { + registry.registerLoader(IMPLEMENTATION_JS, this); + } + + @Destroy + public void stop() { + registry.unregisterLoader(IMPLEMENTATION_JS, this); + } + + public JavaScriptImplementation load(XMLStreamReader reader, LoaderContext loaderContext) throws XMLStreamException, ConfigurationLoadException { + String scriptFile = reader.getAttributeValue(null, "scriptFile"); + String script = loadScript(scriptFile, loaderContext.getResourceLoader()); + ComponentType componentType = loadComponentType(scriptFile, loaderContext); + + JavaScriptImplementation jsImpl = new JavaScriptImplementation(); + jsImpl.setComponentType(componentType); + jsImpl.setScriptFile(scriptFile); + jsImpl.setScript(script); + jsImpl.setResourceLoader(loaderContext.getResourceLoader()); + jsImpl.setTypeHelper(registry.getContext().getTypeHelper()); + return jsImpl; + } + + protected String loadScript(String scriptFile, ResourceLoader resourceLoader) throws ConfigurationLoadException { + URL url = resourceLoader.getResource(scriptFile); + if (url == null) { + throw new ConfigurationLoadException(scriptFile); + } + InputStream inputStream; + try { + inputStream = url.openStream(); + } catch (IOException e) { + throw new ConfigurationLoadException(scriptFile, e); + } + try { + StringBuilder sb = new StringBuilder(1024); + int n; + while ((n = inputStream.read()) != -1) { + sb.append((char) n); + } + return sb.toString(); + } catch (IOException e) { + throw new ConfigurationLoadException(scriptFile, e); + } finally { + try { + inputStream.close(); + } catch (IOException e) { + // ignore + } + } + } + + protected ComponentType loadComponentType(String scriptFile, LoaderContext loaderContext) throws SidefileLoadException, MissingResourceException{ + String sidefile = scriptFile.substring(0, scriptFile.lastIndexOf('.')) + ".componentType"; + URL componentTypeFile = loaderContext.getResourceLoader().getResource(sidefile); + if (componentTypeFile == null) { + throw new MissingResourceException(sidefile); + } + + try { + XMLStreamReader reader; + InputStream is; + is = componentTypeFile.openStream(); + try { + reader = xmlFactory.createXMLStreamReader(is); + try { + reader.nextTag(); + if (!AssemblyConstants.COMPONENT_TYPE.equals(reader.getName())) { + InvalidRootElementException e = new InvalidRootElementException(AssemblyConstants.COMPONENT_TYPE, reader.getName()); + e.setResourceURI(componentTypeFile.toString()); + throw e; + } + return (ComponentType) registry.load(reader, loaderContext); + } finally { + try { + reader.close(); + } catch (XMLStreamException e) { + // ignore + } + } + } finally { + try { + is.close(); + } catch (IOException e) { + // ignore + } + } + } catch (IOException e) { + SidefileLoadException sfe = new SidefileLoadException(e.getMessage()); + sfe.setResourceURI(componentTypeFile.toString()); + throw sfe; + } catch (XMLStreamException e) { + SidefileLoadException sfe = new SidefileLoadException(e.getMessage()); + sfe.setResourceURI(componentTypeFile.toString()); + throw sfe; + } catch (ConfigurationLoadException e) { + SidefileLoadException sfe = new SidefileLoadException(e.getMessage()); + sfe.setResourceURI(componentTypeFile.toString()); + throw sfe; + } + } +} |