diff options
Diffstat (limited to 'tags/java/sca/1.5.1/modules/implementation-xquery/src/main/java/org/apache/tuscany/sca/implementation/xquery/xml')
2 files changed, 487 insertions, 0 deletions
diff --git a/tags/java/sca/1.5.1/modules/implementation-xquery/src/main/java/org/apache/tuscany/sca/implementation/xquery/xml/XQueryImplementationProcessor.java b/tags/java/sca/1.5.1/modules/implementation-xquery/src/main/java/org/apache/tuscany/sca/implementation/xquery/xml/XQueryImplementationProcessor.java new file mode 100644 index 0000000000..12c478daea --- /dev/null +++ b/tags/java/sca/1.5.1/modules/implementation-xquery/src/main/java/org/apache/tuscany/sca/implementation/xquery/xml/XQueryImplementationProcessor.java @@ -0,0 +1,159 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you 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.sca.implementation.xquery.xml; + +import static javax.xml.stream.XMLStreamConstants.END_ELEMENT; + +import javax.xml.namespace.QName; +import javax.xml.stream.XMLStreamException; +import javax.xml.stream.XMLStreamReader; +import javax.xml.stream.XMLStreamWriter; + +import org.apache.tuscany.sca.assembly.AssemblyFactory; +import org.apache.tuscany.sca.assembly.xml.Constants; +import org.apache.tuscany.sca.contribution.Artifact; +import org.apache.tuscany.sca.contribution.ContributionFactory; +import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint; +import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor; +import org.apache.tuscany.sca.contribution.resolver.ModelResolver; +import org.apache.tuscany.sca.contribution.service.ContributionReadException; +import org.apache.tuscany.sca.contribution.service.ContributionResolveException; +import org.apache.tuscany.sca.contribution.service.ContributionWriteException; +import org.apache.tuscany.sca.implementation.xquery.XQueryImplementation; +import org.apache.tuscany.sca.implementation.xquery.XQueryImplementationFactory; +import org.apache.tuscany.sca.interfacedef.java.JavaInterfaceFactory; +import org.apache.tuscany.sca.monitor.Monitor; +import org.apache.tuscany.sca.monitor.Problem; +import org.apache.tuscany.sca.monitor.Problem.Severity; +import org.apache.tuscany.sca.monitor.impl.ProblemImpl; + +/** + * Processor for the XQuery implementation type artifact + * @version $Rev$ $Date$ + */ +public class XQueryImplementationProcessor implements StAXArtifactProcessor<XQueryImplementation> { + + private static final String LOCATION = "location"; + private static final String IMPLEMENTATION_XQUERY = "implementation.xquery"; + private static final QName IMPLEMENTATION_XQUERY_QNAME = + new QName(Constants.SCA10_TUSCANY_NS, IMPLEMENTATION_XQUERY); + + private AssemblyFactory assemblyFactory; + private JavaInterfaceFactory javaFactory; + private ContributionFactory contributionFactory; + private Monitor monitor; + + public XQueryImplementationProcessor(ModelFactoryExtensionPoint modelFactoryExtensionPoint, Monitor monitor) { + assemblyFactory = modelFactoryExtensionPoint.getFactory(AssemblyFactory.class); + javaFactory = modelFactoryExtensionPoint.getFactory(JavaInterfaceFactory.class); + contributionFactory = modelFactoryExtensionPoint.getFactory(ContributionFactory.class); + this.monitor = monitor; + } + + /** + * Report a error. + * + * @param problems + * @param message + * @param model + */ + private void error(String message, Object model, Object... messageParameters) { + if (monitor != null) { + Problem problem = new ProblemImpl(this.getClass().getName(), "impl-xquery-validation-messages", Severity.ERROR, model, message, (Object[])messageParameters); + monitor.problem(problem); + } + } + + public QName getArtifactType() { + return IMPLEMENTATION_XQUERY_QNAME; + } + + /** + * Reads from the stream and sets the location attribute of the implementation correspondingly + */ + public XQueryImplementation read(XMLStreamReader reader) + throws ContributionReadException, XMLStreamException { + + /* Create the XQuery implementation and set the location into it */ + XQueryImplementation xqueryImplementation = null; + + /* Read the location attribute for the XQuery implementation */ + String xqueryLocation = reader.getAttributeValue(null, LOCATION); + if (xqueryLocation != null) { + xqueryImplementation = XQueryImplementationFactory.INSTANCE.createXQueryImplementation(); + xqueryImplementation.setLocation(xqueryLocation); + xqueryImplementation.setUnresolved(true); + } else { + error("LocationAttributeMissing", reader); + //throw new ContributionReadException(MSG_LOCATION_MISSING); + } + + // Skip to end element + while (reader.hasNext()) { + if (reader.next() == END_ELEMENT && IMPLEMENTATION_XQUERY_QNAME.equals(reader.getName())) { + break; + } + } // end while + + return xqueryImplementation; + } + + public void write(XQueryImplementation xqueryImplementation, XMLStreamWriter writer) + throws ContributionWriteException, XMLStreamException { + + writer.writeStartElement(Constants.SCA10_TUSCANY_NS, IMPLEMENTATION_XQUERY); + if (xqueryImplementation.getLocation() != null) { + writer.writeAttribute(LOCATION, xqueryImplementation.getLocation()); + } + writer.writeEndElement(); + + } + + public Class<XQueryImplementation> getModelType() { + return XQueryImplementation.class; + } + + /** + * Resolves the implementation: its services and references, by invoking the XQuery + * introspector + */ + public void resolve(XQueryImplementation xqueryImplementation, ModelResolver resolver) + throws ContributionResolveException { + + if (xqueryImplementation != null) { + Artifact artifact = contributionFactory.createArtifact(); + artifact.setURI(xqueryImplementation.getLocation()); + artifact = resolver.resolveModel(Artifact.class, artifact); + if (artifact.getLocation() != null) { + xqueryImplementation.setLocationURL(artifact.getLocation()); + + XQueryIntrospector introspector = new XQueryIntrospector(assemblyFactory, javaFactory); + + boolean success = introspector.introspect(xqueryImplementation, resolver); + if (success) { + xqueryImplementation.setUnresolved(false); + } + } else { + error("CouldNotLocateFile", resolver, xqueryImplementation.getLocation()); + //throw new ContributionResolveException("Could not locate file: " + xqueryImplementation.getLocation()); + } + } + } + +} diff --git a/tags/java/sca/1.5.1/modules/implementation-xquery/src/main/java/org/apache/tuscany/sca/implementation/xquery/xml/XQueryIntrospector.java b/tags/java/sca/1.5.1/modules/implementation-xquery/src/main/java/org/apache/tuscany/sca/implementation/xquery/xml/XQueryIntrospector.java new file mode 100644 index 0000000000..d1e74dd40d --- /dev/null +++ b/tags/java/sca/1.5.1/modules/implementation-xquery/src/main/java/org/apache/tuscany/sca/implementation/xquery/xml/XQueryIntrospector.java @@ -0,0 +1,328 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you 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.sca.implementation.xquery.xml; + +import java.io.ByteArrayOutputStream; +import java.io.FileNotFoundException; +import java.io.IOException; +import java.io.InputStream; +import java.lang.reflect.Method; +import java.net.URL; +import java.util.Iterator; + +import javax.xml.namespace.QName; + +import net.sf.saxon.Configuration; +import net.sf.saxon.om.NamespaceResolver; +import net.sf.saxon.query.StaticQueryContext; +import net.sf.saxon.query.XQueryExpression; +import net.sf.saxon.trans.XPathException; + +import org.apache.tuscany.sca.assembly.AssemblyFactory; +import org.apache.tuscany.sca.assembly.Multiplicity; +import org.apache.tuscany.sca.assembly.Property; +import org.apache.tuscany.sca.assembly.Reference; +import org.apache.tuscany.sca.assembly.Service; +import org.apache.tuscany.sca.contribution.resolver.ClassReference; +import org.apache.tuscany.sca.contribution.resolver.ModelResolver; +import org.apache.tuscany.sca.contribution.service.ContributionResolveException; +import org.apache.tuscany.sca.implementation.xquery.XQueryImplementation; +import org.apache.tuscany.sca.interfacedef.InvalidInterfaceException; +import org.apache.tuscany.sca.interfacedef.java.JavaInterface; +import org.apache.tuscany.sca.interfacedef.java.JavaInterfaceContract; +import org.apache.tuscany.sca.interfacedef.java.JavaInterfaceFactory; +import org.apache.tuscany.sca.interfacedef.util.JavaXMLMapper; + +/** + * This class introspects an XQuery file and extracts out of it + * all implemented service, references and properties + * It also creates expression extensions for each operation + * in the implemented services + * @version $Rev$ $Date$ + */ +public class XQueryIntrospector { + + private static final String SCA_SERVICE_PREFIX = "scaservice:java/"; + private static final String SCA_REFERENCE_PREFIX = "scareference:java/"; + private static final String SCA_PROPERTY_JAVA_PREFIX = "scaproperty:java/"; + private static final String SCA_PROPERTY_XML_PREFIX = "scaproperty:xml/"; + + private AssemblyFactory assemblyFactory; + private JavaInterfaceFactory javaFactory; + + public XQueryIntrospector(AssemblyFactory assemblyFactory, JavaInterfaceFactory javaFactory) { + super(); + this.assemblyFactory = assemblyFactory; + this.javaFactory = javaFactory; + } + + public boolean introspect(XQueryImplementation xqueryImplementation, ModelResolver resolver) throws ContributionResolveException { + + String xqExpression = null; + try { + URL url = new URL(xqueryImplementation.getLocationURL()); + xqExpression = loadXQExpression(url); + } catch (FileNotFoundException e) { + throw new ContributionResolveException(e); + } catch (IOException e) { + throw new ContributionResolveException(e); + } + + if (xqExpression == null) { + return false; + } + + xqueryImplementation.setXqExpression(xqExpression); + + xqExpression += "\r\n<dummy></dummy>"; + + Configuration config = new Configuration(); + StaticQueryContext sqc = new StaticQueryContext(config); + XQueryExpression exp = null; + try { + exp = sqc.compileQuery(xqExpression); + } catch (XPathException e) { + throw new ContributionResolveException(e); + } + + if (exp == null) { + return false; + } + xqueryImplementation.getCompiledExpressionsCache().put(xqExpression, exp); + + try { + introspectServicesAndReferences(xqueryImplementation, exp, resolver); + } catch (ClassNotFoundException e) { + throw new ContributionResolveException(e); + } catch (InvalidInterfaceException e) { + throw new ContributionResolveException(e); + } + + fillExpressionExtensions(xqueryImplementation); + + return true; + } + + /** + * Loads the XQuery expression from the location that is provided with the implementation + */ + private String loadXQExpression(URL locationURL) throws FileNotFoundException, IOException { + + InputStream xqResourceStream = locationURL.openStream(); + + if (xqResourceStream == null) { + return null; + } + + ByteArrayOutputStream baos = new ByteArrayOutputStream(); + int i = 0; + while ((i = xqResourceStream.read()) >= 0) { + baos.write(i); + } + xqResourceStream.close(); + baos.flush(); + baos.close(); + + String xqExpression = baos.toString(); + + return xqExpression; + } + + private Class<?> resolveClass(ModelResolver resolver, String className) throws ClassNotFoundException { + ClassReference classReference = new ClassReference(className); + classReference = resolver.resolveModel(ClassReference.class, classReference); + Class<?> javaClass = classReference.getJavaClass(); + if (javaClass == null) { + throw new ClassNotFoundException(className); + } else { + return javaClass; + } + } + + /** + * From the compiled XQuery expression get all namespaces and see if they + * are services, references or properties declarations + */ + private void introspectServicesAndReferences(XQueryImplementation xqueryImplementation, XQueryExpression exp, ModelResolver resolver) + throws ClassNotFoundException, InvalidInterfaceException { + NamespaceResolver namespaceResolver = exp.getStaticContext().getNamespaceResolver(); + Iterator declaredPrefixesIterator = namespaceResolver.iteratePrefixes(); + while (declaredPrefixesIterator.hasNext()) { + String prefix = (String)declaredPrefixesIterator.next(); + String uri = namespaceResolver.getURIForPrefix(prefix, false); + if (uri.startsWith(SCA_SERVICE_PREFIX)) { + String serviceName = prefix; + String className = uri.substring(SCA_SERVICE_PREFIX.length()); + Class<?> interfaze = resolveClass(resolver, className); + Service theService = createService(interfaze, serviceName); + xqueryImplementation.getServices().add(theService); + } else if (uri.startsWith(SCA_REFERENCE_PREFIX)) { + String referenceName = prefix; + String className = uri.substring(SCA_REFERENCE_PREFIX.length()); + Class<?> interfaze = resolveClass(resolver, className); + Reference theReference = createReference(interfaze, referenceName); + xqueryImplementation.getReferences().add(theReference); + } else if (uri.startsWith(SCA_PROPERTY_JAVA_PREFIX)) { + String propertyName = prefix; + String className = uri.substring(SCA_PROPERTY_JAVA_PREFIX.length()); + Class<?> clazz = resolveClass(resolver, className); + QName xmlType = JavaXMLMapper.getXMLType(clazz); + Property theProperty = createProperty(xmlType, propertyName); + xqueryImplementation.getProperties().add(theProperty); + } else if (uri.startsWith(SCA_PROPERTY_XML_PREFIX)) { + String propertyName = prefix; + String namespaceAndLocalname = uri.substring(SCA_PROPERTY_XML_PREFIX.length()); + int localNameDelimiterPostition = namespaceAndLocalname.lastIndexOf(':'); + String localName = null; + String namespace = null; + if (localNameDelimiterPostition < 0) { + localName = namespaceAndLocalname; + namespace = ""; + } else { + namespace = namespaceAndLocalname.substring(0, localNameDelimiterPostition); + localName = namespaceAndLocalname.substring(localNameDelimiterPostition + 1); + } + QName xmlType = new QName(namespace, localName); + Property theProperty = createProperty(xmlType, propertyName); + xqueryImplementation.getProperties().add(theProperty); + } + } + } + + /** + * Creates a Service for the component type based on its name and Java interface + */ + private Service createService(Class<?> interfaze, String name) throws InvalidInterfaceException { + Service service = assemblyFactory.createService(); + JavaInterfaceContract interfaceContract = javaFactory.createJavaInterfaceContract(); + service.setInterfaceContract(interfaceContract); + + // Set the name for the service + service.setName(name); + + // Set the call interface and, if present, the callback interface + JavaInterface callInterface = null; + try { + callInterface = (JavaInterface) javaFactory.createJavaInterface(interfaze).clone(); + } catch (CloneNotSupportedException e) { + // Ignore + } + //setDataBindingForInterface(callInterface, DataObject.class.getName()); + service.getInterfaceContract().setInterface(callInterface); + if (callInterface.getCallbackClass() != null) { + JavaInterface callbackInterface = null; + try { + callbackInterface = (JavaInterface) javaFactory.createJavaInterface(callInterface.getCallbackClass()).clone(); + } catch (CloneNotSupportedException e) { + //Ignore + } + //setDataBindingForInterface(callbackInterface, DataObject.class.getName()); + service.getInterfaceContract().setCallbackInterface(callbackInterface); + } + return service; + } // end method createService + + protected Property createProperty(QName type, String name) { + + Property property = assemblyFactory.createProperty(); + property.setName(name); + property.setXSDType(type); + + property.setMany(false); + return property; + + } + + /** + * Creates a Reference for the component type based on its name and Java interface + */ + private Reference createReference(Class<?> interfaze, String name) throws InvalidInterfaceException { + Reference reference = assemblyFactory.createReference(); + JavaInterfaceContract interfaceContract = javaFactory.createJavaInterfaceContract(); + reference.setInterfaceContract(interfaceContract); + + // Set the name of the reference to the supplied name and the multiplicity of the reference + // to 1..1 - for XQuery implementations, this is the only multiplicity supported + reference.setName(name); + reference.setMultiplicity(Multiplicity.ONE_ONE); + + // Set the call interface and, if present, the callback interface + // Set the call interface and, if present, the callback interface + JavaInterface callInterface = null; + try { + callInterface = (JavaInterface) javaFactory.createJavaInterface(interfaze).clone(); + } catch (CloneNotSupportedException e) { + // Ignore + } + reference.getInterfaceContract().setInterface(callInterface); + if (callInterface.getCallbackClass() != null) { + JavaInterface callbackInterface = null; + try { + callbackInterface = (JavaInterface) javaFactory.createJavaInterface(callInterface.getCallbackClass()).clone(); + } catch (CloneNotSupportedException e) { + //Ignore + } + reference.getInterfaceContract().setCallbackInterface(callbackInterface); + } + + return reference; + } + + /** + * For the methods of each implemented service corresponding expression extension + * is generated + * @param xqueryImplementation + */ + private void fillExpressionExtensions(XQueryImplementation xqueryImplementation) { + for (Service service : xqueryImplementation.getServices()) { + Class<?> interfaze = ((JavaInterface)service.getInterfaceContract().getInterface()).getJavaClass(); + + // For each of the methods + for (Method method : interfaze.getMethods()) { + String expressionExtension = createExpressionExtension(method, interfaze, service.getName()); + xqueryImplementation.getXqExpressionExtensionsMap().put(method, expressionExtension); + } + } + } + + private String createExpressionExtension(Method method, Class<?> interfaze, String serviceName) { + StringBuffer exprBuf = new StringBuffer(); + + exprBuf.append("\r\n"); + + String methodName = method.getName(); + + // For each of the declared parameters + for (int i = 0; i < method.getParameterTypes().length; i++) { + exprBuf.append("declare variable $" + methodName + "_" + i + " external;\r\n"); + } + + exprBuf.append(serviceName + ":" + methodName + "("); + + for (int i = 0; i < method.getParameterTypes().length; i++) { + exprBuf.append("$" + methodName + "_" + i); + if (i != method.getParameterTypes().length - 1) { + exprBuf.append(", "); + } + } + exprBuf.append(")"); + + return exprBuf.toString(); + } +} |