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Diffstat (limited to 'tags/java/sca/2.0-M4-RC1/modules/builder/src/main/java/org/apache/tuscany/sca/builder/impl/StructuralURIBuilderImpl.java')
| -rw-r--r-- | tags/java/sca/2.0-M4-RC1/modules/builder/src/main/java/org/apache/tuscany/sca/builder/impl/StructuralURIBuilderImpl.java | 276 |
1 files changed, 276 insertions, 0 deletions
diff --git a/tags/java/sca/2.0-M4-RC1/modules/builder/src/main/java/org/apache/tuscany/sca/builder/impl/StructuralURIBuilderImpl.java b/tags/java/sca/2.0-M4-RC1/modules/builder/src/main/java/org/apache/tuscany/sca/builder/impl/StructuralURIBuilderImpl.java new file mode 100644 index 0000000000..b543e3347d --- /dev/null +++ b/tags/java/sca/2.0-M4-RC1/modules/builder/src/main/java/org/apache/tuscany/sca/builder/impl/StructuralURIBuilderImpl.java @@ -0,0 +1,276 @@ +/* + * 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.builder.impl; + +import java.net.URI; +import java.util.HashMap; +import java.util.List; +import java.util.Map; + +import javax.xml.namespace.QName; + +import org.apache.tuscany.sca.assembly.Binding; +import org.apache.tuscany.sca.assembly.Component; +import org.apache.tuscany.sca.assembly.ComponentReference; +import org.apache.tuscany.sca.assembly.ComponentService; +import org.apache.tuscany.sca.assembly.Composite; +import org.apache.tuscany.sca.assembly.Contract; +import org.apache.tuscany.sca.assembly.Implementation; +import org.apache.tuscany.sca.assembly.Reference; +import org.apache.tuscany.sca.assembly.Service; +import org.apache.tuscany.sca.assembly.builder.BuilderContext; +import org.apache.tuscany.sca.assembly.builder.CompositeBuilder; +import org.apache.tuscany.sca.assembly.builder.CompositeBuilderException; +import org.apache.tuscany.sca.assembly.builder.Messages; +import org.apache.tuscany.sca.core.ExtensionPointRegistry; +import org.apache.tuscany.sca.definitions.Definitions; +import org.apache.tuscany.sca.monitor.Monitor; + +/** + * Configuration of binding URIs. + * + * @version $Rev$ $Date$ + */ +public class StructuralURIBuilderImpl implements CompositeBuilder { + + public StructuralURIBuilderImpl(ExtensionPointRegistry registry) { + } + + /** + * If a binding name is not provided by the user, construct it based on the service + * or reference name + * + * @param contract the service or reference + */ + private void constructBindingNames(Contract contract, Monitor monitor) { + List<Binding> bindings = contract.getBindings(); + Map<String, Binding> bindingMap = new HashMap<String, Binding>(); + for (Binding binding : bindings) { + // set the default binding name if one is required + // if there is no name on the binding then set it to the service or reference name + if (binding.getName() == null) { + binding.setName(contract.getName()); + } + Binding existed = bindingMap.put(binding.getName(), binding); + // Check that multiple bindings do not have the same name + if (existed != null && existed != binding) { + if (contract instanceof Service) { + Monitor.error(monitor, this, Messages.ASSEMBLY_VALIDATION, "MultipleBindingsForService", contract + .getName(), binding.getName()); + } else { + Monitor.error(monitor, + this, + Messages.ASSEMBLY_VALIDATION, + "MultipleBindingsForReference", + contract.getName(), + binding.getName()); + } + } + } + + if (contract.getCallback() != null) { + bindings = contract.getCallback().getBindings(); + bindingMap.clear(); + for (Binding binding : bindings) { + // set the default binding name if one is required + // if there is no name on the binding then set it to the service or reference name + if (binding.getName() == null) { + binding.setName(contract.getName()); + } + Binding existed = bindingMap.put(binding.getName(), binding); + // Check that multiple bindings do not have the same name + if (existed != null && existed != binding) { + if (contract instanceof Service) { + Monitor.error(monitor, + this, + Messages.ASSEMBLY_VALIDATION, + "MultipleBindingsForServiceCallback", + contract.getName(), + binding.getName()); + } else { + Monitor.error(monitor, + this, + Messages.ASSEMBLY_VALIDATION, + "MultipleBindingsForReferenceCallback", + contract.getName(), + binding.getName()); + } + } + } + } + } + + /** + * Concatenate binding URI parts together based on Assembly Specification section 1.7.2 + * + * @param baseURI the base of the binding URI + * @param componentURI the middle part of the binding URI derived from the component name + * @param bindingURI the end part of the binding URI + * @param includeBindingName when set true the binding name part should be used + * @param bindingName the binding name + * @return the resulting URI as a string + */ + private static String constructBindingURI(URI baseURI, + URI componentURI, + URI bindingURI, + String serviceName, + boolean includeBindingName, + String bindingName) { + String name = includeBindingName ? serviceName + "/" + bindingName : serviceName; + String uriString; + + if (baseURI == null) { + if (componentURI == null) { + if (bindingURI != null) { + uriString = name + "/" + bindingURI.toString(); + } else { + uriString = name; + } + } else { + if (bindingURI != null) { + if (bindingURI.toString().startsWith("/")) { + uriString = componentURI.resolve(bindingURI).toString(); + } else { + uriString = componentURI.resolve(name + "/" + bindingURI).toString(); + } + } else { + uriString = componentURI.resolve(name).toString(); + } + } + } else { + if (componentURI == null) { + if (bindingURI != null) { + uriString = basedURI(baseURI, bindingURI).toString(); + } else { + uriString = basedURI(baseURI, URI.create(name)).toString(); + } + } else { + if (bindingURI != null) { + uriString = basedURI(baseURI, componentURI.resolve(bindingURI)).toString(); + } else { + uriString = basedURI(baseURI, componentURI.resolve(name)).toString(); + } + } + } + + // tidy up by removing any trailing "/" + if (uriString.endsWith("/")) { + uriString = uriString.substring(0, uriString.length() - 1); + } + + URI uri = URI.create(uriString); + if (!uri.isAbsolute()) { + uri = URI.create("/").resolve(uri); + } + return uri.toString(); + } + + /** + * Combine a URI with a base URI. + * + * @param baseURI + * @param uri + * @return + */ + private static URI basedURI(URI baseURI, URI uri) { + if (uri.getScheme() != null) { + return uri; + } + String str = uri.toString(); + if (str.startsWith("/")) { + str = str.substring(1); + } + return URI.create(baseURI.toString() + str).normalize(); + } + + public Composite build(Composite composite, BuilderContext context) + throws CompositeBuilderException { + configureStructuralURIs(composite, null, context.getDefinitions(), context.getBindingBaseURIs(), context.getMonitor()); + return composite; + } + + public String getID() { + return "org.apache.tuscany.sca.assembly.builder.StructualURIBuilder"; + } + + private void configureStructuralURIs(Composite composite, + String parentComponentURI, + Definitions definitions, + Map<QName, List<String>> defaultBindings, + Monitor monitor) throws CompositeBuilderException { + + monitor.pushContext("Composite: " + composite.getName().toString()); + try { + for (Service service : composite.getServices()) { + constructBindingNames(service, monitor); + } + + for (Reference reference : composite.getReferences()) { + constructBindingNames(reference, monitor); + } + + // Process nested composites recursively + for (Component component : composite.getComponents()) { + + // Initialize component URI + String componentURI; + if (parentComponentURI == null) { + componentURI = component.getName(); + } else { + componentURI = parentComponentURI + '/' + component.getName(); + } + component.setURI(componentURI); + + monitor.pushContext("Component: " + component.getName()); + try { + for (ComponentService service : component.getServices()) { + constructBindingNames(service, monitor); + + /* + // Initialize binding names and URIs + for (Binding binding : service.getBindings()) { + constructBindingURI(componentURI, service, binding, defaultBindings, monitor); + } + */ + } + for (ComponentReference service : component.getReferences()) { + constructBindingNames(service, monitor); + } + } finally { + monitor.popContext(); + } + + Implementation implementation = component.getImplementation(); + if (implementation instanceof Composite) { + // Process nested composite + configureStructuralURIs((Composite)implementation, + componentURI, + definitions, + defaultBindings, + monitor); + } + } + + } finally { + monitor.popContext(); + } + } + +} |