diff options
Diffstat (limited to 'tags/java/sca/2.0-M3-RC3a/modules/assembly/src/main/java/org/apache/tuscany/sca/assembly/builder/impl/ComponentReferenceWireBuilderImpl.java')
-rw-r--r-- | tags/java/sca/2.0-M3-RC3a/modules/assembly/src/main/java/org/apache/tuscany/sca/assembly/builder/impl/ComponentReferenceWireBuilderImpl.java | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/tags/java/sca/2.0-M3-RC3a/modules/assembly/src/main/java/org/apache/tuscany/sca/assembly/builder/impl/ComponentReferenceWireBuilderImpl.java b/tags/java/sca/2.0-M3-RC3a/modules/assembly/src/main/java/org/apache/tuscany/sca/assembly/builder/impl/ComponentReferenceWireBuilderImpl.java new file mode 100644 index 0000000000..dc0a9298fa --- /dev/null +++ b/tags/java/sca/2.0-M3-RC3a/modules/assembly/src/main/java/org/apache/tuscany/sca/assembly/builder/impl/ComponentReferenceWireBuilderImpl.java @@ -0,0 +1,188 @@ +/* + * 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.assembly.builder.impl; + +import java.util.HashMap; +import java.util.List; +import java.util.Map; + +import org.apache.tuscany.sca.assembly.AssemblyFactory; +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.CompositeReference; +import org.apache.tuscany.sca.assembly.Implementation; +import org.apache.tuscany.sca.assembly.Reference; +import org.apache.tuscany.sca.assembly.Wire; +import org.apache.tuscany.sca.assembly.builder.CompositeBuilder; +import org.apache.tuscany.sca.assembly.builder.CompositeBuilderException; +import org.apache.tuscany.sca.definitions.Definitions; +import org.apache.tuscany.sca.interfacedef.InterfaceContractMapper; +import org.apache.tuscany.sca.monitor.Monitor; + +/** + * A composite builder that wires component references. + * + * @version $Rev$ $Date$ + */ +public class ComponentReferenceWireBuilderImpl extends BaseBuilderImpl implements CompositeBuilder { + + public ComponentReferenceWireBuilderImpl(AssemblyFactory assemblyFactory, InterfaceContractMapper interfaceContractMapper) { + super(assemblyFactory, null, null, null, interfaceContractMapper); + } + + public String getID() { + return "org.apache.tuscany.sca.assembly.builder.ComponentReferenceWireBuilder"; + } + + public void build(Composite composite, Definitions definitions, Monitor monitor) throws CompositeBuilderException { + wireComponentReferences(composite, monitor); + } + + /** + * Wire component references to component services and connect promoted + * services/references to component services/references inside a composite. + * + * @param composite + */ + protected void wireComponentReferences(Composite composite, Monitor monitor) { + + // Wire nested composites recursively + for (Component component : composite.getComponents()) { + Implementation implementation = component.getImplementation(); + if (implementation instanceof Composite) { + wireComponentReferences((Composite)implementation, monitor); + } + } + + // Index components, services and references + Map<String, Component> components = new HashMap<String, Component>(); + Map<String, ComponentService> componentServices = new HashMap<String, ComponentService>(); + Map<String, ComponentReference> componentReferences = new HashMap<String, ComponentReference>(); + indexComponentsServicesAndReferences(composite, components, componentServices, componentReferences); + + // Connect component references as described in wires + connectWires(composite, componentServices, componentReferences, monitor); + + + // Validate that references are wired or promoted, according + // to their multiplicity + for (ComponentReference componentReference : componentReferences.values()) { + if (!ReferenceConfigurationUtil.validateMultiplicityAndTargets(componentReference.getMultiplicity(), componentReference + .getTargets(), componentReference.getBindings())) { + if (componentReference.getTargets().isEmpty()) { + + // No warning if the reference is promoted out of the current composite + boolean promoted = false; + for (Reference reference : composite.getReferences()) { + CompositeReference compositeReference = (CompositeReference)reference; + if (compositeReference.getPromotedReferences().contains(componentReference)) { + promoted = true; + break; + } + } + if (!promoted && !componentReference.isCallback()) { + warning(monitor, "ReferenceWithoutTargets", composite, composite.getName().toString(), + componentReference.getName()); + } + } else { + warning(monitor, "TooManyReferenceTargets", composite, componentReference.getName()); + } + } + } + + // Finally clear the original reference target lists as we now have + // bindings to represent the targets + // for (ComponentReference componentReference : componentReferences.values()) { + // componentReference.getTargets().clear(); + // } + } + + /** + * Resolve wires and connect the sources to their targets + * + * @param composite + * @param componentServices + * @param componentReferences + * @param problems + */ + private void connectWires(Composite composite, + Map<String, ComponentService> componentServices, + Map<String, ComponentReference> componentReferences, + Monitor monitor) { + + // For each wire, resolve the source reference, the target service, and + // add it to the list of targets of the reference + List<Wire> wires = composite.getWires(); + for (int i = 0, n = wires.size(); i < n; i++) { + Wire wire = wires.get(i); + + ComponentReference resolvedReference; + ComponentService resolvedService; + + // Resolve the source reference + ComponentReference source = wire.getSource(); + if (source != null && source.isUnresolved()) { + resolvedReference = componentReferences.get(source.getName()); + if (resolvedReference != null) { + wire.setSource(resolvedReference); + } else { + warning(monitor, "WireSourceNotFound", composite, source.getName()); + } + } else { + resolvedReference = wire.getSource(); + } + + // Resolve the target service + ComponentService target = wire.getTarget(); + if (target != null && target.isUnresolved()) { + resolvedService = componentServices.get(target.getName()); + if (resolvedService != null) { + wire.setTarget(target); + } else { + warning(monitor, "WireTargetNotFound", composite, source.getName()); + } + } else { + resolvedService = wire.getTarget(); + } + + // Add the target service to the list of targets of the + // reference + if (resolvedReference != null && resolvedService != null) { + // Check that the target component service provides + // a superset of + // the component reference interface + if (resolvedReference.getInterfaceContract() == null || interfaceContractMapper + .isCompatible(resolvedReference.getInterfaceContract(), resolvedService.getInterfaceContract())) { + + //resolvedReference.getTargets().add(resolvedService); + resolvedReference.getTargets().add(wire.getTarget()); + } else { + warning(monitor, "WireIncompatibleInterface", composite, source.getName(), target.getName()); + } + } + } + + // Clear the list of wires + composite.getWires().clear(); + } + +} |