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author | lresende <lresende@13f79535-47bb-0310-9956-ffa450edef68> | 2013-09-26 20:33:20 +0000 |
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committer | lresende <lresende@13f79535-47bb-0310-9956-ffa450edef68> | 2013-09-26 20:33:20 +0000 |
commit | e5b7380c874745c989d1816b8f552504f038e1bc (patch) | |
tree | 3084133139737c821ce5384bd27fc2258e795826 /sca-java-2.x/branches/2.0/modules/implementation-java-runtime/src/main/java/org/apache/tuscany/sca/implementation/java/injection/ResourceObjectFactory.java | |
parent | 33b786453598495cde754c80f5a9397de68ff60e (diff) |
2.0 branch for possible maintenance release
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1526672 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to '')
-rw-r--r-- | sca-java-2.x/branches/2.0/modules/implementation-java-runtime/src/main/java/org/apache/tuscany/sca/implementation/java/injection/ResourceObjectFactory.java | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/sca-java-2.x/branches/2.0/modules/implementation-java-runtime/src/main/java/org/apache/tuscany/sca/implementation/java/injection/ResourceObjectFactory.java b/sca-java-2.x/branches/2.0/modules/implementation-java-runtime/src/main/java/org/apache/tuscany/sca/implementation/java/injection/ResourceObjectFactory.java new file mode 100644 index 0000000000..8e2cd66299 --- /dev/null +++ b/sca-java-2.x/branches/2.0/modules/implementation-java-runtime/src/main/java/org/apache/tuscany/sca/implementation/java/injection/ResourceObjectFactory.java @@ -0,0 +1,89 @@ +/* + * 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.java.injection; + +import org.apache.tuscany.sca.core.factory.ObjectCreationException; +import org.apache.tuscany.sca.core.factory.ObjectFactory; + +import org.apache.tuscany.sca.implementation.java.ResourceHost; +import org.apache.tuscany.sca.implementation.java.ResourceResolutionException; + +/** + * Resolves a runtime resource to be injected on a field or method of a Java component type marked with {@link + * javax.annotation.Resource}. If the mapped name of the resource is an absolute URI such as + * <code>sca://localhost</code> or <code>jndi://localhost</code> the host container namespace is searched; otherwise the + * URI is assumed to be relative and the parent composite is searched. If a mapped name is not provided, i.e. resolution + * is by type, the parent composite is first searched followed by the host namespace. + * + * @version $Rev$ $Date$ + */ +public class ResourceObjectFactory<T> implements ObjectFactory<T> { + + private Class<T> type; + private String mappedName; + private ResourceHost host; + private boolean optional; + + /** + * Instantiates a factory that resolves resources by type + * + * @param type the type of the resource to inject + * @param optional true if an error should be thrown if the resource is not found + * @param host the runtime resource provider + */ + public ResourceObjectFactory(Class<T> type, boolean optional, ResourceHost host) { + this(type, null, optional, host); + } + + /** + * Instantiates a factory that resolves resources by mapped name + * + * @param type the type of the resource to inject + * @param mappedName the resource name + * @param optional true if an error should be thrown if the resource is not found + * @param host the runtime resource provider + */ + public ResourceObjectFactory(Class<T> type, String mappedName, boolean optional, ResourceHost host) { + this.type = type; + this.host = host; + this.mappedName = mappedName; + this.optional = optional; + } + + public T getInstance() throws ObjectCreationException { + try { + T resource; + if (mappedName == null) { + resource = host.resolveResource(type); + if (!optional && resource == null) { + throw new ResourceNotFoundException("Resource not found: " + type.getName()); + } + } else { + resource = host.resolveResource(type, mappedName); + if (!optional && resource == null) { + throw new ResourceNotFoundException("Resource not found: " + mappedName); + } + } + return resource; + } catch (ResourceResolutionException e) { + throw new ObjectCreationException(e); + } + + } +} |