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Diffstat (limited to 'sca-java-1.x/tags/java-M1-final/java/sca/core/src/main/java/org/apache/tuscany/core/context/Context.java')
-rw-r--r-- | sca-java-1.x/tags/java-M1-final/java/sca/core/src/main/java/org/apache/tuscany/core/context/Context.java | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/java-M1-final/java/sca/core/src/main/java/org/apache/tuscany/core/context/Context.java b/sca-java-1.x/tags/java-M1-final/java/sca/core/src/main/java/org/apache/tuscany/core/context/Context.java new file mode 100644 index 0000000000..df313d8000 --- /dev/null +++ b/sca-java-1.x/tags/java-M1-final/java/sca/core/src/main/java/org/apache/tuscany/core/context/Context.java @@ -0,0 +1,46 @@ +/** + * + * Copyright 2005 The Apache Software Foundation or its licensors, as applicable. + * + * 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.core.context; + +/** + * An entity that provides an execution context for a runtime artifact or artifacts. A <code>Context</code> may + * be a composite, managing child contexts or it may be an atomic, i.e. leaf, context. + * + * @version $Rev$ $Date$ + */ +public interface Context extends EventPublisher, Lifecycle { + /** + * Returns the instance associated with the requested name, which may be in a atomic or composite form. Atomic (i.e. + * leaf) contexts will return an instance associated with the service name part of the compound name, which may be + * null. + * <p/> + * Composite contexts will return an instance (likely a proxy) of a contained entry point context. In this case, the + * port name on the qualified name will correspond to the composite context name and the part name will be used to + * retrieve the contained entry point context. The latter may be null. If the contained context is not an entry + * point context, an exception will be thrown. + * + * @param qName a qualified name of the requested instance + * @return the implementation instance or a proxy to it + * @throws TargetException + * if an error occurs retrieving the instance or the requested component is not an entry + * point. + * @see CompositeContext + * @see org.apache.tuscany.model.assembly.EntryPoint + */ + public Object getInstance(QualifiedName qName) throws TargetException; + +} |