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Diffstat (limited to 'branches/sca-java-2.0-M4/modules/assembly/src/main/java/org/apache/tuscany/sca/assembly/Contract.java')
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1 files changed, 110 insertions, 0 deletions
diff --git a/branches/sca-java-2.0-M4/modules/assembly/src/main/java/org/apache/tuscany/sca/assembly/Contract.java b/branches/sca-java-2.0-M4/modules/assembly/src/main/java/org/apache/tuscany/sca/assembly/Contract.java new file mode 100644 index 0000000000..731c2986b5 --- /dev/null +++ b/branches/sca-java-2.0-M4/modules/assembly/src/main/java/org/apache/tuscany/sca/assembly/Contract.java @@ -0,0 +1,110 @@ +/* + * 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; + +import java.util.List; + +import org.apache.tuscany.sca.interfacedef.InterfaceContract; +import org.apache.tuscany.sca.policy.PolicySubject; + +/** + * Represents a contract. A contract can be either a service or a reference. + * + * @version $Rev$ $Date$ + */ +public interface Contract extends AbstractContract, PolicySubject, Cloneable { + + /** + * Returns the bindings supported by this contract. + * + * @return the bindings supported by this contract + */ + List<Binding> getBindings(); + + /** + * Returns a binding of the specified type or null if there is no such + * binding configured on this contract. + * + * @param <B> the binding type + * @param bindingClass the binding type class + * @return the binding or null if there is no binding of the specified type + */ + <B> B getBinding(Class<B> bindingClass); + + /** + * Returns a callback binding of the specified type or null if there is no such + * callback binding configured on this contract. + * + * @param <B> the callback binding type + * @param bindingClass the callback binding type class + * @return the callback binding or null if there is no callback binding of the specified type + */ + <B> B getCallbackBinding(Class<B> bindingClass); + + /** + * Returns a callback definition of the bindings to use for callbacks. + * + * @return a definition of the bindings to use for callbacks + */ + Callback getCallback(); + + /** + * Sets a callback definition of the bindings to use for callbacks + * + * @param callback a definition of the bindings to use for callbacks + */ + void setCallback(Callback callback); + + /** + * Returns a clone of the contract. + * + * @return a clone of the reference + * @throws CloneNotSupportedException + */ + Object clone() throws CloneNotSupportedException; + + /** + * Returns the interface contract given a binding. Important in the case where + * a reference with multiplicity > 1 has been promoted and has it's list of + * resolved bindings extended by a promoting reference. Here the binding + * from the promoting reference may need the interface contract from the + * promoting reference and not the promoted reference. + * TODO - remove this wrinkle with better endpoint support. + * + * @param binding the binding for which the interface contract is required + * @return the interface contract + */ + InterfaceContract getInterfaceContract(Binding binding); + + /** + * A flag to tell if there are any binding elements specified for this service or reference. + * If true, they override the the bindings in the corresponding reference/service in the + * component type or promoted reference/service. + * @return + */ + boolean isOverridingBindings(); + + /** + * Set the flag depending on if there are any binding elements specified for this service or + * reference. + * @param overridingBindings true if there are binding elements specified + */ + void setOverridingBindings(boolean overridingBindings); + +} |