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/*
* 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.spi.component;
import java.util.List;
import org.apache.tuscany.spi.ObjectCreationException;
import org.apache.tuscany.spi.wire.InboundWire;
import org.apache.tuscany.spi.wire.OutboundWire;
/**
* The runtime instantiation of an SCA atomic, or leaf-type, component
*
* @version $Rev$ $Date$
*/
public interface AtomicComponent extends Component {
/**
* Returns true if component instances should be eagerly initialized.
*
* @return true if component instances should be eagerly initialized
*/
boolean isEagerInit();
/**
* Returns true if component instances receive destroy events.
*
* @return true if component instances receive destroy events
*/
boolean isDestroyable();
/**
* Returns the initialization level for this component.
*
* @return the initialization level for this component
*/
int getInitLevel();
/**
* Returns the idle time allowed between operations in milliseconds if the implementation is conversational.
*
* @return the idle time allowed between operations in milliseconds if the implementation is conversational
*/
long getMaxIdleTime();
/**
* Returns the maximum age a conversation may remain active in milliseconds if the implementation is
* conversational.
*
* @return the maximum age a conversation may remain active in milliseconds if the implementation is conversational
*/
long getMaxAge();
/**
* Adds a target-side wire. Target-side wire factories contain the invocation chains associated with the destination
* service of a wire
*/
void addInboundWire(InboundWire wire);
/**
* Adds a source-side wire for the given reference. Source-side wires contain the invocation chains for a reference
* in the implementation associated with the instance wrapper created by this configuration.
*/
void addOutboundWire(OutboundWire wire);
/**
* Adds a set of source-side multiplicity wires for the given reference. Source-side wires contain the invocation
* chains for a reference in the implementation associated with the instance wrapper created by this configuration.
*/
void addOutboundWires(List<OutboundWire> wires);
/**
* Notifies the given instance of an initialization event.
*
* @throws TargetInitializationException
*/
void init(Object instance) throws TargetInitializationException;
/**
* Notifies the given instance of a destroy event.
*
* @throws TargetDestructionException
*/
void destroy(Object instance) throws TargetDestructionException;
/**
* Creates a new implementation instance, generally used as a callback by a {@link
* org.apache.tuscany.spi.component.ScopeContainer}.
*
* @return the instance
* @throws ObjectCreationException
*/
Object createInstance() throws ObjectCreationException;
/**
* Removes an implementation instance associated with the current invocation context.
*
* @throws ComponentException
*/
void removeInstance() throws ComponentException;
/**
* Returns the target instance associated with the component. A target instance is the actual object a request is
* dispatched to sans wire chain.
*
* @throws TargetResolutionException
*/
Object getTargetInstance() throws TargetResolutionException;
}
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