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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 org.apache.tuscany.spi.Lifecycle;
import org.apache.tuscany.spi.event.RuntimeEventListener;
import org.apache.tuscany.spi.model.Scope;
/**
* Manages the lifecycle and visibility of instances associated with a an {@link AtomicComponent}.
*
* @version $Rev$ $Date$
*/
public interface ScopeContainer extends Lifecycle, RuntimeEventListener {
/**
* Returns the scope value representing the scope context
*/
Scope getScope();
/**
* Registers a component with the scope component
*/
void register(AtomicComponent component);
/**
* Returns an implementation instance associated with the current request context, creating one if necessary
*
* @throws TargetResolutionException
*/
Object getInstance(AtomicComponent component) throws TargetResolutionException;
/**
* Returns an implementation instance associated with the current context. If no instance is found, a {@link
* TargetNotFoundException} is thrown
*
* @throws TargetResolutionException
*/
Object getAssociatedInstance(AtomicComponent component) throws TargetResolutionException;
/**
* Persists a new component implementation instance, equivalent to an insert or append operation
*
* @param component the owning component
* @param id the id associated with the instance
* @param instance the instance to persist
* @param expiration the expiration in milliseconds
* @throws PersistenceException
*/
void persistNew(AtomicComponent component, String id, Object instance, long expiration) throws PersistenceException;
/**
* Persists a component implementation instance, equivalent to an update operation
*
* @param component the owning component
* @param id the id associated with the instance
* @param instance the instance to persist
* @param expiration the expiration in milliseconds
* @throws PersistenceException
*/
void persist(AtomicComponent component, String id, Object instance, long expiration) throws PersistenceException;
/**
* Removes a component implementation instance associated with the current context from persistent storage
*
* @param component the owning component
* @throws PersistenceException
*/
void remove(AtomicComponent component) throws PersistenceException;
}
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