/*
* 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 WARRANTIESOR 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.aries.application.modelling;
/* Base interface for a model of a requirement, or need for something, such as a bundle,
* package or service.
*/
public interface Consumer
{
/**
* Return the resource type
* @return the resource type, such as BUNDLE, PACKAGE, SERVICE, OTHER
*/
ResourceType getType();
/**
* This is not the same as the filter which you might get, say, by parsing a blueprint
* reference. It is more specific - and usable at runtime.
*
* @return String filter matching every property required by this consumer
*/
String getAttributeFilter();
/**
* Whether the resources consumed can be multiple.
* @return true if multiple resources can be consumed.
*/
boolean isMultiple();
/**
* Whether the resource consumed can be optional.
* @return true if optional.
*/
boolean isOptional();
/**
* Whether the provider object satisfies the consume criteria.
* @param capability The provider capability
* @return true if the capability satisfies the consuming criteria.
*/
boolean isSatisfied(Provider capability);
}