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'databene commons' is an open source Java library by Volker Bergmann.
It provides extensions to the Java core library by utility classes, abstract concepts
and concrete implementations.
/*
* Copyright (C) 2004-2015 Volker Bergmann ([email protected]).
* All rights reserved.
*
* 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.databene.commons.depend;
import java.util.ArrayList;
import java.util.List;
/**
* Abstract class that provides partial featur implementation of the Dependent interface.
* @param the type of the objects to process
* @author Volker Bergmann
* @since 0.3.04
*/
public abstract class AbstractDependent> implements Dependent {
protected List> providers;
public AbstractDependent(E ... requiredProviders) {
this.providers = new ArrayList>();
for (E requiredProvider : requiredProviders)
addRequiredProvider(requiredProvider);
}
public void addRequiredProvider(E provider) {
providers.add(new ProviderInfo(provider, true));
}
public void addOptionalProvider(E provider) {
providers.add(new ProviderInfo(provider, false));
}
// Dependent interface --------------------------------------------------------------------------
@Override
public int countProviders() {
return providers.size();
}
@Override
public E getProvider(int index) {
return providers.get(index).getProvider();
}
@Override
public boolean requiresProvider(int index) {
return providers.get(index).isRequired();
}
}