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XMLTooling-J is a low-level library that may be used to construct libraries that allow developers to work with XML in a Java beans manner.

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/*
 * Licensed to the University Corporation for Advanced Internet Development, 
 * Inc. (UCAID) under one or more contributor license agreements.  See the 
 * NOTICE file distributed with this work for additional information regarding
 * copyright ownership. The UCAID 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.opensaml.xml.security.credential;

import java.util.ArrayList;
import java.util.Collection;

import org.opensaml.xml.security.CriteriaSet;
import org.opensaml.xml.security.SecurityException;
import org.opensaml.xml.security.credential.criteria.EvaluableCredentialCriteria;
import org.opensaml.xml.security.credential.criteria.EvaluableCredentialCriteriaRegistry;

/**
 * An implementation of {@link CredentialResolver} which uses a {@link Collection} as the
 * underlying credential source.
 * 
 * 
 * The credentials returned are filtered based on any
 * {@link EvaluableCredentialCriteria} which may have been present in the specified criteria set, or
 * which are resolved by lookup in the {@link EvaluableCredentialCriteriaRegistry}.
 * 
 */
public class CollectionCredentialResolver extends AbstractCriteriaFilteringCredentialResolver {
    
    /** The collection of credentials which is the underlying store for the resolver. */
    private Collection collection;
    
    /**
     * Constructor.
     * 
     * An {@link ArrayList} is used as the underlying collection implementation.
     *
     */
    public CollectionCredentialResolver() {
        super();
        collection = new ArrayList();
    }
    
    /**
     * Constructor.
     *
     * @param credentials the credential collection which is the backing store for the resolver
     */
    public CollectionCredentialResolver(Collection credentials) {
        super();
        collection = credentials;
    }
    
    /**
     * Get the (modifiable) credential collection which is the backing store for the resolver.
     * 
     * @return the credential collection backing store
     */
    public Collection getCollection() {
        return collection;
    }

    /** {@inheritDoc} */
    protected Iterable resolveFromSource(CriteriaSet criteriaSet) throws SecurityException {
        return collection;
    }

}