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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.x509;

import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

import org.opensaml.xml.security.CriteriaSet;
import org.opensaml.xml.security.SecurityException;

/**
 * An implementation of {@link PKIXValidationInformationResolver} which always returns a static, fixed set of
 * information.
 */
public class StaticPKIXValidationInformationResolver implements PKIXValidationInformationResolver {

    /** The PKIX validation information to return. */
    private List pkixInfo;

    /** The set of trusted names to return. */
    private Set trustedNames;

    /**
     * Constructor.
     * 
     * @param info list of PKIX validation information to return
     * @param names set of trusted names to return
     */
    public StaticPKIXValidationInformationResolver(List info, Set names) {
        if (info != null) {
            pkixInfo = new ArrayList(info);
        } else {
            pkixInfo = Collections.EMPTY_LIST;
        }

        if (names != null) {
            trustedNames = new HashSet(names);
        } else {
            trustedNames = Collections.EMPTY_SET;
        }
    }

    /** {@inheritDoc} */
    public Set resolveTrustedNames(CriteriaSet criteriaSet) throws SecurityException,
            UnsupportedOperationException {

        return trustedNames;
    }

    /** {@inheritDoc} */
    public boolean supportsTrustedNameResolution() {
        return true;
    }

    /** {@inheritDoc} */
    public Iterable resolve(CriteriaSet criteria) throws SecurityException {
        return pkixInfo;
    }

    /** {@inheritDoc} */
    public PKIXValidationInformation resolveSingle(CriteriaSet criteria) throws SecurityException {
        if (!pkixInfo.isEmpty()) {
            return pkixInfo.get(0);
        }
        return null;
    }

}