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Open source JAX-RS (JSR 311) Reference Implementation for building RESTful Web services

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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
 *
 * The contents of this file are subject to the terms of the Common Development
 * and Distribution License("CDDL") (the "License").  You may not use this file
 * except in compliance with the License.
 *
 * You can obtain a copy of the License at:
 *     https://jersey.dev.java.net/license.txt
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * When distributing the Covered Code, include this CDDL Header Notice in each
 * file and include the License file at:
 *     https://jersey.dev.java.net/license.txt
 * If applicable, add the following below this CDDL Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 *     "Portions Copyrighted [year] [name of copyright owner]"
 */

package com.sun.ws.rest.impl.model.parameter;

import com.sun.ws.rest.api.core.HttpContext;
import com.sun.ws.rest.api.model.Parameter;

/**
 *
 * @author [email protected]
 */
public final class QueryParameterProcessor implements ParameterProcessor {
    
    private static final class QueryParameterExtractor implements ParameterExtractor {
        private final MultivaluedParameterExtractor extractor;
        private final boolean decode;
        
        QueryParameterExtractor(MultivaluedParameterExtractor extractor, boolean decode) {
            this.extractor = extractor;
            this.decode = decode;
        }
        
        public Object extract(HttpContext context) {
            return extractor.extract(context.getUriInfo().getQueryParameters(decode));
        }
    }
    
    public ParameterExtractor process(Parameter parameter) {
        String parameterName = parameter.getSourceName();
        if (parameterName == null || parameterName.length() == 0) {
            // Invalid query parameter name
            return null;
        }
        
        MultivaluedParameterExtractor e = MultivaluedDefaultListParameterProcessor.
                process(parameter.getDefaultValue(), parameter.getParameterClass(), 
                parameter.getParameterType(), parameterName);
        
        if (e == null)
            return null;
        
        return new QueryParameterExtractor(e, !parameter.isEncoded());
    }
}