# AndSerializer.java

    /*
     *  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 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.apache.synapse.commons.evaluators.config;

    import org.apache.axiom.om.OMElement;
    import org.apache.synapse.commons.evaluators.Evaluator;
    import org.apache.synapse.commons.evaluators.AndEvaluator;
    import org.apache.synapse.commons.evaluators.EvaluatorConstants;
    import org.apache.synapse.commons.evaluators.EvaluatorException;

    /**
     * Serialize the {@link AndEvaluator} to the XML configuration defined in
     * the {@link AndFactory}.
     */
    public class AndSerializer extends AbstractEvaluatorSerializer {
        public OMElement serialize(OMElement parent, Evaluator evaluator) throws EvaluatorException {
            if (!(evaluator instanceof AndEvaluator)) {
                throw new IllegalArgumentException("Evalutor should be a AndEvalutor");
            }

            AndEvaluator andEvaluator = (AndEvaluator) evaluator;
            OMElement andElement  = fac.createOMElement(EvaluatorConstants.AND, EvaluatorConstants.SYNAPSE_NAMESPACE, EvaluatorConstants.EMPTY_PREFIX);
            serializeChildren(andElement, andEvaluator.getEvaluators());

            if (parent != null) {
                parent.addChild(andElement);
            }

            return andElement;
        }
    }