# ReservedStringExpression.java

    /*
    *  Copyright (c) 2005-2010, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
    *
    *  WSO2 Inc. 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.templates.uri.parser;

    import org.apache.synapse.commons.templates.uri.URITemplateException;

    import java.util.Map;

    public class ReservedStringExpression extends SimpleStringExpression {

        public ReservedStringExpression(String token) throws URITemplateException {
            super(token);
        }

        @Override
        protected boolean isReserved(char ch) {
            return false;
        }

        @Override
        protected String encodeValue(String value) {
            StringBuilder builder = new StringBuilder();
            for (int i = 0 ; i < value.length(); i++) {
                char ch = value.charAt(i);
                if (super.isReserved(ch)) {
                    builder.append(ch);
                } else {
                    builder.append(super.encodeValue(String.valueOf(ch)));
                }
            }
            return builder.toString();
        }

        @Override
        protected boolean setVariables(String expressionValue, Map<String, String> variables) {
            if (variableList.size() == 1) {
                Variable var = variableList.get(0);
                String name = var.getName();
                String finalValue = decodeValue(expressionValue);
                if (variables.containsKey(name) && !finalValue.equals(variables.get(name))) {
                    return false;
                }

                if (var.checkModifier(finalValue)) {
                    variables.put(name, finalValue);
                    return true;
                } else {
                    return false;
                }
            }
            return super.setVariables(expressionValue, variables);
        }
    }