# Constants.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.json;

    final class Constants {
        private Constants() {
        }

        public static final String JSON_STRING = "JSON_STRING";

        /**
         * The JSON Key for wrapper type JSON Object
         */
        public static final String K_OBJECT = "\"jsonObject\"";
        /**
         * The JSON Key for wrapper type anonymous JSON array
         */
        public static final String K_ARRAY = "\"jsonArray\"";
        /**
         * The JSON Key for wrapper type anonymous JSON array elements
         */
        public static final String K_ARRAY_ELEM = "\"jsonElement\"";

        public static final String ID = "_JsonReader";
        /**
         * Used when the local name starts with a digit character.
         */
        public static final String PRECEDING_DIGIT_S = "_PD_";
        /**
         * Final prefix for local names that have preceding digits
         */
        public static final String PRECEDING_DIGIT = ID + PRECEDING_DIGIT_S;
        /**
         * Used when the local name starts with the $ character.
         */
        public static final String PRECEDING_DOLLOR_S = "_PS_";
        public static final String PRECEDING_DOLLOR = ID + PRECEDING_DOLLOR_S;
        /**
         * The Dollar character
         */
        public static final int C_DOLLOR = '$';
        /**
         * The underscore character
         */
        public static final int C_USOCRE = '_';

        public static final String ID_KEY = ID + "_";

        // Constants used to control the behavior of JSON to XML conversion
        // Preserve the namespace declarations() in the JSON output in the XML -> JSON transformation.
        public static final String SYNAPSE_COMMONS_JSON_PRESERVE_NAMESPACE = "synapse.commons.json.preserve.namespace";

        // Build valid XML NCNames when building XML element names in the JSON -> XML transformation.
        public static final String SYNAPSE_COMMONS_JSON_BUILD_VALID_NC_NAMES = "synapse.commons.json.buildValidNCNames";

        // Enable primitive types in json out put in the XML -> JSON transformation.
        public static final String SYNAPSE_COMMONS_JSON_OUTPUT_AUTO_PRIMITIVE = "synapse.commons.json.output.autoPrimitive";

        // The namespace prefix separate character in the JSON output of the XML -> JSON transformation
        public static final String SYNAPSE_COMMONS_JSON_OUTPUT_NAMESPACE_SEP_CHAR =
                "synapse.commons.json.output.namespaceSepChar";

        // Add XML namespace declarations in the JSON output in the XML -> JSON transformation.
        public static final String SYNAPSE_COMMONS_JSON_OUTPUT_ENABLE_NS_DECLARATIONS =
                "synapse.commons.json.output.enableNSDeclarations";

        // Disable auto primitive conversion in XML -> JSON transformation
        public static final String SYNAPSE_COMMONS_JSON_OUTPUT_DISABLE_AUTO_PRIMITIVE_REGEX =
                "synapse.commons.json.output.disableAutoPrimitive.regex";

        // Property to set the JSON output to an array element in XML -> JSON transformation
        public static final String SYNAPSE_COMMONS_JSON_OUTPUT_JSON_OUT_AUTO_ARRAY =
                "synapse.commons.json.output.jsonoutAutoArray";

        // Property to set the JSON output to an xml multiple processing instruction in XML -> JSON transformation
        public static final String SYNAPSE_COMMONS_JSON_OUTPUT_JSON_OUT_MULTIPLE_PI =
                "synapse.commons.json.output.jsonoutMultiplePI";

        // Property to set the XML output to an array element in XML -> JSON transformation
        public static final String SYNAPSE_COMMONS_JSON_OUTPUT_XML_OUT_AUTO_ARRAY =
                "synapse.commons.json.output.xmloutAutoArray";

        // Property to set the XML output to an xml multiple processing instruction in XML -> JSON transformation
        public static final String SYNAPSE_COMMONS_JSON_OUTPUT_XML_OUT_MULTIPLE_PI =
                "synapse.commons.json.output.xmloutMultiplePI";

        // Property to set and empty element to empty JSON string in XML -> JSON transformation
        public static final String SYNAPSE_COMMONS_JSON_OUTPUT_EMPTY_XML_ELEM_TO_EMPTY_STR =
                "synapse.commons.json.output.emptyXmlElemToEmptyStr";

        // Property to set whether the user expects synapse to append a default charset encoding(UTF-8)
        // to the outgoing request
        public static final String SET_CONTENT_TYPE_CHARACTER_ENCODING = "setCharacterEncoding";

        /**
         * Property to inform Staxon library to include xml multiple processing instruction in JSON -> XML transformation
         */
        public static final String SYNAPSE_JSON_TO_XML_PROCESS_INSTRUCTION_ENABLE = "synapse.json.to.xml.processing.instruction.enabled";

    }