001    // Copyright 2011 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    // http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    
015    package org.apache.tapestry5.json.services;
016    
017    import org.apache.tapestry5.internal.json.StringToJSONArray;
018    import org.apache.tapestry5.internal.json.StringToJSONObject;
019    import org.apache.tapestry5.ioc.Configuration;
020    import org.apache.tapestry5.ioc.annotations.Contribute;
021    import org.apache.tapestry5.ioc.services.CoercionTuple;
022    import org.apache.tapestry5.ioc.services.TypeCoercer;
023    import org.apache.tapestry5.json.JSONArray;
024    import org.apache.tapestry5.json.JSONObject;
025    
026    /**
027     * A module that integrates JSON into Tapestry in terms of type coercions.  tapestry-json can still
028     * be used independently of the rest of Tapestry (since its a 'provided' dependency),
029     * but when used with tapestry-ioc on the classpath, the coercions described by this module become available.
030     *
031     * @since 5.3
032     */
033    public class JSONModule
034    {
035        /**
036         * <ul>
037         * <li>{@link String} to {@link org.apache.tapestry5.json.JSONObject}</li>
038         * <li>{@link String} to {@link org.apache.tapestry5.json.JSONArray}</li>
039         * </ul>
040         */
041        @Contribute(TypeCoercer.class)
042        public static void provideCoercions(Configuration<CoercionTuple> configuration)
043        {
044            configuration.add(CoercionTuple.create(String.class, JSONObject.class, new StringToJSONObject()));
045    
046            configuration.add(CoercionTuple.create(String.class, JSONArray.class, new StringToJSONArray()));
047        }
048    }