001// ***************************************************************************************************************************
002// * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements.  See the NOTICE file *
003// * distributed with this work for additional information regarding copyright ownership.  The ASF licenses this file        *
004// * to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance            *
005// * with the License.  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 distributed under the License is distributed on an  *
010// * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the License for the        *
011// * specific language governing permissions and limitations under the License.                                              *
012// ***************************************************************************************************************************
013package org.apache.juneau.plaintext;
014
015import org.apache.juneau.*;
016import org.apache.juneau.annotation.*;
017import org.apache.juneau.serializer.*;
018import org.apache.juneau.transform.*;
019
020/**
021 * Serializes POJOs to plain text using just the <c>toString()</c> method on the serialized object.
022 *
023 * <h5 class='topic'>Media types</h5>
024 *
025 * Handles <c>Accept</c> types:  <bc>text/plain</bc>
026 * <p>
027 * Produces <c>Content-Type</c> types:  <bc>text/plain</bc>
028 *
029 * <h5 class='topic'>Description</h5>
030 *
031 * Essentially converts POJOs to plain text using the <c>toString()</c> method.
032 *
033 * <p>
034 * Also serializes objects using a transform if the object class has an {@link PojoSwap PojoSwap&lt;?,String&gt;}
035 * transform defined on it.
036 */
037@ConfigurableContext
038public class PlainTextSerializer extends WriterSerializer {
039
040   //-------------------------------------------------------------------------------------------------------------------
041   // Configurable properties
042   //-------------------------------------------------------------------------------------------------------------------
043
044   static final String PREFIX = "PlainTextSerializer";
045
046   //-------------------------------------------------------------------------------------------------------------------
047   // Predefined instances
048   //-------------------------------------------------------------------------------------------------------------------
049
050   /** Default serializer, all default settings.*/
051   public static final PlainTextSerializer DEFAULT = new PlainTextSerializer(PropertyStore.DEFAULT);
052
053
054   //-------------------------------------------------------------------------------------------------------------------
055   // Instance
056   //-------------------------------------------------------------------------------------------------------------------
057
058   /**
059    * Constructor.
060    *
061    * @param ps
062    *    The property store containing all the settings for this object.
063    */
064   public PlainTextSerializer(PropertyStore ps) {
065      this(ps, "text/plain", (String)null);
066   }
067
068   /**
069    * Constructor.
070    *
071    * @param ps
072    *    The property store containing all the settings for this object.
073    * @param produces
074    *    The media type that this serializer produces.
075    * @param accept
076    *    The accept media types that the serializer can handle.
077    *    <p>
078    *    Can contain meta-characters per the <c>media-type</c> specification of {@doc RFC2616.section14.1}
079    *    <p>
080    *    If empty, then assumes the only media type supported is <c>produces</c>.
081    *    <p>
082    *    For example, if this serializer produces <js>"application/json"</js> but should handle media types of
083    *    <js>"application/json"</js> and <js>"text/json"</js>, then the arguments should be:
084    *    <p class='bcode w800'>
085    *    <jk>super</jk>(ps, <js>"application/json"</js>, <js>"application/json,text/json"</js>);
086    *    </p>
087    *    <br>...or...
088    *    <p class='bcode w800'>
089    *    <jk>super</jk>(ps, <js>"application/json"</js>, <js>"*&#8203;/json"</js>);
090    *    </p>
091    * <p>
092    * The accept value can also contain q-values.
093    */
094   public PlainTextSerializer(PropertyStore ps, String produces, String accept) {
095      super(ps, produces, accept);
096   }
097
098
099   @Override /* Context */
100   public PlainTextSerializerBuilder builder() {
101      return new PlainTextSerializerBuilder(getPropertyStore());
102   }
103
104   /**
105    * Instantiates a new clean-slate {@link PlainTextSerializerBuilder} object.
106    *
107    * <p>
108    * This is equivalent to simply calling <code><jk>new</jk> PlainTextSerializerBuilder()</code>.
109    *
110    * <p>
111    * Note that this method creates a builder initialized to all default settings, whereas {@link #builder()} copies
112    * the settings of the object called on.
113    *
114    * @return A new {@link PlainTextSerializerBuilder} object.
115    */
116   public static PlainTextSerializerBuilder create() {
117      return new PlainTextSerializerBuilder();
118   }
119
120   @Override /* Context */
121   public  PlainTextSerializerSession createSession() {
122      return createSession(createDefaultSessionArgs());
123   }
124
125   @Override /* Serializer */
126   public PlainTextSerializerSession createSession(SerializerSessionArgs args) {
127      return new PlainTextSerializerSession(this, args);
128   }
129
130   //-----------------------------------------------------------------------------------------------------------------
131   // Other methods
132   //-----------------------------------------------------------------------------------------------------------------
133
134   @Override /* Context */
135   public ObjectMap toMap() {
136      return super.toMap()
137         .append("PlainTextSerializer", new DefaultFilteringObjectMap()
138         );
139   }
140}