1<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 2<!-- NewPage --> 3<html lang="en"> 4<head> 5<!-- Generated by javadoc (1.8.0) on Sun Jul 19 11:36:54 PDT 2015 --> 6<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 7<title>com.fasterxml.jackson.databind (jackson-databind 2.6.0 API)</title> 8<meta name="date" content="2015-07-19"> 9<link rel="stylesheet" type="text/css" href="../../../../stylesheet.css" title="Style"> 10<script type="text/javascript" src="../../../../script.js"></script> 11</head> 12<body> 13<script type="text/javascript"><!-- 14 try { 15 if (location.href.indexOf('is-external=true') == -1) { 16 parent.document.title="com.fasterxml.jackson.databind (jackson-databind 2.6.0 API)"; 17 } 18 } 19 catch(err) { 20 } 21//--> 22</script> 23<noscript> 24<div>JavaScript is disabled on your browser.</div> 25</noscript> 26<!-- ========= START OF TOP NAVBAR ======= --> 27<div class="topNav"><a name="navbar.top"> 28<!-- --> 29</a> 30<div class="skipNav"><a href="#skip.navbar.top" title="Skip navigation links">Skip navigation links</a></div> 31<a name="navbar.top.firstrow"> 32<!-- --> 33</a> 34<ul class="navList" title="Navigation"> 35<li><a href="../../../../overview-summary.html">Overview</a></li> 36<li class="navBarCell1Rev">Package</li> 37<li>Class</li> 38<li><a href="package-use.html">Use</a></li> 39<li><a href="package-tree.html">Tree</a></li> 40<li><a href="../../../../deprecated-list.html">Deprecated</a></li> 41<li><a href="../../../../index-all.html">Index</a></li> 42<li><a href="../../../../help-doc.html">Help</a></li> 43</ul> 44</div> 45<div class="subNav"> 46<ul class="navList"> 47<li>Prev Package</li> 48<li><a href="../../../../com/fasterxml/jackson/databind/annotation/package-summary.html">Next Package</a></li> 49</ul> 50<ul class="navList"> 51<li><a href="../../../../index.html?com/fasterxml/jackson/databind/package-summary.html" target="_top">Frames</a></li> 52<li><a 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well as 79writing Java Objects and trees as JSON.</div> 80</div> 81<p>See: <a href="#package.description">Description</a></p> 82</div> 83<div class="contentContainer"> 84<ul class="blockList"> 85<li class="blockList"> 86<table class="typeSummary" border="0" cellpadding="3" cellspacing="0" summary="Interface Summary table, listing interfaces, and an explanation"> 87<caption><span>Interface Summary</span><span class="tabEnd"> </span></caption> 88<tr> 89<th class="colFirst" scope="col">Interface</th> 90<th class="colLast" scope="col">Description</th> 91</tr> 92<tbody> 93<tr class="altColor"> 94<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/BeanProperty.html" title="interface in com.fasterxml.jackson.databind">BeanProperty</a></td> 95<td class="colLast"> 96<div class="block">Bean properties are logical entities that represent data 97 that Java objects (POJOs (Plain Old Java Objects), sometimes also called "beans") 98 contain; and that are accessed using accessors (methods like getters 99 and setters, fields, constructor parametrers).</div> 100</td> 101</tr> 102<tr class="rowColor"> 103<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/JsonSerializable.html" title="interface in com.fasterxml.jackson.databind">JsonSerializable</a></td> 104<td class="colLast"> 105<div class="block">Interface that can be implemented by objects that know how to 106 serialize themselves to JSON, using <code>JsonGenerator</code> 107 (and <a href="../../../../com/fasterxml/jackson/databind/SerializerProvider.html" title="class in com.fasterxml.jackson.databind"><code>SerializerProvider</code></a> if necessary).</div> 108</td> 109</tr> 110<tr class="altColor"> 111<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/Module.SetupContext.html" title="interface in com.fasterxml.jackson.databind">Module.SetupContext</a></td> 112<td class="colLast"> 113<div class="block">Interface Jackson exposes to modules for purpose of registering 114 extended functionality.</div> 115</td> 116</tr> 117</tbody> 118</table> 119</li> 120<li class="blockList"> 121<table class="typeSummary" border="0" cellpadding="3" cellspacing="0" summary="Class Summary table, listing classes, and an explanation"> 122<caption><span>Class Summary</span><span class="tabEnd"> </span></caption> 123<tr> 124<th class="colFirst" scope="col">Class</th> 125<th class="colLast" scope="col">Description</th> 126</tr> 127<tbody> 128<tr class="altColor"> 129<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/AbstractTypeResolver.html" title="class in com.fasterxml.jackson.databind">AbstractTypeResolver</a></td> 130<td class="colLast"> 131<div class="block">Defines interface for resolvers that can resolve abstract types into concrete 132 ones; either by using static mappings, or possibly by materializing 133 implementations dynamically.</div> 134</td> 135</tr> 136<tr class="rowColor"> 137<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/AnnotationIntrospector.html" title="class in com.fasterxml.jackson.databind">AnnotationIntrospector</a></td> 138<td class="colLast"> 139<div class="block">Abstract class that defines API used for introspecting annotation-based 140 configuration for serialization and deserialization.</div> 141</td> 142</tr> 143<tr class="altColor"> 144<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/AnnotationIntrospector.ReferenceProperty.html" title="class in com.fasterxml.jackson.databind">AnnotationIntrospector.ReferenceProperty</a></td> 145<td class="colLast"> 146<div class="block">Value type used with managed and back references; contains type and 147 logic name, used to link related references</div> 148</td> 149</tr> 150<tr class="rowColor"> 151<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/BeanDescription.html" title="class in com.fasterxml.jackson.databind">BeanDescription</a></td> 152<td class="colLast"> 153<div class="block">Basic container for information gathered by <a href="../../../../com/fasterxml/jackson/databind/introspect/ClassIntrospector.html" title="class in com.fasterxml.jackson.databind.introspect"><code>ClassIntrospector</code></a> to 154 help in constructing serializers and deserializers.</div> 155</td> 156</tr> 157<tr class="altColor"> 158<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/BeanProperty.Std.html" title="class in com.fasterxml.jackson.databind">BeanProperty.Std</a></td> 159<td class="colLast"> 160<div class="block">Simple stand-alone implementation, useful as a placeholder 161 or base class for more complex implementations.</div> 162</td> 163</tr> 164<tr class="rowColor"> 165<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/DatabindContext.html" title="class in com.fasterxml.jackson.databind">DatabindContext</a></td> 166<td class="colLast"> 167<div class="block">Shared base class for <a href="../../../../com/fasterxml/jackson/databind/DeserializationContext.html" title="class in com.fasterxml.jackson.databind"><code>DeserializationContext</code></a> and 168 <a href="../../../../com/fasterxml/jackson/databind/SerializerProvider.html" title="class in com.fasterxml.jackson.databind"><code>SerializerProvider</code></a>, context objects passed through data-binding 169 process.</div> 170</td> 171</tr> 172<tr class="altColor"> 173<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/DeserializationConfig.html" title="class in com.fasterxml.jackson.databind">DeserializationConfig</a></td> 174<td class="colLast"> 175<div class="block">Object that contains baseline configuration for deserialization 176 process.</div> 177</td> 178</tr> 179<tr class="rowColor"> 180<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/DeserializationContext.html" title="class in com.fasterxml.jackson.databind">DeserializationContext</a></td> 181<td class="colLast"> 182<div class="block">Context for the process of deserialization a single root-level value.</div> 183</td> 184</tr> 185<tr class="altColor"> 186<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/InjectableValues.html" title="class in com.fasterxml.jackson.databind">InjectableValues</a></td> 187<td class="colLast"> 188<div class="block">Abstract class that defines API for objects that provide value to 189 "inject" during deserialization.</div> 190</td> 191</tr> 192<tr class="rowColor"> 193<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/InjectableValues.Std.html" title="class in com.fasterxml.jackson.databind">InjectableValues.Std</a></td> 194<td class="colLast"> 195<div class="block">Simple standard implementation which uses a simple Map to 196 store values to inject, identified by simple String keys.</div> 197</td> 198</tr> 199<tr class="altColor"> 200<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/JavaType.html" title="class in com.fasterxml.jackson.databind">JavaType</a></td> 201<td class="colLast"> 202<div class="block">Base class for type token classes used both to contain information 203 and as keys for deserializers.</div> 204</td> 205</tr> 206<tr class="rowColor"> 207<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/JsonDeserializer.html" title="class in com.fasterxml.jackson.databind">JsonDeserializer</a><T></td> 208<td class="colLast"> 209<div class="block">Abstract class that defines API used by <a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.html" title="class in com.fasterxml.jackson.databind"><code>ObjectMapper</code></a> (and 210 other chained <a href="../../../../com/fasterxml/jackson/databind/JsonDeserializer.html" title="class in com.fasterxml.jackson.databind"><code>JsonDeserializer</code></a>s too) to deserialize Objects of 211 arbitrary types from JSON, using provided <code>JsonParser</code>.</div> 212</td> 213</tr> 214<tr class="altColor"> 215<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/JsonDeserializer.None.html" title="class in com.fasterxml.jackson.databind">JsonDeserializer.None</a></td> 216<td class="colLast"> 217<div class="block">This marker class is only to be used with annotations, to 218 indicate that <b>no deserializer is configured</b>.</div> 219</td> 220</tr> 221<tr class="rowColor"> 222<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/JsonMappingException.Reference.html" title="class in com.fasterxml.jackson.databind">JsonMappingException.Reference</a></td> 223<td class="colLast"> 224<div class="block">Simple bean class used to contain references.</div> 225</td> 226</tr> 227<tr class="altColor"> 228<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/JsonNode.html" title="class in com.fasterxml.jackson.databind">JsonNode</a></td> 229<td class="colLast"> 230<div class="block">Base class for all JSON nodes, which form the basis of JSON 231 Tree Model that Jackson implements.</div> 232</td> 233</tr> 234<tr class="rowColor"> 235<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/JsonSerializable.Base.html" title="class in com.fasterxml.jackson.databind">JsonSerializable.Base</a></td> 236<td class="colLast"> 237<div class="block">Base class with minimal implementation, as well as couple of extension methods 238 that core Jackson databinding makes use of.</div> 239</td> 240</tr> 241<tr class="altColor"> 242<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/JsonSerializer.html" title="class in com.fasterxml.jackson.databind">JsonSerializer</a><T></td> 243<td class="colLast"> 244<div class="block">Abstract class that defines API used by <a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.html" title="class in com.fasterxml.jackson.databind"><code>ObjectMapper</code></a> (and 245 other chained <a href="../../../../com/fasterxml/jackson/databind/JsonSerializer.html" title="class in com.fasterxml.jackson.databind"><code>JsonSerializer</code></a>s too) to serialize Objects of 246 arbitrary types into JSON, using provided <code>JsonGenerator</code>.</div> 247</td> 248</tr> 249<tr class="rowColor"> 250<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/JsonSerializer.None.html" title="class in com.fasterxml.jackson.databind">JsonSerializer.None</a></td> 251<td class="colLast"> 252<div class="block">This marker class is only to be used with annotations, to 253 indicate that <b>no serializer is configured</b>.</div> 254</td> 255</tr> 256<tr class="altColor"> 257<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/KeyDeserializer.html" title="class in com.fasterxml.jackson.databind">KeyDeserializer</a></td> 258<td class="colLast"> 259<div class="block">Abstract class that defines API used for deserializing JSON content 260 field names into Java Map keys.</div> 261</td> 262</tr> 263<tr class="rowColor"> 264<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/KeyDeserializer.None.html" title="class in com.fasterxml.jackson.databind">KeyDeserializer.None</a></td> 265<td class="colLast"> 266<div class="block">This marker class is only to be used with annotations, to 267 indicate that <b>no deserializer is configured</b>.</div> 268</td> 269</tr> 270<tr class="altColor"> 271<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/MappingIterator.html" title="class in com.fasterxml.jackson.databind">MappingIterator</a><T></td> 272<td class="colLast"> 273<div class="block">Iterator exposed by <a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.html" title="class in com.fasterxml.jackson.databind"><code>ObjectMapper</code></a> when binding sequence of 274 objects.</div> 275</td> 276</tr> 277<tr class="rowColor"> 278<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/MappingJsonFactory.html" title="class in com.fasterxml.jackson.databind">MappingJsonFactory</a></td> 279<td class="colLast"> 280<div class="block">Sub-class of <code>JsonFactory</code> that will create a proper 281 <code>ObjectCodec</code> to allow seam-less conversions between 282 JSON content and Java objects (POJOs).</div> 283</td> 284</tr> 285<tr class="altColor"> 286<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/Module.html" title="class in com.fasterxml.jackson.databind">Module</a></td> 287<td class="colLast"> 288<div class="block">Simple interface for extensions that can be registered with <a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.html" title="class in com.fasterxml.jackson.databind"><code>ObjectMapper</code></a> 289 to provide a well-defined set of extensions to default functionality; such as 290 support for new data types.</div> 291</td> 292</tr> 293<tr class="rowColor"> 294<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.html" title="class in com.fasterxml.jackson.databind">ObjectMapper</a></td> 295<td class="colLast"> 296<div class="block">ObjectMapper provides functionality for reading and writing JSON, 297 either to and from basic POJOs (Plain Old Java Objects), or to and from 298 a general-purpose JSON Tree Model (<a href="../../../../com/fasterxml/jackson/databind/JsonNode.html" title="class in com.fasterxml.jackson.databind"><code>JsonNode</code></a>), as well as 299 related functionality for performing conversions.</div> 300</td> 301</tr> 302<tr class="altColor"> 303<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.DefaultTypeResolverBuilder.html" title="class in com.fasterxml.jackson.databind">ObjectMapper.DefaultTypeResolverBuilder</a></td> 304<td class="colLast"> 305<div class="block">Customized <a href="../../../../com/fasterxml/jackson/databind/jsontype/TypeResolverBuilder.html" title="interface in com.fasterxml.jackson.databind.jsontype"><code>TypeResolverBuilder</code></a> that provides type resolver builders 306 used with so-called "default typing" 307 (see <a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.html#enableDefaultTyping--"><code>ObjectMapper.enableDefaultTyping()</code></a> for details).</div> 308</td> 309</tr> 310<tr class="rowColor"> 311<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/ObjectReader.html" title="class in com.fasterxml.jackson.databind">ObjectReader</a></td> 312<td class="colLast"> 313<div class="block">Builder object that can be used for per-serialization configuration of 314 deserialization parameters, such as root type to use or object 315 to update (instead of constructing new instance).</div> 316</td> 317</tr> 318<tr class="altColor"> 319<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/ObjectWriter.html" title="class in com.fasterxml.jackson.databind">ObjectWriter</a></td> 320<td class="colLast"> 321<div class="block">Builder object that can be used for per-serialization configuration of 322 serialization parameters, such as JSON View and root type to use.</div> 323</td> 324</tr> 325<tr class="rowColor"> 326<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/ObjectWriter.GeneratorSettings.html" title="class in com.fasterxml.jackson.databind">ObjectWriter.GeneratorSettings</a></td> 327<td class="colLast"> 328<div class="block">Helper class used for containing settings specifically related 329 to (re)configuring <code>JsonGenerator</code> constructed for 330 writing output.</div> 331</td> 332</tr> 333<tr class="altColor"> 334<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/ObjectWriter.Prefetch.html" title="class in com.fasterxml.jackson.databind">ObjectWriter.Prefetch</a></td> 335<td class="colLast"> 336<div class="block">As a minor optimization, we will make an effort to pre-fetch a serializer, 337 or at least relevant <code>TypeSerializer</code>, if given enough 338 information.</div> 339</td> 340</tr> 341<tr class="rowColor"> 342<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/PropertyMetadata.html" title="class in com.fasterxml.jackson.databind">PropertyMetadata</a></td> 343<td class="colLast"> 344<div class="block">Simple container class used for storing "additional" metadata about 345 properties.</div> 346</td> 347</tr> 348<tr class="altColor"> 349<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/PropertyName.html" title="class in com.fasterxml.jackson.databind">PropertyName</a></td> 350<td class="colLast"> 351<div class="block">Simple value class used for containing names of properties as defined 352 by annotations (and possibly other configuration sources).</div> 353</td> 354</tr> 355<tr class="rowColor"> 356<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/PropertyNamingStrategy.html" title="class in com.fasterxml.jackson.databind">PropertyNamingStrategy</a></td> 357<td class="colLast"> 358<div class="block">Class that defines how names of JSON properties ("external names") 359 are derived from names of POJO methods and fields ("internal names"), 360 in cases where they are not 361 auto-detected and no explicit annotations exist for naming.</div> 362</td> 363</tr> 364<tr class="altColor"> 365<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/PropertyNamingStrategy.LowerCaseStrategy.html" title="class in com.fasterxml.jackson.databind">PropertyNamingStrategy.LowerCaseStrategy</a></td> 366<td class="colLast"> 367<div class="block">Simple strategy where external name simply only uses lower-case characters, 368 and no separators.</div> 369</td> 370</tr> 371<tr class="rowColor"> 372<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/PropertyNamingStrategy.LowerCaseWithUnderscoresStrategy.html" title="class in com.fasterxml.jackson.databind">PropertyNamingStrategy.LowerCaseWithUnderscoresStrategy</a></td> 373<td class="colLast"> 374<div class="block">A <a href="../../../../com/fasterxml/jackson/databind/PropertyNamingStrategy.html" title="class in com.fasterxml.jackson.databind"><code>PropertyNamingStrategy</code></a> that translates typical camel case Java 375 property names to lower case JSON element names, separated by 376 underscores.</div> 377</td> 378</tr> 379<tr class="altColor"> 380<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/PropertyNamingStrategy.PascalCaseStrategy.html" title="class in com.fasterxml.jackson.databind">PropertyNamingStrategy.PascalCaseStrategy</a></td> 381<td class="colLast"> 382<div class="block">A <a href="../../../../com/fasterxml/jackson/databind/PropertyNamingStrategy.html" title="class in com.fasterxml.jackson.databind"><code>PropertyNamingStrategy</code></a> that translates typical camelCase Java 383 property names to PascalCase JSON element names (i.e., with a capital 384 first letter).</div> 385</td> 386</tr> 387<tr class="rowColor"> 388<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/PropertyNamingStrategy.PropertyNamingStrategyBase.html" title="class in com.fasterxml.jackson.databind">PropertyNamingStrategy.PropertyNamingStrategyBase</a></td> 389<td class="colLast"> </td> 390</tr> 391<tr class="altColor"> 392<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/SequenceWriter.html" title="class in com.fasterxml.jackson.databind">SequenceWriter</a></td> 393<td class="colLast"> 394<div class="block">Writer class similar to <a href="../../../../com/fasterxml/jackson/databind/ObjectWriter.html" title="class in com.fasterxml.jackson.databind"><code>ObjectWriter</code></a>, except that it can be used 395 for writing sequences of values, not just a single value.</div> 396</td> 397</tr> 398<tr class="rowColor"> 399<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/SerializationConfig.html" title="class in com.fasterxml.jackson.databind">SerializationConfig</a></td> 400<td class="colLast"> 401<div class="block">Object that contains baseline configuration for serialization 402 process.</div> 403</td> 404</tr> 405<tr class="altColor"> 406<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/SerializerProvider.html" title="class in com.fasterxml.jackson.databind">SerializerProvider</a></td> 407<td class="colLast"> 408<div class="block">Class that defines API used by <a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.html" title="class in com.fasterxml.jackson.databind"><code>ObjectMapper</code></a> and 409 <a href="../../../../com/fasterxml/jackson/databind/JsonSerializer.html" title="class in com.fasterxml.jackson.databind"><code>JsonSerializer</code></a>s to obtain serializers capable of serializing 410 instances of specific types; as well as the default implementation 411 of the functionality.</div> 412</td> 413</tr> 414</tbody> 415</table> 416</li> 417<li class="blockList"> 418<table class="typeSummary" border="0" cellpadding="3" cellspacing="0" summary="Enum Summary table, listing enums, and an explanation"> 419<caption><span>Enum Summary</span><span class="tabEnd"> </span></caption> 420<tr> 421<th class="colFirst" scope="col">Enum</th> 422<th class="colLast" scope="col">Description</th> 423</tr> 424<tbody> 425<tr class="altColor"> 426<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/AnnotationIntrospector.ReferenceProperty.Type.html" title="enum in com.fasterxml.jackson.databind">AnnotationIntrospector.ReferenceProperty.Type</a></td> 427<td class="colLast"> </td> 428</tr> 429<tr class="rowColor"> 430<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/DeserializationFeature.html" title="enum in com.fasterxml.jackson.databind">DeserializationFeature</a></td> 431<td class="colLast"> 432<div class="block">Enumeration that defines simple on/off features that affect 433 the way Java objects are deserialized from JSON</div> 434</td> 435</tr> 436<tr class="altColor"> 437<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/MapperFeature.html" title="enum in com.fasterxml.jackson.databind">MapperFeature</a></td> 438<td class="colLast"> 439<div class="block">Enumeration that defines simple on/off features to set 440 for <a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.html" title="class in com.fasterxml.jackson.databind"><code>ObjectMapper</code></a>, and accessible (but not changeable) 441 via <a href="../../../../com/fasterxml/jackson/databind/ObjectReader.html" title="class in com.fasterxml.jackson.databind"><code>ObjectReader</code></a> and <a href="../../../../com/fasterxml/jackson/databind/ObjectWriter.html" title="class in com.fasterxml.jackson.databind"><code>ObjectWriter</code></a> (as well as 442 through various convenience methods through context objects).</div> 443</td> 444</tr> 445<tr class="rowColor"> 446<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.DefaultTyping.html" title="enum in com.fasterxml.jackson.databind">ObjectMapper.DefaultTyping</a></td> 447<td class="colLast"> 448<div class="block">Enumeration used with <a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.html#enableDefaultTyping--"><code>ObjectMapper.enableDefaultTyping()</code></a> 449 to specify what kind of types (classes) default typing should 450 be used for.</div> 451</td> 452</tr> 453<tr class="altColor"> 454<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/SerializationFeature.html" title="enum in com.fasterxml.jackson.databind">SerializationFeature</a></td> 455<td class="colLast"> 456<div class="block">Enumeration that defines simple on/off features that affect 457 the way Java objects are serialized.</div> 458</td> 459</tr> 460</tbody> 461</table> 462</li> 463<li class="blockList"> 464<table class="typeSummary" border="0" cellpadding="3" cellspacing="0" summary="Exception Summary table, listing exceptions, and an explanation"> 465<caption><span>Exception Summary</span><span class="tabEnd"> </span></caption> 466<tr> 467<th class="colFirst" scope="col">Exception</th> 468<th class="colLast" scope="col">Description</th> 469</tr> 470<tbody> 471<tr class="altColor"> 472<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/JsonMappingException.html" title="class in com.fasterxml.jackson.databind">JsonMappingException</a></td> 473<td class="colLast"> 474<div class="block">Checked exception used to signal fatal problems with mapping of 475 content.</div> 476</td> 477</tr> 478<tr class="rowColor"> 479<td class="colFirst"><a href="../../../../com/fasterxml/jackson/databind/RuntimeJsonMappingException.html" title="class in com.fasterxml.jackson.databind">RuntimeJsonMappingException</a></td> 480<td class="colLast"> 481<div class="block">Wrapper used when interface does not allow throwing a checked 482 <a href="../../../../com/fasterxml/jackson/databind/JsonMappingException.html" title="class in com.fasterxml.jackson.databind"><code>JsonMappingException</code></a></div> 483</td> 484</tr> 485</tbody> 486</table> 487</li> 488</ul> 489<a name="package.description"> 490<!-- --> 491</a> 492<h2 title="Package com.fasterxml.jackson.databind Description">Package com.fasterxml.jackson.databind Description</h2> 493<div class="block">Basic data binding (mapping) functionality that 494allows for reading JSON content into Java Objects (POJOs) 495and JSON Trees (<a href="../../../../com/fasterxml/jackson/databind/JsonNode.html" title="class in com.fasterxml.jackson.databind"><code>JsonNode</code></a>), as well as 496writing Java Objects and trees as JSON. 497Reading and writing (as well as related additional functionality) is accessed through 498<a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.html" title="class in com.fasterxml.jackson.databind"><code>ObjectMapper</code></a>, 499<a href="../../../../com/fasterxml/jackson/databind/ObjectReader.html" title="class in com.fasterxml.jackson.databind"><code>ObjectReader</code></a> and 500<a href="../../../../com/fasterxml/jackson/databind/ObjectWriter.html" title="class in com.fasterxml.jackson.databind"><code>ObjectWriter</code></a> 501 classes. 502 In addition to reading and writing JSON content, it is also possible to use the 503 general databinding functionality for many other data formats, using 504 Jackson extension modules that provide such support: if so, you typically 505 simply construct an <a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.html" title="class in com.fasterxml.jackson.databind"><code>ObjectMapper</code></a> with 506 different underlying streaming parser, generator implementation. 507<p> 508The main starting point for operations is <a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.html" title="class in com.fasterxml.jackson.databind"><code>ObjectMapper</code></a>, 509which can be used either directly (via multiple overloaded 510<code>readValue</code>, 511<code>readTree</code>, 512<code>writeValue</code> and 513<code>writeTree</code> methods, or it can be used as a configurable factory for constructing 514fully immutable, thread-safe and reusable <a href="../../../../com/fasterxml/jackson/databind/ObjectReader.html" title="class in com.fasterxml.jackson.databind"><code>ObjectReader</code></a> 515and <a href="../../../../com/fasterxml/jackson/databind/ObjectWriter.html" title="class in com.fasterxml.jackson.databind"><code>ObjectWriter</code></a> objects. 516<p> 517In addition to simple reading and writing of JSON as POJOs or JSON trees (represented as 518<a href="../../../../com/fasterxml/jackson/databind/JsonNode.html" title="class in com.fasterxml.jackson.databind"><code>JsonNode</code></a>, and configurability needed to change aspects 519of reading/writing, mapper contains additional functionality such as: 520<ul> 521 <li>Value conversions using <a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.html#convertValue-java.lang.Object-java.lang.Class-"><code>ObjectMapper.convertValue(Object, Class)</code></a>, 522 <a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.html#valueToTree-java.lang.Object-"><code>ObjectMapper.valueToTree(Object)</code></a> and 523 <a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.html#treeToValue-com.fasterxml.jackson.core.TreeNode-java.lang.Class-"><code>ObjectMapper.treeToValue(com.fasterxml.jackson.core.TreeNode, Class)</code></a> methods. 524 </li> 525 <li>Type introspection needed for things like generation of Schemas (like JSON Schema, Avro Schema, or protoc 526 definitions), using <a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.html#acceptJsonFormatVisitor-java.lang.Class-com.fasterxml.jackson.databind.jsonFormatVisitors.JsonFormatVisitorWrapper-"><code>ObjectMapper.acceptJsonFormatVisitor(Class, com.fasterxml.jackson.databind.jsonFormatVisitors.JsonFormatVisitorWrapper)</code></a> 527 (note: actual handles are usually provided by various Jackson modules: mapper simply initiates calling of 528 callbacks, based on serializers registered) 529 </li> 530</ul> 531<p> 532Simplest usage is of form: 533<pre> 534 final ObjectMapper mapper = new ObjectMapper(); // can use static singleton, inject: just make sure to reuse! 535 MyValue value = new MyValue(); 536 // ... and configure 537 File newState = new File("my-stuff.json"); 538 mapper.writeValue(newState, value); // writes JSON serialization of MyValue instance 539 // or, read 540 MyValue older = mapper.readValue(new File("my-older-stuff.json"), MyValue.class); 541 542 // Or if you prefer JSON Tree representation: 543 JsonNode root = mapper.readTree(newState); 544 // and find values by, for example, using a <code>JsonPointer</code> expression: 545 int age = root.at("/personal/age").getValueAsInt(); 546</pre> 547<p> 548For more usage, refer to 549<a href="../../../../com/fasterxml/jackson/databind/ObjectMapper.html" title="class in com.fasterxml.jackson.databind"><code>ObjectMapper</code></a>, 550<a href="../../../../com/fasterxml/jackson/databind/ObjectReader.html" title="class in com.fasterxml.jackson.databind"><code>ObjectReader</code></a> and 551<a href="../../../../com/fasterxml/jackson/databind/ObjectWriter.html" title="class in com.fasterxml.jackson.databind"><code>ObjectWriter</code></a> 552Javadocs.</div> 553</div> 554<!-- ======= START OF BOTTOM NAVBAR ====== --> 555<div class="bottomNav"><a name="navbar.bottom"> 556<!-- --> 557</a> 558<div class="skipNav"><a href="#skip.navbar.bottom" title="Skip navigation links">Skip navigation links</a></div> 559<a name="navbar.bottom.firstrow"> 560<!-- --> 561</a> 562<ul class="navList" title="Navigation"> 563<li><a href="../../../../overview-summary.html">Overview</a></li> 564<li class="navBarCell1Rev">Package</li> 565<li>Class</li> 566<li><a href="package-use.html">Use</a></li> 567<li><a href="package-tree.html">Tree</a></li> 568<li><a href="../../../../deprecated-list.html">Deprecated</a></li> 569<li><a href="../../../../index-all.html">Index</a></li> 570<li><a href="../../../../help-doc.html">Help</a></li> 571</ul> 572</div> 573<div class="subNav"> 574<ul class="navList"> 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