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 (version 1.7.0_25) on Thu Jan 01 17:43:55 PST 2015 --> 6<meta http-equiv="Content-Type" content="text/html" charset="UTF-8"> 7<title>ObjectWriter.Prefetch (jackson-databind 2.5.0 API)</title> 8<meta name="date" content="2015-01-01"> 9<link rel="stylesheet" type="text/css" href="../../../../stylesheet.css" title="Style"> 10</head> 11<body> 12<script type="text/javascript"><!-- 13 if (location.href.indexOf('is-external=true') == -1) { 14 parent.document.title="ObjectWriter.Prefetch (jackson-databind 2.5.0 API)"; 15 } 16//--> 17</script> 18<noscript> 19<div>JavaScript is disabled on your browser.</div> 20</noscript> 21<!-- ========= START OF TOP NAVBAR ======= --> 22<div class="topNav"><a name="navbar_top"> 23<!-- --> 24</a><a href="#skip-navbar_top" title="Skip navigation links"></a><a name="navbar_top_firstrow"> 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name="skip-navbar_top"> 78<!-- --> 79</a></div> 80<!-- ========= END OF TOP NAVBAR ========= --> 81<!-- ======== START OF CLASS DATA ======== --> 82<div class="header"> 83<div class="subTitle">com.fasterxml.jackson.databind</div> 84<h2 title="Class ObjectWriter.Prefetch" class="title">Class ObjectWriter.Prefetch</h2> 85</div> 86<div class="contentContainer"> 87<ul class="inheritance"> 88<li><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li> 89<li> 90<ul class="inheritance"> 91<li>com.fasterxml.jackson.databind.ObjectWriter.Prefetch</li> 92</ul> 93</li> 94</ul> 95<div class="description"> 96<ul class="blockList"> 97<li class="blockList"> 98<dl> 99<dt>All Implemented Interfaces:</dt> 100<dd><a href="http://docs.oracle.com/javase/6/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a></dd> 101</dl> 102<dl> 103<dt>Enclosing class:</dt> 104<dd><a href="../../../../com/fasterxml/jackson/databind/ObjectWriter.html" title="class in com.fasterxml.jackson.databind">ObjectWriter</a></dd> 105</dl> 106<hr> 107<br> 108<pre>public static final class <span class="strong">ObjectWriter.Prefetch</span> 109extends <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> 110implements <a href="http://docs.oracle.com/javase/6/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a></pre> 111<div class="block">As a minor optimization, we will make an effort to pre-fetch a serializer, 112 or at least relevant <code>TypeSerializer</code>, if given enough 113 information.</div> 114<dl><dt><span class="strong">Since:</span></dt> 115 <dd>2.5</dd> 116<dt><span class="strong">See Also:</span></dt><dd><a href="../../../../serialized-form.html#com.fasterxml.jackson.databind.ObjectWriter.Prefetch">Serialized Form</a></dd></dl> 117</li> 118</ul> 119</div> 120<div class="summary"> 121<ul class="blockList"> 122<li class="blockList"> 123<!-- =========== FIELD SUMMARY =========== --> 124<ul class="blockList"> 125<li class="blockList"><a name="field_summary"> 126<!-- --> 127</a> 128<h3>Field Summary</h3> 129<table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Field Summary table, listing fields, and an explanation"> 130<caption><span>Fields</span><span class="tabEnd"> </span></caption> 131<tr> 132<th class="colFirst" scope="col">Modifier and Type</th> 133<th class="colLast" scope="col">Field and Description</th> 134</tr> 135<tr class="altColor"> 136<td class="colFirst"><code>static <a href="../../../../com/fasterxml/jackson/databind/ObjectWriter.Prefetch.html" title="class in com.fasterxml.jackson.databind">ObjectWriter.Prefetch</a></code></td> 137<td class="colLast"><code><strong><a href="../../../../com/fasterxml/jackson/databind/ObjectWriter.Prefetch.html#empty">empty</a></strong></code> </td> 138</tr> 139<tr class="rowColor"> 140<td class="colFirst"><code><a href="../../../../com/fasterxml/jackson/databind/JavaType.html" title="class in com.fasterxml.jackson.databind">JavaType</a></code></td> 141<td class="colLast"><code><strong><a href="../../../../com/fasterxml/jackson/databind/ObjectWriter.Prefetch.html#rootType">rootType</a></strong></code> 142<div class="block">Specified root serialization type to use; can be same 143 as runtime type, but usually one of its super types</div> 144</td> 145</tr> 146<tr class="altColor"> 147<td class="colFirst"><code><a href="../../../../com/fasterxml/jackson/databind/jsontype/TypeSerializer.html" title="class in com.fasterxml.jackson.databind.jsontype">TypeSerializer</a></code></td> 148<td class="colLast"><code><strong><a href="../../../../com/fasterxml/jackson/databind/ObjectWriter.Prefetch.html#typeSerializer">typeSerializer</a></strong></code> 149<div class="block">When dealing with polymorphic types, we can not pre-fetch 150 serializer, but we can pre-fetch <a href="../../../../com/fasterxml/jackson/databind/jsontype/TypeSerializer.html" title="class in com.fasterxml.jackson.databind.jsontype"><code>TypeSerializer</code></a>.</div> 151</td> 152</tr> 153<tr class="rowColor"> 154<td class="colFirst"><code><a href="../../../../com/fasterxml/jackson/databind/JsonSerializer.html" title="class in com.fasterxml.jackson.databind">JsonSerializer</a><<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>></code></td> 155<td class="colLast"><code><strong><a href="../../../../com/fasterxml/jackson/databind/ObjectWriter.Prefetch.html#valueSerializer">valueSerializer</a></strong></code> 156<div class="block">We may pre-fetch serializer if <a href="../../../../com/fasterxml/jackson/databind/ObjectWriter.Prefetch.html#rootType"><code>rootType</code></a> 157 is known, and if so, reuse it afterwards.</div> 158</td> 159</tr> 160</table> 161</li> 162</ul> 163<!-- ========== METHOD SUMMARY =========== --> 164<ul class="blockList"> 165<li class="blockList"><a name="method_summary"> 166<!-- --> 167</a> 168<h3>Method Summary</h3> 169<table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> 170<caption><span>Methods</span><span class="tabEnd"> </span></caption> 171<tr> 172<th class="colFirst" scope="col">Modifier and Type</th> 173<th class="colLast" scope="col">Method and Description</th> 174</tr> 175<tr class="altColor"> 176<td class="colFirst"><code>static <a href="../../../../com/fasterxml/jackson/databind/ObjectWriter.Prefetch.html" title="class in com.fasterxml.jackson.databind">ObjectWriter.Prefetch</a></code></td> 177<td class="colLast"><code><strong><a href="../../../../com/fasterxml/jackson/databind/ObjectWriter.Prefetch.html#construct(com.fasterxml.jackson.databind.JavaType, com.fasterxml.jackson.databind.JsonSerializer)">construct</a></strong>(<a href="../../../../com/fasterxml/jackson/databind/JavaType.html" title="class in com.fasterxml.jackson.databind">JavaType</a> type, 178 <a href="../../../../com/fasterxml/jackson/databind/JsonSerializer.html" title="class in com.fasterxml.jackson.databind">JsonSerializer</a><<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>> ser)</code> </td> 179</tr> 180<tr class="rowColor"> 181<td class="colFirst"><code>static <a href="../../../../com/fasterxml/jackson/databind/ObjectWriter.Prefetch.html" title="class in com.fasterxml.jackson.databind">ObjectWriter.Prefetch</a></code></td> 182<td class="colLast"><code><strong><a href="../../../../com/fasterxml/jackson/databind/ObjectWriter.Prefetch.html#construct(com.fasterxml.jackson.databind.JavaType, com.fasterxml.jackson.databind.jsontype.TypeSerializer)">construct</a></strong>(<a href="../../../../com/fasterxml/jackson/databind/JavaType.html" title="class in com.fasterxml.jackson.databind">JavaType</a> type, 183 <a href="../../../../com/fasterxml/jackson/databind/jsontype/TypeSerializer.html" title="class in com.fasterxml.jackson.databind.jsontype">TypeSerializer</a> typeSer)</code> </td> 184</tr> 185<tr class="altColor"> 186<td class="colFirst"><code>boolean</code></td> 187<td class="colLast"><code><strong><a href="../../../../com/fasterxml/jackson/databind/ObjectWriter.Prefetch.html#hasSerializer()">hasSerializer</a></strong>()</code> </td> 188</tr> 189</table> 190<ul class="blockList"> 191<li class="blockList"><a name="methods_inherited_from_class_java.lang.Object"> 192<!-- --> 193</a> 194<h3>Methods inherited from class java.lang.<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3> 195<code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</a></code></li> 196</ul> 197</li> 198</ul> 199</li> 200</ul> 201</div> 202<div class="details"> 203<ul class="blockList"> 204<li class="blockList"> 205<!-- ============ FIELD DETAIL =========== --> 206<ul class="blockList"> 207<li class="blockList"><a name="field_detail"> 208<!-- --> 209</a> 210<h3>Field Detail</h3> 211<a name="empty"> 212<!-- --> 213</a> 214<ul class="blockList"> 215<li class="blockList"> 216<h4>empty</h4> 217<pre>public static final <a href="../../../../com/fasterxml/jackson/databind/ObjectWriter.Prefetch.html" title="class in com.fasterxml.jackson.databind">ObjectWriter.Prefetch</a> empty</pre> 218</li> 219</ul> 220<a name="rootType"> 221<!-- --> 222</a> 223<ul class="blockList"> 224<li class="blockList"> 225<h4>rootType</h4> 226<pre>public final <a href="../../../../com/fasterxml/jackson/databind/JavaType.html" title="class in com.fasterxml.jackson.databind">JavaType</a> rootType</pre> 227<div class="block">Specified root serialization type to use; can be same 228 as runtime type, but usually one of its super types</div> 229</li> 230</ul> 231<a name="valueSerializer"> 232<!-- --> 233</a> 234<ul class="blockList"> 235<li class="blockList"> 236<h4>valueSerializer</h4> 237<pre>public final <a href="../../../../com/fasterxml/jackson/databind/JsonSerializer.html" title="class in com.fasterxml.jackson.databind">JsonSerializer</a><<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>> valueSerializer</pre> 238<div class="block">We may pre-fetch serializer if <a href="../../../../com/fasterxml/jackson/databind/ObjectWriter.Prefetch.html#rootType"><code>rootType</code></a> 239 is known, and if so, reuse it afterwards. 240 This allows avoiding further serializer lookups and increases 241 performance a bit on cases where readers are reused.</div> 242</li> 243</ul> 244<a name="typeSerializer"> 245<!-- --> 246</a> 247<ul class="blockListLast"> 248<li class="blockList"> 249<h4>typeSerializer</h4> 250<pre>public final <a href="../../../../com/fasterxml/jackson/databind/jsontype/TypeSerializer.html" title="class in com.fasterxml.jackson.databind.jsontype">TypeSerializer</a> typeSerializer</pre> 251<div class="block">When dealing with polymorphic types, we can not pre-fetch 252 serializer, but we can pre-fetch <a href="../../../../com/fasterxml/jackson/databind/jsontype/TypeSerializer.html" title="class in com.fasterxml.jackson.databind.jsontype"><code>TypeSerializer</code></a>.</div> 253</li> 254</ul> 255</li> 256</ul> 257<!-- ============ METHOD DETAIL ========== --> 258<ul class="blockList"> 259<li class="blockList"><a name="method_detail"> 260<!-- --> 261</a> 262<h3>Method Detail</h3> 263<a name="construct(com.fasterxml.jackson.databind.JavaType, com.fasterxml.jackson.databind.JsonSerializer)"> 264<!-- --> 265</a> 266<ul class="blockList"> 267<li class="blockList"> 268<h4>construct</h4> 269<pre>public static <a href="../../../../com/fasterxml/jackson/databind/ObjectWriter.Prefetch.html" title="class in com.fasterxml.jackson.databind">ObjectWriter.Prefetch</a> construct(<a href="../../../../com/fasterxml/jackson/databind/JavaType.html" title="class in com.fasterxml.jackson.databind">JavaType</a> type, 270 <a href="../../../../com/fasterxml/jackson/databind/JsonSerializer.html" title="class in com.fasterxml.jackson.databind">JsonSerializer</a><<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>> ser)</pre> 271</li> 272</ul> 273<a name="construct(com.fasterxml.jackson.databind.JavaType, com.fasterxml.jackson.databind.jsontype.TypeSerializer)"> 274<!-- --> 275</a> 276<ul class="blockList"> 277<li class="blockList"> 278<h4>construct</h4> 279<pre>public static <a href="../../../../com/fasterxml/jackson/databind/ObjectWriter.Prefetch.html" title="class in com.fasterxml.jackson.databind">ObjectWriter.Prefetch</a> construct(<a href="../../../../com/fasterxml/jackson/databind/JavaType.html" title="class in com.fasterxml.jackson.databind">JavaType</a> type, 280 <a href="../../../../com/fasterxml/jackson/databind/jsontype/TypeSerializer.html" title="class in com.fasterxml.jackson.databind.jsontype">TypeSerializer</a> typeSer)</pre> 281</li> 282</ul> 283<a name="hasSerializer()"> 284<!-- --> 285</a> 286<ul class="blockListLast"> 287<li class="blockList"> 288<h4>hasSerializer</h4> 289<pre>public boolean hasSerializer()</pre> 290</li> 291</ul> 292</li> 293</ul> 294</li> 295</ul> 296</div> 297</div> 298<!-- ========= END OF CLASS DATA ========= --> 299<!-- ======= START OF BOTTOM NAVBAR ====== --> 300<div class="bottomNav"><a name="navbar_bottom"> 301<!-- --> 302</a><a href="#skip-navbar_bottom" title="Skip navigation links"></a><a name="navbar_bottom_firstrow"> 303<!-- --> 304</a> 305<ul class="navList" title="Navigation"> 306<li><a href="../../../../overview-summary.html">Overview</a></li> 307<li><a href="package-summary.html">Package</a></li> 308<li class="navBarCell1Rev">Class</li> 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