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for example, bean deserializers use this callback 115 to locate deserializers for contained field types. 116 Main reason for using a callback (instead of trying to resolve dependencies 117 immediately) is to make it possible to cleanly handle self-references; 118 otherwise it would be easy to get into infinite recursion. 119<p> 120 Note that <a href="../../../../../com/fasterxml/jackson/databind/deser/ResolvableDeserializer.html#resolve-com.fasterxml.jackson.databind.DeserializationContext-"><code>resolve(com.fasterxml.jackson.databind.DeserializationContext)</code></a> method does NOT allow returning anything 121 (specifically, a new deserializer instance): reason for this is that 122 allowing this would not work with proper handling of cyclic dependencies, 123 which are resolved by two-phase processing, where initially constructed 124 deserializer is added as known deserializer, and only after this 125 resolution is done. Resolution is the part that results in lookups for 126 dependant deserializers, which may include handling references to 127 deserializer itself. 128<p> 129 Note that in cases where deserializer needs both contextualization and 130 resolution -- that is, implements both this interface and <a href="../../../../../com/fasterxml/jackson/databind/deser/ContextualDeserializer.html" title="interface in com.fasterxml.jackson.databind.deser"><code>ContextualDeserializer</code></a> 131 -- resolution via this interface occurs first, and contextual 132 resolution (using <a href="../../../../../com/fasterxml/jackson/databind/deser/ContextualDeserializer.html" title="interface in com.fasterxml.jackson.databind.deser"><code>ContextualDeserializer</code></a>) later on.</div> 133</li> 134</ul> 135</div> 136<div class="summary"> 137<ul class="blockList"> 138<li class="blockList"> 139<!-- ========== METHOD SUMMARY =========== --> 140<ul class="blockList"> 141<li class="blockList"><a name="method.summary"> 142<!-- --> 143</a> 144<h3>Method Summary</h3> 145<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> 146<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd"> </span></span></caption> 147<tr> 148<th class="colFirst" scope="col">Modifier and Type</th> 149<th class="colLast" scope="col">Method and Description</th> 150</tr> 151<tr id="i0" class="altColor"> 152<td class="colFirst"><code>void</code></td> 153<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../com/fasterxml/jackson/databind/deser/ResolvableDeserializer.html#resolve-com.fasterxml.jackson.databind.DeserializationContext-">resolve</a></span>(<a href="../../../../../com/fasterxml/jackson/databind/DeserializationContext.html" title="class in com.fasterxml.jackson.databind">DeserializationContext</a> ctxt)</code> 154<div class="block">Method called after deserializer instance has been constructed 155 (and registered as necessary by provider objects), 156 but before it has returned it to the caller.</div> 157</td> 158</tr> 159</table> 160</li> 161</ul> 162</li> 163</ul> 164</div> 165<div class="details"> 166<ul class="blockList"> 167<li class="blockList"> 168<!-- ============ METHOD DETAIL ========== --> 169<ul class="blockList"> 170<li class="blockList"><a name="method.detail"> 171<!-- --> 172</a> 173<h3>Method Detail</h3> 174<a name="resolve-com.fasterxml.jackson.databind.DeserializationContext-"> 175<!-- --> 176</a> 177<ul class="blockListLast"> 178<li class="blockList"> 179<h4>resolve</h4> 180<pre>void resolve(<a href="../../../../../com/fasterxml/jackson/databind/DeserializationContext.html" title="class in com.fasterxml.jackson.databind">DeserializationContext</a> ctxt) 181 throws <a href="../../../../../com/fasterxml/jackson/databind/JsonMappingException.html" title="class in com.fasterxml.jackson.databind">JsonMappingException</a></pre> 182<div class="block">Method called after deserializer instance has been constructed 183 (and registered as necessary by provider objects), 184 but before it has returned it to the caller. 185 Called object can then resolve its dependencies to other types, 186 including self-references (direct or indirect).</div> 187<dl> 188<dt><span class="paramLabel">Parameters:</span></dt> 189<dd><code>ctxt</code> - Context to use for accessing configuration, resolving 190 secondary deserializers</dd> 191<dt><span class="throwsLabel">Throws:</span></dt> 192<dd><code><a href="../../../../../com/fasterxml/jackson/databind/JsonMappingException.html" title="class in com.fasterxml.jackson.databind">JsonMappingException</a></code></dd> 193</dl> 194</li> 195</ul> 196</li> 197</ul> 198</li> 199</ul> 200</div> 201</div> 202<!-- ========= END OF CLASS DATA ========= --> 203<!-- ======= START OF BOTTOM NAVBAR ====== --> 204<div class="bottomNav"><a name="navbar.bottom"> 205<!-- --> 206</a> 207<div class="skipNav"><a href="#skip.navbar.bottom" title="Skip navigation links">Skip navigation links</a></div> 208<a name="navbar.bottom.firstrow"> 209<!-- --> 210</a> 211<ul class="navList" title="Navigation"> 212<li><a href="../../../../../overview-summary.html">Overview</a></li> 213<li><a href="package-summary.html">Package</a></li> 214<li class="navBarCell1Rev">Class</li> 215<li><a href="class-use/ResolvableDeserializer.html">Use</a></li> 216<li><a href="package-tree.html">Tree</a></li> 217<li><a href="../../../../../deprecated-list.html">Deprecated</a></li> 218<li><a href="../../../../../index-all.html">Index</a></li> 219<li><a href="../../../../../help-doc.html">Help</a></li> 220</ul> 221</div> 222<div class="subNav"> 223<ul class="navList"> 224<li><a href="../../../../../com/fasterxml/jackson/databind/deser/NullValueProvider.html" title="interface in com.fasterxml.jackson.databind.deser"><span class="typeNameLink">Prev Class</span></a></li> 225<li><a href="../../../../../com/fasterxml/jackson/databind/deser/SettableAnyProperty.html" title="class in com.fasterxml.jackson.databind.deser"><span class="typeNameLink">Next Class</span></a></li> 226</ul> 227<ul class="navList"> 228<li><a href="../../../../../index.html?com/fasterxml/jackson/databind/deser/ResolvableDeserializer.html" target="_top">Frames</a></li> 229<li><a href="ResolvableDeserializer.html" target="_top">No Frames</a></li> 230</ul> 231<ul class="navList" id="allclasses_navbar_bottom"> 232<li><a href="../../../../../allclasses-noframe.html">All Classes</a></li> 233</ul> 234<div> 235<script type="text/javascript"><!-- 236 allClassesLink = document.getElementById("allclasses_navbar_bottom"); 237 if(window==top) { 238 allClassesLink.style.display = "block"; 239 } 240 else { 241 allClassesLink.style.display = "none"; 242 } 243 //--> 244</script> 245</div> 246<div> 247<ul class="subNavList"> 248<li>Summary: </li> 249<li>Nested | </li> 250<li>Field | </li> 251<li>Constr | </li> 252<li><a href="#method.summary">Method</a></li> 253</ul> 254<ul class="subNavList"> 255<li>Detail: </li> 256<li>Field | </li> 257<li>Constr | </li> 258<li><a href="#method.detail">Method</a></li> 259</ul> 260</div> 261<a name="skip.navbar.bottom"> 262<!-- --> 263</a></div> 264<!-- ======== END OF BOTTOM NAVBAR ======= --> 265<p class="legalCopy"><small>Copyright © 2008–2020 <a href="http://fasterxml.com/">FasterXML</a>. 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