1<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 2<!--NewPage--> 3<HTML> 4<HEAD> 5<!-- Generated by javadoc (build 1.6.0_35) on Fri Oct 05 20:53:30 PDT 2012 --> 6<META http-equiv="Content-Type" content="text/html; charset=UTF-8"> 7<TITLE> 8ObjectIdGenerator (Jackson-annotations 2.1.0 API) 9</TITLE> 10 11<META NAME="date" CONTENT="2012-10-05"> 12 13<LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style"> 14 15<SCRIPT type="text/javascript"> 16function windowTitle() 17{ 18 if (location.href.indexOf('is-external=true') == -1) { 19 parent.document.title="ObjectIdGenerator (Jackson-annotations 2.1.0 API)"; 20 } 21} 22</SCRIPT> 23<NOSCRIPT> 24</NOSCRIPT> 25 26</HEAD> 27 28<BODY BGCOLOR="white" onload="windowTitle();"> 29<HR> 30 31 32<!-- ========= START OF TOP NAVBAR ======= --> 33<A NAME="navbar_top"><!-- --></A> 34<A HREF="#skip-navbar_top" title="Skip navigation links"></A> 35<TABLE BORDER="0" 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HREF="#method_detail">METHOD</A></FONT></TD> 91</TR> 92</TABLE> 93<A NAME="skip-navbar_top"></A> 94<!-- ========= END OF TOP NAVBAR ========= --> 95 96<HR> 97<!-- ======== START OF CLASS DATA ======== --> 98<H2> 99<FONT SIZE="-1"> 100com.fasterxml.jackson.annotation</FONT> 101<BR> 102Class ObjectIdGenerator<T></H2> 103<PRE> 104<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</A> 105 <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>com.fasterxml.jackson.annotation.ObjectIdGenerator<T></B> 106</PRE> 107<DL> 108<DT><DT><B>Type Parameters:</B><DD><CODE>T</CODE> - Type of Object Identifiers produced.</DL> 109<DL> 110<DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../../com/fasterxml/jackson/annotation/ObjectIdGenerators.IntSequenceGenerator.html" title="class in com.fasterxml.jackson.annotation">ObjectIdGenerators.IntSequenceGenerator</A>, <A HREF="../../../../com/fasterxml/jackson/annotation/ObjectIdGenerators.None.html" title="class in com.fasterxml.jackson.annotation">ObjectIdGenerators.None</A>, <A HREF="../../../../com/fasterxml/jackson/annotation/ObjectIdGenerators.PropertyGenerator.html" title="class in com.fasterxml.jackson.annotation">ObjectIdGenerators.PropertyGenerator</A>, <A HREF="../../../../com/fasterxml/jackson/annotation/ObjectIdGenerators.UUIDGenerator.html" title="class in com.fasterxml.jackson.annotation">ObjectIdGenerators.UUIDGenerator</A></DD> 111</DL> 112<HR> 113<DL> 114<DT><PRE>public abstract class <B>ObjectIdGenerator<T></B><DT>extends <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></DL> 115</PRE> 116 117<P> 118Definition of API used for constructing Object Identifiers 119 (as annotated using <A HREF="../../../../com/fasterxml/jackson/annotation/JsonIdentityInfo.html" title="annotation in com.fasterxml.jackson.annotation"><CODE>JsonIdentityInfo</CODE></A>). 120 Also defines factory methods used for creating instances 121 for serialization, deserialization. 122<P> 123 124<P> 125<HR> 126 127<P> 128<!-- ======== NESTED CLASS SUMMARY ======== --> 129 130<A NAME="nested_class_summary"><!-- --></A> 131<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 132<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> 133<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> 134<B>Nested Class Summary</B></FONT></TH> 135</TR> 136<TR BGCOLOR="white" CLASS="TableRowColor"> 137<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 138<CODE>static class</CODE></FONT></TD> 139<TD><CODE><B><A HREF="../../../../com/fasterxml/jackson/annotation/ObjectIdGenerator.IdKey.html" title="class in com.fasterxml.jackson.annotation">ObjectIdGenerator.IdKey</A></B></CODE> 140 141<BR> 142 Simple key class that can be used as a key for 143 ObjectId-to-POJO mappings, when multiple ObjectId types 144 and scopes are used.</TD> 145</TR> 146</TABLE> 147 148<!-- ======== CONSTRUCTOR SUMMARY ======== --> 149 150<A NAME="constructor_summary"><!-- --></A> 151<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 152<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> 153<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> 154<B>Constructor Summary</B></FONT></TH> 155</TR> 156<TR BGCOLOR="white" CLASS="TableRowColor"> 157<TD><CODE><B><A HREF="../../../../com/fasterxml/jackson/annotation/ObjectIdGenerator.html#ObjectIdGenerator()">ObjectIdGenerator</A></B>()</CODE> 158 159<BR> 160 </TD> 161</TR> 162</TABLE> 163 164<!-- ========== METHOD SUMMARY =========== --> 165 166<A NAME="method_summary"><!-- --></A> 167<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 168<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> 169<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> 170<B>Method Summary</B></FONT></TH> 171</TR> 172<TR BGCOLOR="white" CLASS="TableRowColor"> 173<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 174<CODE>abstract boolean</CODE></FONT></TD> 175<TD><CODE><B><A HREF="../../../../com/fasterxml/jackson/annotation/ObjectIdGenerator.html#canUseFor(com.fasterxml.jackson.annotation.ObjectIdGenerator)">canUseFor</A></B>(<A HREF="../../../../com/fasterxml/jackson/annotation/ObjectIdGenerator.html" title="class in com.fasterxml.jackson.annotation">ObjectIdGenerator</A><?> gen)</CODE> 176 177<BR> 178 Method called to check whether this generator instance can 179 be used for Object Ids of specific generator type and 180 scope; determination is based by passing a configured 181 "blueprint" (prototype) instance; from which the actual 182 instances are created (using <A HREF="../../../../com/fasterxml/jackson/annotation/ObjectIdGenerator.html#newForSerialization(java.lang.Object)"><CODE>newForSerialization(java.lang.Object)</CODE></A>).</TD> 183</TR> 184<TR BGCOLOR="white" CLASS="TableRowColor"> 185<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 186<CODE>abstract <A HREF="../../../../com/fasterxml/jackson/annotation/ObjectIdGenerator.html" title="class in com.fasterxml.jackson.annotation">ObjectIdGenerator</A><<A HREF="../../../../com/fasterxml/jackson/annotation/ObjectIdGenerator.html" title="type parameter in ObjectIdGenerator">T</A>></CODE></FONT></TD> 187<TD><CODE><B><A HREF="../../../../com/fasterxml/jackson/annotation/ObjectIdGenerator.html#forScope(java.lang.Class)">forScope</A></B>(<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A><?> scope)</CODE> 188 189<BR> 190 Factory method to create a blueprint instance for specified 191 scope.</TD> 192</TR> 193<TR BGCOLOR="white" CLASS="TableRowColor"> 194<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 195<CODE>abstract <A HREF="../../../../com/fasterxml/jackson/annotation/ObjectIdGenerator.html" title="type parameter in ObjectIdGenerator">T</A></CODE></FONT></TD> 196<TD><CODE><B><A HREF="../../../../com/fasterxml/jackson/annotation/ObjectIdGenerator.html#generateId(java.lang.Object)">generateId</A></B>(<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> forPojo)</CODE> 197 198<BR> 199 Method used for generating a new Object Identifier to serialize 200 for given POJO.</TD> 201</TR> 202<TR BGCOLOR="white" CLASS="TableRowColor"> 203<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 204<CODE>abstract <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A><?></CODE></FONT></TD> 205<TD><CODE><B><A HREF="../../../../com/fasterxml/jackson/annotation/ObjectIdGenerator.html#getScope()">getScope</A></B>()</CODE> 206 207<BR> 208 </TD> 209</TR> 210<TR BGCOLOR="white" CLASS="TableRowColor"> 211<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 212<CODE>abstract <A HREF="../../../../com/fasterxml/jackson/annotation/ObjectIdGenerator.IdKey.html" title="class in com.fasterxml.jackson.annotation">ObjectIdGenerator.IdKey</A></CODE></FONT></TD> 213<TD><CODE><B><A HREF="../../../../com/fasterxml/jackson/annotation/ObjectIdGenerator.html#key(java.lang.Object)">key</A></B>(<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> key)</CODE> 214 215<BR> 216 Method for constructing key to use for ObjectId-to-POJO maps.</TD> 217</TR> 218<TR BGCOLOR="white" CLASS="TableRowColor"> 219<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> 220<CODE>abstract <A HREF="../../../../com/fasterxml/jackson/annotation/ObjectIdGenerator.html" title="class in com.fasterxml.jackson.annotation">ObjectIdGenerator</A><<A HREF="../../../../com/fasterxml/jackson/annotation/ObjectIdGenerator.html" title="type parameter in ObjectIdGenerator">T</A>></CODE></FONT></TD> 221<TD><CODE><B><A HREF="../../../../com/fasterxml/jackson/annotation/ObjectIdGenerator.html#newForSerialization(java.lang.Object)">newForSerialization</A></B>(<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> context)</CODE> 222 223<BR> 224 Factory method called to create a new instance to use for 225 serialization: needed since generators may have state 226 (next id to produce).</TD> 227</TR> 228</TABLE> 229 <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A> 230<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 231<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"> 232<TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></B></TH> 233</TR> 234<TR BGCOLOR="white" CLASS="TableRowColor"> 235<TD><CODE><A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://download.oracle.com/javase/1.5.0/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://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</A>, <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD> 236</TR> 237</TABLE> 238 239<P> 240 241<!-- ========= CONSTRUCTOR DETAIL ======== --> 242 243<A NAME="constructor_detail"><!-- --></A> 244<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 245<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> 246<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"> 247<B>Constructor Detail</B></FONT></TH> 248</TR> 249</TABLE> 250 251<A NAME="ObjectIdGenerator()"><!-- --></A><H3> 252ObjectIdGenerator</H3> 253<PRE> 254public <B>ObjectIdGenerator</B>()</PRE> 255<DL> 256</DL> 257 258<!-- ============ METHOD DETAIL ========== --> 259 260<A NAME="method_detail"><!-- --></A> 261<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> 262<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> 263<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"> 264<B>Method Detail</B></FONT></TH> 265</TR> 266</TABLE> 267 268<A NAME="getScope()"><!-- --></A><H3> 269getScope</H3> 270<PRE> 271public abstract <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A><?> <B>getScope</B>()</PRE> 272<DL> 273<DD><DL> 274</DL> 275</DD> 276</DL> 277<HR> 278 279<A NAME="canUseFor(com.fasterxml.jackson.annotation.ObjectIdGenerator)"><!-- --></A><H3> 280canUseFor</H3> 281<PRE> 282public abstract boolean <B>canUseFor</B>(<A HREF="../../../../com/fasterxml/jackson/annotation/ObjectIdGenerator.html" title="class in com.fasterxml.jackson.annotation">ObjectIdGenerator</A><?> gen)</PRE> 283<DL> 284<DD>Method called to check whether this generator instance can 285 be used for Object Ids of specific generator type and 286 scope; determination is based by passing a configured 287 "blueprint" (prototype) instance; from which the actual 288 instances are created (using <A HREF="../../../../com/fasterxml/jackson/annotation/ObjectIdGenerator.html#newForSerialization(java.lang.Object)"><CODE>newForSerialization(java.lang.Object)</CODE></A>). 289<P> 290<DD><DL> 291 292<DT><B>Returns:</B><DD>True if this instance can be used as-is; false if not</DL> 293</DD> 294</DL> 295<HR> 296 297<A NAME="forScope(java.lang.Class)"><!-- --></A><H3> 298forScope</H3> 299<PRE> 300public abstract <A HREF="../../../../com/fasterxml/jackson/annotation/ObjectIdGenerator.html" title="class in com.fasterxml.jackson.annotation">ObjectIdGenerator</A><<A HREF="../../../../com/fasterxml/jackson/annotation/ObjectIdGenerator.html" title="type parameter in ObjectIdGenerator">T</A>> <B>forScope</B>(<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A><?> scope)</PRE> 301<DL> 302<DD>Factory method to create a blueprint instance for specified 303 scope. Generators that do not use scope may return 'this'. 304<P> 305<DD><DL> 306</DL> 307</DD> 308</DL> 309<HR> 310 311<A NAME="newForSerialization(java.lang.Object)"><!-- --></A><H3> 312newForSerialization</H3> 313<PRE> 314public abstract <A HREF="../../../../com/fasterxml/jackson/annotation/ObjectIdGenerator.html" title="class in com.fasterxml.jackson.annotation">ObjectIdGenerator</A><<A HREF="../../../../com/fasterxml/jackson/annotation/ObjectIdGenerator.html" title="type parameter in ObjectIdGenerator">T</A>> <B>newForSerialization</B>(<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> context)</PRE> 315<DL> 316<DD>Factory method called to create a new instance to use for 317 serialization: needed since generators may have state 318 (next id to produce). 319<p> 320 Note that actual type of 'context' is 321 <code>com.fasterxml.jackson.databind.SerializerProvider</code>, 322 but can not be declared here as type itself (as well as call 323 to this object) comes from databind package. 324<P> 325<DD><DL> 326<DT><B>Parameters:</B><DD><CODE>context</CODE> - Serialization context object used (of type 327 <code>com.fasterxml.jackson.databind.SerializerProvider</code>; 328 may be needed by more complex generators to access contextual 329 information such as configuration.</DL> 330</DD> 331</DL> 332<HR> 333 334<A NAME="key(java.lang.Object)"><!-- --></A><H3> 335key</H3> 336<PRE> 337public abstract <A HREF="../../../../com/fasterxml/jackson/annotation/ObjectIdGenerator.IdKey.html" title="class in com.fasterxml.jackson.annotation">ObjectIdGenerator.IdKey</A> <B>key</B>(<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> key)</PRE> 338<DL> 339<DD>Method for constructing key to use for ObjectId-to-POJO maps. 340<P> 341<DD><DL> 342</DL> 343</DD> 344</DL> 345<HR> 346 347<A NAME="generateId(java.lang.Object)"><!-- --></A><H3> 348generateId</H3> 349<PRE> 350public abstract <A HREF="../../../../com/fasterxml/jackson/annotation/ObjectIdGenerator.html" title="type parameter in ObjectIdGenerator">T</A> <B>generateId</B>(<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A> forPojo)</PRE> 351<DL> 352<DD>Method used for generating a new Object Identifier to serialize 353 for given POJO. 354<P> 355<DD><DL> 356<DT><B>Parameters:</B><DD><CODE>forPojo</CODE> - POJO for which identifier is needed 357<DT><B>Returns:</B><DD>Object Identifier to use.</DL> 358</DD> 359</DL> 360<!-- ========= END OF CLASS DATA ========= --> 361<HR> 362 363 364<!-- ======= START OF BOTTOM NAVBAR ====== --> 365<A NAME="navbar_bottom"><!-- --></A> 366<A HREF="#skip-navbar_bottom" title="Skip navigation links"></A> 367<TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""> 368<TR><td rowspan='3'><script type="text/javascript"><!-- 369google_ad_client = "pub-1467773697956887"; 370/* Jackson-ad-small */ 371google_ad_slot = "6699487946"; 372google_ad_width = 234; 373google_ad_height = 60; 374//--> 375</script> 376<script type="text/javascript" 377src="http://pagead2.googlesyndication.com/pagead/show_ads.js"> 378</script> 379<!-- GA --> 380<script type="text/javascript"> 381var gaJsHost = (("https:" == document.location.protocol) ? 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