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DeserializationProblemHandler (jackson-databind 2.0.0 API)
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com.fasterxml.jackson.databind.deser</FONT>
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Class DeserializationProblemHandler</H2>
<PRE>
<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>
  <IMG SRC="../../../../../resources/inherit.gif" ALT="extended by "><B>com.fasterxml.jackson.databind.deser.DeserializationProblemHandler</B>
</PRE>
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<DL>
<DT><PRE>public abstract class <B>DeserializationProblemHandler</B><DT>extends <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></DL>
</PRE>

<P>
This is the class that can be registered (via
 <A HREF="../../../../../com/fasterxml/jackson/databind/DeserializationConfig.html" title="class in com.fasterxml.jackson.databind"><CODE>DeserializationConfig</CODE></A> object owner by
 <A HREF="../../../../../com/fasterxml/jackson/databind/ObjectMapper.html" title="class in com.fasterxml.jackson.databind"><CODE>ObjectMapper</CODE></A>) to get calledn when a potentially
 recoverable problem is encountered during deserialization
 process. Handlers can try to resolve the problem, throw
 an exception or do nothing.
<p>
 Default implementations for all methods implemented minimal
 "do nothing" functionality, which is roughly equivalent to
 not having a registered listener at all. This allows for
 only implemented handler methods one is interested in, without
 handling other cases.
<P>

<P>
<DL>
<DT><B>Author:</B></DT>
  <DD>tatu</DD>
</DL>
<HR>

<P>

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<TD><CODE><B><A HREF="../../../../../com/fasterxml/jackson/databind/deser/DeserializationProblemHandler.html#DeserializationProblemHandler()">DeserializationProblemHandler</A></B>()</CODE>

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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../com/fasterxml/jackson/databind/deser/DeserializationProblemHandler.html#handleUnknownProperty(com.fasterxml.jackson.databind.DeserializationContext, com.fasterxml.jackson.core.JsonParser, com.fasterxml.jackson.databind.JsonDeserializer, java.lang.Object, java.lang.String)">handleUnknownProperty</A></B>(<A HREF="../../../../../com/fasterxml/jackson/databind/DeserializationContext.html" title="class in com.fasterxml.jackson.databind">DeserializationContext</A>&nbsp;ctxt,
                      com.fasterxml.jackson.core.JsonParser&nbsp;jp,
                      <A HREF="../../../../../com/fasterxml/jackson/databind/JsonDeserializer.html" title="class in com.fasterxml.jackson.databind">JsonDeserializer</A>&lt;?&gt;&nbsp;deserializer,
                      <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>&nbsp;beanOrClass,
                      <A HREF="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;propertyName)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Method called when a Json Map ("Object") entry with an unrecognized
 name is encountered.</TD>
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<A NAME="DeserializationProblemHandler()"><!-- --></A><H3>
DeserializationProblemHandler</H3>
<PRE>
public <B>DeserializationProblemHandler</B>()</PRE>
<DL>
</DL>

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<A NAME="handleUnknownProperty(com.fasterxml.jackson.databind.DeserializationContext, com.fasterxml.jackson.core.JsonParser, com.fasterxml.jackson.databind.JsonDeserializer, java.lang.Object, java.lang.String)"><!-- --></A><H3>
handleUnknownProperty</H3>
<PRE>
public boolean <B>handleUnknownProperty</B>(<A HREF="../../../../../com/fasterxml/jackson/databind/DeserializationContext.html" title="class in com.fasterxml.jackson.databind">DeserializationContext</A>&nbsp;ctxt,
                                     com.fasterxml.jackson.core.JsonParser&nbsp;jp,
                                     <A HREF="../../../../../com/fasterxml/jackson/databind/JsonDeserializer.html" title="class in com.fasterxml.jackson.databind">JsonDeserializer</A>&lt;?&gt;&nbsp;deserializer,
                                     <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>&nbsp;beanOrClass,
                                     <A HREF="http://docs.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;propertyName)
                              throws <A HREF="http://docs.oracle.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A>,
                                     com.fasterxml.jackson.core.JsonProcessingException</PRE>
<DL>
<DD>Method called when a Json Map ("Object") entry with an unrecognized
 name is encountered.
 Content (supposedly) matching the property are accessible via
 parser that can be obtained from passed deserialization context.
 Handler can also choose to skip the content; if so, it MUST return
 true to indicate it did handle property succesfully.
 Skipping is usually done like so:
<pre>
  ctxt.getParser().skipChildren();
</pre>
<p>
 Note: version 1.2 added new deserialization feature
 (<code>DeserializationConfig.DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES</code>).
 It will only have effect <b>after</b> handler is called, and only
 if handler did <b>not</b> handle the problem.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>beanOrClass</CODE> - Either bean instance being deserialized (if one
   has been instantiated so far); or Class that indicates type that
   will be instantiated (if no instantiation done yet: for example
   when bean uses non-default constructors)<DD><CODE>jp</CODE> - Parser to use for handling problematic content
<DT><B>Returns:</B><DD>True if the problem was succesfully resolved (and content available
    used or skipped); false if listen
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://docs.oracle.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE>
<DD><CODE>com.fasterxml.jackson.core.JsonProcessingException</CODE></DL>
</DD>
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