java - Jackson Custom Deserialization for Mapping Class Name String to Actual Class Definition -

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i using jackson custom deserializers parse json file. in file there bunch of entries key "class" , value name of class (without full package name). deserializer knows bunch of predefined (hard) paths search class. custom deserializer should keyword "class" (while parsing json) , based on value (the class name string), search in predefined paths , instantiate object matching class name.

i have implemented jackson deserializers interface , have overridden bunch of callbacks: findbeandeserializer, findbeandeserializer, findenumdeserializer... not let me catch event when parser sees class:classname key-value pair , act differently based on that.

any or pointers appreciated.

an example json

{     "class": "x",     "fieldname1": {         "class": "y",     }     ... }

i hope haven't spend time writing custom stuff. can use, out of box, annotation @jsontypeinfo (see javadoc): makes jackson automatically read/write additional type information. , 1 possible inclusion mechanism as.property, in case class name (or type name) added virtual property use. name of property can customized well.


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