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BP Server Developer's Guide
Dataslot management : Working with different types of dataslots : OBJECT dataslots

OBJECT dataslots

An OBJECT type dataslot is defined as a dataslot containing a serializable Java Object. OBJECT dataslot types include Vector and Array, which are passed as input or output dataslots to an Adapter. OBJECT dataslots are provided so that any Java object of any class can be associated with a process instance. The class for the Java object can be from JDK, for example, java.util.ArrayList, or it can be any custom coded java class.
If an application contains OBJECT dataslot, then before creating instances of that application, copy the class(es) for the object dataslot in the following locations.
* Dynamic class loading for object dataslot