Examples with TypeManager org.datanucleus.store.types.TypeManager used on opensource projects

Example 26 with TypeManager

use of org.datanucleus.store.types.TypeManager in project datanucleus-rdbms by datanucleus.

the class EmbeddedPCMapping method getStateManagerForEmbeddedObject.

/**
 * Accessor for StateManager of the embedded PC object when provided with the owner object.
 * @param ownerSM StateManager of the owner
 * @return StateManager of the embedded object
 */
private DNStateManager getStateManagerForEmbeddedObject(DNStateManager ownerSM) {
    AbstractMemberMetaData theMmd = getRealMemberMetaData();
    // Owner (non-embedded) PC
    Object value = ownerSM.provideField(theMmd.getAbsoluteFieldNumber());
    TypeManager typeManager = ownerSM.getExecutionContext().getTypeManager();
    value = mmd.isSingleCollection() ? typeManager.getContainerAdapter(value).iterator().next() : value;
    if (value == null) {
        return null;
    }
    ExecutionContext ec = ownerSM.getExecutionContext();
    DNStateManager thisSM = ec.findStateManager(value);
    if (thisSM == null) {
        // Assign a StateManager to manage our embedded object
        thisSM = ec.getNucleusContext().getStateManagerFactory().newForEmbedded(ec, value, false, ownerSM, theMmd.getAbsoluteFieldNumber(), objectType);
    }
    return thisSM;
}