Examples of org.datanucleus.metadata.CollectionMetaData

org.datanucleus.metadata.CollectionMetaData
Representation of the MetaData of a collection.

    this.storeMgr = storeMgr;
    this.ownerMemberMetaData = ownerMmd;
    this.clr = clr;
    this.relationType = ownerMemberMetaData.getRelationType(clr);


    CollectionMetaData colmd = ownerMemberMetaData.getCollection();
    if (colmd == null) {
      throw new NucleusUserException(LOCALISER.msg("056001", ownerMemberMetaData.getFullFieldName()));
    }


    // Load the element class
    elementType = colmd.getElementType();
    Class element_class = clr.classForName(elementType);


    if (ClassUtils.isReferenceType(element_class)) {
      if (storeMgr.getNucleusContext().getMetaDataManager().isPersistentInterface(elementType)) {
        elementCmd = storeMgr.getNucleusContext().getMetaDataManager().getMetaDataForInterface(element_class,clr);

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                childValue = Arrays.asList((Object[]) childValue);
              }


              String expectedType = mmd.getTypeName();
              if (mmd.getCollection() != null) {
                CollectionMetaData cmd = mmd.getCollection();
                expectedType = cmd.getElementType();
              } else if (mmd.getArray() != null) {
                ArrayMetaData amd = mmd.getArray();
                expectedType = amd.getElementType();
              }

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   * @return
   */
  private Object datastoreValueToPojoCollection(ClassLoaderResolver clr, Object value,
                                                StateManager ownerSM, AbstractMemberMetaData ammd,
                                                ContainerMetaData cmd) {
    CollectionMetaData collMetaData = (CollectionMetaData) cmd;
    String memberTypeStr = collMetaData.getElementType();
    Class<?> memberType = classForName(clr, memberTypeStr);
    Function<Object, Object> conversionFunc = DATASTORE_TO_POJO_TYPE_FUNC.get(memberType);
    if (value instanceof ShortBlob) {
      if (!memberType.equals(Byte.TYPE) && !memberType.equals(Byte.class)) {
        throw new NucleusException(

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                pushStack(arrmd);
            }
            else if (localName.equals("collection"))
            {
                AbstractMemberMetaData fmd = (AbstractMemberMetaData)getStack();
                CollectionMetaData collmd = fmd.newCollectionMetaData();
                collmd.setElementType(getAttr(attrs,"element-type"));
                collmd.setEmbeddedElement(getAttr(attrs,"embedded-element"));
                collmd.setSerializedElement(getAttr(attrs,"serialized-element"));
                collmd.setDependentElement(getAttr(attrs,"dependent-element"));
                pushStack(collmd);
            }
            else if (localName.equals("column"))
            {
                MetaData md = getStack();

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                element.getClass().getName());
        }


        boolean modified = internalRemove(sm, elementToRemove, size);


        CollectionMetaData collmd = ownerMemberMetaData.getCollection();
        if (allowDependentField && collmd.isDependentElement() && !collmd.isEmbeddedElement())
        {
            // Delete the element if it is dependent
            sm.getObjectManager().deleteObjectInternal(elementToRemove);
        }

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        {
            // Ordered list doesn't allow indexed removal so just remove the element
            internalRemove(sm, element, size);
        }


        CollectionMetaData collmd = ownerMemberMetaData.getCollection();
        if (collmd.isDependentElement() && !collmd.isEmbeddedElement())
        {
            if (!contains(sm, element))
            {
                // Delete the element if it is dependent and doesn't have a duplicate entry in the list
                sm.getObjectManager().deleteObjectInternal(element);

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     * @param ownerSM State Manager for the container. 
     */
    public void clear(StateManager ownerSM)
    {
        Collection dependentElements = null;
        CollectionMetaData collmd = ownerMemberMetaData.getCollection();
        if (collmd.isDependentElement() && !collmd.isEmbeddedElement() && !collmd.isSerializedElement())
        {
            // Retain the dependent elements that need deleting after clearing
            dependentElements = new HashSet();
            Iterator iter = iterator(ownerSM);
            while (iter.hasNext())

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        validateElementForWriting(sm, element, null);
        Object o = get(sm, index);


        getSpecialization().set(element, index, sm, this);


        CollectionMetaData collmd = ownerMemberMetaData.getCollection();
        if (collmd.isDependentElement() && !collmd.isEmbeddedElement() && allowDependentField)
        {
            if (o != null && !contains(sm, o))
            {
                // Delete the element if it is dependent and doesnt have a duplicate entry in the list
                sm.getObjectManager().deleteObjectInternal(o);

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                      AbstractSetStoreSpecialization specialization)
    {
        super(storeMgr, clr, specialization);


        setOwner(fmd, clr);
        CollectionMetaData colmd = fmd.getCollection();
        if (colmd == null)
        {
            throw new NucleusUserException(LOCALISER.msg("056001", fmd.getFullFieldName()));
        }


        // Load the element class
        elementType = colmd.getElementType();
        Class element_class = clr.classForName(elementType);


        if (ClassUtils.isReferenceType(element_class))
        {
            elementIsPersistentInterface = storeMgr.getOMFContext().getMetaDataManager().isPersistentInterface(element_class.getName());

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            elementToRemove = om.findObject(om.getApiAdapter().getIdForObject(element), true, false,
                element.getClass().getName());
        }


        boolean modified = getSpecialization().remove(sm, elementToRemove, size, this);
        CollectionMetaData collmd = ownerMemberMetaData.getCollection();
        if (allowDependentField && collmd.isDependentElement() && !collmd.isEmbeddedElement())
        {
            // TODO Could this element be stored as a duplicate in this set ?
            // Delete the element if it is dependent
            sm.getObjectManager().deleteObjectInternal(elementToRemove);
        }

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