/**
   * INTERNAL: Get the appropriate attribute value from the object and put it in the appropriate
   * field of the database row. Loop through the reference objects and extract the primary keys and
   * put them in the vector of "nested" rows.
   */
  public void writeFromObjectIntoRow(Object object, AbstractRecord row, AbstractSession session) {
    if (!isForeignKeyRelationship) {
      return;
    }

    if (((getSourceForeignKeysToTargetKeys()) == null)
        || (getSourceForeignKeysToTargetKeys().size() == 0)) {
      return;
    }

    if (this.isReadOnly()) {
      return;
    }

    AbstractRecord referenceRow =
        this.getIndirectionPolicy().extractReferenceRow(this.getAttributeValueFromObject(object));
    if (referenceRow != null) {
      // the reference objects have not been instantiated - use the value from the original row
      if (getForeignKeyGroupingElement() != null) {
        row.put(
            this.getForeignKeyGroupingElement(),
            referenceRow.getValues(this.getForeignKeyGroupingElement()));
      } else if (getSourceForeignKeyFields().size() > 0) {
        DatabaseField foreignKeyField = (DatabaseField) getSourceForeignKeyFields().get(0);
        row.put(foreignKeyField, referenceRow.getValues(foreignKeyField));
      }
      return;
    }

    ContainerPolicy cp = this.getContainerPolicy();

    // extract the keys from the objects
    Object attributeValue = this.getRealCollectionAttributeValueFromObject(object, session);
    Vector nestedRows = new Vector(cp.sizeFor(attributeValue));

    if (getForeignKeyGroupingElement() != null) {
      for (Object iter = cp.iteratorFor(attributeValue); cp.hasNext(iter); ) {
        XMLRecord nestedRow =
            this.extractKeyRowFromReferenceObject(cp.next(iter, session), session, (XMLRecord) row);
        nestedRows.addElement(nestedRow);
      }
      row.add(this.getForeignKeyGroupingElement(), nestedRows);
    } else {
      DatabaseField singleField = (DatabaseField) getSourceForeignKeyFields().get(0);
      DatabaseField pkField = (DatabaseField) getSourceForeignKeysToTargetKeys().get(singleField);
      for (Object iter = cp.iteratorFor(attributeValue); cp.hasNext(iter); ) {
        Object singleValue =
            getReferenceDescriptor()
                .getObjectBuilder()
                .extractValueFromObjectForField(cp.next(iter, session), pkField, session);
        row.add(singleField, singleValue);
      }
    }
  }
  /** INTERNAL: Write the attribute value from the object to the row. */
  public void writeFromObjectIntoRow(Object object, AbstractRecord row, AbstractSession session) {
    // for each xmlField on this mapping
    for (Iterator fieldIt = getFields().iterator(); fieldIt.hasNext(); ) {
      XMLField xmlField = (XMLField) fieldIt.next();
      ContainerPolicy cp = getContainerPolicy();
      Object collection = getAttributeAccessor().getAttributeValueFromObject(object);
      if (collection == null) {
        return;
      }

      Object fieldValue;
      Object objectValue;
      String stringValue = "";
      QName schemaType;
      Object iterator = cp.iteratorFor(collection);
      if (usesSingleNode()) {
        while (cp.hasNext(iterator)) {
          objectValue = cp.next(iterator, session);
          fieldValue = buildFieldValue(objectValue, xmlField, session);
          if (fieldValue != null) {
            schemaType = getSchemaType(xmlField, fieldValue, session);
            String newValue = getValueToWrite(schemaType, fieldValue, session);
            if (newValue != null) {
              stringValue += newValue;
              if (cp.hasNext(iterator)) {
                stringValue += SPACE;
              }
            }
          }
        }
        if (!(stringValue.equals(""))) {
          row.put(xmlField, stringValue);
        }
      } else {
        ArrayList keyValues = new ArrayList();
        while (cp.hasNext(iterator)) {
          objectValue = cp.next(iterator, session);
          fieldValue = buildFieldValue(objectValue, xmlField, session);
          if (fieldValue != null) {
            schemaType = getSchemaType(xmlField, fieldValue, session);
            stringValue = getValueToWrite(schemaType, fieldValue, session);
            // row.add(xmlField, stringValue);
            keyValues.add(stringValue);
          }
        }
        row.put(xmlField, keyValues);
      }
    }
  }
  /** INTERNAL: Delete the reference objects. */
  public void preDelete(DeleteObjectQuery query) throws DatabaseException, OptimisticLockException {
    if (isForeignKeyRelationship()) {
      return;
    }

    if (!this.shouldObjectModifyCascadeToParts(query)) {
      return;
    }

    Object objects =
        this.getRealCollectionAttributeValueFromObject(query.getObject(), query.getSession());
    ContainerPolicy cp = this.getContainerPolicy();

    // if privately-owned parts have their privately-owned sub-parts, delete them one by one;
    // else delete everything in one shot
    if (this.mustDeleteReferenceObjectsOneByOne()) {
      for (Object iter = cp.iteratorFor(objects); cp.hasNext(iter); ) {
        DeleteObjectQuery deleteQuery = new DeleteObjectQuery();
        deleteQuery.setIsExecutionClone(true);
        deleteQuery.setObject(cp.next(iter, query.getSession()));
        deleteQuery.setCascadePolicy(query.getCascadePolicy());
        query.getSession().executeQuery(deleteQuery);
      }
      if (!query.getSession().isUnitOfWork()) {
        // This deletes any objects on the database, as the collection in memory may have been
        // changed.
        // This is not required for unit of work, as the update would have already deleted these
        // objects,
        // and the backup copy will include the same objects causing double deletes.
        this.deleteReferenceObjectsLeftOnDatabase(query);
      }
    } else {
      this.deleteAll(query);
    }
  }
  /** Compare the attributes. Return true if they are alike. Ignore the order of the elements. */
  private boolean compareAttributeValuesWithoutOrder(
      Object collection1, Object collection2, AbstractSession session) {
    ContainerPolicy cp = this.getContainerPolicy();

    Vector vector2 = cp.vectorFor(collection2, session); // "clone" it so we can clear out the slots

    for (Object iter1 = cp.iteratorFor(collection1); cp.hasNext(iter1); ) {
      Object element1 = cp.next(iter1, session);

      boolean found = false;
      for (int i = 0; i < vector2.size(); i++) {
        if (this.compareElements(element1, vector2.elementAt(i), session)) {
          found = true;
          vector2.setElementAt(XXX, i); // clear out the matching element
          break; // matching element found - skip the rest of them
        }
      }
      if (!found) {
        return false;
      }
    }

    // look for elements that were not in collection1
    for (Enumeration stream = vector2.elements(); stream.hasMoreElements(); ) {
      if (stream.nextElement() != XXX) {
        return false;
      }
    }
    return true;
  }
  /**
   * This method will make sure that all the records privately owned by this mapping are actually
   * removed. If such records are found then those are all read and removed one by one along with
   * their privately owned parts.
   */
  protected void deleteReferenceObjectsLeftOnDatabase(DeleteObjectQuery query)
      throws DatabaseException, OptimisticLockException {
    Object objects = this.readPrivateOwnedForObject(query);

    // delete all these objects one by one
    ContainerPolicy cp = this.getContainerPolicy();
    for (Object iter = cp.iteratorFor(objects); cp.hasNext(iter); ) {
      query.getSession().deleteObject(cp.next(iter, query.getSession()));
    }
  }
  /**
   * Merge changes from the source to the target object. Make the necessary removals and adds and
   * map key modifications.
   */
  private void mergeChangesIntoObjectWithoutOrder(
      Object target, ChangeRecord changeRecord, Object source, MergeManager mergeManager) {
    EISCollectionChangeRecord sdkChangeRecord = (EISCollectionChangeRecord) changeRecord;
    ContainerPolicy cp = this.getContainerPolicy();
    AbstractSession session = mergeManager.getSession();

    Object targetCollection = null;
    if (sdkChangeRecord.getOwner().isNew()) {
      targetCollection = cp.containerInstance(sdkChangeRecord.getAdds().size());
    } else {
      targetCollection = this.getRealCollectionAttributeValueFromObject(target, session);
    }

    Vector removes = sdkChangeRecord.getRemoves();
    Vector adds = sdkChangeRecord.getAdds();
    Vector changedMapKeys = sdkChangeRecord.getChangedMapKeys();

    synchronized (targetCollection) {
      for (Enumeration stream = removes.elements(); stream.hasMoreElements(); ) {
        Object removeElement =
            this.buildRemovedElementFromChangeSet(stream.nextElement(), mergeManager);

        Object targetElement = null;
        for (Object iter = cp.iteratorFor(targetCollection); cp.hasNext(iter); ) {
          targetElement = cp.next(iter, session);
          if (this.compareElements(targetElement, removeElement, session)) {
            break; // matching element found - skip the rest of them
          }
        }
        if (targetElement != null) {
          // a matching element was found, remove it
          cp.removeFrom(targetElement, targetCollection, session);
        }
      }

      for (Enumeration stream = adds.elements(); stream.hasMoreElements(); ) {
        Object addElement = this.buildAddedElementFromChangeSet(stream.nextElement(), mergeManager);
        cp.addInto(addElement, targetCollection, session);
      }

      for (Enumeration stream = changedMapKeys.elements(); stream.hasMoreElements(); ) {
        Object changedMapKeyElement =
            this.buildAddedElementFromChangeSet(stream.nextElement(), mergeManager);
        Object originalElement =
            ((UnitOfWorkImpl) session).getOriginalVersionOfObject(changedMapKeyElement);
        cp.removeFrom(originalElement, targetCollection, session);
        cp.addInto(changedMapKeyElement, targetCollection, session);
      }
    }

    // reset the attribute to allow for set method to re-morph changes if the collection is not
    // being stored directly
    this.setRealAttributeValueInObject(target, targetCollection);
  }
  /** INTERNAL: Insert privately owned parts */
  public void preInsert(WriteObjectQuery query) throws DatabaseException, OptimisticLockException {
    if (!this.isForeignKeyRelationship()) {
      return;
    }

    if (!this.shouldObjectModifyCascadeToParts(query)) {
      return;
    }

    // only cascade dependents in UOW
    if (query.shouldCascadeOnlyDependentParts()) {
      return;
    }

    Object objects =
        this.getRealCollectionAttributeValueFromObject(query.getObject(), query.getSession());

    // insert each object one by one
    ContainerPolicy cp = this.getContainerPolicy();
    for (Object iter = cp.iteratorFor(objects); cp.hasNext(iter); ) {
      Object object = cp.next(iter, query.getSession());
      if (this.isPrivateOwned()) {
        // no need to set changeset here as insert is just a copy of the object anyway
        InsertObjectQuery insertQuery = new InsertObjectQuery();
        insertQuery.setIsExecutionClone(true);
        insertQuery.setObject(object);
        insertQuery.setCascadePolicy(query.getCascadePolicy());
        query.getSession().executeQuery(insertQuery);
      } else {
        // This will happen in a unit of work or cascaded query.
        // This is done only for persistence by reachability and is not required if the targets are
        // in the queue anyway
        // Avoid cycles by checking commit manager, this is allowed because there is no dependency.
        if (!query.getSession().getCommitManager().isCommitInPreModify(object)) {
          WriteObjectQuery writeQuery = new WriteObjectQuery();
          writeQuery.setIsExecutionClone(true);
          if (query.getSession().isUnitOfWork()) {
            UnitOfWorkChangeSet uowChangeSet =
                (UnitOfWorkChangeSet)
                    ((UnitOfWorkImpl) query.getSession()).getUnitOfWorkChangeSet();
            if (uowChangeSet != null) {
              writeQuery.setObjectChangeSet(
                  (ObjectChangeSet) uowChangeSet.getObjectChangeSetForClone(object));
            }
          }
          writeQuery.setObject(object);
          writeQuery.setCascadePolicy(query.getCascadePolicy());
          query.getSession().executeQuery(writeQuery);
        }
      }
    }
  }
  /** INTERNAL: Used to verify whether the specified object is deleted or not. */
  public boolean verifyDelete(Object object, AbstractSession session) throws DatabaseException {
    if (this.isPrivateOwned()) {
      Object objects = this.getRealCollectionAttributeValueFromObject(object, session);

      ContainerPolicy containerPolicy = getContainerPolicy();
      for (Object iter = containerPolicy.iteratorFor(objects); containerPolicy.hasNext(iter); ) {
        if (!session.verifyDelete(containerPolicy.next(iter, session))) {
          return false;
        }
      }
    }
    return true;
  }
  /**
   * Compare the attributes. Return true if they are alike. The order of the elements is
   * significant.
   */
  private boolean compareAttributeValuesWithOrder(
      Object collection1, Object collection2, AbstractSession session) {
    ContainerPolicy cp = this.getContainerPolicy();

    Object iter1 = cp.iteratorFor(collection1);
    Object iter2 = cp.iteratorFor(collection2);

    while (cp.hasNext(iter1)) {
      if (!this.compareElements(cp.next(iter1, session), cp.next(iter2, session), session)) {
        return false;
      }
    }
    return true;
  }
  /** INTERNAL: */
  @Override
  public void writeFromObjectIntoRow(
      Object object, AbstractRecord row, AbstractSession session, WriteType writeType)
      throws DescriptorException {
    if (this.isReadOnly()) {
      return;
    }

    Object attributeValue = this.getAttributeValueFromObject(object);
    if (attributeValue == null) {
      row.put(this.getField(), null);
      return;
    }

    ContainerPolicy cp = this.getContainerPolicy();

    Vector nestedRows = new Vector(cp.sizeFor(attributeValue));
    Object iter = cp.iteratorFor(attributeValue);
    if (null != iter) {
      while (cp.hasNext(iter)) {
        Object element = cp.next(iter, session);
        // convert the value - if necessary
        element =
            convertObjectValueToDataValue(element, session, ((XMLRecord) row).getMarshaller());
        if (element == null) {
          XMLNullRepresentationType nullRepresentation =
              getNullPolicy().getMarshalNullRepresentation();
          if (nullRepresentation == XMLNullRepresentationType.XSI_NIL) {
            nestedRows.add(XMLRecord.NIL);
          } else if (nullRepresentation == XMLNullRepresentationType.EMPTY_NODE) {
            Node emptyNode =
                XPathEngine.getInstance()
                    .createUnownedElement(((XMLRecord) row).getDOM(), (XMLField) field);
            DOMRecord nestedRow = new DOMRecord(emptyNode);
            nestedRows.add(nestedRow);
          }
        } else {
          nestedRows.addElement(buildCompositeRow(element, session, row, writeType));
        }
      }
    }

    Object fieldValue = null;
    if (!nestedRows.isEmpty()) {
      fieldValue =
          this.getDescriptor()
              .buildFieldValueFromNestedRows(nestedRows, getStructureName(), session);
    }
    row.put(this.getField(), fieldValue);
  }
  /**
   * Build and return the change record that results from comparing the two collection attributes.
   * Ignore the order of the elements.
   */
  private ChangeRecord compareAttributeValuesForChangeWithoutOrder(
      Object cloneCollection,
      Object backupCollection,
      ObjectChangeSet owner,
      AbstractSession session) {
    ContainerPolicy cp = this.getContainerPolicy();

    Vector backupVector =
        cp.vectorFor(backupCollection, session); // "clone" it so we can clear out the slots

    EISCollectionChangeRecord changeRecord =
        new EISCollectionChangeRecord(owner, this.getAttributeName(), this.getDatabaseMapping());
    for (Object cloneIter = cp.iteratorFor(cloneCollection); cp.hasNext(cloneIter); ) {
      Object cloneElement = cp.next(cloneIter, session);

      boolean found = false;
      for (int i = 0; i < backupVector.size(); i++) {
        if (this.compareElementsForChange(cloneElement, backupVector.elementAt(i), session)) {
          // the clone element was found in the backup collection
          found = true;
          backupVector.setElementAt(XXX, i); // clear out the matching backup element
          if (this.mapKeyHasChanged(cloneElement, session)) {
            changeRecord.addChangedMapKeyChangeSet(
                this.buildChangeSet(cloneElement, owner, session));
          }
          break; // matching backup element found - skip the rest of them
        }
      }
      if (!found) {
        // the clone element was not found, so it must have been added
        changeRecord.addAddedChangeSet(this.buildChangeSet(cloneElement, owner, session));
      }
    }

    for (int i = 0; i < backupVector.size(); i++) {
      Object backupElement = backupVector.elementAt(i);
      if (backupElement != XXX) {
        // the backup element was not in the clone collection, so it must have been removed
        changeRecord.addRemovedChangeSet(this.buildChangeSet(backupElement, owner, session));
      }
    }

    if (changeRecord.hasChanges()) {
      return changeRecord;
    } else {
      return null;
    }
  }
Пример #12
0
  /**
   * For isMany=false properties set the value to null. For isMany=true set the value to an empty
   * container of the appropriate type.
   */
  public void unsetDeclaredProperty(int propertyIndex) {
    SDOProperty declaredProperty =
        (SDOProperty) dataObject.getType().getDeclaredProperties().get(propertyIndex);
    Mapping mapping = this.getJAXBMappingForProperty(declaredProperty);
    if (declaredProperty.isMany()) {
      ContainerMapping containerMapping = (ContainerMapping) mapping;
      ContainerPolicy containerPolicy = containerMapping.getContainerPolicy();

      // OLD VALUE
      if (mapping.isAbstractCompositeCollectionMapping()) {
        XMLCompositeCollectionMapping compositeMapping = (XMLCompositeCollectionMapping) mapping;
        if (compositeMapping.getContainerAccessor() != null) {

          Object oldContainer = mapping.getAttributeValueFromObject(entity);
          if (oldContainer != null) {
            AbstractSession session =
                ((JAXBContext) jaxbHelperContext.getJAXBContext())
                    .getXMLContext()
                    .getSession(entity);
            Object iterator = containerPolicy.iteratorFor(oldContainer);
            while (containerPolicy.hasNext(iterator)) {
              Object oldValue = containerPolicy.next(iterator, session);
              compositeMapping.getContainerAccessor().setAttributeValueInObject(oldValue, null);
            }
          }
        }
      }

      // NEW VALUE
      Object container = containerPolicy.containerInstance();
      mapping.getAttributeAccessor().setAttributeValueInObject(entity, container);
    } else {
      // OLD VALUE
      Object oldValue = mapping.getAttributeAccessor().getAttributeValueFromObject(entity);
      if (mapping.isAbstractCompositeObjectMapping()) {
        XMLCompositeObjectMapping compositeMapping = (XMLCompositeObjectMapping) mapping;
        if (compositeMapping.getContainerAccessor() != null) {
          if (oldValue != null) {
            compositeMapping.getContainerAccessor().setAttributeValueInObject(oldValue, null);
          }
        }
      }

      // NEW VALUE
      mapping.getAttributeAccessor().setAttributeValueInObject(entity, null);
    }
  }
  public boolean marshal(
      XPathFragment xPathFragment,
      MarshalRecord marshalRecord,
      Object object,
      AbstractSession session,
      NamespaceResolver namespaceResolver) {
    if (xmlBinaryDataCollectionMapping.isReadOnly()) {
      return false;
    }
    Object collection =
        xmlBinaryDataCollectionMapping.getAttributeAccessor().getAttributeValueFromObject(object);
    if (null == collection) {
      return false;
    }
    String xopPrefix = null;
    // If the field's resolver is non-null and has an entry for XOP,
    // use it - otherwise, create a new resolver, set the XOP entry,
    // on it, and use it instead.
    // We do this to avoid setting the XOP namespace declaration on
    // a given field or descriptor's resolver, as it is only required
    // on the current element
    if (namespaceResolver != null) {
      xopPrefix = namespaceResolver.resolveNamespaceURI(XMLConstants.XOP_URL);
    }
    if (xopPrefix == null || namespaceResolver == null) {
      xopPrefix = XMLConstants.XOP_PREFIX;
      marshalRecord.getNamespaceResolver().put(xopPrefix, XMLConstants.XOP_URL);
    }

    ContainerPolicy cp = getContainerPolicy();
    Object iterator = cp.iteratorFor(collection);
    while (cp.hasNext(iterator)) {
      Object objectValue = cp.next(iterator, session);
      marshalSingleValue(
          xPathFragment,
          marshalRecord,
          object,
          objectValue,
          session,
          namespaceResolver,
          ObjectMarshalContext.getInstance());
    }

    marshalRecord.getNamespaceResolver().removeNamespace(XMLConstants.XOP_PREFIX);
    return true;
  }
  /**
   * INTERNAL: Merge changes from the source to the target object. Simply replace the entire target
   * collection.
   */
  public void mergeIntoObject(
      Object target, boolean isTargetUnInitialized, Object source, MergeManager mergeManager) {
    ContainerPolicy cp = this.getContainerPolicy();
    AbstractSession session = mergeManager.getSession();

    Object sourceCollection = this.getRealCollectionAttributeValueFromObject(source, session);
    Object targetCollection = cp.containerInstance(cp.sizeFor(sourceCollection));

    for (Object iter = cp.iteratorFor(sourceCollection); cp.hasNext(iter); ) {
      Object targetElement = this.buildElementFromElement(cp.next(iter, session), mergeManager);
      cp.addInto(targetElement, targetCollection, session);
    }

    // reset the attribute to allow for set method to re-morph changes if the collection is not
    // being stored directly
    this.setRealAttributeValueInObject(target, targetCollection);
  }
Пример #15
0
 /**
  * INTERNAL: Execute the query. If there are cached results return those. This must override the
  * super to support result caching.
  *
  * @param session - the session in which the receiver will be executed.
  * @return An object or vector, the result of executing the query.
  * @exception DatabaseException - an error has occurred on the database
  */
 public Object execute(AbstractSession session, AbstractRecord row) throws DatabaseException {
   if (shouldCacheQueryResults()) {
     if (getContainerPolicy().overridesRead()) {
       throw QueryException.cannotCacheCursorResultsOnQuery(this);
     }
     if (shouldConformResultsInUnitOfWork()) {
       throw QueryException.cannotConformAndCacheQueryResults(this);
     }
     if (isPrepared()) { // only prepared queries can have cached results.
       Object queryResults = getQueryResults(session, row, true);
       if (queryResults != null) {
         if (QueryMonitor.shouldMonitor()) {
           QueryMonitor.incrementReadAllHits(this);
         }
         // bug6138532 - check for "cached no results" (InvalidObject singleton) in query
         // results, and return an empty container instance as configured
         if (queryResults == InvalidObject.instance) {
           return getContainerPolicy().containerInstance(0);
         }
         Collection results = (Collection) queryResults;
         if (session.isUnitOfWork()) {
           ContainerPolicy policy = getContainerPolicy();
           Object resultCollection = policy.containerInstance(results.size());
           Object iterator = policy.iteratorFor(results);
           while (policy.hasNext(iterator)) {
             Object result =
                 ((UnitOfWorkImpl) session)
                     .registerExistingObject(policy.next(iterator, session), this.descriptor);
             policy.addInto(result, resultCollection, session);
           }
           return resultCollection;
         }
         return results;
       }
     }
   }
   if (QueryMonitor.shouldMonitor()) {
     QueryMonitor.incrementReadAllMisses(this);
   }
   return super.execute(session, row);
 }
  /** INTERNAL: Delete the reference objects. */
  @Override
  public void postDelete(DeleteObjectQuery query)
      throws DatabaseException, OptimisticLockException {
    if (!isForeignKeyRelationship()) {
      return;
    }

    if (!this.shouldObjectModifyCascadeToParts(query)) {
      return;
    }
    Object referenceObjects =
        this.getRealCollectionAttributeValueFromObject(query.getObject(), query.getSession());

    // if we have a custom delete all query, use it;
    // otherwise, delete the reference objects one by one
    if (this.hasCustomDeleteAllQuery()) {
      this.deleteAll(query, referenceObjects);
    } else {
      ContainerPolicy cp = this.getContainerPolicy();
      for (Object iter = cp.iteratorFor(referenceObjects); cp.hasNext(iter); ) {
        DeleteObjectQuery deleteQuery = new DeleteObjectQuery();
        deleteQuery.setIsExecutionClone(true);
        deleteQuery.setObject(cp.next(iter, query.getSession()));
        deleteQuery.setCascadePolicy(query.getCascadePolicy());
        query.getSession().executeQuery(deleteQuery);
      }
      if (!query.getSession().isUnitOfWork()) {
        // This deletes any objects on the database, as the collection in memory may have been
        // changed.
        // This is not required for unit of work, as the update would have already deleted these
        // objects,
        // and the backup copy will include the same objects, causing double deletes.
        this.deleteReferenceObjectsLeftOnDatabase(query);
      }
    }
  }
  public void writeFromObjectIntoRow(Object object, AbstractRecord row, AbstractSession session) {
    XMLRecord record = (XMLRecord) row;
    XMLMarshaller marshaller = record.getMarshaller();
    Object attributeValue = getAttributeValueFromObject(object);

    ContainerPolicy cp = this.getContainerPolicy();
    Vector elements = new Vector(cp.sizeFor(attributeValue));
    XMLField field = (XMLField) getField();
    NamespaceResolver resolver = field.getNamespaceResolver();
    boolean isAttribute = field.getLastXPathFragment().isAttribute();
    String prefix = null;
    XMLField includeField = null;
    if (!isAttribute) {
      if (record.isXOPPackage() && !isSwaRef() && !shouldInlineBinaryData()) {
        field = (XMLField) getField();

        // If the field's resolver is non-null and has an entry for XOP,
        // use it - otherwise, create a new resolver, set the XOP entry,
        // on it, and use it instead.
        // We do this to avoid setting the XOP namespace declaration on
        // a given field or descriptor's resolver, as it is only required
        // on the current element
        if (resolver != null) {
          prefix = resolver.resolveNamespaceURI(XMLConstants.XOP_URL);
        }
        if (prefix == null) {
          prefix = XMLConstants.XOP_PREFIX; // "xop";
          resolver = new NamespaceResolver();
          resolver.put(prefix, XMLConstants.XOP_URL);
        }
        includeField = new XMLField(prefix + XMLConstants.COLON + INCLUDE + "/@href");
        includeField.setNamespaceResolver(resolver);
      }
    }
    XMLField textField = new XMLField(field.getXPath() + '/' + XMLConstants.TEXT);
    textField.setNamespaceResolver(field.getNamespaceResolver());
    textField.setSchemaType(field.getSchemaType());
    // field = textField;

    boolean inline = false;
    for (Object iter = cp.iteratorFor(attributeValue); cp.hasNext(iter); ) {
      Object element = cp.next(iter, session);
      element = getValueToWrite(element, object, record, field, includeField, session);
      if (element.getClass() == ClassConstants.ABYTE) {
        inline = true;
      }
      if (element != null) {
        elements.addElement(element);
      }
    }
    Object fieldValue = null;
    if (!elements.isEmpty()) {
      fieldValue =
          this.getDescriptor()
              .buildFieldValueFromDirectValues(elements, elementDataTypeName, session);
    }
    if (inline) {
      row.put(textField, fieldValue);
    } else {
      row.put(field, fieldValue);
    }
  }
Пример #18
0
  /** INTERNAL: Conform the result if specified. */
  protected Object conformResult(
      Object result,
      UnitOfWorkImpl unitOfWork,
      AbstractRecord arguments,
      boolean buildDirectlyFromRows) {
    if (getSelectionCriteria() != null) {
      ExpressionBuilder builder = getSelectionCriteria().getBuilder();
      builder.setSession(unitOfWork.getRootSession(null));
      builder.setQueryClass(getReferenceClass());
    }

    // If the query is redirected then the collection returned might no longer
    // correspond to the original container policy.  CR#2342-S.M.
    ContainerPolicy cp;
    if (getRedirector() != null) {
      cp = ContainerPolicy.buildPolicyFor(result.getClass());
    } else {
      cp = getContainerPolicy();
    }

    // This code is now a great deal different...  For one, registration is done
    // as part of conforming.  Also, this should only be called if one actually
    // is conforming.
    // First scan the UnitOfWork for conforming instances.
    // This will walk through the entire cache of registered objects.
    // Let p be objects from result not in the cache.
    // Let c be objects from cache.
    // Presently p intersect c = empty set, but later p subset c.
    // By checking cache now doesConform will be called p fewer times.
    Map indexedInterimResult =
        unitOfWork.scanForConformingInstances(
            getSelectionCriteria(), getReferenceClass(), arguments, this);

    Cursor cursor = null;
    // In the case of cursors just conform/register the initially read collection.
    if (cp.isCursorPolicy()) {
      cursor = (Cursor) result;
      cp = ContainerPolicy.buildPolicyFor(ClassConstants.Vector_class);
      // In nested UnitOfWork session might have been session of the parent.
      cursor.setSession(unitOfWork);
      result = cursor.getObjectCollection();
      // for later incremental conforming...
      cursor.setInitiallyConformingIndex(indexedInterimResult);
      cursor.setSelectionCriteriaClone(getSelectionCriteria());
      cursor.setTranslationRow(arguments);
    }

    // Now conform the result from the database.
    // Remove any deleted or changed objects that no longer conform.
    // Deletes will only work for simple queries, queries with or's or anyof's may not return
    // correct results when untriggered indirection is in the model.
    Vector fromDatabase = null;

    // When building directly from rows, one of the performance benefits
    // is that we no longer have to wrap and then unwrap the originals.
    // result is just a vector, not a container of wrapped originals.
    if (buildDirectlyFromRows) {
      Vector rows = (Vector) result;
      fromDatabase = new Vector(rows.size());
      for (int i = 0; i < rows.size(); i++) {
        Object object = rows.elementAt(i);
        // null is placed in the row collection for 1-m joining to filter duplicate rows.
        if (object != null) {
          Object clone =
              conformIndividualResult(
                  object,
                  unitOfWork,
                  arguments,
                  getSelectionCriteria(),
                  indexedInterimResult,
                  buildDirectlyFromRows);
          if (clone != null) {
            fromDatabase.addElement(clone);
          }
        }
      }
    } else {
      fromDatabase = new Vector(cp.sizeFor(result));
      AbstractSession sessionToUse = unitOfWork.getParent();
      for (Object iter = cp.iteratorFor(result); cp.hasNext(iter); ) {
        Object object = cp.next(iter, sessionToUse);
        Object clone =
            conformIndividualResult(
                object,
                unitOfWork,
                arguments,
                getSelectionCriteria(),
                indexedInterimResult,
                buildDirectlyFromRows);
        if (clone != null) {
          fromDatabase.addElement(clone);
        }
      }
    }

    // Now add the unwrapped conforming instances into an appropriate container.
    // Wrapping is done automatically.
    // Make sure a vector of exactly the right size is returned.
    Object conformedResult =
        cp.containerInstance(indexedInterimResult.size() + fromDatabase.size());
    Object eachClone;
    for (Iterator enumtr = indexedInterimResult.values().iterator(); enumtr.hasNext(); ) {
      eachClone = enumtr.next();
      cp.addInto(eachClone, conformedResult, unitOfWork);
    }
    for (Enumeration enumtr = fromDatabase.elements(); enumtr.hasMoreElements(); ) {
      eachClone = enumtr.nextElement();
      cp.addInto(eachClone, conformedResult, unitOfWork);
    }

    if (cursor != null) {
      cursor.setObjectCollection((Vector) conformedResult);

      // For nested UOW must copy all in object collection to
      // initiallyConformingIndex, as some of these could have been from
      // the parent UnitOfWork.
      if (unitOfWork.isNestedUnitOfWork()) {
        for (Enumeration enumtr = cursor.getObjectCollection().elements();
            enumtr.hasMoreElements(); ) {
          Object clone = enumtr.nextElement();
          indexedInterimResult.put(clone, clone);
        }
      }
      return cursor;
    } else {
      return conformedResult;
    }
  }
Пример #19
0
  /**
   * INTERNAL: All objects queried via a UnitOfWork get registered here. If the query went to the
   * database.
   *
   * <p>Involves registering the query result individually and in totality, and hence refreshing /
   * conforming is done here.
   *
   * @param result may be collection (read all) or an object (read one), or even a cursor. If in
   *     transaction the shared cache will be bypassed, meaning the result may not be originals from
   *     the parent but raw database rows.
   * @param unitOfWork the unitOfWork the result is being registered in.
   * @param arguments the original arguments/parameters passed to the query execution. Used by
   *     conforming
   * @param buildDirectlyFromRows If in transaction must construct a registered result from raw
   *     database rows.
   * @return the final (conformed, refreshed, wrapped) UnitOfWork query result
   */
  public Object registerResultInUnitOfWork(
      Object result,
      UnitOfWorkImpl unitOfWork,
      AbstractRecord arguments,
      boolean buildDirectlyFromRows) {
    // For bug 2612366: Conforming results in UOW extremely slow.
    // Replacing results with registered versions in the UOW is a part of
    // conforming and is now done while conforming to maximize performance.
    if (shouldConformResultsInUnitOfWork()
        || this.descriptor.shouldAlwaysConformResultsInUnitOfWork()) {
      return conformResult(result, unitOfWork, arguments, buildDirectlyFromRows);
    }

    // When building directly from rows, one of the performance benefits
    // is that we no longer have to wrap and then unwrap the originals.
    // result is just a vector, not a collection of wrapped originals.
    // Also for cursors the initial connection is automatically registered.
    if (buildDirectlyFromRows) {
      List<AbstractRecord> rows = (List<AbstractRecord>) result;
      ContainerPolicy cp = getContainerPolicy();
      int size = rows.size();
      Object clones = cp.containerInstance(size);
      for (int index = 0; index < size; index++) {
        AbstractRecord row = rows.get(index);

        // null is placed in the row collection for 1-m joining to filter duplicate rows.
        if (row != null) {
          Object clone = buildObject(row);
          cp.addInto(clone, clones, unitOfWork, row, this);
        }
      }
      return clones;
    }

    ContainerPolicy cp;
    Cursor cursor = null;

    // If the query is redirected then the collection returned might no longer
    // correspond to the original container policy.  CR#2342-S.M.
    if (getRedirector() != null) {
      cp = ContainerPolicy.buildPolicyFor(result.getClass());
    } else {
      cp = getContainerPolicy();
    }

    // In the case of cursors just register the initially read collection.
    if (cp.isCursorPolicy()) {
      cursor = (Cursor) result;
      // In nested UnitOfWork session might have been session of the parent.
      cursor.setSession(unitOfWork);
      cp = ContainerPolicy.buildPolicyFor(ClassConstants.Vector_class);
      result = cursor.getObjectCollection();
    }

    Object clones = cp.containerInstance(cp.sizeFor(result));
    AbstractSession sessionToUse = unitOfWork.getParent();
    for (Object iter = cp.iteratorFor(result); cp.hasNext(iter); ) {
      Object object = cp.next(iter, sessionToUse);
      Object clone = registerIndividualResult(object, unitOfWork, this.joinedAttributeManager);
      cp.addInto(clone, clones, unitOfWork);
    }
    if (cursor != null) {
      cursor.setObjectCollection((Vector) clones);
      return cursor;
    } else {
      return clones;
    }
  }