コード例 #1
0
  /**
   * Method to check if an element is already persistent, or is managed by a different
   * ExecutionContext. If not persistent, this will persist it.
   *
   * @param ec execution context
   * @param element The element
   * @param fieldValues any initial field values to use if persisting the element
   * @return Whether the element was persisted during this call
   */
  protected boolean validateElementForWriting(
      ExecutionContext ec, Object element, FieldValues fieldValues) {
    // TODO Pass in cascade flag and if element not present then throw exception
    // Check the element type for this collection
    if (!elementIsPersistentInterface
        && !validateElementType(ec.getClassLoaderResolver(), element)) {
      throw new ClassCastException(
          Localiser.msg(
              "056033",
              element.getClass().getName(),
              ownerMemberMetaData.getFullFieldName(),
              elementType));
    }

    boolean persisted = false;
    if (elementsAreEmbedded || elementsAreSerialised) {
      // Element is embedded/serialised so has no id
    } else {
      ObjectProvider elementSM = ec.findObjectProvider(element);
      if (elementSM != null && elementSM.isEmbedded()) {
        // Element is already with ObjectProvider and is embedded in another field!
        throw new NucleusUserException(
            Localiser.msg("056028", ownerMemberMetaData.getFullFieldName(), element));
      }

      persisted = SCOUtils.validateObjectForWriting(ec, element, fieldValues);
    }
    return persisted;
  }
コード例 #2
0
ファイル: Map.java プロジェクト: nbartels/datanucleus-core
  /**
   * Method to initialise the SCO from an existing value.
   *
   * @param m The object to set from
   * @param forInsert Whether the object needs inserting in the datastore with this value
   * @param forUpdate Whether to update the datastore with this value
   */
  public synchronized void initialise(java.util.Map m, boolean forInsert, boolean forUpdate) {
    if (m != null) {
      // Check for the case of serialised maps, and assign ObjectProviders to any PC keys/values
      // without
      if (SCOUtils.mapHasSerialisedKeysAndValues(ownerMmd)
          && (ownerMmd.getMap().keyIsPersistent() || ownerMmd.getMap().valueIsPersistent())) {
        ExecutionContext ec = ownerOP.getExecutionContext();
        Iterator iter = m.entrySet().iterator();
        while (iter.hasNext()) {
          Map.Entry entry = (Map.Entry) iter.next();
          Object key = entry.getKey();
          Object value = entry.getValue();
          if (ownerMmd.getMap().keyIsPersistent()) {
            ObjectProvider objSM = ec.findObjectProvider(key);
            if (objSM == null) {
              objSM =
                  ec.getNucleusContext()
                      .getObjectProviderFactory()
                      .newForEmbedded(ec, key, false, ownerOP, ownerMmd.getAbsoluteFieldNumber());
            }
          }
          if (ownerMmd.getMap().valueIsPersistent()) {
            ObjectProvider objSM = ec.findObjectProvider(value);
            if (objSM == null) {
              objSM =
                  ec.getNucleusContext()
                      .getObjectProviderFactory()
                      .newForEmbedded(ec, value, false, ownerOP, ownerMmd.getAbsoluteFieldNumber());
            }
          }
        }
      }

      if (backingStore != null && useCache && !isCacheLoaded) {
        // Mark as loaded
        isCacheLoaded = true;
      }

      if (forInsert) {
        if (NucleusLogger.PERSISTENCE.isDebugEnabled()) {
          NucleusLogger.PERSISTENCE.debug(
              Localiser.msg(
                  "023007", ownerOP.getObjectAsPrintable(), ownerMmd.getName(), "" + m.size()));
        }

        makeDirty();
        if (useCache) {
          // Make sure we have all values loaded (e.g if in optimistic tx and we put new entry)
          loadFromStore();
        }
        if (backingStore != null) {
          if (SCOUtils.useQueuedUpdate(ownerOP)) {
            Iterator iter = m.entrySet().iterator();
            while (iter.hasNext()) {
              Map.Entry entry = (Map.Entry) iter.next();
              ownerOP
                  .getExecutionContext()
                  .addOperationToQueue(
                      new MapPutOperation(ownerOP, backingStore, entry.getKey(), entry.getValue()));
            }
          } else {
            backingStore.putAll(ownerOP, m);
          }
        }
        delegate.putAll(m);
      } else if (forUpdate) {
        if (NucleusLogger.PERSISTENCE.isDebugEnabled()) {
          NucleusLogger.PERSISTENCE.debug(
              Localiser.msg(
                  "023008", ownerOP.getObjectAsPrintable(), ownerMmd.getName(), "" + m.size()));
        }

        // TODO This is clear+putAll. Improve it to work out what is changed
        delegate.clear();
        if (backingStore != null) {
          if (SCOUtils.useQueuedUpdate(ownerOP)) {
            // If not yet flushed to store then no need to add to queue (since will be handled via
            // insert)
            if (ownerOP.isFlushedToDatastore() || !ownerOP.getLifecycleState().isNew()) {
              ownerOP
                  .getExecutionContext()
                  .addOperationToQueue(new MapClearOperation(ownerOP, backingStore));
            }
          } else {
            backingStore.clear(ownerOP);
          }
        }
        if (useCache) {
          // Make sure we have all values loaded (e.g if in optimistic tx and we put new entry)
          loadFromStore();
        }

        if (backingStore != null) {
          if (SCOUtils.useQueuedUpdate(ownerOP)) {
            // If not yet flushed to store then no need to add to queue (since will be handled via
            // insert)
            if (ownerOP.isFlushedToDatastore() || !ownerOP.getLifecycleState().isNew()) {
              Iterator iter = m.entrySet().iterator();
              while (iter.hasNext()) {
                Map.Entry entry = (Map.Entry) iter.next();
                ownerOP
                    .getExecutionContext()
                    .addOperationToQueue(
                        new MapPutOperation(
                            ownerOP, backingStore, entry.getKey(), entry.getValue()));
              }
            }
          } else {
            backingStore.putAll(ownerOP, m);
          }
        }
        delegate.putAll(m);
        makeDirty();
      } else {
        if (NucleusLogger.PERSISTENCE.isDebugEnabled()) {
          NucleusLogger.PERSISTENCE.debug(
              Localiser.msg(
                  "023007", ownerOP.getObjectAsPrintable(), ownerMmd.getName(), "" + m.size()));
        }
        delegate.clear();
        delegate.putAll(m);
      }
    }
  }
コード例 #3
0
  protected static Object getObjectUsingNondurableIdForResult(
      final Result result,
      final AbstractClassMetaData cmd,
      final ExecutionContext ec,
      boolean ignoreCache,
      final int[] fpMembers,
      String tableName,
      StoreManager storeMgr,
      Table table) {
    if (cmd.hasDiscriminatorStrategy()) {
      // Check the class for this discriminator value
      String familyName = HBaseUtils.getFamilyNameForColumn(table.getDiscriminatorColumn());
      String columnName = HBaseUtils.getQualifierNameForColumn(table.getDiscriminatorColumn());
      Object discValue = new String(result.getValue(familyName.getBytes(), columnName.getBytes()));
      if (cmd.getDiscriminatorStrategy() == DiscriminatorStrategy.CLASS_NAME
          && !cmd.getFullClassName().equals(discValue)) {
        return null;
      } else if (cmd.getDiscriminatorStrategy() == DiscriminatorStrategy.VALUE_MAP
          && !cmd.getDiscriminatorValue().equals(discValue)) {
        return null;
      }
    }

    final FieldManager fm = new FetchFieldManager(ec, cmd, result, table);
    SCOID id = new SCOID(cmd.getFullClassName());
    Object pc =
        ec.findObject(
            id,
            new FieldValues() {
              // ObjectProvider calls the fetchFields method
              public void fetchFields(ObjectProvider op) {
                op.replaceFields(fpMembers, fm);
              }

              public void fetchNonLoadedFields(ObjectProvider op) {
                op.replaceNonLoadedFields(fpMembers, fm);
              }

              public FetchPlan getFetchPlanForLoading() {
                return null;
              }
            },
            null,
            ignoreCache,
            false);

    if (cmd.isVersioned()) {
      // Set the version on the object
      ObjectProvider op = ec.findObjectProvider(pc);
      Object version = null;
      VersionMetaData vermd = cmd.getVersionMetaDataForClass();
      if (vermd.getFieldName() != null) {
        // Set the version from the field value
        AbstractMemberMetaData verMmd = cmd.getMetaDataForMember(vermd.getFieldName());
        version = op.provideField(verMmd.getAbsoluteFieldNumber());
      } else {
        // Get the surrogate version from the datastore
        version = HBaseUtils.getSurrogateVersionForObject(cmd, result, tableName, storeMgr);
      }
      op.setVersion(version);
    }

    if (result.getRow() != null) {
      ObjectProvider sm = ec.findObjectProvider(pc);
      sm.setAssociatedValue("HBASE_ROW_KEY", result.getRow());
    }

    return pc;
  }
コード例 #4
0
  protected static Object getObjectUsingDatastoreIdForResult(
      final Result result,
      final AbstractClassMetaData cmd,
      final ExecutionContext ec,
      boolean ignoreCache,
      final int[] fpMembers,
      String tableName,
      StoreManager storeMgr,
      Table table) {
    if (cmd.hasDiscriminatorStrategy()) {
      // Check the class for this discriminator value
      String familyName = HBaseUtils.getFamilyNameForColumn(table.getDiscriminatorColumn());
      String columnName = HBaseUtils.getQualifierNameForColumn(table.getDiscriminatorColumn());
      Object discValue = new String(result.getValue(familyName.getBytes(), columnName.getBytes()));
      if (cmd.getDiscriminatorStrategy() == DiscriminatorStrategy.CLASS_NAME
          && !cmd.getFullClassName().equals(discValue)) {
        return null;
      } else if (cmd.getDiscriminatorStrategy() == DiscriminatorStrategy.VALUE_MAP
          && !cmd.getDiscriminatorValue().equals(discValue)) {
        return null;
      }
    }

    String dsidFamilyName = HBaseUtils.getFamilyNameForColumn(table.getDatastoreIdColumn());
    String dsidColumnName = HBaseUtils.getQualifierNameForColumn(table.getDatastoreIdColumn());
    Object id = null;
    try {
      byte[] bytes = result.getValue(dsidFamilyName.getBytes(), dsidColumnName.getBytes());
      if (bytes != null) {
        ByteArrayInputStream bis = new ByteArrayInputStream(bytes);
        ObjectInputStream ois = new ObjectInputStream(bis);
        Object key = ois.readObject();
        id =
            ec.getNucleusContext().getIdentityManager().getDatastoreId(cmd.getFullClassName(), key);
        ois.close();
        bis.close();
      } else {
        throw new NucleusException(
            "Retrieved identity for family="
                + dsidFamilyName
                + " column="
                + dsidColumnName
                + " IS NULL");
      }
    } catch (Exception e) {
      throw new NucleusException(e.getMessage(), e);
    }

    final FieldManager fm = new FetchFieldManager(ec, cmd, result, table);
    Object pc =
        ec.findObject(
            id,
            new FieldValues() {
              // ObjectProvider calls the fetchFields method
              public void fetchFields(ObjectProvider op) {
                op.replaceFields(fpMembers, fm);
              }

              public void fetchNonLoadedFields(ObjectProvider op) {
                op.replaceNonLoadedFields(fpMembers, fm);
              }

              public FetchPlan getFetchPlanForLoading() {
                return null;
              }
            },
            null,
            ignoreCache,
            false);

    if (cmd.isVersioned()) {
      // Set the version on the object
      ObjectProvider op = ec.findObjectProvider(pc);
      Object version = null;
      VersionMetaData vermd = cmd.getVersionMetaDataForClass();
      if (vermd.getFieldName() != null) {
        // Set the version from the field value
        AbstractMemberMetaData verMmd = cmd.getMetaDataForMember(vermd.getFieldName());
        version = op.provideField(verMmd.getAbsoluteFieldNumber());
      } else {
        // Get the surrogate version from the datastore
        version = HBaseUtils.getSurrogateVersionForObject(cmd, result, tableName, storeMgr);
      }
      op.setVersion(version);
    }

    if (result.getRow() != null) {
      ObjectProvider sm = ec.findObjectProvider(pc);
      sm.setAssociatedValue("HBASE_ROW_KEY", result.getRow());
    }

    return pc;
  }
コード例 #5
0
ファイル: TreeSet.java プロジェクト: virajb/datanucleus-core
  /**
   * Method to initialise the SCO from an existing value.
   *
   * @param o The object to set from
   * @param forInsert Whether the object needs inserting in the datastore with this value
   * @param forUpdate Whether to update the datastore with this value
   */
  public void initialise(Object o, boolean forInsert, boolean forUpdate) {
    Collection c = (Collection) o;
    if (c != null) {
      // Check for the case of serialised PC elements, and assign ObjectProviders to the elements
      // without
      if (SCOUtils.collectionHasSerialisedElements(ownerMmd)
          && ownerMmd.getCollection().elementIsPersistent()) {
        ExecutionContext ec = ownerOP.getExecutionContext();
        Iterator iter = c.iterator();
        while (iter.hasNext()) {
          Object pc = iter.next();
          ObjectProvider objSM = ec.findObjectProvider(pc);
          if (objSM == null) {
            objSM =
                ec.newObjectProviderForEmbedded(
                    pc, false, ownerOP, ownerMmd.getAbsoluteFieldNumber());
          }
        }
      }

      if (backingStore != null && useCache && !isCacheLoaded) {
        // Mark as loaded
        isCacheLoaded = true;
      }

      if (forInsert) {
        if (NucleusLogger.PERSISTENCE.isDebugEnabled()) {
          NucleusLogger.PERSISTENCE.debug(
              LOCALISER.msg(
                  "023007", ownerOP.getObjectAsPrintable(), ownerMmd.getName(), "" + c.size()));
        }

        if (useCache) {
          loadFromStore();
        }
        if (ownerOP != null && ownerOP.getExecutionContext().getManageRelations()) {
          // Relationship management
          Iterator iter = c.iterator();
          RelationshipManager relMgr =
              ownerOP.getExecutionContext().getRelationshipManager(ownerOP);
          while (iter.hasNext()) {
            relMgr.relationAdd(ownerMmd.getAbsoluteFieldNumber(), iter.next());
          }
        }
        if (backingStore != null) {
          if (SCOUtils.useQueuedUpdate(queued, ownerOP)) {
            for (Object element : c) {
              ownerOP
                  .getExecutionContext()
                  .addOperationToQueue(new CollectionAddOperation(ownerOP, backingStore, element));
            }
          } else {
            try {
              backingStore.addAll(ownerOP, c, (useCache ? delegate.size() : -1));
            } catch (NucleusDataStoreException dse) {
              NucleusLogger.PERSISTENCE.warn(
                  LOCALISER.msg("023013", "addAll", ownerMmd.getName(), dse));
            }
          }
        }
        delegate.addAll(c);
        makeDirty();
      } else if (forUpdate) {
        if (NucleusLogger.PERSISTENCE.isDebugEnabled()) {
          NucleusLogger.PERSISTENCE.debug(
              LOCALISER.msg(
                  "023008", ownerOP.getObjectAsPrintable(), ownerMmd.getName(), "" + c.size()));
        }

        // Detect which objects are added and which are deleted
        if (useCache) {
          isCacheLoaded = false; // Mark as false since need to load the old collection
          loadFromStore();

          for (Object elem : c) {
            if (!delegate.contains(elem)) {
              add(elem);
            }
          }
          java.util.TreeSet delegateCopy = new java.util.TreeSet(delegate);
          for (Object elem : delegateCopy) {
            if (!c.contains(elem)) {
              remove(elem);
            }
          }
        } else {
          for (Object elem : c) {
            if (!contains(elem)) {
              add(elem);
            }
          }
          Iterator iter = iterator();
          while (iter.hasNext()) {
            Object elem = iter.next();
            if (!c.contains(elem)) {
              remove(elem);
            }
          }
        }
      } else {
        if (NucleusLogger.PERSISTENCE.isDebugEnabled()) {
          NucleusLogger.PERSISTENCE.debug(
              LOCALISER.msg(
                  "023007", ownerOP.getObjectAsPrintable(), ownerMmd.getName(), "" + c.size()));
        }
        delegate.clear();
        delegate.addAll(c);
      }
    }
  }
コード例 #6
0
  /**
   * Method to initialise the SCO from an existing value.
   *
   * @param c The object to set from
   * @param forInsert Whether the object needs inserting in the datastore with this value
   * @param forUpdate Whether to update the SCO in the datastore with this value
   */
  public void initialise(java.util.ArrayList c, boolean forInsert, boolean forUpdate) {
    if (c != null) {
      // Check for the case of serialised PC elements, and assign ObjectProviders to the elements
      // without
      if (SCOUtils.collectionHasSerialisedElements(ownerMmd)
          && ownerMmd.getCollection().elementIsPersistent()) {
        ExecutionContext ec = ownerOP.getExecutionContext();
        Iterator iter = c.iterator();
        while (iter.hasNext()) {
          Object pc = iter.next();
          ObjectProvider objOP = ec.findObjectProvider(pc);
          if (objOP == null) {
            objOP =
                ec.getNucleusContext()
                    .getObjectProviderFactory()
                    .newForEmbedded(ec, pc, false, ownerOP, ownerMmd.getAbsoluteFieldNumber());
          }
        }
      }

      if (backingStore != null && useCache && !isCacheLoaded) {
        // Mark as loaded so we just use the value
        isCacheLoaded = true;
      }

      if (forInsert) {
        if (NucleusLogger.PERSISTENCE.isDebugEnabled()) {
          NucleusLogger.PERSISTENCE.debug(
              Localiser.msg(
                  "023007", ownerOP.getObjectAsPrintable(), ownerMmd.getName(), "" + c.size()));
        }
        if (useCache) {
          loadFromStore();
        }
        if (backingStore != null) {
          if (SCOUtils.useQueuedUpdate(queued, ownerOP)) {
            for (Object element : c) {
              ownerOP
                  .getExecutionContext()
                  .addOperationToQueue(new CollectionAddOperation(ownerOP, backingStore, element));
            }
          } else {
            try {
              backingStore.addAll(ownerOP, c, (useCache ? delegate.size() : -1));
            } catch (NucleusDataStoreException dse) {
              NucleusLogger.PERSISTENCE.warn(
                  Localiser.msg("023013", "addAll", ownerMmd.getName(), dse));
            }
          }
        }
        makeDirty();
        delegate.addAll(c);
      } else if (forUpdate) {
        if (NucleusLogger.PERSISTENCE.isDebugEnabled()) {
          NucleusLogger.PERSISTENCE.debug(
              Localiser.msg(
                  "023008", ownerOP.getObjectAsPrintable(), ownerMmd.getName(), "" + c.size()));
        }

        // TODO This does clear+addAll : Improve this and work out which elements are added and
        // which deleted
        if (backingStore != null) {
          if (SCOUtils.useQueuedUpdate(queued, ownerOP)) {
            ownerOP
                .getExecutionContext()
                .addOperationToQueue(new CollectionClearOperation(ownerOP, backingStore));
          } else {
            backingStore.clear(ownerOP);
          }
        }

        if (useCache) {
          loadFromStore();
        }
        if (backingStore != null) {
          if (SCOUtils.useQueuedUpdate(queued, ownerOP)) {
            for (Object element : c) {
              ownerOP
                  .getExecutionContext()
                  .addOperationToQueue(new CollectionAddOperation(ownerOP, backingStore, element));
            }
          } else {
            try {
              backingStore.addAll(ownerOP, c, (useCache ? delegate.size() : -1));
            } catch (NucleusDataStoreException dse) {
              NucleusLogger.PERSISTENCE.warn(
                  Localiser.msg("023013", "addAll", ownerMmd.getName(), dse));
            }
          }
        }
        delegate.addAll(c);
        makeDirty();
      } else {
        if (NucleusLogger.PERSISTENCE.isDebugEnabled()) {
          NucleusLogger.PERSISTENCE.debug(
              Localiser.msg(
                  "023007", ownerOP.getObjectAsPrintable(), ownerMmd.getName(), "" + c.size()));
        }
        delegate.clear();
        delegate.addAll(c);
      }
    }
  }