Examples of org.openbp.server.persistence.PersistenceContext

org.openbp.server.persistence.PersistenceContext
Context object that contains information regarding access to a persistence store. The implementation of this object depends on the type of persistence store. For example, it can encapsulate a JDBC connection or an O/R mapper session. This object should be rather lightweight than heavyweight. @author Heiko Erhardt

   *
   * @param model Model to reload
   */
  protected void reloadModelAfterModelUpdate(Model model)
  {
    PersistenceContext pc = getPersistenceContextProvider().obtainPersistenceContext();
    try
    {
      DbModel dbModel = findDbModel(pc, model.getName());
      dbModel = (DbModel) pc.refreshObject(dbModel);


      Model newModel = dbModelToModel(dbModel);
      try
      {
        model.copyFrom(newModel, Copyable.COPY_SHALLOW);
      }
      catch (CloneNotSupportedException e)
      {
        // Doesn't happen
      }


      // Repair hiearchy, establish links and instantiate the model
      model.maintainReferences(ModelObject.RESOLVE_GLOBAL_REFS | ModelObject.RESOLVE_LOCAL_REFS | ModelObject.INSTANTIATE_ITEM);
    }
    catch (PersistenceException e)
    {
      pc.rollbackTransaction();
      pc.release();
      throw new ModelException("DatabaseOperation", "Error reloading descriptor of model '" + model.getQualifier() + "' to the database: "
        + e.getMessage(), e);
    }
  }

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   *
   * @param item Item to reload
   */
  protected void reloadItemAfterModelUpdate(Item item)
  {
    PersistenceContext pc = getPersistenceContextProvider().obtainPersistenceContext();
    try
    {
      DbModelItem dbModelItem = findDbModelItem(pc, item);
      dbModelItem = (DbModelItem) pc.refreshObject(dbModelItem);


      Item newItem = dbModelItemToItem(dbModelItem);
      try
      {
        item.copyFrom(newItem, Copyable.COPY_SHALLOW);
      }
      catch (CloneNotSupportedException e)
      {
        // Doesn't happen
      }


      // Repair hiearchy, establish links and instantiate the model
      item.maintainReferences(ModelObject.RESOLVE_GLOBAL_REFS | ModelObject.RESOLVE_LOCAL_REFS | ModelObject.INSTANTIATE_ITEM);
    }
    catch (PersistenceException e)
    {
      pc.rollbackTransaction();
      pc.release();
      throw new ModelException("DatabaseOperation", "Error reloading descriptor of component '" + item.getQualifier() + "' to the database: "
        + e.getMessage(), e);
    }
  }

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   * @param itemQualifier Fully qualified name of the item to read
   * @return The new item or null (error messages go to the message container)
   */
  protected Item readItemFromStore(ModelQualifier itemQualifier)
  {
    PersistenceContext pc = getPersistenceContextProvider().obtainPersistenceContext();
    TransactionGuard tg = new TransactionGuard(pc);
    try
    {
      DbModelItem dbModelItem = findDbModelItem(pc, itemQualifier.getModel(), itemQualifier.getItem(), itemQualifier.getItemType());

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  public static boolean isSerializableObject(Object object, PersistenceContextProvider pcp)
  {
    if (object != null)
    {
      PersistenceContext pc = pcp.obtainPersistenceContext();


      if (pc != null)
      {
        if (pc.isPersistentObject(object))
          return true;
      }
    }
    return false;
  }

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  {
    Object ret = object;


    if (ret != null)
    {
      PersistenceContext pc = pcp.obtainPersistenceContext();


      if (pc != null)
      {
        if (pc.isPersistentObject(ret))
        {
          // Get the id of the object
          Object id = pc.getObjectId(ret);
          if (isNullId(id))
          {
            pc.saveObject(ret);
            id = pc.getObjectId(ret);


            // Object is new, may require a flush
            if (isNullId(id))
            {
              LogUtil.debug(PersistenceContextObjectSerializer.class, "Performing persistence context flush in order to serialize id of object $0 (variable $1).", object, key);
              pc.flush();
              id = pc.getObjectId(ret);
            }
          }


          if (! isNullId(id))
          {

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   * 
   * @return The new context
   */
  public TokenContext createContext()
  {
    PersistenceContext pc = getPersistenceContextProvider().obtainPersistenceContext();
    return (TokenContext) pc.createEntity(TokenContext.class);
  }

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    return getProcessServer().getEngine().getPersistenceContextProvider().obtainPersistenceContext();
  }


  protected void quietTableDelete(String tableName)
  {
    PersistenceContext pc = getProcessServer().getEngine().getPersistenceContextProvider().obtainPersistenceContext();
    pc.beginTransaction();
    try
    {
      pc.executeUpdateOrDelete("DELETE FROM " + tableName);
      pc.commitTransaction();
    }
    catch (Exception e)
    {
      // Ignore any
    }

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  {
  }


  public PersistedComplexParam createPersistedComplexParam()
  {
    PersistenceContext pc = getProcessServer().getEngine().getPersistenceContextProvider().obtainPersistenceContext();


    PersistedComplexParam ret = (PersistedComplexParam) pc.createEntity(CayennePersistedComplexParam.class);


    ret.setTitle("Workflow task test 1");


    pc.saveObject(ret);
    pc.commitTransaction();


    return ret;
  }

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   * Template method override for Cayenne-specific object class.
   * @return The new object, which extends CayenneDataObject
   */
  public PersistedComplexParam createPersistedComplexParam()
  {
    PersistenceContext pc = getProcessServer().getEngine().getPersistenceContextProvider().obtainPersistenceContext();


    PersistedComplexParam ret = (PersistedComplexParam) pc.createEntity(CayennePersistedComplexParam.class);


    ret.setTitle("Workflow task test 1");


    pc.saveObject(ret);
    pc.commitTransaction();


    return ret;
  }

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Related Classes of org.openbp.server.persistence.PersistenceContext

org.openbp.model.system.activity.DeleteObjectActivity

org.openbp.model.system.activity.SaveObjectActivity

org.openbp.server.context.PersistentTokenContextService

org.openbp.server.context.serializer.PersistenceContextObjectSerializer

org.openbp.server.context.TokenContextServiceBase

org.openbp.server.engine.script.ExpressionParser

org.openbp.server.model.modelmgr.DatabaseModelMgr

org.openbp.server.test.base.DatabaseTestCaseBase

org.openbp.server.test.CayenneMultiThreadWorkflowTaskTest

org.openbp.server.test.CayenneWorkflowTaskTest

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