Examples of org.dmlite.model.DomainModel

org.dmlite.model.DomainModel

A domain model can be accessed only through one or more entries. An entry is an object of the IEntities type. The model is implemented as a map of entries. An entry kay is the concept configuration and the entry value is an object of the IEntities type.

The model has a configuration that comes from the last model specification in the specific-model-config.xml file. The model configuration contains a configuration of the model concepts. There are three model configuration files: specific-model-config.xml, reusable-model-config.xml and dmLite-model-config.xml. Predefined dmLite model concept configurations are located in the dmLite-model-config.xml. They can be inherited by the specific model configuration through the reusable model configuration. The reusable model configuration may have user defined concepts. A domain model cannot be created without at least the specific model configuration.

The model changes can be observed by an object of the Observer type. An observer is used to persist domain model data. However, the model does not have any knowledge of a persistence mechanism. The model changes are reported to the observer only after the model is initialized (e.g., loaded from a persistence store).

The model meta handling is done by the model property of the ModelMeta type. An example of meta handling is a creation of the concept entry entities given the full class name (found in the the model concept configuration).
@author Dzenan Ridjanovic @version 2006-11-20

   *            specific model configuration file path
   */
  public PersistentModel(String modelCode, String dmLiteModelConfigFilePath,
      String reusableModelConfigFilePath,
      String specificModelConfigFilePath) {
    domainModel = new DomainModel(modelCode, dmLiteModelConfigFilePath,
        reusableModelConfigFilePath, specificModelConfigFilePath);
    DomainModel dm = (DomainModel) domainModel;
    dm.addObserver(this);
    ModelConfig modelConfig = domainModel.getModelConfig();
    if (modelConfig.isPersistent()) {
      createPersistentEntries();
    }
  }

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      throw new ActionException(e.getMessage(), this);
    }
    if (executed) {
      setStatus("executed");
      if (getTransaction() == null) {
        DomainModel domainModel = (DomainModel) getSession()
            .getDomainModel();
        domainModel.notifyObservers(this);
      }
    }
    return executed;
  }

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      throw new ActionException(e.getMessage(), this);
    }
    if (undone) {
      setStatus("undone");
      if (getTransaction() == null) {
        DomainModel domainModel = (DomainModel) getSession()
            .getDomainModel();
        domainModel.notifyObservers(this);
      }
    }
    return undone;
  }

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   * Executes the transaction.
   * 
   * @return <code>true</code> if executed
   */
  public boolean execute() throws ActionException {
    DomainModel domainModel = (DomainModel) getSession().getDomainModel();
    if (!domainModel.isSession()) {
      String error = "The domain model is not configured for transactions.";
      throw new ActionException(error, this);
    } else if (getSession() == null) {
      String error = "Transaction must be within a session.";
      throw new ActionException(error, this);
    }
    boolean executed = actions.executeAll();
    if (executed) {
      setStatus("executed");
      domainModel.notifyObservers(this);
    } else {
      actions.undoAll();
    }
    return executed;
  }

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      throw new ActionException(error, this);
    }
    boolean undone = actions.undoAll();
    if (undone) {
      setStatus("undone");
      DomainModel domainModel = (DomainModel) getSession()
          .getDomainModel();
      domainModel.notifyObservers(this);
    } else {
      actions.executeAll();
    }
    return undone;
  }

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   * @param modelCode
   *            model code
   */
  public ModelContext(String modelCode) {
    super();
    domainModel = new DomainModel(modelCode,
        getDmLiteModelConfigFilePath(),
        getReusableModelConfigFilePath(),
        getSpecificModelConfigFilePath());
  }

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Related Classes of org.dmlite.model.DomainModel

org.dmlite.model.action.EntitiesAction

org.dmlite.model.action.Transaction

org.dmlite.model.config.ConceptConfig

org.dmlite.model.config.DmConfig

org.dmlite.model.context.ModelContext

org.dmlite.model.persistent.PersistentModel

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