Examples of org.apache.myfaces.trinidad.model.CollectionModel

Package org.apache.myfaces.trinidad.model

Examples of org.apache.myfaces.trinidad.model.CollectionModel

org.apache.myfaces.trinidad.model.CollectionModel
The data model that is used by the Trinidad Table and Iterator components. This extends the Faces DataModel class and adds on support for rowKeys and sorting. Ordinary DataModels are still supported, and will automatically be wrapped into CollectionModels, but without the added functionality.

Row key support

In the Faces DataModel, rows are identified entirely by index. This causes major problems if the underlying data changes from one request to the next - a user request to delete one row may delete a different row because a row got added by another user, etc. To work around this, CollectionModel is based around row keys instead of indices. An implementation of CollectionModel must implement getRowKey() and setRowKey(), and handle conversion from integer indices to row keys. A trivial implementation might simply use Integer objects as the row keys, but a better version could use a unique ID in the row.
@author The Oracle ADF Faces Team

   * @see CollectionModel#getRowData
   * @return null if the current row is unavailable
   */
  public final Object getRowData()
  {
    CollectionModel model = getCollectionModel();
    // we need to call isRowAvailable() here because the 1.0 sun RI was
    // throwing exceptions when getRowData() was called with rowIndex=-1
    return model.isRowAvailable() ? model.getRowData() : null;
  }

View Full Code Here

  @Override
  protected CollectionModel createCollectionModel(
    CollectionModel current,
    Object value)
  {
    CollectionModel model = ModelUtils.toCollectionModel(value); 
    // initialize to -1. we need to do this incase some application logic
    // changed this index. Also, some JSF1.0 RI classes were initially starting
    // with a rowIndex of 0.
    // we need this to be -1 because of name-transformation.
    model.setRowIndex(-1);
    assert model.getRowIndex() == -1 : "RowIndex did not reset to -1";
    return model;
  }

View Full Code Here

    {
      setFirst(0);
      return;
    }


    CollectionModel model = getCollectionModel();
    int oldIndex = model.getRowIndex();
    try
    {
      model.setRowIndex(first);
      // if the starting row doesn't exist then we need to scroll back:
      if (!model.isRowAvailable())
      {
        int size = model.getRowCount();
        int rows = getRows();
        // if the rowCount is unknown OR
        //    the blockSize is show all OR
        //    there are fewer rows than the blockSize on the table
        // then start from the beginning:
        if ((size <= 0) || (rows <= 0) || (size <= rows))
          first = 0;
        else
        {
          // scroll to the last page: 
          first = size - rows;
          model.setRowIndex(first);
          // make sure the row is indeed available:
          if (!model.isRowAvailable())
          {
            // row is not available. this happens when getRowCount() lies.
            // Some DataModel implementations seem to have rowCount methods which
            // lie. see bug 4157186
            first = 0;
          }
        }
        setFirst(first);
      }
    }
    finally
    {
      model.setRowIndex(oldIndex);
    }
  }

View Full Code Here

   * @see CollectionModel#getRowData
   * @return null if the current row is unavailable
   */
  public final Object getRowData()
  {
    CollectionModel model = getCollectionModel();
    // we need to call isRowAvailable() here because the 1.0 sun RI was
    // throwing exceptions when getRowData() was called with rowIndex=-1
    return model.isRowAvailable() ? model.getRowData() : null;
  }

View Full Code Here

   * @see CollectionModel#getRowData(int)
   * @return null if the current row is unavailable
   */
  public final Object getRowData()
  {
    CollectionModel model = getCollectionModel();
    // we need to call isRowAvailable() here because the 1.0 sun RI was
    // throwing exceptions when getRowData() was called with rowIndex=-1
    return model.isRowAvailable() ? model.getRowData() : null;
  }

View Full Code Here

   * @see CollectionModel#getRowData
   * @return null if the current row is unavailable
   */
  public final Object getRowData()
  {
    CollectionModel model = _getDataModel();
    // we need to call isRowAvailable() here because the 1.0 sun RI was
    // throwing exceptions when getRowData() was called with rowIndex=-1
    return model.isRowAvailable() ? model.getRowData() : null;
  }

View Full Code Here

   * @see CollectionModel#getRowData(int)
   * @return null if the current row is unavailable
   */
  public final Object getRowData(int rowIndex)
  {
    CollectionModel model = _getDataModel();
    // we need to call isRowAvailable() here because the 1.0 sun RI was
    // throwing exceptions when getRowData() was called with rowIndex=-1
    return model.isRowAvailable(rowIndex) ? model.getRowData(rowIndex) : null;
  }

View Full Code Here

  @Override
  protected CollectionModel createCollectionModel(
    CollectionModel current,
    Object value)
  {
    CollectionModel model = ModelUtils.toCollectionModel(value);
    // initialize to -1. we need to do this incase some application logic
    // changed this index. Also, some JSF1.0 RI classes were initially starting
    // with a rowIndex of 0.
    // we need this to be -1 because of name-transformation.
    model.setRowIndex(-1);
    assert model.getRowIndex() == -1 : "RowIndex did not reset to -1";
    return model;
  }

View Full Code Here

    {
      setFirst(0);
      return;
    }


    CollectionModel model = getCollectionModel();
    int oldIndex = model.getRowIndex();
    try
    {
      model.setRowIndex(first);
      // if the starting row doesn't exist then we need to scroll back:
      if (!model.isRowAvailable())
      {
        int size = model.getRowCount();
        int rows = getRows();
        // if the rowCount is unknown OR
        //    the blockSize is show all OR
        //    there are fewer rows than the blockSize on the table
        // then start from the beginning:
        if ((size <= 0) || (rows <= 0) || (size <= rows))
          first = 0;
        else
        {
          // scroll to the last page:
          first = size - rows;
          model.setRowIndex(first);
          // make sure the row is indeed available:
          if (!model.isRowAvailable())
          {
            // row is not available. this happens when getRowCount() lies.
            // Some DataModel implementations seem to have rowCount methods which
            // lie. see bug 4157186
            first = 0;
          }
        }
        setFirst(first);
      }
    }
    finally
    {
      model.setRowIndex(oldIndex);
    }
  }

View Full Code Here

    RowKeySet state = getSelectedRowKeys();
    Iterator<Object> keys = state.iterator();
    if (keys.hasNext())
    {
      Object key = keys.next();
      CollectionModel model = getCollectionModel();
      Object old = model.getRowKey();
      try
      {
        model.setRowKey(key);
        if (isRowAvailable())
          return model.getRowData();
      }
      finally
      {
        model.setRowKey(old);
      }
    }
    return null;
  }

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of org.apache.myfaces.trinidad.model.CollectionModel

org.adfemg.datacontrol.lov.ModelImpl

org.apache.myfaces.trinidad.component.UIXCollection

org.apache.myfaces.trinidad.component.UIXIterator

org.apache.myfaces.trinidad.component.UIXIteratorTemplate

org.apache.myfaces.trinidad.component.UIXSelectRange

org.apache.myfaces.trinidad.component.UIXSelectRangeTemplate

org.apache.myfaces.trinidad.component.UIXTable

org.apache.myfaces.trinidad.component.UIXTableTemplate

org.apache.myfaces.trinidad.model.RowKeySetImplTest

org.jboss.seam.example.seamdiscs.test.DisplayArtistTest

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.

Examples of org.apache.myfaces.trinidad.model.CollectionModel

Row key support

Related Classes of org.apache.myfaces.trinidad.model.CollectionModel