Author: abelevich Date: 2007-05-28 14:11:47 -0400 (Mon, 28 May 2007) New Revision: 901 Added: trunk/sandbox/scrollable-grid/src/main/java/org/richfaces/model/cashe/ trunk/sandbox/scrollable-grid/src/main/java/org/richfaces/model/cashe/DataGridCache.java Log: Added: trunk/sandbox/scrollable-grid/src/main/java/org/richfaces/model/cashe/DataGridCache.java =================================================================== --- trunk/sandbox/scrollable-grid/src/main/java/org/richfaces/model/cashe/DataGridCache.java (rev 0) +++ trunk/sandbox/scrollable-grid/src/main/java/org/richfaces/model/cashe/DataGridCache.java 2007-05-28 18:11:47 UTC (rev 901) @@ -0,0 +1,158 @@ +/* + * Copyright + * Copyright (c) Exadel,Inc. 2007 + * All rights reserved. + * + * History + * $Source: /cvs-master/intralinks-jsf-comps/components/data-view-grid/src/component/com/exadel/jsf/model/cache/DataGridCache.java,v $ + * $Revision: 1.2 $ + */ + +package org.richfaces.model.cashe; + +import java.io.IOException; +import java.util.Collection; +import java.util.HashMap; +import java.util.Map; + +import javax.faces.context.FacesContext; +import javax.faces.model.DataModelListener; + +import org.ajax4jsf.ajax.repeat.DataVisitor; +import org.ajax4jsf.ajax.repeat.Range; +import org.apache.commons.logging.Log; +import org.apache.commons.logging.LogFactory; +import org.richfaces.model.DataRange; +import org.richfaces.model.ScrollableGridDataModel2; +import org.richfaces.model.SortOrder; +import org.richfaces.model.snapshot.ObjectLocator; + + + +/** + * @author Maksim Kaszynski + * + */ +public class DataGridCache extends ScrollableGridDataModel2 { + + private final static Log log = LogFactory.getLog(DataGridCache.class); + + private ScrollableGridDataModel2 dataModel; + private Map cache = new HashMap(); + + public DataGridCache(ScrollableGridDataModel2 model) { + dataModel = model; + } + + public void walk(FacesContext context, DataVisitor visitor, Range range, Object argument) throws IOException { + dataModel.walk(context, visitor, range, argument); + } + + /** + * @see com.exadel.jsf.model.ScrollableGridDataModel2#createDataRange(int, int, com.exadel.jsf.model.SortOrder) + */ + protected DataRange createDataRange(int startRow, int endRow, + SortOrder sortOrder) { + return null; + } + + /** + * @see javax.faces.model.DataModel#getRowCount() + */ + public int getRowCount() { + return dataModel.getRowCount(); + } + + /** + * @see javax.faces.model.DataModel#getRowIndex() + */ + public int getRowIndex() { + return dataModel.getRowIndex(); + } + + /** + * @see javax.faces.model.DataModel#getWrappedData() + */ + public Object getWrappedData() { + return dataModel; + } + + /** + * @see javax.faces.model.DataModel#isRowAvailable() + */ + public boolean isRowAvailable() { + return dataModel.isRowAvailable(); + } + + /** + * @see javax.faces.model.DataModel#setRowIndex(int) + */ + public void setRowIndex(int rowIndex) { + dataModel.setRowIndex(rowIndex); + } + + /** + * @see javax.faces.model.DataModel#setWrappedData(java.lang.Object) + */ + public void setWrappedData(Object data) { + dataModel = (ScrollableGridDataModel2) data; + } + + public ObjectLocator getObjectLocator() { + return dataModel.getObjectLocator(); + } + + public Object getRowData() { + Object rowKey = getRowKey(); + Object data = null; + if (rowKey != null) { + data = cache.get(rowKey); + if (data == null) { + if (log.isDebugEnabled()) { + log.debug("DataGridCache.getRowData() - cache miss: rowKey " + rowKey); + } + data = dataModel.getRowData(); + cache.put(rowKey, data); + } else { + log.debug("DataGridCache.getRowData() - cache hit: rowKey " + rowKey); + } + } else { + log.debug("DataGridCache.getRowData() rowKey is null"); + } + return data; + } + + public Object getRowKey() { + return dataModel.getRowKey(); + } + +// public Collection getSelectedObjects() { +// return dataModel.getSelectedObjects(); +// } + +// public Selection getSelection() { +// return dataModel.getSelection(); +// } + + public void removeDataModelListener(DataModelListener listener) { + dataModel.removeDataModelListener(listener); + } + + public void reset() { + dataModel.reset(); + } + + public void setObjectLocator(ObjectLocator objectLocator) { + dataModel.setObjectLocator(objectLocator); + } + + public void setRowKey(Object key) { + dataModel.setRowKey(key); + } + +// public void setSelection(Selection selection) { +// dataModel.setSelection(selection); +// } + + +}