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The public API classes of the Apache MyFaces CORE JSF-2.2 project
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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package jakarta.faces.model;
import org.apache.myfaces.core.api.shared.lang.Assert;
/**
* see Javadoc of Faces Specification
*/
public class ArrayDataModel extends DataModel
{
// FIELDS
private int _rowIndex = -1;
private E[] _data;
// CONSTRUCTORS
public ArrayDataModel()
{
super();
}
public ArrayDataModel(E[] array)
{
Assert.notNull(array, "array");
setWrappedData(array);
}
// METHODS
@Override
public int getRowCount()
{
if (_data == null)
{
return -1;
}
return _data.length;
}
@Override
public E getRowData()
{
if (_data == null)
{
return null;
}
if (!isRowAvailable())
{
throw new IllegalArgumentException("row is unavailable");
}
return _data[_rowIndex];
}
@Override
public int getRowIndex()
{
return _rowIndex;
}
@Override
public Object getWrappedData()
{
return _data;
}
@Override
public boolean isRowAvailable()
{
return _data != null && _rowIndex >= 0 && _rowIndex < _data.length;
}
@Override
public void setRowIndex(int rowIndex)
{
if (rowIndex < -1)
{
throw new IllegalArgumentException("illegal rowIndex " + rowIndex);
}
int oldRowIndex = _rowIndex;
_rowIndex = rowIndex;
if (_data != null && oldRowIndex != _rowIndex)
{
Object data = isRowAvailable() ? getRowData() : null;
DataModelEvent event = new DataModelEvent(this, _rowIndex, data);
DataModelListener[] listeners = getDataModelListeners();
for (int i = 0; i < listeners.length; i++)
{
listeners[i].rowSelected(event);
}
}
}
@Override
public void setWrappedData(Object data)
{
if (data == null)
{
setRowIndex(-1);
_data = null;
}
else
{
_data = (E[])data;
_rowIndex = -1;
setRowIndex(0);
}
}
}
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