Constructor and Description |
---|
ArrayDataModel()
Construct a new
ArrayDataModel with no specified wrapped data. |
ArrayDataModel(E[] array)
Construct a new
ArrayDataModel wrapping the specified array. |
Modifier and Type | Method and Description |
---|---|
int |
getRowCount()
If there is
wrappedData available, return the length of the array. |
E |
getRowData()
If row data is available, return the array element at the index specified by
rowIndex . |
int |
getRowIndex()
Return the zero-relative index of the currently selected row.
|
java.lang.Object |
getWrappedData()
Return the object representing the data wrapped by this
DataModel , if any. |
boolean |
isRowAvailable()
Return
true if there is wrappedData available, and the current value of
rowIndex is greater than or equal to zero, and less than the length of the array. |
void |
setRowIndex(int rowIndex)
Set the zero-relative index of the currently selected row, or -1 to indicate that we are not positioned on a row.
|
void |
setWrappedData(java.lang.Object data)
Set the object representing the data collection wrapped by this
DataModel . |
addDataModelListener, getDataModelListeners, iterator, removeDataModelListener
public ArrayDataModel()
Construct a new ArrayDataModel
with no specified wrapped data.
public ArrayDataModel(E[] array)
Construct a new ArrayDataModel
wrapping the specified array.
array
- Array to be wrapped (if any)public boolean isRowAvailable()
Return true
if there is wrappedData
available, and the current value of
rowIndex
is greater than or equal to zero, and less than the length of the array. Otherwise, return
false
.
isRowAvailable
in class DataModel<E>
FacesException
- if an error occurs getting the row availabilitypublic int getRowCount()
If there is wrappedData
available, return the length of the array. If no wrappedData
is
available, return -1.
getRowCount
in class DataModel<E>
DataModel
FacesException
- if an error occurs getting the row countpublic E getRowData()
If row data is available, return the array element at the index specified by rowIndex
. If no wrapped
data is available, return null
.
getRowData
in class DataModel<E>
FacesException
- if an error occurs getting the row datajava.lang.IllegalArgumentException
- if now row data is available at the currently specified row indexpublic int getRowIndex()
DataModel
Return the zero-relative index of the currently selected row. If we are not currently positioned on a row, or no
wrappedData
is available, return -1.
getRowIndex
in class DataModel<E>
FacesException
- if an error occurs getting the row indexpublic void setRowIndex(int rowIndex)
DataModel
Set the zero-relative index of the currently selected row, or -1 to indicate that we are not positioned on a row. It
is possible to set the row index at a value for which the underlying data collection does not contain any row data.
Therefore, callers may use the isRowAvailable()
method to detect whether row data will be available for
use by the getRowData()
method.
If there is no wrappedData
available when this method is called, the specified rowIndex
is
stored (and may be retrieved by a subsequent call to getRowData()
), but no event is sent. Otherwise, if
the currently selected row index is changed by this call, a DataModelEvent
will be sent to the
rowSelected()
method of all registered DataModelListener
s.
setRowIndex
in class DataModel<E>
rowIndex
- The new zero-relative index (must be non-negative)FacesException
- if an error occurs setting the row indexjava.lang.IllegalArgumentException
- if rowIndex
is less than -1public java.lang.Object getWrappedData()
DataModel
Return the object representing the data wrapped by this DataModel
, if any.
getWrappedData
in class DataModel<E>
Object
that this model wraps.public void setWrappedData(java.lang.Object data)
DataModel
Set the object representing the data collection wrapped by this DataModel
. If the specified data
is null
, detach this DataModel
from any previously wrapped data collection instead.
If data
is non-null
, the currently selected row index must be set to zero, and a
DataModelEvent
must be sent to the rowSelected()
method of all registered
DataModelListener
s indicating that this row is now selected.
setWrappedData
in class DataModel<E>
data
- Data collection to be wrapped, or null
to detach from any previous data collectionjava.lang.ClassCastException
- if data
is non-null
and is not an array of Java objects.