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Class netscape.peas.TableSupport
java.lang.Object
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+----netscape.peas.RowSupport
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+----netscape.peas.TableSupport
- public class TableSupport
- extends RowSupport
- implements Table
Helper class for which provides simple implemenation of the Table interface.
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TableSupport(boolean)
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TableSupport(Table, boolean)
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addRow()
- add an empty row
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addRowValues(Object[], boolean)
- Add rows to this table, and notify listeners.
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addTableChangeListener(TableChangeListener)
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deleteRow()
- Delete the current row, and notify listeners.
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deleteRow(int, boolean)
- Delete the specified row from the table.
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doSetCurrentRowNumber(int, boolean, boolean, NotifyList)
- setCurrentRowNumber allows clients of this Table adjust
its "currentRowNumber" property.
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doUpdateRow(Object[], Object[], Object[])
- Helper to perform actual database update.
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executeQuery()
- Perform "generic" executeQuery functionality.
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fetchMoreRows()
- No default behavior yet, must be handled by Subclass/Delegator.
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fireTableChange(int, int, int, Object, TableProvider, NotifyList)
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getCurrentRowNumber()
- getCurrentRowNumber allows clients of this Table to get the
value of its its "currentRowNumber" property.
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getCurrentRowValues()
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getFetchBufferSize()
- Setter method for this cursor's "bufferSize" property.
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getInterface(String)
- Return an object which implements this specified (fully qualified) interface name.
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getNonCurrentRowValues(int)
- Return the values of this row
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getNumRowsFetched()
- Getter method for "NumRowsFetched" property.
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getQuery()
- Getter method for this cursor's "query" property.
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getRowsPending()
- Getter for the booelan "rowsPending" property.
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getTable()
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isCurrentRowChanged()
- Return true if current row has been changed
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isValidRowNumber(int)
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nextRow()
- Change the position of this cursor to the
next row.
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previousRow()
- Change the position of this cursor to the
next row.
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removeTableChangeListener(TableChangeListener)
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setColumnNames(String[], int[], NotifyList)
- This method sets this table's row's column info.
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setCurrentRowNumber(int)
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setFetchBufferSize(int)
- Getter method for this cursor's "bufferSize" property.
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setQuery(String)
- Setter method for this cursor's "query" property.
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setRowsPending(boolean)
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setTableValue(int, int, Object, NotifyList)
- Method to set this table's value at row# iRow and column# iColumn.
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setValueByNumber(int, Object, NotifyList)
- Override the RowSupport method so that we can notify TableChangeListeners using a TableChangeEvent.
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tableChange(TableChangeEvent)
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updateCurrentRow()
- Update (to underlying database) this table's current row
TableSupport
public TableSupport(boolean bOwnsDataContext)
TableSupport
public TableSupport(Table oDelegator,
boolean bOwnsDataContext)
getInterface
public Object getInterface(String sInterfaceName)
- Return an object which implements this specified (fully qualified) interface name.
If this interface is not implemented, return null.
- Overrides:
- getInterface in class RowSupport
getQuery
public String getQuery()
- Getter method for this cursor's "query" property.
setQuery
public void setQuery(String sNewQuery)
- Setter method for this cursor's "query" property.
getFetchBufferSize
public int getFetchBufferSize()
- Setter method for this cursor's "bufferSize" property.
this specifies the number of rows fetched when the query
is executed, and on successive fetchMoreRows() calls.
A buffer size of 0 means that all rows are fetched before
control is returned from executeQuery.
setFetchBufferSize
public void setFetchBufferSize(int iNewBufferSize)
- Getter method for this cursor's "bufferSize" property.
this specifies the number of rows fetched when the query
is executed, and on successive fetchMoreRows() calls.
executeQuery
public void executeQuery()
- Perform "generic" executeQuery functionality.
This entails initializing the table to be empty.
Subclasses or Delegators need to do their executeQuery stuff
before invoking this code.
deleteRow
public void deleteRow(int iRowNumber,
boolean bNotify)
- Delete the specified row from the table.
Notify listeners
client of table support should perform delete on database, and then delegate
to this implementation only if delete was successful.
deleteRow
public void deleteRow()
- Delete the current row, and notify listeners.
addRow
public void addRow()
- add an empty row
getNumRowsFetched
public int getNumRowsFetched()
- Getter method for "NumRowsFetched" property. This
is the total number of rows satisfying the query if
and only if the "rowsPending" property is true.
getRowsPending
public boolean getRowsPending()
- Getter for the booelan "rowsPending" property.
fetchMoreRows
public void fetchMoreRows()
- No default behavior yet, must be handled by Subclass/Delegator.
getCurrentRowNumber
public int getCurrentRowNumber()
- getCurrentRowNumber allows clients of this Table to get the
value of its its "currentRowNumber" property. It ought to be
exposed in the beaninfo as the "read" method for this property.
doSetCurrentRowNumber
public boolean doSetCurrentRowNumber(int iNewRowNumber,
boolean bNotify,
boolean bUpdateView,
NotifyList oNotifyList)
- setCurrentRowNumber allows clients of this Table adjust
its "currentRowNumber" property. It ought to be exposed in
the beaninfo as the "write" method for this property.
setCurrentRowNumber
public boolean setCurrentRowNumber(int iNewRowNumber)
nextRow
public boolean nextRow()
- Change the position of this cursor to the
next row. Return false if there is none.
previousRow
public boolean previousRow()
- Change the position of this cursor to the
next row. Return false if there is none.
doUpdateRow
public void doUpdateRow(Object aColumnNames[],
Object aNewValues[],
Object aOldValues[])
- Helper to perform actual database update. This, or updateCurrentRow can be overridden
to actually sen data to the database.
isCurrentRowChanged
public boolean isCurrentRowChanged()
- Return true if current row has been changed
updateCurrentRow
public void updateCurrentRow()
- Update (to underlying database) this table's current row
getTable
public Table getTable()
getCurrentRowValues
public RowProvider getCurrentRowValues()
addTableChangeListener
public void addTableChangeListener(TableChangeListener oListener)
removeTableChangeListener
public void removeTableChangeListener(TableChangeListener oListener)
fireTableChange
public void fireTableChange(int iChangeType,
int iRowAffected,
int iColumnAffected,
Object oNewValue,
TableProvider oTableProvider,
NotifyList oNotify)
getNonCurrentRowValues
public Object[] getNonCurrentRowValues(int iRowNumber)
- Return the values of this row
tableChange
public void tableChange(TableChangeEvent oEvent)
setTableValue
public void setTableValue(int iRow,
int iColumn,
Object oNewValue,
NotifyList oNotifyList)
- Method to set this table's value at row# iRow and column# iColumn.
setColumnNames
public void setColumnNames(String aColumnNames[],
int aColumnWidths[],
NotifyList oNotify)
- This method sets this table's row's column info. It gets called in the following cases:
A RowChangeEvent.COLUMN_INFO_CHANGED causes our superclass (RowSupport) to call this method to set column info
A TableChangeEvent.COLUMN_INFO_CHANGED causes us to call this method.
In both cases we first delegate to ROW_SUPPORT, which performs the actual change, and
also notifies its RowChangeListener s, and then notify our TableChangeListener s
- Overrides:
- setColumnNames in class RowSupport
setRowsPending
protected void setRowsPending(boolean bNewValue)
addRowValues
protected void addRowValues(Object aValues[],
boolean bNotifyListeners)
- Add rows to this table, and notify listeners.
Clients wishing to implement insert ought to
do insertAtEnd, then call this method to add values to this table
setValueByNumber
public void setValueByNumber(int iColumnNumber,
Object oNewValue,
NotifyList oNotifyList)
- Override the RowSupport method so that we can notify TableChangeListeners using a TableChangeEvent.
This gets called in various cases:
our "RowListener" interface gets notified of a rowChangeEvent.ROW_VALUE_CHANGED.
our "TableListenter" interface gets called on a TableChangeEvent.TABLE_VALUE_CHANGED
our Delegator's view gets changed by the user
our Delegator's model gets chagned by the user
We split this into two cases: current row and non-current row
- Overrides:
- setValueByNumber in class RowSupport
isValidRowNumber
public boolean isValidRowNumber(int iRowNumber)
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