Table class. More...

#include <ilviews/dataccess/memtable.h>

Inheritance diagram for IliMemoryTable:

Public Member Functions
	IliMemoryTable (IlvDisplay *display)
	Constructor. More...

	IliMemoryTable (IlvDisplay display, IlInt rowCnt, const char const values, IlInt colCnt=1, const char const *headers=0)
	Constructor from a description. More...

	IliMemoryTable (const IliMemoryTable &tbl)
	Copy constructor. More...

virtual IlBoolean	allowColumnMove () const
	Returns `IlTrue` if columns can be moved to this schema. More...

virtual IlBoolean	allowRowMove () const
	Returns `IlTrue` if the table (or subclass of the table) allows row move operations. More...

virtual void	clearRows ()
	Deletes all rows. More...

virtual IlBoolean	deleteRow (IlInt r)
	Deletes a row. More...

virtual IlBoolean	deleteRowInCache (IlInt rowno)
	Deletes a row. More...

virtual IlBoolean	exchangeRows (IlInt rowno1, IlInt rowno2)
	Exchanges two rows. More...

virtual IlBoolean	exchangeRowsInCache (IlInt rowno1, IlInt rowno2)
	Exchanges two rows. More...

virtual IlInt	getRowsCount () const
	Returns the number of rows in the table. More...

virtual IliRowStatus	getRowStatus (IlInt rowno) const
	Returns the status of one row. More...

virtual IlBoolean	getValue (IlInt r, IlInt c, IliValue &) const
	Returns a value. More...

virtual IlBoolean	insertRow (IlInt r, IliTableBuffer *)
	Inserts a row that is defined by the table buffer. More...

virtual IlBoolean	insertRowInCache (IlInt rowno, IliTableBuffer *)
	Inserts a row that is defined by the table buffer. More...

virtual IlBoolean	moveRow (IlInt from, IlInt to)
	Moves a row. More...

virtual IlBoolean	moveRowInCache (IlInt from, IlInt to)
	Moves a row. More...

virtual void	setColumnMaxLength (IlInt, IlInt)
	Sets the maximum length for one column. More...

virtual void	setColumnNullable (IlInt, IlBoolean)
	Determines if the column positioned at `colno` is `nullable` (that is, may contain null values). More...

virtual void	setColumnType (IlInt, const IliDatatype *)
	Sets the type of the column. More...

virtual IlBoolean	updateRow (IlInt r, IliTableBuffer *)
	Updates a row with the values in the table buffer. More...

virtual IlBoolean	updateRowInCache (IlInt rowno, IliTableBuffer *)
	Updates a row. More...

virtual void	write (IL_STDPREF ostream &output) const
	Writes to output stream. More...

Public Member Functions inherited from IliTable
void	addErrorSink (IliErrorSink *sink)
	Adds an error sink. More...

IlInt	appendParameter (const char paramName, const IliDatatype type, IlInt maxlen=-1)
	Appends a new parameter to the table parameters. More...

IlInt	appendRow (IliTableBuffer *tblBuf)
	Appends a new row defined by the table buffer. More...

IlInt	appendRowInCache (IliTableBuffer *tblBuf)
	Appends a new row defined by the table buffer. More...

virtual IlBoolean	applyQueryMode (IliTable *queryTable)
	Applies the query specified by the conditions contained in the provided table. More...

IliValue	at (IlInt rowno, IlInt colno) const
	Returns a value. More...

IliValue	at (IlInt rowno, IliName colname) const
	Returns a value. More...

virtual IlBoolean	checkConstraints (IlInt rowno, IliTableBuffer *buff) const
	Validates the table buffer data. More...

IliTable *	copyTable () const
	Returns a copy of the table. More...

void	deleteParameter (IlInt paramno)
	Deletes a parameter. More...

void	enableColumnCompletion (IlInt colno, IlBoolean flag)
	Specifies whether completion is enabled for the column. More...

virtual IlInt	fetchAll ()
	Fetches all remaining rows and stores them in the local row cache. More...

virtual IlBoolean	fetchCompleted () const
	Returns `IlTrue`, if all the rows have been fetched from the database and stored in the local row cache. More...

virtual IlInt	fetchNext (IlInt count=1)
	Fetches up a number of rows from the database and stores them in the local row cache. More...

IlInt	findFirstRow (const IliValue &value, IlInt colno, IlBoolean complete, IlInt fromRow=0, IlInt toRow=-1) const
	Searches for a row located between two positions. More...

IlInt	findRow (const IliValue &value, IlInt colno, IlBoolean complete, IlInt fromRow=0, IlInt toRow=-1) const
	Searches for a row located between two positions. More...

IliTableBuffer *	getBuffer ()
	Returns a table buffer for the table. More...

IlBoolean	getColumnDisplayValue (IlInt colno, const IliValue &value, IliValue &displayValue, IlvGraphicHolder *h=NULL)
	Returns the display value for a value. More...

IliTable *	getColumnEffectiveForeignTable (IlInt colno, IlvGraphicHolder *h=NULL) const
	Returns the effective foreign table. More...

const char *	getColumnForeignDataSourceName (IlInt colno) const
	Returns the name of the data source that will provide a foreign table for one column. More...

const char *	getColumnForeignDisplayColumn (IlInt colno) const
	Returns the name of the display column in the foreign table. More...

IliTable *	getColumnForeignTable (IlInt colno) const
	Returns the foreign table of one column. More...

const char *	getColumnForeignValueColumn (IlInt colno) const
	Returns the name of the value column in the foreign table. More...

IlAny	getCompareData () const
	Returns the user data that can be used to compare two rows. More...

IliCompareFunction	getCompareFunction () const
	Returns the function that is used to compare two rows. More...

const IliTablePropertyManager *	getDefaultPropertyManager () const
	Returns the default property manager. More...

IliTablePropertyManager *	getDefaultPropertyManager ()
	Returns the default property manager. More...

IlvGadgetHolder *	getGadgetHolder () const
	Returns the gadget holder to which the table is attached. More...

IliTablePropertyManager *	getNamedPropertyManager (const char *name) const
	Returns a property manager from its name. More...

IlInt	getNamedPropertyManagerCount () const
	Returns the number of named property managers. More...

const char *	getParameterColumnName (IlInt paramno) const
	Returns the name of the column, which the parameter is attached to. More...

const char *	getParameterDataSourceName (IlInt paramno) const
	Returns the name of the data source which the parameter is attached to. More...

IliValue	getParameterDataSourceValue (IlInt paramno) const
	Returns the current value of one parameter. More...

IlInt	getParameterIndex (const char *name) const
	Returns the position of one parameter. More...

IlInt	getParameterMaxLength (IlInt paramno) const
	Returns the maximum length allowed for one parameter. More...

const char *	getParameterName (IlInt paramno) const
	Returns a parameter name. More...

IlInt	getParametersCount () const
	Returns the number of parameters defined for this table. More...

const IliDatatype *	getParameterType (IlInt paramno) const
	Returns the parameter type. More...

IliValue	getParameterValue (IlInt paramno) const
	Returns the current value of one parameter. More...

IliValue	getParameterValue (IliName paramName) const
	Returns the current value of one parameter. More...

IlBoolean	getProperty (IlInt rowno, IlInt colno, const IlvSymbol *propName, IliValue &propVal) const
	Returns a property value attached to the part of the table. More...

IlInt	getPropertyCount (IlInt rowno, IlInt colno) const
	Returns the property count attached to the part of the table. More...

const char *	getPropertyManagerNameAt (IlInt idx) const
	Returns the name of the named property manager. More...

const IlvSymbol *	getPropertyNameAt (IlInt rowno, IlInt colno, IlInt propIndex) const
	Returns a property name attached to the part of the table. More...

IliRowPtr	getRowPtr (IlInt rowno=-1) const
	Returns an `IliRowPtr` that points to one row. More...

IliTransactionManager *	getTransactionManager () const
	Returns the transaction manager managing the table. More...

const char *	getTransactionManagerName () const
	Returns the name of the transaction manager that manages the table. More...

virtual IlBoolean	insertRowsFrom (const IliTable *src, IlInt srcFromRow=0, IlInt srcToRow=-1, IlBoolean stopAtFirstError=IlTrue, IlInt insertAt=-1)
	Inserts rows into this table by copying them from another table. More...

IlBoolean	isColumnCompletionEnabled (IlInt colno) const
	Returns `IlTrue` if completion is enabled for the column. More...

IlBoolean	isColumnValueConstrained (IlInt colno) const
	Returns `IlTrue` if the column is constrained to taking its values from the domain of the value column of the foreign table. More...

IlBoolean	isModified () const
	Returns `IlTrue` if the rows of the table have been modified since the last time. More...

virtual IlBoolean	isQueryModeSupported () const
	Returns `IlTrue` if the table supports query mode. More...

virtual IlBoolean	isSelectDone () const
	Returns `IlTrue` if the `select` member function has been called since the object was constructed. More...

virtual IliTable *	makeQueryTable () const
	Returns a memory table having the same number of columns as this table. More...

IliTablePropertyManager *	newNamedPropertyManager (const char *name)
	Creates and returns a new named property manager. More...

virtual IliTablePropertyManager *	newPropertyManager ()
	Creates and returns a new anonymous property manager. More...

virtual IlBoolean	refreshAndLockRow (IlInt rowno)
	Refreshes and lock a row. More...

virtual IlBoolean	refreshRow (IlInt rowno)
	Refreshes a row. More...

void	releaseBuffer (IliTableBuffer *buff)
	Releases a table buffer. More...

void	removeErrorSink (IliErrorSink *sink)
	Removes an error sink from this table. More...

void	removeNamedPropertyManager (const char *name)
	Removes a property manager. More...

void	removeProperty (IlInt rowno, IlInt colno, const IlvSymbol *propName)
	Removes a property from the part of the table. More...

virtual IlBoolean	select ()
	Reads all rows from a remote database. More...

IlBoolean	set (IlInt rowno, IlInt colno, const IliValue &value)
	Sets a value. More...

IlBoolean	set (IlInt rowno, IliName colname, const IliValue &value)
	Sets a value. More...

void	setColumnForeignDataSourceName (IlInt colno, const char *dsname)
	Sets the name of the foreign data source for one column. More...

void	setColumnForeignDisplayColumn (IlInt colno, const char *name)
	Sets the name of the display column in the foreign table. More...

void	setColumnForeignTable (IlInt colno, IliTable *table)
	Sets the foreign table of one column. More...

void	setColumnForeignValueColumn (IlInt colno, const char *name)
	Sets the name of the value column in the foreign table. More...

void	setColumnValueConstrained (IlInt colno, IlBoolean flag)
	Specifies that the column is constrained to take its values from the domain of the value column of the foreign table. More...

void	setCompareFunction (IliCompareFunction fct, IlAny arg=0)
	Defines the function and user data that must be used to compare two rows. More...

void	setGadgetHolder (IlvGadgetHolder *gadHold)
	Attaches the table to a gadget holder. More...

IlBoolean	setInCache (IlInt rowno, IlInt colno, const IliValue &value)
	Sets a value. More...

virtual void	setModified (IlBoolean flag)
	Sets the value of the modified property of the table. More...

void	setParameterColumnName (IlInt paramno, const char *colname)
	Attaches a parameter to one column. More...

void	setParameterDataSourceName (IlInt paramno, const char *dsname)
	Attaches one parameter to one data source. More...

void	setParameterMaxLength (IlInt paramno, IlInt maxlen)
	Sets the maximum length allowed for the parameter. More...

void	setParameterName (IlInt paramno, const char *name)
	Sets a parameter name. More...

void	setParameterType (IlInt paramno, const IliDatatype *type)
	Sets the type of one parameter. More...

void	setParameterValue (IlInt paramno, const IliValue &value)
	Sets the value of one parameter. More...

void	setParameterValue (IliName paramName, const IliValue &value)
	Sets the value of one parameter. More...

void	setProperty (IlInt rowno, IlInt colno, const IlvSymbol *propName, const IliValue &propVal)
	Sets a property value to a part of the table. More...

void	setTransactionManager (IliTransactionManager *tm)
	Changes the transaction that manages this table. More...

void	setTransactionManagerName (const char *name)
	Changes the transaction that manages this table. More...

void	sortRows (const IlInt *colnoArray, IlInt columnsCount, IlInt fromRow=0, IlInt toRow=-1, IliCompareFunction fct=0, IlAny data=0)
	Sorts a set of rows. More...

void	writeTable (IL_STDPREF ostream &output) const
	Writes the definition of the table to an output stream, in a form suitable to be read back by the `ReadTable` static member function. More...

Public Member Functions inherited from IliSchema
	IliSchema (IlvDisplay *display)
	This constructor initializes a schema object. More...

	IliSchema (const IliSchema &)
	This is the copy constructor of the `IliSchema` class.

	IliSchema (IlvDisplay *display, IL_STDPREF istream &input)
	This constructor initializes a schema by reading its definition from an input stream. More...

void	addHook (IliTableHook *hook)
	Adds a hook to the list of hooks of the schema object. More...

IlInt	appendColumn (const char name, const IliDatatype type, IlInt maxlen=-1)
	Appends a new column to the schema. More...

const IliDatatype *	asDatatype () const
	Returns the data type that is defined by this schema. More...

virtual IlBoolean	deleteColumn (IlInt colno)
	Deletes a column. More...

void	endOfBatch ()
	Used in conjunction with the `startOfBatch` member function to terminate a series of modifications on the schema. More...

IlvAlignment	getColumnAlignment (IlInt colno) const
	Returns the column alignment. More...

const char *	getColumnDefault (IlInt colno) const
	Returns the default value for one column. More...

IlInt	getColumnDisplayWidth (IlInt colno) const
	Returns the display width, in pixels, of one column. More...

const IliFormat &	getColumnFormat (IlInt colno) const
	Returns the format of one column. More...

IlInt	getColumnIndex (const char *name) const
	Returns the position of the column. More...

IlInt	getColumnIndex (IlInt token) const
	Returns the position of the column. More...

const char *	getColumnLabel (IlInt colno) const
	Returns the label of one column. More...

const IliInputMask &	getColumnMask (IlInt colno) const
	Returns the input mask of one column. More...

IlInt	getColumnMaxLength (IlInt colno) const
	Returns the maximum length allowed for one column. More...

const char *	getColumnName (IlInt colno) const
	Returns the name of the column. More...

IlInt	getColumnsCount () const
	Returns the number of columns in the schema. More...

const char *	getColumnTitle (IlInt colno) const
	Returns the title of one column. More...

IlInt	getColumnToken (IlInt colno) const
	Returns the token of the column. More...

const IliDatatype *	getColumnType (IlInt colno) const
	Returns the type of the column. More...

IlvDisplay *	getDisplay () const
	Returns the display of the schema object. More...

const char *	getElementTypeName () const
	Returns the type name of the objects in the collection. More...

const IliSchema *	getNestedSchema (const IliAttributePath &path) const
	Returns the nested schema. More...

IliSchema *	getNestedSchema (const IliAttributePath &path)
	Returns the nested schema. More...

const char *	getSchemaName () const
	Returns the schema name. More...

IlBoolean	hasHook (IliTableHook *hook) const
	Returns True if the hook is already into the list of hooks of the schema object. More...

virtual IlBoolean	insertColumn (IlInt colno, const char colname, const IliDatatype type, IlInt maxlen=-1)
	Inserts a new column in the schema. More...

IlBoolean	isACollection () const
	Returns `IlTrue` if the schema defines a type that is a collection of objects or values. More...

IlBoolean	isASimpleCollection () const
	Returns `IlTrue` if the schema is defined as a simple collection type. More...

IlBoolean	isColumnNullable (IlInt colno) const
	Returns `IlTrue` if the column allows null values. More...

IlBoolean	isColumnPartOfKey (IlInt colno) const
	Returns `IlTrue` if the column is part of the primary key of the schema. More...

IlBoolean	isColumnReadOnly (IlInt colno) const
	Returns `IlTrue` if the column is read-only. More...

IlBoolean	isColumnVisible (IlInt colno) const
	Returns `IlTrue` if the column should be visible. More...

IlBoolean	isPrimaryKeyDefined () const
	Returns `IlTrue` if the schema has one or more columns defined as being part of the primary key. More...

virtual IlBoolean	moveColumn (IlInt from, IlInt to)
	Moves a column. More...

void	removeHook (IliTableHook *hook)
	Removes a hook from the list of hooks of the schema object. More...

void	setAsCollection (IlBoolean flag)
	Sets the schema as a collection type. More...

void	setAsSimpleCollection (IlBoolean flag)
	Sets the schema as a simple collection type. More...

virtual void	setColumnAlignment (IlInt colno, IlvAlignment align)
	Sets the alignment of one column. More...

virtual void	setColumnDefault (IlInt colno, const char *val)
	Sets the default value for one column. More...

virtual void	setColumnDisplayWidth (IlInt colno, IlInt width)
	Sets the display width of one column. More...

virtual void	setColumnFormat (IlInt colno, const IliFormat &fmt)
	Sets the format of the column. More...

virtual void	setColumnLabel (IlInt colno, const char *label)
	Sets the label of one column. More...

virtual void	setColumnMask (IlInt colno, const IliInputMask &mask)
	Sets the input mask of one column. More...

virtual void	setColumnName (IlInt colno, const char *colname)
	Sets the name of the column. More...

virtual void	setColumnPartOfKey (IlInt colno, IlBoolean partOfKey)
	Specifies whether the column is part of the primary key. More...

virtual void	setColumnReadOnly (IlInt colno, IlBoolean readOnly)
	Specifies whether a column is read-only. More...

virtual void	setColumnTitle (IlInt colno, const char *title)
	Sets the title of one column. More...

virtual void	setColumnVisible (IlInt colno, IlBoolean visible)
	Sets the column visibility. More...

void	setElementTypeName (const char *name)
	Sets the element type name. More...

void	setSchemaName (const char *name)
	Sets the schema name. More...

void	startOfBatch ()
	Used to start a series of modifications on the schema object. More...

Public Member Functions inherited from IliRefCounted
IlInt	getRefCount () const
	Returns the reference count of the object. Initially, this property is set to `0`. More...

void	lock () const
	Increments the reference count of the object.

void	unLock () const
	Decrements the reference count of the object. More...

Additional Inherited Members
Static Public Member Functions inherited from IliTable
static IliTable *	ReadTable (IlvDisplay *disp, IL_STDPREF istream &input)
	Constructs and returns an instance of a subclass of `IliTable` by reading its definition from an input stream. More...

Protected Member Functions inherited from IliTable
virtual void	cellChanged (IlInt rowno, IlInt colno)
	Called just after a cell has changed. More...

virtual void	raiseError (const IliErrorMessage &msg) const
	Called each time an error occurs. More...

virtual void	rowChanged (IlInt rowno)
	Called just after the row at position `rowno` has changed (that is, when one or more values in the row have changed). More...

virtual void	rowDeleted (IlInt rowno)
	Called just after a row has been removed from the table. More...

virtual void	rowFetched (IlInt rowno)
	Called just after a new row has been fetched from a remote database and inserted. More...

virtual void	rowInserted (IlInt rowno)
	Called just after a new row has been inserted. More...

virtual void	rowMoved (IlInt src, IlInt dest)
	Called just after a row has moved. More...

virtual void	rowToBeChanged (IlInt rowno)
	Called just before the row is changed. More...

virtual void	rowToBeDeleted (IlInt rowno)
	Called just before a row is removed from the table. More...

virtual void	tableChanged ()
	Called when the `IliTable` object has undergone a significant number of changes. More...

Detailed Description

Table class.

Library: dataccess

The IliMemoryTable class implements the protocol defined by the IliTable class, by managing all the memory necessary to store the rows. Since it can handle any set of columns (schema), it may be used as a general purpose table implementation. It is also used as a base class for other more specialized classes such as IliSQLTable. This class manages rows on a remote database system, and caches parts of these rows locally. In this situation, the IliMemoryTable base class provides the cache capability.

See Also: Classes: IliTable, IliStringType

Constructor & Destructor Documentation

IliMemoryTable::IliMemoryTable ( IlvDisplay * display )

Constructor.

This constructor initializes a memory table. Initially, this table has no columns and no rows.

Parameters

display The display.

IliMemoryTable::IliMemoryTable	(	IlvDisplay *	display,
		IlInt	rowCnt,
		const char const	values,
		IlInt	colCnt = `1`,
		const char const	headers = `0`
	)

Constructor from a description.

This constructor creates a memory table with columnsCount columns and rowsCount rows. All columns are of the IliStringType and their names are given by the columnsNames array. The row cells take their initial values from the values array, which must be of size columnsCount x rowsCount. If the columnNames parameter is null, then the columns will be given names in the set {"Column 1", "Column 2", ...}. Note that this constructor does not keep any pointers to the character strings and arrays of character strings that it is given.

Parameters

display	The display.
rowCnt	The row count.
values	The values.
colCnt	The column count.
headers	The columns name.

IliMemoryTable::IliMemoryTable ( const IliMemoryTable & tbl )

Copy constructor.

This is the copy constructor of the IliMemoryTable class.

Parameters

tbl	The table.

Member Function Documentation

virtual IlBoolean IliMemoryTable::allowColumnMove ( ) const

virtual

Returns IlTrue if columns can be moved to this schema.

The reason why columns can or cannot be moved depends on the specific subclass of IliSchema that is used.

Returns: IlTrue if columns can be moved to this schema, and IlFalse otherwise.

Reimplemented from IliSchema.

Reimplemented in IliSQLTable.

virtual IlBoolean IliMemoryTable::allowRowMove ( ) const

virtual

Returns IlTrue if the table (or subclass of the table) allows row move operations.

Returns: IlTrue if the table (or subclass of the table) allows row move operations.

Reimplemented from IliTable.

virtual void IliMemoryTable::clearRows ( )

virtual

Deletes all rows.

If the table (or subclass of the table) defines a mapping with a remote database, then only the rows in the IliTable object are deleted. The rows in the remote database are not affected by this operation. This enables the row cache of such a table to be cleared.

Reimplemented from IliTable.

Reimplemented in IliSQLTable.

virtual IlBoolean IliMemoryTable::deleteRow ( IlInt rowno )

virtual

Deletes a row.

Parameters

rowno The row position.

Returns: IlTrue if successful and IlFalse if rowno is out of bounds, or if the row could not be deleted. If the table (or subclass of the table) defines a mapping with a remote database, the row is also deleted in the remote database.

Reimplemented from IliTable.

Reimplemented in IliSQLTable.

virtual IlBoolean IliMemoryTable::deleteRowInCache ( IlInt rowno )

virtual

Deletes a row.

This virtual member function is similar to the deleteRow member function except that it only deletes the row in the local row cache if this table is a two-tier table.

Parameters

rowno The row position.

Returns: IlTrue if successful and IlFalse if rowno is out of bounds, or if the row could not be deleted. If the table (or subclass of the table) defines a mapping with a remote database, the row is also deleted in the remote database.

Reimplemented from IliTable.

virtual IlBoolean IliMemoryTable::exchangeRows	(	IlInt	rowno1,
		IlInt	rowno2
	)

virtual

Exchanges two rows.

Parameters

rowno1	The first row position.
rowno2	The second row position.

Returns: IlTrue if successful. If the table (or subclass of the table) defines a mapping with a remote database, the rows are also exchanged in the remote database (if possible).

Reimplemented from IliTable.

Reimplemented in IliSQLTable.

virtual IlBoolean IliMemoryTable::exchangeRowsInCache	(	IlInt	rowno1,
		IlInt	rowno2
	)

virtual

Exchanges two rows.

This virtual member function is similar to the exchangeRows member function except that it exchanges only the rows in the local row cache.

Parameters

rowno1	The first row position.
rowno2	The second row position.

Returns: IlTrue if successful. If the table (or subclass of the table) defines a mapping with a remote database, the rows are also exchanged in the remote database (if possible).

Reimplemented from IliTable.

virtual IlInt IliMemoryTable::getRowsCount ( ) const

virtual

Returns the number of rows in the table.

Returns: The count.

Reimplemented from IliTable.

Reimplemented in IliSQLTable.

virtual IliRowStatus IliMemoryTable::getRowStatus ( IlInt rowno ) const

virtual

Returns the status of one row.

This is useful when a transaction manager manages the table. The row status can be one of the following:

IliNotARow The row index is out of bounds.
IliRegularRow The row has not been touched in the current local transaction.
IliInsertedRow The row has been inserted in the current local transaction.
IliUpdatedRow The row has been updated in the current local transaction.
IliDeletedRow The row has been deleted in the current local transaction.

The "current local transaction" refers to the changes that have occurred since the most recent call to one of the following member functions (assuming the transaction manager is currently started):

Note that the IliDeletedRow tag is never returned since a deleted row has no row index. This exists and is mentioned here for your information only.

Parameters

rowno The row position.

Returns: The status.

Reimplemented from IliTable.

virtual IlBoolean IliMemoryTable::getValue	(	IlInt	rowno,
		IlInt	colno,
		IliValue &	value
	)		const

virtual

Returns a value.

This member function handles the fetching of the row (and all preceding rows) as necessary.

Parameters

rowno	The row position.
colno	The column position.
value	The value.

Returns: IlTrue if successful.

Reimplemented from IliTable.

Reimplemented in IliSQLTable.

virtual IlBoolean IliMemoryTable::insertRow	(	IlInt	rowno,
		IliTableBuffer *	buff
	)

virtual

Inserts a row that is defined by the table buffer.

Not all the values are used to insert the row, instead the values for which the isModified are used, the others being replaced by null values. Note that this member function does not check any of the constraints defined in the schema. If the table (or subclass of the table) defines a mapping with a remote database, the row is also inserted in the remote database.

Parameters

rowno	The row position.
buff	The table buffer.

Returns: IlTrue if successful, and IlFalse if rowno is out of bounds, or if the row could not be inserted.

Reimplemented from IliTable.

Reimplemented in IliSQLTable.

virtual IlBoolean IliMemoryTable::insertRowInCache	(	IlInt	rowno,
		IliTableBuffer *	buff
	)

virtual

Inserts a row that is defined by the table buffer.

This virtual member function is similar to the insertRow member function except that it only inserts the row in the local row cache if this table is a two-tier table.

Parameters

rowno	The row position.
buff	The table buffer.

Returns: IlTrue if successful, and IlFalse if rowno is out of bounds, or if the row could not be inserted.

Reimplemented from IliTable.

virtual IlBoolean IliMemoryTable::moveRow	(	IlInt	from,
		IlInt	to
	)

virtual

Moves a row.

Parameters

from	The origin row position.
to	The destination row position.

Returns: IlTrue if successful. If the table (or subclass of the table) defines a mapping with a remote database, the row is also moved in the remote database (if possible).

Reimplemented from IliTable.

Reimplemented in IliSQLTable.

virtual IlBoolean IliMemoryTable::moveRowInCache	(	IlInt	from,
		IlInt	to
	)

virtual

Moves a row.

This virtual member function is similar to the moveRow member function except that it moves only the row in the local row cache.

Parameters

from	The origin row position.
to	The destination row position.

Returns: IlTrue if successful. If the table (or subclass of the table) defines a mapping with a remote database, the row is also moved in the remote database (if possible).

Reimplemented from IliTable.

virtual void IliMemoryTable::setColumnMaxLength	(	IlInt	colno,
		IlInt	maxlen
	)

virtual

Sets the maximum length for one column.

Parameters

colno	The column position.
maxlen	The maximum length.

Reimplemented from IliSchema.

virtual void IliMemoryTable::setColumnNullable	(	IlInt	colno,
		IlBoolean	nullable
	)

virtual

Determines if the column positioned at colno is nullable (that is, may contain null values).

Parameters

colno	The column position.
nullable	If `IlTrue`, the column is nullable.

Reimplemented from IliSchema.

virtual void IliMemoryTable::setColumnType	(	IlInt	colno,
		const IliDatatype *	type
	)

virtual

Sets the type of the column.

Parameters

colno	The column position.
type	The column type.

Reimplemented from IliSchema.

virtual IlBoolean IliMemoryTable::updateRow	(	IlInt	rowno,
		IliTableBuffer *	buff
	)

virtual

Updates a row with the values in the table buffer.

Not all the values are used to update the row. Instead the values for which the isModified member function returns IlTrue , are used. Note that this member function does not check any of the constraints defined in the schema. If the table (or subclass of the table) defines a mapping with a remote database, the row is also changed in the remote database.

Parameters

rowno	The row position.
buff	The table buffer.

Returns: IlTrue if successful and IlFalse if rowno is out of bounds, or if the row could not be updated.

Reimplemented from IliTable.

Reimplemented in IliSQLTable.

virtual IlBoolean IliMemoryTable::updateRowInCache	(	IlInt	rowno,
		IliTableBuffer *	buff
	)

virtual

Updates a row.

This virtual member function is similar to the updateRow member function except that it only updates the row in the local row cache if this table is a two-tier table.

Parameters

rowno	The row position.
buff	The table buffer.

Returns: IlTrue if successful and IlFalse if rowno is out of bounds, or if the row could not be updated.

Reimplemented from IliTable.

virtual void IliMemoryTable::write ( IL_STDPREF ostream & output ) const

virtual

Writes to output stream.

Writes a memory table to an output stream, in a form suitable to be able to be read back by the stream-based constructor.

Parameters

output The output stream.

Reimplemented from IliTable.

Reimplemented in IliSQLTable.

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Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

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Data Access Package API Reference Guide