Servoy 2020 Documentation
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Refresh page Apr 20, 2024 08:33

Supported Clients
SmartClient WebClient NGClient

Methods Summary
JSTableObject createNewTable(tableName) Creates in this server a new table with the specified name.
Boolean dropTable(tableName) Drops the table with the specified name from this server.
JSTableObject getTable(tableName) Returns a JSTable instance corresponding to the table with the specified name from this server.
Array getTableNames() Returns an array with the names of all tables in this server.
Boolean isValid() Get valid state for the server.
void reloadDataModel() Reloads the datamodel from the database, if changed externally or via rawSQL plugin.
Boolean synchronizeWithDB(table) Synchronizes a JSTable instance with the database.

Methods Details

createNewTable(tableName)

 
Creates in this server a new table with the specified name.

Parameters

String tableName The name of the table to create.

Returns

JSTableObject JSTableObject created table.

Supported Clients

SmartClient,WebClient,NGClient

Sample

var server = plugins.maintenance.getServer("example_data");
if (server)
{
	var table = server.createNewTable("new_table");
	if (table) {
		var pk = table.createNewColumn("new_table_id", JSColumn.INTEGER, 0);
		pk.rowIdentifierType = JSColumn.PK_COLUMN;
		if (server.synchronizeWithDB(table))
			application.output("New table created in the database.");
		else
			application.output("New table not created in database.");
	}
	else application.output("New table not created at all.");
}

dropTable(tableName)

 
Drops the table with the specified name from this server.

Parameters

String tableName The name of the table to drop.

Returns

Boolean boolean success.

Supported Clients

SmartClient,WebClient,NGClient

Sample

var server = plugins.maintenance.getServer("example_data");
if (server) {
	var result = server.dropTable("new_table");
	if (result)
		application.output("Table dropped.");
	else
		application.output("Table not dropped.");
}

getTable(tableName)

 
Returns a JSTable instance corresponding to the table with the specified name from this server.

Parameters

String tableName The name of the table to retrieve.

Returns

JSTableObject JSTableObject table.

Supported Clients

SmartClient,WebClient,NGClient

Sample

var server = plugins.maintenance.getServer("example_data");
if (server) {
	var table = server.getTable("employees");
	if (table) {
		var colNames = table.getColumnNames()
		application.output("Table has " + colNames.length + " columns.");
		for (var i=0; i<colNames.length; i++)
			application.output("Column " + i + ": " + colNames[i]);
	}
}

getTableNames()

 
Returns an array with the names of all tables in this server.

Returns

Array Array of String table names.

Supported Clients

SmartClient,WebClient,NGClient

Sample

var server = plugins.maintenance.getServer("example_data");
if (server) {
	var tableNames = server.getTableNames();
	application.output("There are " + tableNames.length + " tables.");
	for (var i=0; i<tableNames.length; i++)
		application.output("Table " + i + ": " + tableNames[i]);
}
else {
	plugins.dialogs.showInfoDialog("Attention","Server 'example_data' cannot be found.","OK");
}

isValid()

 
Get valid state for the server.

Returns

Boolean boolean valid state.

Supported Clients

SmartClient,WebClient,NGClient

Sample

var server = plugins.maintenance.getServer("example_data");
if (!server.isValid()) {
	application.output("Server not valid!");
}

reloadDataModel()

 
Reloads the datamodel from the database, if changed externally or via rawSQL plugin.

This call is not needed after a call to synchronizeWithDB().

Supported Clients

SmartClient,WebClient,NGClient

Sample

var server = plugins.maintenance.getServer("example_data");
var result = plugins.rawSQL.executeSQL("example_data", null, 'CREATE TABLE raw_table (raw_table_id INTEGER)');
if (result) {
	application.output("Table created through rawSQL plugin.");
	if (server) {
		server.reloadDataModel();
		// All existing JSTableObject/JSColumn object references are invalid now! Use getTable to get new ones.
		var table = server.getTable("raw_table");
		if (table) {
			var colNames = table.getColumnNames()
			application.output("Table has " + colNames.length + " columns.");
			for (var i=0; i<colNames.length; i++)
				application.output("Column " + i + ": " + colNames[i]);
		}
	}
}
else {
	application.output("Raw table creation failed: " + plugins.rawSQL.getException());
}

synchronizeWithDB(table)

 
Synchronizes a JSTable instance with the database. If columns were added to or removed from the JSTable instance, all these changes will now be persisted to the database.

Parameters

JSTableObject table A JSTableObject instance that should be synchronized.

Returns

Boolean boolean success.

Supported Clients

SmartClient,WebClient,NGClient

Sample

var server = plugins.maintenance.getServer("example_data");
if (server)
{
	var table = server.createNewTable("new_table");
	if (table) {
		var pk = table.createNewColumn("new_table_id", JSColumn.INTEGER, 0);
		pk.rowIdentifierType = JSColumn.PK_COLUMN;
		if (server.synchronizeWithDB(table))
			application.output("New table created in the database.");
		else
			application.output("New table not created in database.");
	}
	else application.output("New table not created at all.");
}

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