WebT API

Prototype

WebtConnection(String hostAddr,
               int hostPort,
               [boolean doConnect,]
               [int conntimeout])

Parameter

Prototype

WebtConnection(String hostAddr,
               int hostPort,
               String backupAddr,
               int backupPort,
               [boolean doConnect,]
               [int conntimeout])

Parameter

Prototype

WebtConnection(String hostAddr,
               int hostPort,
               String username,
               String userpwd,
               String domainname,
               String domainpwd)

Parameter

Checks the connection state of a client.

Parameter

Closes the socket connection to Tmax. If the connection is managed by the connection pool, the connection can be returned to the pool without being disconnected to be used again.

Attempts to connect to Tmax.

Exception

Returns the address of the main Tmax server.

Returns the port number of the main Tmax server.

Returns the address of a backup Tmax server.

Returns the ID of a connection.

Returns the IP address of the current Tmax server.

Returns the port number of the current Tmax server.

Returns the name of a client connected to a main Tmax server.

Returns the name of a connection group that contains a connection.

Returns the port number of the main Tmax server.

Returns a specified blocking timeout value in seconds.

Returns the WebtTransaction object that a connection is currently using.

Returns the timeout value of the Commit and Rollback parameters of a current transaction.

Returns an account name for user security authentication of a main Tmax server.

Checks whether a connection is active.

Specifies a blocking timeout value in seconds.

Specifies a timeout value for the Commit and Rollback parameters of transactions. (unit: seconds)

Specifies a timeout value of a transaction. (unit: seconds)

Starts a message processing thread through a connection.

Terminates a message processing thread through a connection.

Prototype

public static void createGroup(String groupname,
                               String hostAddr,
                               int hostPort,
                               [String username,]
                               [String userpwd,]
                               [String domainname,]
                               [String domainpwd,]
                               int init,
                               int max,
                               int inc)

Parameter

Prototype

public static void createGroup(String groupname,
                               String hostAddr,
                               int hostPort,
                               String backupAddr,
                               int backupPort,
                               [String username,]
                               [String userpwd,]
                               [String domainname,]
                               [String domainpwd,]
                               int init,
                               int max,
                               int inc,
                               [int idle])

Parameter

Deletes all connection groups.

Removes a connection group that has the same group name as a name parameter. All connections in the connection group will be closed. The index number of a connection group that is larger than that of a removed connection group will be reduced by 1.

Parameter

Keeps a connection.

Returns the connections in a connection group that have the same group name as the groupname parameter. If the connection is not obtained within a specified timeout period, a WebtException will occur.

Parameter

Exception

Returns connections in the connection group that has the same name with the groupname parameter. If failed to get a connection within the timeout period specified at timeout_mili, WebtException will occur.

Parameter

Exception

Returns a connection group that has the same name as the groupname parameter. If there is no matched connection group, NULL is returned.

Parameter

Creates a thread to monitor a connection pool. If both checkAlive and checkIdle are set to FALSE, no thread will be created.

Parameter

Stops monitoring a connection pool, and terminates the monitoring thread.

Returns the number of currently remaining connections in a connection pool.

Deletes the current connection pool.

Waits to get a connection for a specified timeout period, and then returns an obtained connection. (Default value: 20 seconds)

Exception

Waits to get a connection for the specified timeout period, and then returns an obtained connection. (Default value: 20 seconds)

Parameter

Exception

Returns information about a connection pool.

Returns the name of a connection pool.

Checks if the current connection pool is active.

Returns the number of connections managed by the current pool.

Prototype

public WebtAttribute()

Prototype

public WebtAttribute(int flag)

Parameter

Calls the WebtRemoteService.tpacall method.

By setting a TPBLOCK, it is possible to receive a response containing information about an error of a service or a server. If a TPBLOCK is set, and a call for a WebtRemoteService.tpacall method fails, a WebtServiceException or WebtIOException will be thrown.

Calls the WebtRQService.tpenq method or the WebtRQService.tpdeq method. TPFUNC is used to manage RQ data for each service.

Calls the WebtRemoteService.tpgetrply method.

If TPGETANY is set, and a WebtBuffer which corresponds to an identifier(cd) has not been received when a WebtRemoteService.tpgetrply method is called, the identifier that was passed as a parameter of tpgetrply will be ignored, and a previously received WebtBuffer will be returned.

Mainly used for the WebtRemoteService.tpgetrply() method.

If TPNOBLOCK is set, and the network is blocked when calling the TP method, WebtServiceException(tperrno=TPETIME) will be thrown.

Used to call the tpcall and tpgetrply methods of a WebtRemoteService.

If TPNOCHANGE is set, and the receive buffer type specified when calling a tpcall method or a tpgetrply method does not match the received WebtBuffer type, a WebtServiceException(tperrno=TPEOTYPE) will be thrown.

Indicates that no attribute has been set.

Setting TPNOREPLY allows a request to be sent without expecting a response. When TPNOREPLY is set and the WebtRemoteService.tpacall method completes successfully, an identifier value of 0 is returned. This identifier cannot be used with the WebtRemoteService.tpgetrply method.

If a WebtRemoteService.tpacall method is in a transaction state, it is impossible to use a TPNOREPLY because a response is required. To use a TPNOREPLY in such a state, it must be used with a TPNOTRAN in order to be excluded from the transaction boundary.

If a TPNOTIME is set, a BLOCKTIME value specified in a Tmax server configuration file or the blocking timeout value specified by a WebtConnection.setTPtimeout(int) method will be ignored, and they will be set to 'infinite', which means they will wait infinitely for a response.

By setting a TPNOTIME for a tpcall, tpacall, or tpgetrply method in a transaction boundary, a transaction timeout will be applied, and a TPNOTIME will be ignored.

Used for the tpcall and tpacall methods of a WebtRemoteService. Even though the methods are included in a transaction boundary by WebtTransaction, if a TPNOTRAN is set, they can be excluded from the boundary.

Sets a user method in Java gateways.

Calls the WebtRQService.tpenq method or the WebtRQService.tpdeq method.

Setting a TPRQS means that when using a RQ service, data will be recorded in the request queue and received from the reply queue.

Clears all attributes.

Copies a WebtAttribute object.

Examines whether a specific attribute is set. If all attributes specified in a attr parameter are set, a TRUE value will be returned, otherwise a FALSE value will be returned.

Parameter

Returns the string value of an object.

Checks if TPBLOCK is set.

Checks if TPFUNC is set.

Checks if TPGETANY is set.

Checks if TPNOBLOCK is set.

Checks if TPNOCHANGE is set.

Cheks if TPNOREPLY is set.

Cheks if TPNOTIME is set.

Checks if TPNOTRAN is set.

Checks if TPRQS is set.

Sets or releases TPBLOCK.

Parameter

Sets or releases TPFUNC.

Parameter

Sets or cancels a TPGETANY.

Parameter

Sets or cancels TPNOBLOCK.

Parameter

Sets or releases TPNOCHANGE.

Parameter

Sets or releases TPNOREPLY.

Parameter

Sets or releases TPNOTIME.

Parameter

Sets or releases TPNOTRAN.

Parameter

Sets or releases TPRETRY.

Parameter

Sets or releases TPRQS.

Parameter

CARRAY buffer type. Used when a return value of a getBufferType() method is BT_CARRAY.

FIELD buffer type. Used when a return value of a getBufferType method is BT_FIELD.

STRING buffer type. Used when a return value of a getBufferType method is BT_STRING.

Creates a WebtBuffer object with the BT_CARRAY buffer type.

The character set used is the return value of the WebtSystem.getDefaultCharset method.

Creates a WebtBuffer object with the BT_CARRAY buffer type.

The character set used is the return value of the WebtSystem.getDefaultCharset method.

Creates a WebtBuffer object with the BT_FIELD buffer type.

The character set used is the return value of the WebtSystem.getDefaultCharset method.

Creates a WebtBuffer object with the BT_FIELD buffer type.

The character set used is the return value of the WebtSystem.getDefaultCharset method.

Creates a WebtBuffer object with the BT_STRING buffer type.

The character set used is the return value of the WebtSystem.getDefaultCharset method.

Creates a WebtBuffer object with the BT_STRING buffer type.

The character set used is the return value of the WebtSystem.getDefaultCharset method.

Returns a string that corresponds to the buffer type.

Returns the buffer type.

Returns the call descriptor of the WebtBuffer. A call descriptor is the value returned by the WebtRemoteService.tpacall() method and is used as a parameter for the tpgetrply() method. A value greater than or equal to 0 indicates a valid descriptor.

Returns the length of the data when converted to a byte stream.

Returns the default character set to be used by a buffer. If NULL is returned, the system default system character set will be used.

Returns the currently specified service name.

If the buffer type is BT_STRING or BT_CARRAY, the content from the beginning of the data up to (but not including) the first 0x00 byte is converted to a string and returned. If no 0x00 byte is found in the data, the entire byte array is converted.

Exception

Returns a value that was specified as urcode when a tpreturn method was executed in a Tmax service routine.

Specifies a character set to be used in a buffer. To apply the character set, it must be specified before starting the buffer. If not specified, the return value of a WebtRemoteService.getDefaultCharset method will be used.

Sets data to request a service from Tmax.

This method can be used only when the buffer type is a BT_STRING or BT_CARRAY. Otherwise, a WebtBufferException (tperrno = TPEINVAL) will be thrown. 0x00 will be added to the end of the data converted into a byte array. For character set conversion, the return value of the getDefaultCharacterSet method is used.

Parameter

Exception

Prototype

WebtCarrayBuffer()

Prototype

WebtStringBuffer()

Deletes all internal WebtField objects.

Returns all data from the beginning to the end, when the buffer type is BT_CARRAY or BT_STRING. Functions the same as getBytes(false).

Exception

Returns all data from the beginning to the end, when the buffer type is BT_CARRAY.

Parameter

Exception

If the buffer type is set to either BT_STRING or BT_CARRAY, the data starting from the position specified by the offset parameter and spanning the length specified by the length parameter will be returned as a byte array.

Parameter

Exception

If the buffer type is set to either BT_STRING or BT_CARRAY, the data starting from the position specified by the offset parameter and spanning the length specified by the length parameter will be returned as a string.

Parameter

Exception

If the buffer type is BT_STRING or BT_CARRAY, the content from the beginning of the data up to (but not including) the first 0x00 byte is converted to a string and returned. If no 0x00 byte is found in the data, the entire byte array is converted.

Parameter

Exception

Sets data to request a service from Tmax.

Can be used only when the buffer type is BT_CARRAY. Otherwise, a WebtBufferException(tperrno = TPEINVAL) will be thrown.

Parameter

Exception

Sets data to request a service from Tmax.

Can be used only when the buffer type is BT_CARRAY. Otherwise, a WebtBufferException(tperrno = TPEINVAL) will be thrown.

Parameter

Exception

Copies and stores the content in 'value' starting from 'off', and returns the length of the input data.

Can be used when the buffer type is either BT_STRING or BT_CARRAY. Otherwise, a WebtBufferException (tperrno = TPEINVAL) will be thrown.

Parameter

Exception

Copies and stores the content in 'value' starting from 'offset', and returns the length of the input data.

Can be used when the buffer type is either BT_STRING or BT_CARRAY. Otherwise, a WebtBufferException (tperrno = TPEINVAL) will be thrown.

Parameter

Exception

Sets user data.

Can be used when the buffer type is either BT_STRING or BT_CARRAY. Otherwise, a WebtBufferException (tperrno = TPEINVAL) will be thrown. 0x00 is added to the end of the data converted into a byte array.

Parameter

Exception

Initializes a default service name and a WebtConnection object to NULL. It also initializes a default character set to the return value of a WebtSystem.getDefaultCharset method.

Creates a WebtBuffer object with the BT_CARRAY buffer type.

Creates a WebtBuffer object with the BT_FIELD buffer type.

Parameter

Creates a WebtBuffer object with the BT_STRING buffer type.

Returns a WebtConnection object used to call a TP method(tpcall, tpgetrply).

Returns the default service name.

Sets the character set to apply to all WebtBuffer objects created by a WebtRemoteService object.

This must be set before calling the createStringBuffer, createCarrayBuffer, and createFieldBuffer methods, so that the value specified in the WebtBuffer object can apply.

Parameter

Returns the character set to apply to all WebtBuffer objects created through a WebtRemoteService object.

Sets the default service name.

Sends a tpacall service request to a Tmax server.

Parameter

Exception

Uses a tpcall to send a service request to a Tmax server.

Parameter

Exception

Used to call a service in a specific server group. In a multi-server-group environment where server groups are bound as COUSINs, this method allows specifying a service within a particular server group and sending the service request asynchronously. It functions similarly to tpacall(), but with the added ability to target a specific server group.

Parameter

Used to call a service in a specific server group. In a multi-server-group environment where server groups are bound as COUSINs, this method allows specifying a service within a particular server group and sending the service request asynchronously. It functions similarly to tpacall(), but with the added ability to target a specific server group.

Parameter

Used to retrieve the server process index of a service in a specific server group. This is used to call a service at the server process level.

Parameter

Used to call a service on a specific server process. The valid range of server process numbers should be obtained using the tpgetsprlist method. All other functionality is similar to tpacall, including receiving a response via the tpgetrply method.

Parameter

Cancels a cd which is a call identifier returned by a tpacall method. Services related to global transactions cannot be canceled. If a service response is successfully canceled, responses received through the cd will also be ignored. If the tpacall method was called by using a WebtTPAListner, the errorHandle method will be called.

Parameter

Exception

Receives a response from a tpacall(). It functions similarly to int tpgetrply(int *cd, char **rbuf, long *rlen, long flags).

Parameter

Exception

Provides information about the server group where the specified service is included, and the other server groups that are set as COUSIN with this server group.

Parameter

By setting a RQ_ANY_QUEUE, and using a RQ service, statistical information of Request Queues, Reply Queues, and Fail Queues can be received when calling WebtRQService.tpqstat and WebtRQService.tpqsvcstat methods.

By setting a RQ_FAIL_QUEUE, and using a RQ service, statistical information of Fail Queues can be received when calling WebtRQService.tpqstat and WebtRQService.tpqsvcstat methods.

By setting a RQ_REQ_QUEUE, and using a RQ service, statistical information of Request Queues can be received when calling WebtRQService.tpqstat and WebtRQService.tpqsvcstat methods.

By setting a RQ_RPLY_QUEUE, and using a RQ service, statistical information of Reply Queues can be received when calling WebtRQService.tpqstat and WebtRQService.tpqsvcstat methods.

When the WebtRQService.tpenq method fails, this value is returned after the message is sent to the Fail Queue.

The return type can be checked using the WebtRQService.checkError method, and the error code can be retrieved using the WebtBuffer.getUserReturnCode method.

This value is returned by the WebtRQService.tpenq method if the specified service name is provided and that service calls tpreturn with TPFAIL as its first parameter.

The return type can be checked using the WebtRQService.checkError method, and the error code can be retrieved using the WebtBuffer.getUserReturnCode method.

This value is returned by the WebtRQService.tpenq method when the second parameter is set to NULL instead of a service name, and the service is successfully provided.

The return type can be checked using the WebtRQService.checkError method, and the error code can be retrieved using the WebtBuffer.getUserReturnCode method.

This value is returned by the WebtRQService.tpenq method if the specified service name is provided and that service calls tpreturn with TPSUCCESS as its first parameter.

The return type can be checked using the WebtRQService.checkError method, and the error code can be retrieved using the WebtBuffer.getUserReturnCode method.

Retrieves detailed information about data stored in the RQ. The service name can be obtained using the rqbuf.getServiceName method, and the error code can be retrieved using the rqbuf.getUserReturnCode method.

Returns the specified default RQ name.

Resets the RQ name used as the default value when calling the tpenq() and tpdeq() methods.

Parameter

Exception

Retrieves data stored in the RQ. Once read, the data is removed from the RQ and cannot be read again. This method calls the tpdeq() service.

Parameter

Exception

Retrieves data stored in the RQ. Once read, the data is removed from the RQ and cannot be read again. This method calls the tpenq() service.

Parameter

Exception

Stores data received from a service call in the RQ. The data is managed and read in the order it arrives. This method calls the tpenq service.

Parameter

Exception

Retrieves statistical results for the data stored in the queues. If qname is NULL, the getQueueName method is used to determine the queue name.

Parameter

Exception

Retrieves statistical results for the data stored in the queues by service name. If qname is NULL, the getQueueName method is used to determine the queue name.

Parameter

Exception

Returns true or false depending on whether the session is closed.

Returns true or false depending on whether the tprecv operation can be performed.

Exception

Returns true or false depending on whether the tpsend operation can be performed.

Exception

Sets a connection for interactive (conversational) mode services. The owner responsible for managing the conversation must be specified when establishing the connection.

Parameter

Exception

The party that holds connection control after tpconnect can immediately terminate the connection in an interactive service.

Exception

The party that holds connection control passes control to the other party and switches to receive mode, where it only receives messages.

Parameter

Exception

Sends messages for interactive services.

Parameter

Exception

Converts a field data element into a byte[ ] array, and returns it.

According to the field type, converts field data as follows:

Exception

Converts a field data element into a byte value, and returns it.

According to the field type, converts field data as follows:

Exception

Converts a field data element into a double type, and returns it.

If the original data is a value, the field data is converted and returned according to its field type.

The field data is converted and returned as follows.

Exception

Converts a data element into a float type, and returns it.

If the original data is a value, the field data is converted and returned according to its field type, as follows:

Exception

Returns a reference to the WebtField object that contains this WebtFieldElement.

Converts a data element into a int type, and returns it.

If the original data is a value, the field data is converted and returned according to its field type, as follows:

Exception

Converts a data element into a long type, and returns it.

If the original data is a value, the field data is converted and returned according to its field type, as follows:

Exception

Converts a data element into a short type, and returns it.

If the original data is a value, the field data is converted and returned according to its field type, as follows:

Exception

Converts a data element into a string, and returns it. Returns the same result as stringValue(getField().getDefaultCharset()).

Exception

Returns the field key name as an int constant.

Parameter

Converts an int type constant field key name to a string type and returns it.

Parameter

Returns the field key type.

Parameter

If the field key is invalid, -1 is returned. If the field key is valid, one of the following is returned:

Loads a field key from the fdl file.

Parameter

Exception

Creates and returns an int type constant field key when the user defines a field type and field number in the application.

Parameter

Returns the number of currently loaded field keys.

Adds field data using the field key value or the field key name matching the specified key.

Parameter

Exception

Returns the number of elements of field data that has the same field key value as the specified key.

Parameter

Exception

Returns the data associated with the field key value or key name matching the specified key. If an index is specified, the data at that index position is returned.

Parameter

Exception

Returns the data associated with the field key value or key name matching the specified key in a byte. If an index is specified, the data at that index position is returned.

Parameter

Exception

Returns the data associated with the field key value or key name matching the specified key in a byte[] array. If an index is specified, the data at that index position is returned.

Parameter

Exception

Returns the data associated with the field key value or key name matching the specified key in a double type. If an index is specified, the data at that index position is returned.

Parameter

Exception

Returns the data associated with the field key value or key name matching the specified key in a float type. If an index is specified, the data at that index position is returned.

Parameter

Exception

Returns the data associated with the field key value or key name matching the specified key in an integer. If an index is specified, the data at that index position is returned.

Parameter

Exception

Returns the data associated with the field key value or key name matching the specified key in a long type. If an index is specified, the data at that index position is returned.

Parameter

Exception

Returns the data associated with the field key value or key name matching the specified key in a short type. If an index is specified, the data at that index position is returned.

Parameter

Exception

Returns the data associated with the field key value or key name matching the specified key in a string. If an index is specified, the data at that index position is returned.

Parameter

Exception

Searches for a list of field key names (as strings) from the field key names list created by WebtSystem.createDefaultFieldKeyTable, and returns the matching list.

Inserts field data with a field key value or field key name matching the specified key. For string-type data, the character set can be specified.

Parameter

Exception

Removes the field data element with the field key value or key name matching the specified key.

Parameter

Exception

Removes all field data elements with the field key value or key name matching the specified key.

Parameter

Exception

Converts a value to a field key type and adds it. If the value is NULL, it will be ignored and not added.

Parameter

Exception

Converts a value to a field key type and inserts it. If the value is NULL, it will be ignored and not inserted.

Parameter

Exception

Deletes the first data and return it.

Exception

Removes the 0th value in the specified field type buffer.

Exception

Returns all data elements in WebtFieldElement[ ].

Exception

Returns a character set that was used to convert data in a WebtField object into a string type, or string type data into a byte[ ].

Returns all data elements as an enumeration type of a WebtFieldElement.

Exception

Returns the field key value of a WebtField object.

Returns the field key type of a WebtField object.

Returns all data elements as a vector type of a WebtFieldElement.

Exception

Checks if the field key of a WebtField object is a numeric type.

Deletes all data.

Replaces the value at the specified index with the given value converted to the specified field type. If the value is NULL, it is ignored.

Parameter

Exception

Sets the character set used to convert data in the WebtField object from a string to a byte[] array and vice versa. If not explicitly set, the character set specified by WebtRemoteService is used.

Parameter

Returns the number of stored data.

Displays the content of a field as a string that the user can read. It functions similarly to fbprint( ) provided by Tmax.

Deletes all WebtField objects.

Creates a WebtField object whose field key value is fldkey, and returns it. If there is another WebtField object whose field key value is the same as the value of fldkey, the object will be returned.

To create a WebtField object by entering a field key name using fldkeyName, a field key table must first be loaded by using WebtSystem.createDefaultFieldKeyTable(String).

Parameter

Exception

Returns a WebtField object with the specified field key value (fldKey) or field key name (fldKeyName). If no such object exists, NULL is returned.

Exception

Returns a list of field keys in strings. The field keys are retrieved from the field key table generated by WebtSystem.createDefaultFieldKeyTable(String).

Exception

Returns a vector of WebtField objects, sorted in the order in which they were created.

Exception

Removes the WebtField object whose field key value matches the specified fldkey. Returns NULL if no matching WebtField object is found.

Exception

Removes the WebtField object whose field key name matches the specified fldkeyName. Returns NULL if no matching WebtField object is found.

Exception

Prototype

public WebtEventConnection(String hostAddr,
                           int hostPort)

Parameter

Prototype

public WebtEventConnection(String hostAddr,
                           int hostPort,
                           boolean doConnect)

Parameter

Prototype

public WebtEventConnection(String hostAddr,
                           int hostPort,
                           boolean doConnect,
                           int conntimeout)

Parameter

Prototype

public WebtEventConnection(String hostAddr,
                          int hostPort,
                          int conntimeout)

Parameter

Prototype

public WebtEventConnection(String hostAddr,
                           int hostPort,
                           String backupAddr,
                           int backupPort)

Parameter

Prototype

public WebtEventConnection(String hostAddr,
                           int hostPort,
                           String backupAddr,
                           int backupPort,
                           boolean doConnect,
                           int conntimeout)

Parameter

Prototype

public WebtEventConnection(String hostAddr,
                           int hostPort,
                           String username,
                           String userpwd,
                           String domainname,
                           String domainpwd)

Parameter

Closes a socket connection to Tmax. If the connection is managed by the connection pool, the connection will not be closed, and it will be returned to the pool for reuse.

Registers a handler to process event messages.

Parameter

Exception

Selects a message from event messages transmitted by tpbroadcast(), tppost(), tpsendtocli(), and tpnotify().

Parameter

Exception

Subscribes to a post group to receive tppost() messages.

Parameter

Exception

Withdraws from a registered post group to stop receiving tppost messages.

Parameter

Exception

Data received as a response to a tpacall.

Data transmitted from a tpbroadcast.

Data transmitted from a tpnotify.

Data transmitted from a tppost.

Data transmitted from a tpsendtocli.

If an error—typically a network-related one—occurs while handling an unsolicited message, the handleError method is invoked.

Parameter

When receiving an unsolicited message selected by WebtEventConnection.setEventMask(int), this handleEvent method is invoked.

Parameter

Begins a global transaction. It performs the same function as an int tx_begin( ), which is a TX function.

Exception

Commits a global transaction. It performs the same function as an int tx_commit(), which is a TX function.

Exception

Rolls back a global transaction. It performs the same function as int tx_rollback(), which is a TX function.

Exception

Returns the timeout value to apply when calling commit and rollback methods.

Returns the timeout value for transactions.

Returns TRUE/FALSE depending on whether chain control has been obtained.

Sets the timeout value to apply when calling commit and rollback methods.

Parameter

Performs a chain control.

Parameter

Sets the timeout for transactions. If the timeout period is not explicitly specified using the setTimeout function, the value defined with TXTIME in the Tmax configuration file will be used.

Parameter

Creates a field key table.

Parameter

Exception

Returns the default character set of the WebT system.

Returns the default field key table.

Prints the WebT version information to standard output when executing WebtSystem.

Sets the default character set to use in WebT.

If no character set is specified when creating a WebtService or WebtRemoteService object, the value specified using the setDefaultCharset method is used by default.

Parameter

Returns the WebT version.