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SQL Anywhere 11.0.0 » MobiLink - Server Administration » MobiLink Events » Synchronization events

 

prepare_for_download connection event

Processes any required operations between the upload and download transactions.

Parameters

In the following table, the description provides the SQL data type. If you are writing your script in Java or .NET, you should use the appropriate corresponding data type. See SQL-Java data types and SQL-.NET data types.

In SQL scripts, you can specify event parameters by name or with a question mark, but you cannot mix names and question marks within a script. If you use question marks, the parameters must be in the order shown below and are optional only if no subsequent parameters are specified (for example, you must use parameter 1 if you want to use parameter 2). If you use named parameters, you can specify any subset of the parameters in any order.

Parameter name for SQL scripts

Description

Order

s.last_download

TIMESTAMP. The last download time of any synchronized table.

1

s.remote_id VARCHAR(128). The MobiLink remote ID. You can only reference the remote ID if you are using named parameters. Not applicable

s.username

VARCHAR(128). The MobiLink user name.

2

Default action

None.

Remarks

The MobiLink server executes this script as a separate transaction, between the upload transaction and the start of the download transaction.

See also
SQL example

The following call to a MobiLink system procedure registers a SQL method called prepareForDownload as the script for the prepare_for_download event when synchronizing the script version ver1.

CALL ml_add_connection_script(
   'ver1',
   'prepare_for_download',
   'CALL prepareForDownload(
       { ml s.current_time },
       { ml s.username } )' )

The following is the sample SQL method prepareForDownload. It calls a SQL method to modify some rows in the database.

CREATE PROCEDURE prepareForDownload ( 
  IN ts TIMESTAMP,
  IN user VARCHAR(128))
BEGIN
  CALL adjustUploadedRows(user)
END;
Java example

The following call to a MobiLink system procedure registers a Java method called prepareForDownload as the script for the prepare_for_download event when synchronizing the script version ver1.

CALL ml_add_java_connection_script(
   'ver1',
   'prepare_for_download',
   'ExamplePackage.ExampleClass.prepareForDownload' )

Following is the sample Java method prepareForDownload. It calls a Java method to modify some rows in the database.

public String prepareForDownload( 
  Timestamp ts,
  String user ) {
  adjustUploadedRows( _syncConn, user );
  return( null ); 
}
.NET example

The following call to a MobiLink system procedure registers a .NET method called PrepareForDownload as the script for the prepare_for_download connection event when synchronizing the script version ver1.

CALL ml_add_dnet_connection_script( 
 'ver1',
 'prepare_for_download',
 'TestScripts.Test.PrepareForDownload'
)

Following is the sample .NET method PrepareForDownload. It calls a .NET method to modify some rows in the database.

public string PrepareForDownload(
  DateTime timestamp,
  string user ) {
  AdjustUploadedRows ( _syncConn, user );
  return ( null );
}