Tracks synchronization statistics for download operations by table.

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.

Default action

None.

Remarks

The download_statistics event allows you to gather, for any user and table, statistics on downloads as they apply to that table. The download_statistics table script is called just prior to the commit at the end of the download transaction.

See also

• Script parameters
• Adding and deleting scripts
• download_statistics connection event
• upload_statistics connection event
• upload_statistics table event
• synchronization_statistics connection event
• synchronization_statistics table event
• time_statistics connection event
• time_statistics table event
• MobiLink Monitor
• Using remote IDs and MobiLink user names in scripts

SQL example

The following example inserts synchronization statistics into a table called download_audit. Once vital statistics are inserted into the audit table, you may use these statistics to monitor your synchronizations and make optimizations where applicable.

CALL ml_add_table_script(
 'ver1',
 'table1',
 'download_statistics',
 'INSERT INTO download_audit (
   user_name, 
   table, warnings, 
   errors,
   deleted_rows, 
   fetched_rows, 
   download_rows, 
   bytes)
  VALUES (
   {ml s.username}, 
   {ml s.table}, 
   {ml s.warnings}, 
   {ml s.errors}, 
   {ml s.fetched_rows}, 
   {ml s.deleted_rows}, 
   {ml s.filtered_rows}, 
   {ml s.bytes})')

Java example

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

CALL ml_add_java_table_script(
  'ver1',
  'table1',
  'download_statistics',
  'ExamplePackage.ExampleClass.downloadStatisticsTable' )

The following is the sample Java method downloadStatisticsTable. It prints some statistics for this table to the MobiLink message log. (Note that printing statistics for a table to the MobiLink message log might be useful at development time but would slow down a production server.)

public String downloadStatisticsTable(
  String user,
  String table,
  int warnings,
  int errors,
  int fetchedRows,
  int deletedRows,
  int bytes ) {
  java.lang.System.out.println( "download table stats "
   + "table: " + table + "bytes: " + bytes );
  return ( null );
}

.NET example

The following call to a MobiLink system procedure registers a .NET method called DownloadTableStats as the script for the download_statistics table event when synchronizing the script version ver1 and the table table1.

CALL ml_add_dnet_table_script(
 'ver1',
 'table1',
 'download_statistics',
 'TestScripts.Test.DownloadTableStats'
)

The following is the sample .NET method DownloadTableStats. It prints some statistics for this table to the MobiLink message log. (Note that printing statistics for a table to the MobiLink message log might be useful at development time but would slow down a production server.)

public string DownloadTableStats(
  string user,
  string table,
  int warnings,
  int errors,
  int deletedRows,
  int fetchedRows,
  int downloadRows,
  int bytes ) {
  System.Console.WriteLine( "download table stats "
   + "table: " + table + "bytes: " + bytes );
  return ( null );
}