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SQL Anywhere 11.0.1 (Français) » MobiLink - Server Administration » MobiLink Events » Synchronization events

 

upload_statistics connection event

Tracks synchronization statistics for upload operations.

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.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.

1

s.warnings

INTEGER. The number of warnings that occurred.

2

s.errors

INTEGER. The number of errors that occurred.

3

s.inserted_rows

INTEGER. The number of rows that were successfully inserted in the consolidated database.

4

s.deleted_rows

INTEGER. The number of rows that were successfully deleted from the consolidated database.

5

s.updated_rows

INTEGER. The number of rows that were successfully updated in the consolidated database.

6

s.conflicted_inserts

INTEGER. Always zero.

7

s.conflicted_deletes

INTEGER. Always zero.

8

s.conflicted_updates

INTEGER. The number of update rows that caused conflict. A row is included only when a resolve conflict script was successfully called for it.

9

s.ignored_inserts

INTEGER. The total number of upload insert rows that were ignored. They were ignored because 1) there is no upload_insert script in normal mode or no upload_new_row_insert script in forced conflict mode; or 2) errors occurred when the MobiLink server was invoking the corresponding script and the handle_error or handle_odbc_error event returned 1000.

10

s.ignored_deletes

INTEGER. The number of upload delete rows that caused errors while the upload_delete script was invoked, when the handle_error or handle_odbc_error are defined and returned 1000, or when there is no upload_delete script defined for the given table.

11

s.ignored_updates

INTEGER. The number of upload update rows that caused conflict but a resolve conflict script was not successfully called or no upload_update script was defined.

12

s.bytes

INTEGER. The amount of memory used within the MobiLink server to store the upload.

13

s.deadlocks

INTEGER. The number of deadlocks in the consolidated database that were detected for the synchronization.

14

Default action

None.

Remarks

The upload_statistics event allows you to gather, for any user, statistics on uploads. The upload_statistics connection script is called just prior to the commit at the end of the upload transaction.

See also
SQL example

The following example inserts synchronization statistics for upload operations into the table upload_summary_audit.

CALL ml_add_connection_script (
 'ver1',
 'upload_statistics', 
 'INSERT INTO upload_summary_audit (
   ml_user, 
   warnings, 
   errors, 
   inserted_rows,
   deleted_rows, 
   updated_rows, 
   conflicted_inserts,
   conflicted_deletes, 
   conflicted_updates,
   bytes, 
   ignored_inserts, 
   ignored deletes,
   ignored_updates, 
   bytes, deadlocks )
  VALUES (
   {ml s.username}, 
   {ml s.warnings}, 
   {ml s.errors}, 
   {ml s.inserted_rows}, 
   {ml s.deleted_rows}, 
   {ml s.updated_rows}, 
   {ml s.conflicted_inserts}, 
   {ml s.conflicted_deletes}, 
   {ml s.conflicted_updates}, 
   {ml s.ignored_inserts}, 
   {ml s.ignored_deletes}, 
   {ml s.ignored_updates}, 
   {ml s.bytes}, 
   {ml s.deadlocks} ) ' )

Once statistics are inserted into the audit table, you may use these statistics to monitor your synchronizations and make optimizations where applicable.

Java example

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

CALL ml_add_java_connection_script(
   'ver1',
   'upload_statistics',
   'ExamplePackage.ExampleClass.uploadStatisticsConnection' )

The following is the sample Java method uploadStatisticsConnection. It logs some statistics to the MobiLink message log. (Note that logging statistics to the MobiLink message log might be useful at development time but would slow down a production server.)

public String uploadStatisticsConnection(
  String user,
  int warnings,
  int errors,
  int insertedRows,
  int deletedRows,
  int updatedRows,
  int conflictedInserts,
  int conflictedDeletes,
  int conflictedUpdates,
  int ignoredInserts,
  int ignoredDeletes,
  int ignoredUpdates,
  int bytes,
  int deadlocks ) {
  java.lang.System.out.println( "updated rows: " +
   updatedRows ); 
  return ( null );
}
.NET example

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

CALL ml_add_dnet_connection_script(
  'ver1',
  'upload_statistics',
  'TestScripts.Test.UploadStats'
)

The following is the sample .NET method UploadStats. It logs some statistics to the MobiLink message log. (Note that logging statistics to the MobiLink message log might be useful at development time but would slow down a production server.)

public string UploadStats (
  string user,
  int warnings,
  int errors,
  int insertedRows,
  int deletedRows,
  int updatedRows,
  int conflictInserts,
  int conflictDeletes,
  int conflictUpdates,
  int ignoredInserts,
  int ignoredDeletes,
  int ignoredUpdates,
  int bytes,
  int deadlocks ) {  
  System.Console.WriteLine( "updated rows: " +
    updatedRows );
  return ( null ); 
}