Force.com Streaming API Developer's Guide

Clouds with binary code floating aboveCloud with binary code floating above

No Results

Search Tips:

  • Please consider misspellings
  • Try different search keywords
PDF

Newer Version Available

This content describes an older version of this product. View Latest

Notifications

After a record is created or updated (an event), the record is evaluated against the PushTopic query and a notification may be generated. A notification is the message sent to the channel as the result of an event. The notification is a JSON formatted message. The PushTopic field NotifyForFields specifies how the record is evaluated against the PushTopic query. The NotifyForFields values are:

NotifyForFields Value Description
All Notifications are generated for all record field changes, provided the values of the fields referenced in the WHERE clause match the values specified in the WHERE clause.
Referenced (default) Changes to fields referenced in both the SELECT clause and WHERE clause are evaluated. Notifications are generated for all records where a field referenced in the SELECT clause changes or a field referenced in the WHERE clause changes and the values of the fields referenced in the WHERE clause match the values specified in the WHERE clause.
Select Changes to fields referenced in the SELECT clause are evaluated. Notifications are generated for all records where a field referenced in the SELECT clause changes and the values of the fields referenced in the WHERE clause match the values specified in the WHERE clause.
Where Changes to fields referenced in the WHERE clause are evaluated. Notifications are generated for all records where a field referenced in the WHERE clause changes and the values of the fields referenced in the WHERE clause match the values specified in the WHERE clause.

The fields that you specify in the PushTopic query SELECT clause are contained in the notification message.