Content Server Manual / Version 2401
Table Of Contents
Note
The length of an observed StringProperty must not exceed 256.
When an existing StringProperty changes its observe attribute
then the values of the observed property in the table ObservedValue will be automatically
added or removed.
In the following SQL statements CMExternalCategory is the example name of the content type and
externalId the example name of the property.
Proceed as follows:
Be sure to have a backup of your data.
Stop the Content Server.
When the not observed
StringPropertyproperty should be observed, change theobserveattribute in the content type definition file to 'true'.When the already observed
StringPropertyproperty should not be observed anymore, remove theobserveattribute.Start the Content Server again.
Check the logs
When the property is newly observed, the existing values of the property will be automatically
inserted into the ObservedValues table. You should see log entries like the following in the Content Server log.
2018-08-22 13:33:11 [INFO] hox.corem.server.sql.SQLStore [] - \ DocumentTypeRegistry: Update observed property: The property 'externalId' of the document type 'CMExternalCategory' is newly observed. The following command is being executed: \ INSERT INTO ObservedValues (sourceDocument, sourceVersion, propertyName, propertyValue) SELECT c.id_, c.version_, 'externalId', c."externalId" FROM Resources r, CMExternalCategory c WHERE r.id_ = c.id_ AND r.latestVersion_ = c.version_ AND c."externalId" IS NOT NULL AND c."externalId" != '' ORDER BY r.id_ 2018-08-22 13:33:12 [INFO] hox.corem.server.sql.SQLStore [] - \ DocumentTypeRegistry: The statement took 1000 ms and 1000 rows were affected: INSERT INTO ObservedValues (sourceDocument, sourceVersion, propertyName, propertyValue) SELECT c.id_, c.version_, 'externalId', c."externalId" FROM Resources r, CMExternalCategory c WHERE r.id_ = c.id_ AND r.latestVersion_ = c.version_ AND c."externalId" IS NOT NULL AND c."externalId" != '' ORDER BY r.id_
Example 4.9. Log entries when an existing string property is newly observed
When the property isn't any longer observed, the values of the property will be removed from the
ObservedValues table. You should see log entries like the following in the content server log.
2018-08-22 13:33:11 [INFO] hox.corem.server.sql.SQLStore [] - \ DocumentTypeRegistry: Update observed property: The property 'externalId' of the document type 'CMExternalCategory' is not observed anymore. The following command is being executed: \ DELETE FROM CMExternalCategory WHERE propertyname = 'externalId' AND sourceDocument = (SELECT DISTINCT id_ FROM CMExternalCategory WHERE id_ = sourceDocument) 2018-08-22 13:33:12 [INFO] hox.corem.server.sql.SQLStore [] - \ DocumentTypeRegistry: The statement took 1000 ms and 1000 rows were affected: DELETE FROM CMExternalCategory WHERE propertyname = 'externalId' AND sourceDocument = (SELECT DISTINCT id_ FROM CMExternalCategory WHERE id_ = sourceDocument)
Example 4.10. Log entries when an existing string property is not observed anymore
