Working with the regular expressions in Salesforce.com is same as in the Java. But the regex have restrictions to its complexity. For example, this regex throws compilation error:
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([a-zA-Z]*_*)*\.([a-zA-Z]*_*)*\.[0-9]* |
If you have to use multiple times the symbol * in your regex, the Salesforce.com evaluates your pattern as too complicated. Workaround The workaround is to… Read More »
If you are trying to do the UPSERT operation on the User object, for example:
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User theUser = new User(); ... theUser.FederationIdentifier = 'FederationIdentifier'; upsert theUser FederationIdentifier; |
you will get error:
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DML not allowed on User |
Workaround The workaround for this case is use the Database object:
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User theUser = new User(); ... theUser.FederationIdentifier = 'FederationIdentifier'; Database.upsert(theUser, User.Fields.FederationIdentifier, true); |
…and now you can happily use the upsert operation on the User object :)