PDO (PHP Data Objects) Is Not a Fluent Interface

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Last Updated on Saturday, 11 June 2011 10:53

Published on Wednesday, 08 June 2011 16:04

Written by David L Norris

Problem

PDO does not provide a fluent interface contrary to the claims of many.  It is deceiving because it looks like a fluent interface on the surface due to its support of method chaining on some objects.  However, PDO doesn't even support method chaining properly.  It does not consistently throw exceptions and instead often uses return values of false to indicate failure.  PDO::query in particular leaves you with a "Fatal error: (method name) method called on non-object" when an error occurs.

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PHP: Salesforce Object Type Determination by Key Prefix

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Last Updated on Wednesday, 08 June 2011 16:18

Published on Friday, 03 June 2011 12:21

Written by David L Norris

Problem

If you export your data from Salesforce you will find yourself with a bunch of cross-relationships and no idea of how to map them.  For example, a dump of Documents will give you a list of object IDs each document is related to.  You might look at that and find yourself lost or sifting through data in dozens of tables.  No need for all of that.  Salesforce adds what they call a keyPrefix to every Object ID.  This is used to instantiate the correct object type for that ID.  If, in your code, you would like to build a factory to realize objects from serialized Salesforce data dumps you need a mapping function that reads the keyPrefix and instantiates the correct object in your code.

View Solution: PHP: Salesforce Object Type Determination by Key Prefix