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Properties
As you can see from the database the database layout, the public properties of the Resource class are all part of the main resource table. The two protected properties attr and loaded are created at runtime. There are many situations where only the core information is required. To improve performance, attribute data is ignored when it is not required. Attributes are stored in the database as longtext; non-primitive types (such as arrays) are serialized and stored as a string.
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