Native Queries
Native queries(NQ) were introduced by Prof. William Cook at the 27th International Conference on Software Engineering (ICSE) in May of 2005.
NQs are queries written in native language. A native query is a peace of code that receives an object of the database and returns a boolean value to indicate the query manager if the object must be included in the query result set.
Native Queries advantages are:
- No need to learn another query language
- As NQs are written in native language(Java or .net):
- NQs are ‘refactorable’
- No more problem with string based queries, NQs are checked in compile time
To implement a Native query in ODB, you must implement the interface SimpleNativeQuery. This interface do not have contract, but you must implement the following method ‘boolean match(ObjectType object)’.
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