Creates a new JPQLQueryHelper which uses the latest JPQL grammar.

Creates a new JPQLQueryHelper.

Parameters

jpqlGrammar:JPQLGrammar

The JPQLGrammar that will determine how to parse JPQL queries

Exceptions

NullPointerException:

The JPQLGrammar cannot be null

Retrieves the list of descriptors corresponding to the entities used throughout the given JPQL query.

Parameters

jpqlQuery:CharSequence

The JPQL query used to gather the descriptors defined in the declaration clause

session:AbstractSession

The AbstractSession is used to retrieve the descriptors

Returns:List<ClassDescriptor>

The list of descriptors used in the JPQL query or an empty list if the JPQL query is invalid or incomplete

Retrieves the class names and the attribute names mapped to their types that are used in the constructor expressions defined in the SELECT clause.
For instance, from the following JPQL query:

 SELECT new test.example.Employee(e.name, e.id),
       new test.example.Address(a.zipcode)
FROM Employee e, Address a

 |- test.example.Employee
|-   |- name : String
|-   |- id : int
|- test.example.Address
     |- zipcode : int

Parameters

session:AbstractSession

The AbstractSession is used to retrieve the mappings used in the constructor items

Returns:List<ConstructorQueryMappings>

The holder of the result

Retrieves the class names and the attribute names mapped to their types that are used in the constructor expressions defined in the SELECT clause.

For instance, from the following JPQL query:

 SELECT new test.example.Address(a.streetName, a.zipcode)
FROM Address a

 test.example.Address
   |- BasicMapping(streetName) : String
   |- BasicMapping(zipcode) : int

Parameters

session:AbstractSession

The AbstractSession is used to retrieve the mappings used in the constructor items

Returns:ConstructorQueryMappings

The holder of the result

Returns the JPQL grammar that will be used to define how to parse a JPQL query.

Returns:JPQLGrammar

The grammar that will determine how to parse a JPQL query