Package org.eclipse.persistence.jpa.jpql.parser

Class DefaultJPQLGrammar

java.lang.Object
org.eclipse.persistence.jpa.jpql.parser.DefaultJPQLGrammar
All Implemented Interfaces:
JPQLGrammar
public final class DefaultJPQLGrammar extends Object implements JPQLGrammar
This JPQL grammar provides support for parsing JPQL queries defined in the latest JPA functional specification. The current version of the functional specification is JSR-338 - Java Persistence 2.1.

Provisional API: This interface is part of an interim API that is still under development and expected to change significantly before reaching stability. It is available at this early stage to solicit feedback from pioneering adopters on the understanding that any code that uses this API will almost certainly be broken (repeatedly) as the API evolves.

Version:
2.5
See Also:
Author:
Pascal Filion

  • Field Details

  • Method Details

    • instance

      public static JPQLGrammar instance()
      Returns the singleton instance of this class.
      Returns:
      The singleton instance of this DefaultJPQLGrammar

    • getExpressionRegistry

      public ExpressionRegistry getExpressionRegistry()
      Description copied from interface: JPQLGrammar
      Returns the registry containing the JPQLQueryBNFs and the ExpressionFactories that are used to properly parse a JPQL query.
      Specified by:
      getExpressionRegistry in interface JPQLGrammar
      Returns:
      The registry containing the information related to the JPQL grammar

    • getJPAVersion

      public JPAVersion getJPAVersion()
      Description copied from interface: JPQLGrammar
      Returns the JPAVersion of the Java Persistence supported by this grammar.
      Specified by:
      getJPAVersion in interface JPQLGrammar
      Returns:
      The JPA version supported by this grammar

    • getProvider

      public String getProvider()
      Description copied from interface: JPQLGrammar
      Returns the persistence provider name.
      Specified by:
      getProvider in interface JPQLGrammar
      Returns:
      The name of the persistence provider, null should never be returned

    • getProviderVersion

      public String getProviderVersion()
      Description copied from interface: JPQLGrammar
      Returns the version of the persistence provider.
      Specified by:
      getProviderVersion in interface JPQLGrammar
      Returns:
      The version of the persistence provider, if one is extending the default JPQL grammar defined in the Java Persistence specification, otherwise returns an empty string

    • toString

      public String toString()
      Overrides:
      toString in class Object