Package org.apache.openjpa.persistence.query

Interface QueryBuilder

All Known Subinterfaces:
OpenJPAQueryBuilder
All Known Implementing Classes:
QueryBuilderImpl
public interface QueryBuilder
Factory interface for query definition objects

  • Method Details

    • createQueryDefinition

      QueryDefinition createQueryDefinition()
      Create an uninitialized query definition object.
      Returns:
      query definition instance

    • createQueryDefinition

      DomainObject createQueryDefinition(Class root)
      Create a query definition object with the given root. The root must be an entity class.
      Parameters:
      cls - - an entity class
      Returns:
      root domain object

    • createSubqueryDefinition

      DomainObject createSubqueryDefinition(PathExpression path)
      Create a query definition object whose root is derived from a domain object of the containing query. Provides support for correlated subqueries. Joins against the resulting domain object do not affect the query domain of the containing query. The path expression must correspond to an entity class. The path expression must not be a domain object of the containing query.
      Parameters:
      path - - path expression corresponding to the domain object used to derive the subquery root.
      Returns:
      the subquery DomainObject