Package org.apache.cayenne.ejbql

Interface EJBQLCompiledExpression

public interface EJBQLCompiledExpression
Represents an EJB QL expression "compiled" in the context of a certain mapping.
Since:
3.0

  • Method Details

    • getExpression

      EJBQLExpression getExpression()
      Returns a tree representation of an EJBQL expression.

    • getRootDescriptor

      ClassDescriptor getRootDescriptor()
      Returns a descriptor of the root of this expression such as entity being fetched or updated.

    • getEntityDescriptor

      ClassDescriptor getEntityDescriptor(String identifier)
      Returns a ClassDescriptor for the id variable.

    • getIncomingRelationships

      List<DbRelationship> getIncomingRelationships(String identifier)
      Returns a collection of relationships that joins identifier with a parent entity. Returns null if the identifier corresponds to one of the query roots.

    • getSource

      String getSource()
      Returns EJB QL source of the compiled expression if available.

    • getResult

      SQLResult getResult()
      Returns a mapping of the result set columns, or null if this is not a select expression.

    • getPrefetchTree

      PrefetchTreeNode getPrefetchTree()
      Returns prefetched columns tree for fetch joins.