Package org.apache.cayenne.ejbql
Interface EJBQLCompiledExpression
-
public interface EJBQLCompiledExpressionRepresents an EJB QL expression "compiled" in the context of a certain mapping.- Since:
- 3.0
-
-
Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description ClassDescriptorgetEntityDescriptor(String identifier)Returns a ClassDescriptor for the id variable.EJBQLExpressiongetExpression()Returns a tree representation of an EJBQL expression.List<DbRelationship>getIncomingRelationships(String identifier)Returns a collection of relationships that joins identifier with a parent entity.PrefetchTreeNodegetPrefetchTree()Returns prefetched columns tree for fetch joins.SQLResultgetResult()Returns a mapping of the result set columns, or null if this is not a select expression.ClassDescriptorgetRootDescriptor()Returns a descriptor of the root of this expression such as entity being fetched or updated.StringgetSource()Returns EJB QL source of the compiled expression if available.
-
-
-
Method Detail
-
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.
-
-