# Package org.apache.cayenne.map

Contains O/R mapping classes that store relational database metadata information and map it to Java classes.

See: Description

- Interface Summary
  Interface | Description
  --- | ---
  EntityListenerFactory | A factory used to create entity listeners.
  EntitySorter | Defines API for sorting of Cayenne entities based on their mutual dependencies.
  MappingNamespace | Defines API of a container of DbEntities, ObjEntities, Procedures, Queries and other mapping objects.
  PathComponent<T extends Attribute,U extends Relationship> | A component in a path chain.

- Class Summary
  Class | Description
  --- | ---
  AshwoodEntitySorter | Deprecated since 3.1 moved to "org.apache.cayenne.ashwood" package.
  Attribute | Defines a property descriptor that is a part of an Entity.
  CallbackDescriptor | A mapping descriptor of a single callback event.
  CallbackMap | A generic descriptor of a set of standard lifecycle callbacks.
  DataMap | Stores a collection of related mapping objects that describe database and object layers of an application.
  DbAttribute | A DbAttribute defines a descriptor for a single database table column.
  DbEntity | A DbEntity is a mapping descriptor that defines a structure of a database table.
  DbJoin | Defines a join between two attributes of a given relationship.
  DbKeyGenerator | DbKeyGenerator is an abstraction of a primary key generator It configures the primary key generation per DbEntity in a RDBMS independent manner.
  DbRelationship | A DbRelationship is a descriptor of a database inter-table relationship based on one or more primary key/foreign key pairs.
  DbRelationshipDetected | A subclass of `DbRelationship` to hold some extra runtime information.
  DeleteRule | Defines constants for the possible values of ObjRelationship delete rules.
  DetectedDbEntity | A `DbEntity` subclass used to hold extra JDBC metadata.
  EjbqlBuilder |
  Embeddable | A mapping descriptor of an embeddable class.
  EmbeddableAttribute | A persistent attribute of an embeddable object.
  EmbeddedAttribute | An attribute of the ObjEntity that maps to an embeddable class.
  Entity | An Entity is an abstract descriptor for an entity mapping concept.
  EntityInheritanceTree | A tree structure representing inheritance hierarchy of an ObjEntity and its subentities.
  EntityListener | A mapping descriptor of an entity listener class that declares one or more callback methods to be notified of the entity events.
  EntityResolver | Represents a virtual shared namespace for zero or more DataMaps.
  EntityResult | A metadata object that provides mapping of a set of result columns to an ObjEntity.
  MapLoader | Default MapLoader.
  ObjAttribute | An ObjAttribute is a mapping descriptor of a Java class property.
  ObjEntity | ObjEntity is a mapping descriptor for a DataObject Java class.
  ObjRelationship | Describes an association between two Java classes mapped as source and target ObjEntity.
  Procedure | A mapping descriptor for a database stored procedure.
  ProcedureParameter | A descriptor for the Procedure parameter.
  Relationship | Defines a relationship between two entities.
  SQLResult | A metadata object that defines how a row in a result set can be converted to result objects.

- Enum Summary
  Enum | Description
  --- | ---
  JoinType | Enumerates supported JOIN types.
  LifecycleEvent | Defines possible entity object lifecycle events.

## Package org.apache.cayenne.map Description

Contains O/R mapping classes that store relational database metadata information and map it to Java classes.

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