Package org.eclipse.persistence.queries

Interface Summary

Call	Call defines the interface used primarily by EclipseLink queries and query mechanisms to perform the necessary actions (read, insert, update, delete) on the data store.
FetchGroupTracker	Purpose: The fetch group tracker interface provides a set of APIs which the domain object must implement, in order to take advantage of the EclipseLink fetch group performance enhancement feature.
QueryRedirector	Purpose: Query redirection allows for a named or parameterized query (or finder) to dynamically determine how the query is to be executed based on the arguments.

Class Summary

ColumnResult	Purpose: Concrete class to represent the ColumnResult structure as defined by the EJB 3.0 Persistence specification.
ComplexQueryResult	Purpose: Used to return multiple sets of information from a query.
ConstructorReportItem	Purpose: An item specifying a class constructor method to be used in a ReportQuery's returned results.
Cursor	Purpose: Abstract class for CursoredStream and ScrolableCursor
CursoredStream	Purpose: Stream class which is used to deal with large collections returned from TOPLink queries more efficiently.
CursoredStreamPolicy	Purpose: Used to support cursored streams in a read query.
CursorPolicy	Purpose: Abstract class for all Cursor-related policy objects
DatabaseQuery	Purpose: Abstract class for all database query objects.
DataModifyQuery	Purpose: Concrete class used for executing non selecting SQL strings.
DataReadQuery	Purpose: Concrete class to perform read using raw SQL.
DeleteAllQuery	Purpose: Query used to delete a collection of objects Responsibilities: Stores & retrieves the objects to delete.
DeleteObjectQuery	Purpose: Used for deleting objects.
DirectReadQuery	Purpose: Concrete class to perform a direct read.
DoesExistQuery	Purpose: This should only be used by the descriptor, this should not be executed directly.
EntityResult	Purpose: Concrete class to represent the EntityResult structure as defined by the EJB 3.0 Persistence specification.
FetchGroup	Purpose: A fetch group is a performance enhancement that allows a group of attributes of an object to be loaded on demand, which means that the data for an attribute might not loaded from the underlying data source until an explicit access call for the attribute first occurs.
FieldResult	Purpose: Concrete class to represent the FieldResult structure as defined by the EJB 3.0 Persistence specification.
InMemoryQueryIndirectionPolicy	Purpose: Provide a means of controlling the behavior of in-memory and conforming queries that access un-instantiated indirection objects in processing the query against cached objects.
InsertObjectQuery	Purpose: Used for inserting new objects into the database.
JPQLCall	Purpose: Used as an abstraction of a database invocation.
MethodBaseQueryRedirector	Purpose: Allows a class to be a QueryRedirector without implementing QueryRedirector.
ModifyAllQuery	PUBLIC: Query used to perform a bulk delete using TopLink's expression framework.
ModifyQuery	Purpose: Abstract class for all modify queries.
ObjectBuildingQuery	Purpose: Abstract class for all read queries that build objects and potentially manipulate the TopLink cache.
ObjectLevelModifyQuery	Purpose: Abstract class for all object modify queries.
ObjectLevelReadQuery	Purpose: Abstract class for all read queries using objects.
QueryByExamplePolicy	Purpose: This policy defines the configuration options for a Query By Example query.
QueryRedirectorHelper	Purpose: The purpose of this class is to provide the query redirector with some helper methods for general EclipseLink operations (such as checking a query against the cache) which may not occur because the query is being redirected.
QueryResultsCachePolicy	PUBLIC: A QueryResultsCache policy dictates how a query's results will be cached.
ReadAllQuery	Purpose: Concrete class for all read queries involving a collection of objects.
ReadObjectQuery	Purpose: Concrete class for all read queries involving a single object.
ReadQuery	Purpose: Abstract class for all read queries.
ReportQuery	Purpose: Query for information about a set of objects instead of the objects themselves.
ReportQueryResult	Purpose: A single row (type) result for a ReportQuery Description: Represents a single row of attribute values (converted using mapping) for a ReportQuery.
ResultSetMappingQuery	Purpose: Concrete class to perform read using raw SQL and the SQLResultSetMapping.
ScrollableCursor
ScrollableCursorPolicy	PUBLIC: ScrollableCursorPolicy allows for additional options to be specified for ReadAllQuery or DataReadQuery.
SQLCall	Purpose: Used as an abstraction of an SQL call.
SQLResult	Purpose: An abstract superclass that represents the commonalities between the main result types of the SQLResultSetMapping
SQLResultSetMapping	Purpose: Concrete class to represent the SQLResultSetMapping structure as defined by the EJB 3.0 Persistence specification.
StoredFunctionCall	Purpose: Used to define a platform independent function call.
StoredProcedureCall	Purpose: Used to define a platform independent procedure call.
UpdateAllQuery	PUBLIC: A Query Class used to perform a bulk update using TopLink's expression framework.
UpdateObjectQuery	Purpose: Used for updating existing objects into the database.
ValueReadQuery	Purpose: Concrete class to perform a read of a single data value.
WriteObjectQuery	Purpose: Used for inserting or updating objects WriteObjectQuery determines whether to perform a insert or an update on the database.