org.apache.openjpa.kernel

Interface FinderQuery<K,V,R>

All Known Implementing Classes:

FinderQueryImpl

public interface FinderQuery<K,V,R>

A finder query is a query for an instance of a class by its primary key. A finder query is parameterized by the type of key K, type of value V and type of result R.

Since:

2.0.0

Author:

Pinaki Poddar

Method Summary

Modifier and Type	Method and Description
R	execute(OpenJPAStateManager sm, StoreManager store, FetchConfiguration fetch) Execute the query for a given instance.
V	getDelegate() Gets the value to which this receiver delegates its execution.
K	getIdentifier() Gets the identifier of this receiver.
String	getQueryString() Gets the query string.

Method Detail

getIdentifier

K getIdentifier()

Gets the identifier of this receiver.

getDelegate

V getDelegate()

Gets the value to which this receiver delegates its execution.

execute

R execute(OpenJPAStateManager sm,
          StoreManager store,
          FetchConfiguration fetch)

Execute the query for a given instance.

Parameters:

sm - the StateManager for a given instance carrying the primary key values.

store - the data store against which the query is to be executed.

fetch - fetch parameters

Returns:

the result of execution.

getQueryString

String getQueryString()

Gets the query string.