org.apache.openjpa.slice
Interface QueryTargetPolicy


public interface QueryTargetPolicy

Policy to select one or more of the physical databases referred as slice in which a given query will be executed.

Author:
Pinaki Poddar
See Also:
DistributionPolicy

Method Summary
 String[] getTargets(String query, Map<Object,Object> params, String language, List<String> slices, Object context)
          Gets the name of the slices where a given query will be executed.
 

Method Detail

getTargets

String[] getTargets(String query,
                    Map<Object,Object> params,
                    String language,
                    List<String> slices,
                    Object context)
Gets the name of the slices where a given query will be executed.

Parameters:
query - The query string to be executed.
params - the bound parameters of the query
language - the query language
slices - list of names of the active slices. The ordering of the list is either explicit openjpa.slice.Names property or implicit i.e. alphabetic order of available identifiers if openjpa.slice.Names is unspecified.
context - generic persistence context managing the given instance.
Returns:
identifier of the slices. This names must match one of the given slice names.
See Also:
DistributedConfiguration.getActiveSliceNames()


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