Package org.apache.openjpa.slice
Interface ReplicationPolicy
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- All Known Implementing Classes:
ReplicationPolicy.Default
public interface ReplicationPolicy
Policy to select one or more of the physical databases referred as slice in which a given persistent instance will be persisted. This interface is invoked for entity types that are specified as ReplicatedTypes in the configuration.- Author:
- Pinaki Poddar
- See Also:
DistributionPolicy
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Nested Class Summary
Nested Classes Modifier and Type Interface Description static class
ReplicationPolicy.Default
Implements a default replication policy to replicate the given instance across all available slices.
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description java.lang.String[]
replicate(java.lang.Object pc, java.util.List<java.lang.String> slices, java.lang.Object context)
Gets the name of the slices where a given instance will be replicated.
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Method Detail
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replicate
java.lang.String[] replicate(java.lang.Object pc, java.util.List<java.lang.String> slices, java.lang.Object context)
Gets the name of the slices where a given instance will be replicated.- Parameters:
pc
- The newly persistent or to-be-merged object.slices
- list of names of the active slices. The ordering of the list is either explicitopenjpa.slice.Names
property or implicit i.e. alphabetic order of available identifiers ifopenjpa.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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