edu.ucsb.nceas.metacat.dataone.hazelcast

Class SystemMetadataMap

java.lang.Object

edu.ucsb.nceas.metacat.dataone.hazelcast.SystemMetadataMap

All Implemented Interfaces:

com.hazelcast.core.MapLoader<org.dataone.service.types.v1.Identifier,org.dataone.service.types.v2.SystemMetadata>, com.hazelcast.core.MapStore<org.dataone.service.types.v1.Identifier,org.dataone.service.types.v2.SystemMetadata>

public class SystemMetadataMap
extends java.lang.Object
implements com.hazelcast.core.MapStore<org.dataone.service.types.v1.Identifier,org.dataone.service.types.v2.SystemMetadata>, com.hazelcast.core.MapLoader<org.dataone.service.types.v1.Identifier,org.dataone.service.types.v2.SystemMetadata>

Storage implementation for Hazelcast System Metadata

Author:

leinfelder

Constructor Summary

Constructors

Constructor and Description
SystemMetadataMap()

Method Summary

Modifier and Type	Method and Description
void	delete(org.dataone.service.types.v1.Identifier arg0)
void	deleteAll(java.util.Collection<org.dataone.service.types.v1.Identifier> arg0)
org.dataone.service.types.v2.SystemMetadata	load(org.dataone.service.types.v1.Identifier pid)
java.util.Map<org.dataone.service.types.v1.Identifier,org.dataone.service.types.v2.SystemMetadata>	loadAll(java.util.Collection<org.dataone.service.types.v1.Identifier> keys)
java.util.Set<org.dataone.service.types.v1.Identifier>	loadAllKeys() Returning null so that no entries are loaded on map initialization
void	store(org.dataone.service.types.v1.Identifier pid, org.dataone.service.types.v2.SystemMetadata sm)
void	storeAll(java.util.Map<org.dataone.service.types.v1.Identifier,org.dataone.service.types.v2.SystemMetadata> map)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SystemMetadataMap

public SystemMetadataMap()

Method Detail

delete

public void delete(org.dataone.service.types.v1.Identifier arg0)

Specified by:

delete in interface com.hazelcast.core.MapStore<org.dataone.service.types.v1.Identifier,org.dataone.service.types.v2.SystemMetadata>

deleteAll

public void deleteAll(java.util.Collection<org.dataone.service.types.v1.Identifier> arg0)

Specified by:

deleteAll in interface com.hazelcast.core.MapStore<org.dataone.service.types.v1.Identifier,org.dataone.service.types.v2.SystemMetadata>

store

public void store(org.dataone.service.types.v1.Identifier pid,
                  org.dataone.service.types.v2.SystemMetadata sm)

Specified by:

store in interface com.hazelcast.core.MapStore<org.dataone.service.types.v1.Identifier,org.dataone.service.types.v2.SystemMetadata>

storeAll

public void storeAll(java.util.Map<org.dataone.service.types.v1.Identifier,org.dataone.service.types.v2.SystemMetadata> map)

Specified by:

storeAll in interface com.hazelcast.core.MapStore<org.dataone.service.types.v1.Identifier,org.dataone.service.types.v2.SystemMetadata>

load

public org.dataone.service.types.v2.SystemMetadata load(org.dataone.service.types.v1.Identifier pid)

Specified by:

load in interface com.hazelcast.core.MapLoader<org.dataone.service.types.v1.Identifier,org.dataone.service.types.v2.SystemMetadata>

loadAll

public java.util.Map<org.dataone.service.types.v1.Identifier,org.dataone.service.types.v2.SystemMetadata> loadAll(java.util.Collection<org.dataone.service.types.v1.Identifier> keys)

Specified by:

loadAll in interface com.hazelcast.core.MapLoader<org.dataone.service.types.v1.Identifier,org.dataone.service.types.v2.SystemMetadata>

loadAllKeys

public java.util.Set<org.dataone.service.types.v1.Identifier> loadAllKeys()

Returning null so that no entries are loaded on map initialization

Specified by:

loadAllKeys in interface com.hazelcast.core.MapLoader<org.dataone.service.types.v1.Identifier,org.dataone.service.types.v2.SystemMetadata>

See Also:

As of 1.9.3 MapLoader has the new MapLoader.loadAllKeys API. It is used for pre-populating the in-memory map when the map is first touched/used. If MapLoader.loadAllKeys returns NULL then nothing will be loaded. Your MapLoader.loadAllKeys implementation can return all or some of the keys. You may select and return only the hot keys, for instance. Also note that this is the fastest way of pre-populating the map as Hazelcast will optimize the loading process by having each node loading owned portion of the entries.