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java.lang.Objectorg.eclipse.persistence.descriptors.partitioning.PartitioningPolicy
public abstract class PartitioningPolicy
PUBLIC: A PartitioningPolicy is used to partition the data for a class across multiple difference databases or across a database cluster such as Oracle RAC. Partitioning can provide improved scalability by allowing multiple database machines to service requests.
If multiple partitions are used to process a single transaction, JTA should be used for proper XA transaction support.
Field Summary | |
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protected java.lang.String |
name
The persistent unit unique name for the policy. |
Constructor Summary | |
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PartitioningPolicy()
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Method Summary | |
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org.eclipse.persistence.internal.databaseaccess.Accessor |
acquireAccessor(java.lang.String poolName,
ServerSession session,
DatabaseQuery query,
boolean returnNullIfDead)
INTERNAL: Return an accessor from the pool. |
void |
convertClassNamesToClasses(java.lang.ClassLoader classLoader)
INTERNAL: Convert all the class-name-based settings to actual class-based settings. |
org.eclipse.persistence.internal.databaseaccess.Accessor |
getAccessor(java.lang.String poolName,
org.eclipse.persistence.internal.sessions.AbstractSession session,
DatabaseQuery query,
boolean returnNullIfDead)
INTERNAL: Return an accessor from the pool for the session. |
abstract java.util.List<org.eclipse.persistence.internal.databaseaccess.Accessor> |
getConnectionsForQuery(org.eclipse.persistence.internal.sessions.AbstractSession session,
DatabaseQuery query,
org.eclipse.persistence.internal.sessions.AbstractRecord arguments)
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java.lang.String |
getName()
PUBLIC: Return the name of the policy. |
void |
initialize(org.eclipse.persistence.internal.sessions.AbstractSession session)
INTERNAL: Initialize the policy. |
void |
partitionPersist(org.eclipse.persistence.internal.sessions.AbstractSession session,
java.lang.Object object,
ClassDescriptor descriptor)
INTERNAL: Allow for the persist call to assign the partition. |
void |
setName(java.lang.String name)
PUBLIC: Set the name of the policy. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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protected java.lang.String name
Constructor Detail |
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public PartitioningPolicy()
Method Detail |
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public abstract java.util.List<org.eclipse.persistence.internal.databaseaccess.Accessor> getConnectionsForQuery(org.eclipse.persistence.internal.sessions.AbstractSession session, DatabaseQuery query, org.eclipse.persistence.internal.sessions.AbstractRecord arguments)
public void partitionPersist(org.eclipse.persistence.internal.sessions.AbstractSession session, java.lang.Object object, ClassDescriptor descriptor)
public void initialize(org.eclipse.persistence.internal.sessions.AbstractSession session)
public void convertClassNamesToClasses(java.lang.ClassLoader classLoader)
public org.eclipse.persistence.internal.databaseaccess.Accessor acquireAccessor(java.lang.String poolName, ServerSession session, DatabaseQuery query, boolean returnNullIfDead)
public org.eclipse.persistence.internal.databaseaccess.Accessor getAccessor(java.lang.String poolName, org.eclipse.persistence.internal.sessions.AbstractSession session, DatabaseQuery query, boolean returnNullIfDead)
public java.lang.String getName()
public void setName(java.lang.String name)
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