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Oracle Fusion Middleware Java API Reference for Oracle TopLink 11g Release 1 (11.1.1) E28847-01 |
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java.lang.Object
org.eclipse.persistence.descriptors.partitioning.PartitioningPolicy
org.eclipse.persistence.descriptors.partitioning.FieldPartitioningPolicy
org.eclipse.persistence.descriptors.partitioning.ValuePartitioningPolicy
public class ValuePartitioningPolicy
PUBLIC: ValuePartitioningPolicy partitions access to a database cluster by a field value from the object, such as the object's location, or tenant. Each value is assigned a specific server. All write or read request for object's with that value are sent to the server. If a query does not include the field as a parameter, then it can either be sent to all server's and unioned, or left to the sesion's default behavior.
Field Summary | |
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protected java.lang.String |
defaultConnectionPool The default connection pool is used for any unmapped values. |
protected java.util.List<java.lang.String> |
orderedPartitions Use to track order for compute UCP indx. |
protected java.util.Map<java.lang.Object,java.lang.String> |
partitions Store the value partitions. |
Fields inherited from class org.eclipse.persistence.descriptors.partitioning.FieldPartitioningPolicy |
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partitionField, unionUnpartitionableQueries |
Fields inherited from class org.eclipse.persistence.descriptors.partitioning.PartitioningPolicy |
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name |
Constructor Summary | |
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ValuePartitioningPolicy() |
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ValuePartitioningPolicy(java.lang.String partitionField) |
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ValuePartitioningPolicy(java.lang.String partitionField, boolean unionUnpartitionableQueries) |
Method Summary | |
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void |
addPartition(java.lang.Object value, java.lang.String connectionPool) PUBLIC: Add the value partition. |
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) INTERNAL: Get a connection from one of the pools in a round robin rotation fashion. |
java.lang.String |
getDefaultConnectionPool() PUBLIC: Return the default connection pool used for any unmapped values. |
java.util.List<java.lang.String> |
getOrderedPartitions() |
java.util.Map<java.lang.Object,java.lang.String> |
getPartitions() PUBLIC: Return the value partitions. |
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 |
setDefaultConnectionPool(java.lang.String defaultConnectionPool) PUBLIC: Set the default connection pool used for any unmapped values. |
void |
setOrderedPartitions(java.util.List<java.lang.String> orderedPartitions) |
void |
setPartitions(java.util.Map<java.lang.Object,java.lang.String> partitions) PUBLIC: Set the value partitions. |
Methods inherited from class org.eclipse.persistence.descriptors.partitioning.FieldPartitioningPolicy |
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extractPartitionValueForPersist, getPartitionField, getPartitionFieldName, getUnionUnpartitionableQueries, setPartitionField, setPartitionField, setUnionUnpartitionableQueries |
Methods inherited from class org.eclipse.persistence.descriptors.partitioning.PartitioningPolicy |
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acquireAccessor, convertClassNamesToClasses, getAccessor, getName, initialize, setName |
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.util.Map<java.lang.Object,java.lang.String> partitions
protected java.util.List<java.lang.String> orderedPartitions
protected java.lang.String defaultConnectionPool
Constructor Detail |
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public ValuePartitioningPolicy()
public ValuePartitioningPolicy(java.lang.String partitionField)
public ValuePartitioningPolicy(java.lang.String partitionField, boolean unionUnpartitionableQueries)
Method Detail |
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public java.util.List<java.lang.String> getOrderedPartitions()
public void setOrderedPartitions(java.util.List<java.lang.String> orderedPartitions)
public java.lang.String getDefaultConnectionPool()
public void setDefaultConnectionPool(java.lang.String defaultConnectionPool)
public java.util.Map<java.lang.Object,java.lang.String> getPartitions()
public void setPartitions(java.util.Map<java.lang.Object,java.lang.String> partitions)
public void addPartition(java.lang.Object value, java.lang.String connectionPool)
public 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)
getConnectionsForQuery
in class PartitioningPolicy
public void partitionPersist(org.eclipse.persistence.internal.sessions.AbstractSession session, java.lang.Object object, ClassDescriptor descriptor)
partitionPersist
in class PartitioningPolicy
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