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java.lang.Objectorg.eclipse.persistence.descriptors.partitioning.PartitioningPolicy
org.eclipse.persistence.descriptors.partitioning.FieldPartitioningPolicy
public abstract class FieldPartitioningPolicy
PUBLIC: FieldPartitioningPolicy partitions access to a database cluster by a field value from the object, such as the object's id, location, or tenant. 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 org.eclipse.persistence.internal.helper.DatabaseField |
partitionField
The column to partition by. |
protected boolean |
unionUnpartitionableQueries
If query does not have the partition field in it, should the query be sent to all databases. |
Fields inherited from class org.eclipse.persistence.descriptors.partitioning.PartitioningPolicy |
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name |
Constructor Summary | |
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FieldPartitioningPolicy()
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FieldPartitioningPolicy(java.lang.String partitionField)
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FieldPartitioningPolicy(java.lang.String partitionField,
boolean unionUnpartitionableQueries)
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Method Summary | |
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protected java.lang.Object |
extractPartitionValueForPersist(org.eclipse.persistence.internal.sessions.AbstractSession session,
java.lang.Object object,
ClassDescriptor descriptor)
INTERNAL: If persist should be partitioned, extra value from object. |
org.eclipse.persistence.internal.helper.DatabaseField |
getPartitionField()
PUBLIC: Return the database column or query parameter to partition queries by. |
java.lang.String |
getPartitionFieldName()
PUBLIC: Return the database column or query parameter to partition queries by. |
boolean |
getUnionUnpartitionableQueries()
PUBLIC: Return if queries that do not contain the partition field should be sent to every database and have the result unioned. |
void |
setPartitionField(org.eclipse.persistence.internal.helper.DatabaseField partitionField)
PUBLIC: Set the database column or query parameter to partition queries by. |
void |
setPartitionField(java.lang.String partitionField)
PUBLIC: Set the database column or query parameter to partition queries by. |
void |
setUnionUnpartitionableQueries(boolean unionUnpartitionableQueries)
PUBLIC: Set if queries that do not contain the partition field should be sent to every database and have the result unioned. |
Methods inherited from class org.eclipse.persistence.descriptors.partitioning.PartitioningPolicy |
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acquireAccessor, convertClassNamesToClasses, getAccessor, getConnectionsForQuery, getName, initialize, partitionPersist, 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 org.eclipse.persistence.internal.helper.DatabaseField partitionField
protected boolean unionUnpartitionableQueries
Constructor Detail |
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public FieldPartitioningPolicy()
public FieldPartitioningPolicy(java.lang.String partitionField)
public FieldPartitioningPolicy(java.lang.String partitionField, boolean unionUnpartitionableQueries)
Method Detail |
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public org.eclipse.persistence.internal.helper.DatabaseField getPartitionField()
public void setPartitionField(org.eclipse.persistence.internal.helper.DatabaseField partitionField)
public java.lang.String getPartitionFieldName()
public void setPartitionField(java.lang.String partitionField)
public boolean getUnionUnpartitionableQueries()
public void setUnionUnpartitionableQueries(boolean unionUnpartitionableQueries)
protected java.lang.Object extractPartitionValueForPersist(org.eclipse.persistence.internal.sessions.AbstractSession session, java.lang.Object object, ClassDescriptor descriptor)
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