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java.lang.Objectorg.apache.ojb.broker.util.sequence.AbstractSequenceManager
org.apache.ojb.broker.util.sequence.SequenceManagerNextValImpl
org.apache.ojb.broker.util.sequence.SequenceManagerSeqHiLoImpl
A High/Low database sequence based implementation.
See SequenceManagerNextValImpl
for more information.
Implementation configuration properties:
Property Key | Property Values |
grabSize | Integer entry determines the number of IDs allocated within the H/L sequence manager implementation. Default was '20'. |
autoNaming |
Default was 'true'. If set 'true' OJB try to build a
sequence name automatic if none found in field-descriptor
and set this generated name as sequence-name
in field-descriptor. If set 'false' OJB throws an exception
if none sequence name was found in field-descriptor.
|
Limitations:
Nested Class Summary | |
(package private) class |
SequenceManagerSeqHiLoImpl.HiLoEntry
|
Field Summary | |
protected int |
grabSize
|
static java.lang.String |
PROPERTY_GRAB_SIZE
|
Fields inherited from class org.apache.ojb.broker.util.sequence.AbstractSequenceManager |
PROPERTY_AUTO_NAMING |
Constructor Summary | |
SequenceManagerSeqHiLoImpl(PersistenceBroker broker)
|
Method Summary | |
protected long |
getUniqueLong(FieldDescriptor field)
returns a unique long value for class clazz and field fieldName. |
Methods inherited from class org.apache.ojb.broker.util.sequence.SequenceManagerNextValImpl |
buildNextSequence, createSequence, getUniqueId |
Methods inherited from class org.apache.ojb.broker.util.sequence.AbstractSequenceManager |
afterStore, calculateSequenceName, getBrokerForClass, getConfigurationProperties, getConfigurationProperty, getPlatform, getUniqueValue, setConfigurationProperties, setConfigurationProperty, setReferenceFKs, useAutoNaming |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
public static final java.lang.String PROPERTY_GRAB_SIZE
protected int grabSize
Constructor Detail |
public SequenceManagerSeqHiLoImpl(PersistenceBroker broker)
Method Detail |
protected long getUniqueLong(FieldDescriptor field) throws SequenceManagerException
SequenceManagerNextValImpl
getUniqueLong
in class SequenceManagerNextValImpl
SequenceManagerException
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