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Java Source Code / Java Documentation » Database ORM » db ojb » org.apache.ojb.broker.util.sequence

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

org.apache.ojb.broker.util.sequence .AbstractSequenceManager

org.apache.ojb.broker.util.sequence .SequenceManagerNextValImpl

org.apache.ojb.broker.util.sequence .SequenceManagerSeqHiLoImpl

SequenceManagerSeqHiLoImpl

public class SequenceManagerSeqHiLoImpl extends SequenceManagerNextValImpl (Code)

A High/Low database sequence based implementation. See org.apache.ojb.broker.util.sequence.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:

do not use when other applications use the database based sequence ditto

author:
Armin Waibel
version:
$Id: SequenceManagerSeqHiLoImpl.java,v 1.9.2.1 2005/12/21 22:28:41 tomdz Exp $

Inner Class :class HiLoEntry

Field Summary
final public static String	PROPERTY_GRAB_SIZE
protected int	grabSize

Constructor Summary
public	SequenceManagerSeqHiLoImpl(PersistenceBroker broker)

Method Summary
protected long	getUniqueLong(FieldDescriptor field)

Field Detail

PROPERTY_GRAB_SIZE
final public static String PROPERTY_GRAB_SIZE(Code)

grabSize
protected int grabSize(Code)

Constructor Detail

SequenceManagerSeqHiLoImpl
public SequenceManagerSeqHiLoImpl(PersistenceBroker broker)(Code)

Method Detail

getUniqueLong
protected long getUniqueLong(FieldDescriptor field) throws SequenceManagerException(Code)

Methods inherited from org.apache.ojb.broker.util.sequence.SequenceManagerNextValImpl

protected long buildNextSequence(ClassDescriptor cld, String sequenceName) throws Exception(Code)(Java Doc)
protected void createSequence(ClassDescriptor cld, String sequenceName) throws Exception(Code)(Java Doc)
protected int getUniqueId(FieldDescriptor field) throws SequenceManagerException(Code)(Java Doc)
protected long getUniqueLong(FieldDescriptor field) throws SequenceManagerException(Code)(Java Doc)

Fields inherited from org.apache.ojb.broker.util.sequence.AbstractSequenceManager

final protected static String GLOBAL_SEQUENCE_NAME(Code)(Java Doc)
final public static String PROPERTY_AUTO_NAMING(Code)(Java Doc)

Methods inherited from org.apache.ojb.broker.util.sequence.AbstractSequenceManager

public void afterStore(JdbcAccess dbAccess, ClassDescriptor cld, Object obj) throws SequenceManagerException(Code)(Java Doc)
public String calculateSequenceName(FieldDescriptor field) throws SequenceManagerException(Code)(Java Doc)
public PersistenceBroker getBrokerForClass()(Code)(Java Doc)
public Properties getConfigurationProperties()(Code)(Java Doc)
public String getConfigurationProperty(String key, String defaultValue)(Code)(Java Doc)
public Platform getPlatform()(Code)(Java Doc)
abstract protected long getUniqueLong(FieldDescriptor field) throws SequenceManagerException(Code)(Java Doc)
public Object getUniqueValue(FieldDescriptor field) throws SequenceManagerException(Code)(Java Doc)
public void setConfigurationProperties(Properties prop)(Code)(Java Doc)
public void setConfigurationProperty(String key, String value)(Code)(Java Doc)
public void setReferenceFKs(Object obj, ClassDescriptor cld) throws SequenceManagerException(Code)(Java Doc)
public boolean useAutoNaming()(Code)(Java Doc)

Methods inherited from java.lang.Object

native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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