org.apache.openjpa.jdbc.meta.strats

Class TimestampVersionStrategy

java.lang.Object

org.apache.openjpa.jdbc.meta.strats.AbstractStrategy

org.apache.openjpa.jdbc.meta.strats.AbstractVersionStrategy

org.apache.openjpa.jdbc.meta.strats.ColumnVersionStrategy

org.apache.openjpa.jdbc.meta.strats.TimestampVersionStrategy

All Implemented Interfaces:

java.io.Serializable, Strategy, VersionStrategy

Direct Known Subclasses:

NanoPrecisionTimestampVersionStrategy

public class TimestampVersionStrategy
extends ColumnVersionStrategy

Uses a timestamp for optimistic versioning.

Author:

Abe White

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	ALIAS

Fields inherited from class org.apache.openjpa.jdbc.meta.strats.AbstractVersionStrategy

vers

Constructor Summary

Constructors

Constructor and Description
TimestampVersionStrategy()

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.String	getAlias() Return the alias of this strategy.
java.util.Map	getBulkUpdateValues()
protected int	getJavaType() Return the code from JavaTypes for the version values this strategy uses.
protected java.lang.Object	nextVersion(java.lang.Object version) Return the next version given the current one, which may be null.

Methods inherited from class org.apache.openjpa.jdbc.meta.strats.ColumnVersionStrategy

checkVersion, compare, compare, compareVersion, delete, getColumnValue, getJavaType, insert, isSecondaryColumn, load, map, populateFromResult, select, update

Methods inherited from class org.apache.openjpa.jdbc.meta.strats.AbstractVersionStrategy

afterLoad, setVersion

Methods inherited from class org.apache.openjpa.jdbc.meta.strats.AbstractStrategy

customDelete, customInsert, customUpdate, initialize, isCustomDelete, isCustomInsert, isCustomUpdate

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.openjpa.jdbc.meta.Strategy

customDelete, customInsert, customUpdate, initialize, isCustomDelete, isCustomInsert, isCustomUpdate

Field Detail

ALIAS

public static final java.lang.String ALIAS

See Also:

Constant Field Values

Constructor Detail

TimestampVersionStrategy

public TimestampVersionStrategy()

Method Detail

getAlias

public java.lang.String getAlias()

Description copied from interface: Strategy

Return the alias of this strategy. For custom strategies, return the full class name.

Specified by:

getAlias in interface Strategy

Overrides:

getAlias in class AbstractStrategy

getJavaType

protected int getJavaType()

Description copied from class: ColumnVersionStrategy

Return the code from JavaTypes for the version values this strategy uses. This method is only used during mapping installation.

Specified by:

getJavaType in class ColumnVersionStrategy

nextVersion

protected java.lang.Object nextVersion(java.lang.Object version)

Description copied from class: ColumnVersionStrategy

Return the next version given the current one, which may be null.

Specified by:

nextVersion in class ColumnVersionStrategy

getBulkUpdateValues

public java.util.Map getBulkUpdateValues()

Specified by:

getBulkUpdateValues in interface VersionStrategy

Overrides:

getBulkUpdateValues in class AbstractVersionStrategy

Returns:

a Map specifying how to update each version column during a bulk update.