org.apache.openjpa.conf
Class SpecificationPlugin

java.lang.Object
  org.apache.openjpa.lib.conf.Value
      org.apache.openjpa.lib.conf.ObjectValue
          org.apache.openjpa.conf.SpecificationPlugin

All Implemented Interfaces:

Cloneable, ValueListener

public class SpecificationPlugin
extends ObjectValue
implements ValueListener

A plug-in for Specification that enforces certain overwriting rules.

Author:

Pinaki Poddar

Field Summary

protected static Localizer

_loc

Fields inherited from class org.apache.openjpa.lib.conf.Value

INVISIBLE

Constructor Summary

SpecificationPlugin(Configuration conf, String prop)

Method Summary

Class<?>	getValueType() Returns the type of the property that this Value represents.
void	set(Object obj) Set a value from the given object after validating.
void	setString(String str) Set a value from the given String after validating.
protected void	validateOverwrite(Specification newSpec) Validates if the given Specification can overwrite the current Specification.
void	valueChanged(Value value) Callback used by Value objects to notify listener of change.

Methods inherited from class org.apache.openjpa.lib.conf.ObjectValue

configure, configure, get, getInternalString, instantiate, instantiate, newInstance, objectChanged, set, setInternalObject, setInternalString

Methods inherited from class org.apache.openjpa.lib.conf.Value

addEquivalentKey, addListener, alias, alias, assertChangeable, clone, equals, getAliases, getDefault, getEquivalentKeys, getInstantiatingGetter, getListeners, getLoadKey, getOriginalValue, getProperty, getPropertyKeys, getScope, getString, hashCode, hide, isAliasListComprehensive, isDynamic, isHidden, isPrivate, makePrivate, matches, removeListener, setAlias, setAlias, setAliases, setAliasListComprehensive, setDefault, setDynamic, setInstantiatingGetter, setLoadKey, setObject, setProperty, setScope, toString, unalias, unalias, valueChanged

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

_loc

protected static final Localizer _loc

Constructor Detail

SpecificationPlugin

public SpecificationPlugin(Configuration conf,
                           String prop)

Method Detail

getValueType

public Class<?> getValueType()

Description copied from class: Value

Returns the type of the property that this Value represents.

Overrides:

getValueType in class ObjectValue

setString

public void setString(String str)

Set a value from the given String after validating.

Overrides:

setString in class Value

Parameters:

str - can be null to set the Specification to null. If non-null, then the String must be in Specification format

See Also:

Specification#create(String)

set

public void set(Object obj)

Set a value from the given object after validating.

Overrides:

set in class ObjectValue

Parameters:

obj - can be null to set the Specification to null.

validateOverwrite

protected void validateOverwrite(Specification newSpec)

Validates if the given Specification can overwrite the current Specification. If the given Specification is not same as the current one, then it is valid to overwrite. If the given Specification is same as the current Specification then it must have a major version number equal or less than the current one.

Throws:

fatal - UserException if the given Specification is same as the current Specification but has a higher major version.

See Also:

Specification.equals(Object)

valueChanged

public void valueChanged(Value value)

Description copied from interface: ValueListener

Callback used by Value objects to notify listener of change.

Specified by:

valueChanged in interface ValueListener