org.apache.openjpa.lib.conf
Class PluginValue

java.lang.Object
  extended by org.apache.openjpa.lib.conf.Value
      extended by org.apache.openjpa.lib.conf.ObjectValue
          extended by org.apache.openjpa.lib.conf.PluginValue
All Implemented Interfaces:
Cloneable
Direct Known Subclasses:
BrokerFactoryValue, BrokerValue, EntityManagerFactoryValue, ExecutorServiceValue, MappingFactoryValue, MappingRepositoryValue, MetaDataRepositoryValue, QueryCompilationCacheValue, RemoteCommitProviderValue, SeqValue

public class PluginValue
extends ObjectValue

A plugin Value consisting of plugin name and properties. Plugins should be specified in the form:
<plugin-name>(<prop1>=<val1>, ...)
Both the plugin name and prop list are optional, so that the following forms are also valid:
<plugin-name>
<prop1>=<val1> ... Defaults and aliases on plugin values apply only to the plugin name.

Author:
Abe White

Constructor Summary
PluginValue(String prop, boolean singleton)
           
 
Method Summary
 String getClassName()
          The plugin class name.
protected  String getInternalString()
          Return the internal string form of this value.
 String getProperties()
          The plugin properties.
 String getString()
          Return a stringified version of this value.
 Class getValueType()
          Returns the type of the property that this Value represents.
 Object instantiate(Class type, Configuration conf, boolean fatal)
          Instantiate the plugin as an instance of the given class.
 boolean isSingleton()
          Whether this value is a singleton.
protected  void objectChanged()
          Implement this method to synchronize internal data with the new object value.
 void set(Object obj, boolean derived)
          The internal value.
 void setClassName(String name)
          The plugin class name.
protected  void setInternalString(String str)
          Set this value from the given string.
 void setProperties(String props)
          The plugin properties.
 void setString(String str)
          Set this value from the given string.
 
Methods inherited from class org.apache.openjpa.lib.conf.ObjectValue
get, instantiate, newInstance, set, setInternalObject
 
Methods inherited from class org.apache.openjpa.lib.conf.Value
alias, alias, assertChangeable, clone, equals, getAliases, getDefault, getInstantiatingGetter, getListener, getLoadKey, getOriginalValue, getProperty, getScope, hashCode, isAliasListComprehensive, isDynamic, setAlias, setAlias, setAliases, setAliasListComprehensive, setDefault, setDynamic, setInstantiatingGetter, setListener, setLoadKey, setObject, setProperty, setScope, unalias, unalias, valueChanged
 
Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

PluginValue

public PluginValue(String prop,
                   boolean singleton)
Method Detail

isSingleton

public boolean isSingleton()
Whether this value is a singleton.


getClassName

public String getClassName()
The plugin class name.


setClassName

public void setClassName(String name)
The plugin class name.


getProperties

public String getProperties()
The plugin properties.


setProperties

public void setProperties(String props)
The plugin properties.


instantiate

public Object instantiate(Class type,
                          Configuration conf,
                          boolean fatal)
Instantiate the plugin as an instance of the given class.

Overrides:
instantiate in class ObjectValue

set

public void set(Object obj,
                boolean derived)
Description copied from class: ObjectValue
The internal value.

Overrides:
set in class ObjectValue
derived - if true, this value was derived from other properties

getString

public String getString()
Description copied from class: Value
Return a stringified version of this value. If the current value has a short alias key, the alias key is returned.

Overrides:
getString in class Value

setString

public void setString(String str)
Description copied from class: Value
Set this value from the given string. If the given string is null or empty and a default is defined, the default is used. If the given string(or default) is an alias key, it will be converted to the corresponding value internally.
If this Value is being set to a non-default value for the first time (as designated by originalString being null), then the value is remembered as original. This original value is used for equality and hashCode computation if this Value is dynamic.

Overrides:
setString in class Value

getValueType

public Class getValueType()
Description copied from class: Value
Returns the type of the property that this Value represents.

Overrides:
getValueType in class ObjectValue

objectChanged

protected void objectChanged()
Description copied from class: ObjectValue
Implement this method to synchronize internal data with the new object value.

Overrides:
objectChanged in class ObjectValue

getInternalString

protected String getInternalString()
Description copied from class: Value
Return the internal string form of this value.

Overrides:
getInternalString in class ObjectValue

setInternalString

protected void setInternalString(String str)
Description copied from class: Value
Set this value from the given string.

Overrides:
setInternalString in class ObjectValue


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