org.springframework.beans.factory.config
Class PreferencesPlaceholderConfigurer
java.lang.Object
   org.springframework.core.io.support.PropertiesLoaderSupport
org.springframework.core.io.support.PropertiesLoaderSupport
       org.springframework.beans.factory.config.PropertyResourceConfigurer
org.springframework.beans.factory.config.PropertyResourceConfigurer
           org.springframework.beans.factory.config.PropertyPlaceholderConfigurer
org.springframework.beans.factory.config.PropertyPlaceholderConfigurer
               org.springframework.beans.factory.config.PreferencesPlaceholderConfigurer
org.springframework.beans.factory.config.PreferencesPlaceholderConfigurer
- All Implemented Interfaces: 
- BeanFactoryAware, BeanNameAware, BeanFactoryPostProcessor, InitializingBean, Ordered, PriorityOrdered
- public class PreferencesPlaceholderConfigurer 
- extends PropertyPlaceholderConfigurer- implements InitializingBean
Subclass of PropertyPlaceholderConfigurer that supports JDK 1.4's
 Preferences API (java.util.prefs).
 
Tries to resolve placeholders as keys first in the user preferences,
 then in the system preferences, then in this configurer's properties.
 Thus, behaves like PropertyPlaceholderConfigurer if no corresponding
 preferences defined.
 
Supports custom paths for the system and user preferences trees. Also
 supports custom paths specified in placeholders ("myPath/myPlaceholderKey").
 Uses the respective root node if not specified.
- Since:
- 16.02.2004
- Author:
- Juergen Hoeller
- See Also:
- setSystemTreePath(java.lang.String),- setUserTreePath(java.lang.String),- Preferences
 
 
 
 
 
| Method Summary | 
|  void | afterPropertiesSet()This implementation eagerly fetches the Preferences instances
 for the required system and user tree nodes.
 | 
| protected  String | resolvePlaceholder(String placeholder,
                   Properties props)This implementation tries to resolve placeholders as keys first
 in the user preferences, then in the system preferences, then in
 the passed-in properties.
 | 
| protected  String | resolvePlaceholder(String path,
                   String key,
                   Preferences preferences)Resolve the given path and key against the given Preferences.
 | 
|  void | setSystemTreePath(String systemTreePath)Set the path in the system preferences tree to use for resolving
 placeholders.
 | 
|  void | setUserTreePath(String userTreePath)Set the path in the system preferences tree to use for resolving
 placeholders.
 | 
 
| Methods inherited from class org.springframework.beans.factory.config.PropertyPlaceholderConfigurer | 
| parseStringValue, processProperties, resolvePlaceholder, resolveSystemProperty, setBeanFactory, setBeanName, setIgnoreUnresolvablePlaceholders, setNullValue, setPlaceholderPrefix, setPlaceholderSuffix, setSearchSystemEnvironment, setSystemPropertiesMode, setSystemPropertiesModeName | 
 
 
 
| Methods inherited from class java.lang.Object | 
| clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait | 
 
PreferencesPlaceholderConfigurer
public PreferencesPlaceholderConfigurer()
setSystemTreePath
public void setSystemTreePath(String systemTreePath)
- Set the path in the system preferences tree to use for resolving
 placeholders. Default is the root node.
 
- 
 
- 
 
setUserTreePath
public void setUserTreePath(String userTreePath)
- Set the path in the system preferences tree to use for resolving
 placeholders. Default is the root node.
 
- 
 
- 
 
afterPropertiesSet
public void afterPropertiesSet()
- This implementation eagerly fetches the Preferences instances
 for the required system and user tree nodes.
 
- 
- Specified by:
- afterPropertiesSetin interface- InitializingBean
 
- 
 
resolvePlaceholder
protected String resolvePlaceholder(String placeholder,
                                    Properties props)
- This implementation tries to resolve placeholders as keys first
 in the user preferences, then in the system preferences, then in
 the passed-in properties.
 
- 
- Overrides:
- resolvePlaceholderin class- PropertyPlaceholderConfigurer
 
- 
- Parameters:
- placeholder- the placeholder to resolve
- props- the merged properties of this configurer
- Returns:
- the resolved value, of nullif none
- See Also:
- PropertyPlaceholderConfigurer.setSystemPropertiesMode(int)
 
resolvePlaceholder
protected String resolvePlaceholder(String path,
                                    String key,
                                    Preferences preferences)
- Resolve the given path and key against the given Preferences.
 
- 
 
- 
- Parameters:
- path- the preferences path (placeholder part before '/')
- key- the preferences key (placeholder part after '/')
- preferences- the Preferences to resolve against
- Returns:
- the value for the placeholder, or nullif none found
 
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