org.springframework.beans.factory.config
Class PreferencesPlaceholderConfigurer

java.lang.Object
  org.springframework.beans.factory.config.PropertyResourceConfigurer
      org.springframework.beans.factory.config.PropertyPlaceholderConfigurer
          org.springframework.beans.factory.config.PreferencesPlaceholderConfigurer

All Implemented Interfaces:

BeanFactoryAware, BeanFactoryPostProcessor, BeanNameAware, InitializingBean, Ordered

public class PreferencesPlaceholderConfigurer

extends PropertyPlaceholderConfigurer

implements InitializingBean

Subclass of PropertyPlaceholderConfigurer that supports J2SE 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. Uses the respective root nodes if not specified.

Since:

16.02.2004

Author:

Juergen Hoeller

See Also:

setSystemTreePath(java.lang.String), setUserTreePath(java.lang.String), Preferences

Field Summary

Fields inherited from class org.springframework.beans.factory.config.PropertyPlaceholderConfigurer

DEFAULT_PLACEHOLDER_PREFIX, DEFAULT_PLACEHOLDER_SUFFIX, SYSTEM_PROPERTIES_MODE_FALLBACK, SYSTEM_PROPERTIES_MODE_NEVER, SYSTEM_PROPERTIES_MODE_OVERRIDE

Fields inherited from class org.springframework.beans.factory.config.PropertyResourceConfigurer

logger

Constructor Summary

PreferencesPlaceholderConfigurer()

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.
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

parseBeanDefinition, parseGenericArgumentValues, parseIndexedArgumentValues, parseList, parseMap, parsePropertyValues, parseSet, parseString, parseString, parseValue, processProperties, resolvePlaceholder, setBeanFactory, setBeanName, setIgnoreUnresolvablePlaceholders, setPlaceholderPrefix, setPlaceholderSuffix, setSystemPropertiesMode, setSystemPropertiesModeName

Methods inherited from class org.springframework.beans.factory.config.PropertyResourceConfigurer

convertProperties, convertPropertyValue, getOrder, postProcessBeanFactory, setFileEncoding, setIgnoreResourceNotFound, setLocation, setLocations, setOrder, setProperties, setPropertiesPersister

Methods inherited from class java.lang.Object

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

Constructor Detail

PreferencesPlaceholderConfigurer

public PreferencesPlaceholderConfigurer()

Method Detail

setSystemTreePath

public void setSystemTreePath(String systemTreePath)

Set the path in the system preferences tree to use for resolving placeholders. Uses the root node by default.

setUserTreePath

public void setUserTreePath(String userTreePath)

Set the path in the system preferences tree to use for resolving placeholders. Uses the root node by default.

afterPropertiesSet

public void afterPropertiesSet()

This implementation eagerly fetches the Preferences instances for the required system and user tree nodes.

Specified by:

afterPropertiesSet in 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:

resolvePlaceholder in class PropertyPlaceholderConfigurer

Parameters:

placeholder - the placeholder to resolve

props - the merged properties of this configurer

Returns:

the resolved value, of null if none

See Also:

PropertyPlaceholderConfigurer.setSystemPropertiesMode(int)