Class PreferencesPlaceholderConfigurer
- java.lang.Object
- org.springframework.core.io.support.PropertiesLoaderSupport
- org.springframework.beans.factory.config.PropertyResourceConfigurer
- org.springframework.beans.factory.config.PlaceholderConfigurerSupport
- org.springframework.beans.factory.config.PropertyPlaceholderConfigurer
- org.springframework.beans.factory.config.PreferencesPlaceholderConfigurer
- All Implemented Interfaces:
Aware,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
Field Summary
Fields inherited from class org.springframework.beans.factory.config.PropertyPlaceholderConfigurer
SYSTEM_PROPERTIES_MODE_FALLBACK, SYSTEM_PROPERTIES_MODE_NEVER, SYSTEM_PROPERTIES_MODE_OVERRIDE
Fields inherited from class org.springframework.beans.factory.config.PlaceholderConfigurerSupport
DEFAULT_PLACEHOLDER_PREFIX, DEFAULT_PLACEHOLDER_SUFFIX, DEFAULT_VALUE_SEPARATOR, ignoreUnresolvablePlaceholders, nullValue, placeholderPrefix, placeholderSuffix, trimValues, valueSeparator
Fields inherited from class org.springframework.core.io.support.PropertiesLoaderSupport
localOverride, localProperties, logger
Fields inherited from interface org.springframework.core.Ordered
HIGHEST_PRECEDENCE, LOWEST_PRECEDENCE
Constructor Summary
Constructors Constructor Description PreferencesPlaceholderConfigurer()
Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description voidafterPropertiesSet()This implementation eagerly fetches the Preferences instances for the required system and user tree nodes.protected StringresolvePlaceholder(String path, String key, Preferences preferences)Resolve the given path and key against the given Preferences.protected StringresolvePlaceholder(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.voidsetSystemTreePath(String systemTreePath)Set the path in the system preferences tree to use for resolving placeholders.voidsetUserTreePath(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, setSearchSystemEnvironment, setSystemPropertiesMode, setSystemPropertiesModeName
Methods inherited from class org.springframework.beans.factory.config.PlaceholderConfigurerSupport
doProcessProperties, setBeanFactory, setBeanName, setIgnoreUnresolvablePlaceholders, setNullValue, setPlaceholderPrefix, setPlaceholderSuffix, setTrimValues, setValueSeparator
Methods inherited from class org.springframework.beans.factory.config.PropertyResourceConfigurer
convertProperties, convertProperty, convertPropertyValue, getOrder, postProcessBeanFactory, setOrder
Methods inherited from class org.springframework.core.io.support.PropertiesLoaderSupport
loadProperties, mergeProperties, setFileEncoding, setIgnoreResourceNotFound, setLocalOverride, setLocation, setLocations, setProperties, setPropertiesArray, setPropertiesPersister
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. 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 interfaceInitializingBean
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 classPropertyPlaceholderConfigurer- Parameters:
placeholder- the placeholder to resolveprops- 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