Class PropertyOverrideConfigurer

All Implemented Interfaces:
BeanFactoryPostProcessor, Ordered, PriorityOrdered

public class PropertyOverrideConfigurer extends PropertyResourceConfigurer
Property resource configurer that overrides bean property values in an application context definition. It pushes values from a properties file into bean definitions.

Configuration lines are expected to be of the following form:
Example properties file:
In contrast to PropertyPlaceholderConfigurer, the original definition can have default values or no values at all for such bean properties. If an overriding properties file does not have an entry for a certain bean property, the default context definition is used.

Note that the context definition is not aware of being overridden; so this is not immediately obvious when looking at the XML definition file. Furthermore, note that specified override values are always literal values; they are not translated into bean references. This also applies when the original value in the XML bean definition specifies a bean reference.

In case of multiple PropertyOverrideConfigurers that define different values for the same bean property, the last one will win (due to the overriding mechanism).

Property values can be converted after reading them in, through overriding the convertPropertyValue method. For example, encrypted values can be detected and decrypted accordingly before processing them.

Juergen Hoeller, Rod Johnson
See Also:
  • Field Details


      public static final String DEFAULT_BEAN_NAME_SEPARATOR
      The default bean name separator.
      See Also:
  • Constructor Details

    • PropertyOverrideConfigurer

      public PropertyOverrideConfigurer()
  • Method Details

    • setBeanNameSeparator

      public void setBeanNameSeparator(String beanNameSeparator)
      Set the separator to expect between bean name and property path. Default is a dot (".").
    • setIgnoreInvalidKeys

      public void setIgnoreInvalidKeys(boolean ignoreInvalidKeys)
      Set whether to ignore invalid keys. Default is "false".

      If you ignore invalid keys, keys that do not follow the '' format (or refer to invalid bean names or properties) will just be logged at debug level. This allows one to have arbitrary other keys in a properties file.

    • processProperties

      protected void processProperties(ConfigurableListableBeanFactory beanFactory, Properties props) throws BeansException
      Description copied from class: PropertyResourceConfigurer
      Apply the given Properties to the given BeanFactory.
      Specified by:
      processProperties in class PropertyResourceConfigurer
      beanFactory - the BeanFactory used by the application context
      props - the Properties to apply
      BeansException - in case of errors
    • processKey

      protected void processKey(ConfigurableListableBeanFactory factory, String key, String value) throws BeansException
      Process the given key as '' entry.
    • applyPropertyValue

      protected void applyPropertyValue(ConfigurableListableBeanFactory factory, String beanName, String property, String value)
      Apply the given property value to the corresponding bean.
    • hasPropertyOverridesFor

      public boolean hasPropertyOverridesFor(String beanName)
      Were there overrides for this bean? Only valid after processing has occurred at least once.
      beanName - name of the bean to query status for
      whether there were property overrides for the named bean