Constructor Detail

• FinderFromFile

  public FinderFromFile()

  See findLoader(org.apache.commons.digester3.Digester, java.lang.Class<?>, java.util.Properties).

• FinderFromFile

  public FinderFromFile(String filenameAttr)

  See findLoader(org.apache.commons.digester3.Digester, java.lang.Class<?>, java.util.Properties).

  Parameters:

  filenameAttr - the XML attribute that needs to be present on a plugin declaration in order to specify the file to load rules from.

Method Detail

• findLoader

  public RuleLoader findLoader(Digester d,
                      Class<?> pluginClass,
                      Properties p)
                        throws PluginException

  If there exists a property with the name specified in the constructor, then load that file, run it through the xmlrules module and return an object encapsulating those rules.

  If there is no matching property provided, then just return null.

  The returned object (when non-null) will add the selected rules to the digester whenever its addRules method is invoked.

  Specified by:

  findLoader in class RuleFinder

  Parameters:

  d - The digester instance where locating plugin classes

  pluginClass - The plugin Java class

  p - The properties object that holds any xml attributes the user may have specified on the plugin declaration in order to indicate how to locate the plugin rules.

  Returns:

  a source of digester rules for the specified plugin class.

  Throws:

  PluginException - if the algorithm finds a source of rules, but there is something invalid about that source.