org.apache.uima.collection.metadata
Interface CasProcessorFilter

All Superinterfaces:

Cloneable, MetaDataObject, Serializable, XMLizable

public interface CasProcessorFilter
extends MetaDataObject

Object containing a filter expression used by the CPE to route CAS's to CasProcessor. A CasProcessor can be configured in the CPE Descriptor to use filtering using an SQL-like WHERE clause: where featurespec [ and featurespec2 ...]. The featurespec can be one of these four forms and meanings:

• Feature Process CAS if the Feature is present (e.g. where Person)
• Feature! Process CAS if the Feature is not present (e.g. where Person!)
• Feature=value Process CAS if the Feature has this value( e.g. where Person=Bush)
• Feature!=value Process CAS if the Feature does not have this value (e.g. where Person!=Bush) The featurespecs are implicitly connected with and operators and precedence rules are currently not supported.

  Method Summary

  String	getFilterString() Returns a filter expression as String
  void	setFilterString(String aFilterString) Sets filter expression

  Methods inherited from interface org.apache.uima.resource.metadata.MetaDataObject

  clone, equals, getAttributeValue, getSourceUrl, getSourceUrlString, isModifiable, listAttributes, setAttributeValue, setSourceUrl

  Methods inherited from interface org.apache.uima.util.XMLizable

  buildFromXMLElement, buildFromXMLElement, toXML, toXML, toXML, toXML

  Method Detail

  setFilterString

  void setFilterString(String aFilterString)

  Sets filter expression

  Parameters:

  aFilterString - - expression

  getFilterString

  String getFilterString()

  Returns a filter expression as String

  Returns:

  - filter expression