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## com.hp.hpl.jena.reasoner.dig
Class DIGQueryDifferentFromTranslator

    java.lang.Object
      com.hp.hpl.jena.reasoner.dig.DIGQueryTranslator
          com.hp.hpl.jena.reasoner.dig.DIGQueryDifferentFromTranslator

    public class DIGQueryDifferentFromTranslator

extends DIGQueryTranslator

Translator for queries as to whether two ground individuals are different-from each other. This does not have a direct translation in DIG at the moment; instead we ask if the class expressions formed from the set of each single individual are disjoint.

Version:
  CVS $Id: DIGQueryDifferentFromTranslator.java,v 1.8 2008/01/02 12:07:11 andy_seaborne Exp $
Author:
  Ian Dickinson, HP Labs (email)

Field Summary

Fields inherited from class com.hp.hpl.jena.reasoner.dig.DIGQueryTranslator
`ALL`

Constructor Summary
`DIGQueryDifferentFromTranslator(java.lang.String predicate)` Construct a translator to test whether two individuals are different

Method Summary
`boolean` | `checkObject(Node object, DIGAdapter da, Model premises)` Additional test on the object of the incoming find pattern.
`boolean` | `checkSubject(Node subject, DIGAdapter da, Model premises)` Additional test on the subject of the incoming find pattern.
`org.w3c.dom.Document` | `translatePattern(TriplePattern pattern, DIGAdapter da)` Answer a query that will test difference between two individuals
`org.w3c.dom.Document` | `translatePattern(TriplePattern pattern, DIGAdapter da, Model premises)` Answer an XML document that presents the translation of the query into DIG query language, given that either the subject or object may be expressions defined by the statements in the premises model.
`ExtendedIterator` | `translateResponseHook(org.w3c.dom.Document response, TriplePattern query, DIGAdapter da)` Answer an iterator of triples that match the original find query.

Methods inherited from class com.hp.hpl.jena.reasoner.dig.DIGQueryTranslator
`checkPredicate, checkTriple, find, find, translateResponse, trigger`

Methods inherited from class java.lang.Object
`equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### DIGQueryDifferentFromTranslator

    public DIGQueryDifferentFromTranslator(java.lang.String predicate)

  Construct a translator to test whether two individuals are different

  Parameters:
    `predicate` - The predicate we are matching on

Method Detail

### translatePattern

    public org.w3c.dom.Document translatePattern(TriplePattern pattern,
                                                 DIGAdapter da)

  Answer a query that will test difference between two individuals

  Specified by:
    `translatePattern` in class `DIGQueryTranslator`

### translateResponseHook

    public ExtendedIterator translateResponseHook(org.w3c.dom.Document response,
                                                  TriplePattern query,
                                                  DIGAdapter da)

  Answer an iterator of triples that match the original find query.

### translatePattern

    public org.w3c.dom.Document translatePattern(TriplePattern pattern,
                                                 DIGAdapter da,
                                                 Model premises)

  Description copied from class: `DIGQueryTranslator`

  Answer an XML document that presents the translation of the query into DIG query language, given that either the subject or object may be expressions defined by the statements in the premises model.

  Specified by:
    `translatePattern` in class `DIGQueryTranslator`

### checkSubject

    public boolean checkSubject(Node subject,
                                DIGAdapter da,
                                Model premises)

  Description copied from class: `DIGQueryTranslator`

  Additional test on the subject of the incoming find pattern. Default is to always match

  Overrides:
    `checkSubject` in class `DIGQueryTranslator`
  Parameters:
    `subject` - The subject resource from the incoming pattern
    `da` - The current dig adapter
    `premises` - A model that conveys additional information about the premises of the query, which might assist the check to suceed or fail. By default it is ignored.
  Returns:
    True if this subject matches the trigger condition expressed by this translator instance

### checkObject

    public boolean checkObject(Node object,
                               DIGAdapter da,
                               Model premises)

  Description copied from class: `DIGQueryTranslator`

  Additional test on the object of the incoming find pattern. Default is to always match

  Overrides:
    `checkObject` in class `DIGQueryTranslator`
  Parameters:
    `object` - The object resource from the incoming pattern
    `da` - The current dig adapter
    `premises` - A model that conveys additional information about the premises of the query, which might assist the check to suceed or fail. By default it is ignored.
  Returns:
    True if this object matches the trigger condition expressed by this translator instance

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