Examples of org.teiid.query.sql.visitor.ElementCollectorVisitor

org.teiid.query.sql.visitor.ElementCollectorVisitor

This visitor class will traverse a language object tree and collect all element symbol references it finds. It uses a collection to collect the elements in so different collections will give you different collection properties - for instance, using a Set will remove duplicates.

The easiest way to use this visitor is to call the static methods which create the visitor (and possibly the collection), run the visitor, and return the collection. The public visit() methods should NOT be called directly.

    }     
    
    static void markBindingsAsNonExternal(LanguageObject object,
      Collection<ElementSymbol> allBindings) {
      List<ElementSymbol> elements = new ArrayList<ElementSymbol>();
      ElementCollectorVisitor visitor = new ElementCollectorVisitor(elements);
        DeepPreOrderNavigator.doVisit(object, visitor);
        for (Iterator<ElementSymbol> i = elements.iterator(); i.hasNext();) {
          ElementSymbol elementSymbol = i.next();
      if (allBindings.contains(elementSymbol)) {
        elementSymbol.setIsExternalReference(false);

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      return set;
    }
    
    static List<ElementSymbol> getBindingsReferences(LanguageObject object, Collection<ElementSymbol> allBindings) {
      List<ElementSymbol> elements = new LinkedList<ElementSymbol>();
      ElementCollectorVisitor visitor = new ElementCollectorVisitor(elements);
        DeepPreOrderNavigator.doVisit(object, visitor);
        for (Iterator<ElementSymbol> i = elements.iterator(); i.hasNext();) {
          ElementSymbol elementSymbol = i.next();
      if (!elementSymbol.isExternalReference() || !allBindings.contains(elementSymbol)) {
        i.remove();

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Related Classes of org.teiid.query.sql.visitor.ElementCollectorVisitor

org.teiid.query.optimizer.xml.QueryUtil

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