Examples of org.teiid.query.sql.symbol.ElementSymbol

org.teiid.query.sql.symbol.ElementSymbol

This is a subclass of Symbol representing a single element. An ElementSymbol also is an expression and thus has a type. Element symbols have a variety of attributes that determine how they are displayed - a flag for displaying fully qualified and an optional vdb name.

The "isExternalReference" property indicates whether the element symbol refers to an element from a group outside the current command. Typically this is set to false. Common uses when this is set to true are for variables used within a command, correlated elements within a command, etc.

        List<AccessPattern> accessPatterns = (List<AccessPattern>)node.getProperty(NodeConstants.Info.ACCESS_PATTERNS);
        if (accessPatterns != null) {
          for (AccessPattern ap : accessPatterns) {
                Set<ElementSymbol> newElements = new HashSet<ElementSymbol>();
                for (Iterator elems = ap.getUnsatisfied().iterator(); elems.hasNext();) {
                    ElementSymbol symbol = (ElementSymbol)elems.next();
                    Expression mapped = convertExpression(symbol, symbolMap);
                    newElements.addAll(ElementCollectorVisitor.getElements(mapped, true));
                }
                ap.setUnsatisfied(newElements);
                Set<ElementSymbol> newHistory = new HashSet<ElementSymbol>();
                for (Iterator elems = ap.getCurrentElements().iterator(); elems.hasNext();) {
                    ElementSymbol symbol = (ElementSymbol)elems.next();
                    Expression mapped = convertExpression(symbol, symbolMap);
                    newHistory.addAll(ElementCollectorVisitor.getElements(mapped, true));
                }
                ap.addElementHistory(newHistory);
            }

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        List<ElementSymbol> elements = ResolverUtil.resolveElementsInGroup(oldGroup, metadata);
        
        for (ElementSymbol oldElementSymbol : elements) {
            Expression symbol = null;
            if (newGroup != null) {
                ElementSymbol newElementSymbol = oldElementSymbol.clone();
                newElementSymbol.setGroupSymbol(newGroup);
                symbol = newElementSymbol;
            } else {
                symbol = new Constant(null, oldElementSymbol.getType());
            }

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    /*+* Select a From db.g1 MAKENOTDEP, db.g2 MAKENOTDEP WHERE a = b */
    @Test public void testOptionMakeNotDepInline4(){
        GroupSymbol g1 = new GroupSymbol("db.g1"); //$NON-NLS-1$
        GroupSymbol g2 = new GroupSymbol("c", "db.g2"); //$NON-NLS-1$ //$NON-NLS-2$
        ElementSymbol a = new ElementSymbol("a");  //$NON-NLS-1$
        ElementSymbol b = new ElementSymbol("b");  //$NON-NLS-1$
        
        CompareCriteria crit = new CompareCriteria(a, CompareCriteria.EQ, b);
        
        From from = new From();
        FromClause clause = new UnaryFromClause(g1);

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    /*+* Select a From db.g1 JOIN db.g2 MAKEDEP ON a = b */
    @Test public void testOptionMakeDepInline1(){
        GroupSymbol g1 = new GroupSymbol("db.g1"); //$NON-NLS-1$
        GroupSymbol g2 = new GroupSymbol("db.g2"); //$NON-NLS-1$
        ElementSymbol a = new ElementSymbol("a");  //$NON-NLS-1$
        ElementSymbol b = new ElementSymbol("b");  //$NON-NLS-1$
        
        List crits = new ArrayList();
        crits.add(new CompareCriteria(a, CompareCriteria.EQ, b));
        JoinPredicate jp = new JoinPredicate(new UnaryFromClause(g1), new UnaryFromClause(g2), JoinType.JOIN_INNER, crits);
        jp.getRightClause().setMakeDep(true);

View Full Code Here

    
    /*+* Select a From db.g1 MAKEDEP JOIN db.g2 ON a = b */
    @Test public void testOptionMakeDepInline2(){
        GroupSymbol g1 = new GroupSymbol("db.g1"); //$NON-NLS-1$
        GroupSymbol g2 = new GroupSymbol("db.g2"); //$NON-NLS-1$
        ElementSymbol a = new ElementSymbol("a");  //$NON-NLS-1$
        ElementSymbol b = new ElementSymbol("b");  //$NON-NLS-1$
        
        List crits = new ArrayList();
        crits.add(new CompareCriteria(a, CompareCriteria.EQ, b));
        JoinPredicate jp = new JoinPredicate(new UnaryFromClause(g1), new UnaryFromClause(g2), JoinType.JOIN_INNER, crits);
        jp.getLeftClause().setMakeDep(true);

View Full Code Here

    /*+* Select a From (db.g1 MAKEDEP JOIN db.g2 ON a = b) LEFT OUTER JOIN db.g3 MAKEDEP ON a = c */
    @Test public void testOptionMakeDepInline3(){
        GroupSymbol g1 = new GroupSymbol("db.g1"); //$NON-NLS-1$
        GroupSymbol g2 = new GroupSymbol("db.g2"); //$NON-NLS-1$
        GroupSymbol g3 = new GroupSymbol("db.g3"); //$NON-NLS-1$
        ElementSymbol a = new ElementSymbol("a");  //$NON-NLS-1$
        ElementSymbol b = new ElementSymbol("b");  //$NON-NLS-1$
        ElementSymbol c = new ElementSymbol("c");  //$NON-NLS-1$
        
        List crits = new ArrayList();
        crits.add(new CompareCriteria(a, CompareCriteria.EQ, b));
        JoinPredicate jp = new JoinPredicate(new UnaryFromClause(g1), new UnaryFromClause(g2), JoinType.JOIN_INNER, crits);
        jp.getLeftClause().setMakeDep(true);

View Full Code Here


    /*+* Select a From db.g1 MAKEDEP, db.g2 MAKEDEP WHERE a = b */
    @Test public void testOptionMakeDepInline4(){
        GroupSymbol g1 = new GroupSymbol("db.g1"); //$NON-NLS-1$
        GroupSymbol g2 = new GroupSymbol("c", "db.g2"); //$NON-NLS-1$ //$NON-NLS-2$
        ElementSymbol a = new ElementSymbol("a");  //$NON-NLS-1$
        ElementSymbol b = new ElementSymbol("b");  //$NON-NLS-1$
        
        CompareCriteria crit = new CompareCriteria(a, CompareCriteria.EQ, b);
        
        From from = new From();
        FromClause clause = new UnaryFromClause(g1);

View Full Code Here

    
    /*+* Select a From db.g1 JOIN db.g2 MAKENOTDEP ON a = b */
    @Test public void testOptionMakeNotDepInline1(){
        GroupSymbol g1 = new GroupSymbol("db.g1"); //$NON-NLS-1$
        GroupSymbol g2 = new GroupSymbol("db.g2"); //$NON-NLS-1$
        ElementSymbol a = new ElementSymbol("a");  //$NON-NLS-1$
        ElementSymbol b = new ElementSymbol("b");  //$NON-NLS-1$
        
        List crits = new ArrayList();
        crits.add(new CompareCriteria(a, CompareCriteria.EQ, b));
        JoinPredicate jp = new JoinPredicate(new UnaryFromClause(g1), new UnaryFromClause(g2), JoinType.JOIN_INNER, crits);
        jp.getRightClause().setMakeNotDep(true);

View Full Code Here

    
    /*+* Select a From db.g1 MAKENOTDEP JOIN db.g2 ON a = b */
    @Test public void testOptionMakeNotDepInline2(){
        GroupSymbol g1 = new GroupSymbol("db.g1"); //$NON-NLS-1$
        GroupSymbol g2 = new GroupSymbol("db.g2"); //$NON-NLS-1$
        ElementSymbol a = new ElementSymbol("a");  //$NON-NLS-1$
        ElementSymbol b = new ElementSymbol("b");  //$NON-NLS-1$
        
        List crits = new ArrayList();
        crits.add(new CompareCriteria(a, CompareCriteria.EQ, b));
        JoinPredicate jp = new JoinPredicate(new UnaryFromClause(g1), new UnaryFromClause(g2), JoinType.JOIN_INNER, crits);
        jp.getLeftClause().setMakeNotDep(true);

View Full Code Here

    /*+* Select a From (db.g1 MAKENOTDEP JOIN db.g2 ON a = b) LEFT OUTER JOIN db.g3 MAKENOTDEP ON a = c */
    @Test public void testOptionMakeNotDepInline3(){
        GroupSymbol g1 = new GroupSymbol("db.g1"); //$NON-NLS-1$
        GroupSymbol g2 = new GroupSymbol("db.g2"); //$NON-NLS-1$
        GroupSymbol g3 = new GroupSymbol("db.g3"); //$NON-NLS-1$
        ElementSymbol a = new ElementSymbol("a");  //$NON-NLS-1$
        ElementSymbol b = new ElementSymbol("b");  //$NON-NLS-1$
        ElementSymbol c = new ElementSymbol("c");  //$NON-NLS-1$
        
        List crits = new ArrayList();
        crits.add(new CompareCriteria(a, CompareCriteria.EQ, b));
        JoinPredicate jp = new JoinPredicate(new UnaryFromClause(g1), new UnaryFromClause(g2), JoinType.JOIN_INNER, crits);
        jp.getLeftClause().setMakeNotDep(true);

View Full Code Here

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