Examples of org.teiid.query.resolver.util.AccessPattern

org.teiid.query.resolver.util.AccessPattern
This class represents both virtual and physical access patterns. If a virtual access pattern is initially unsatisfied, it may be transformed by RuleMergeVirtual. In this case, the history of the access pattern will contain its previous definitions.

              Map.Entry<PlanNode, PlanNode> entry = joinSources.next();
                PlanNode joinSource = entry.getKey();
                
                Collection accessPatterns = (Collection)joinSource.getProperty(NodeConstants.Info.ACCESS_PATTERNS);
                for (Iterator i = accessPatterns.iterator(); i.hasNext();) {
                    AccessPattern ap = (AccessPattern)i.next();
                    
                    boolean foundGroups = true;
                    HashSet<GroupSymbol> allRequiredGroups = new HashSet<GroupSymbol>();
                    for (ElementSymbol symbol : ap.getUnsatisfied()) {
                        Set<Collection<GroupSymbol>> requiredGroupsSet = joinRegion.getDependentCriteriaElements().get(symbol);
                        boolean elementSatisfied = false;
                        if (requiredGroupsSet != null) {
                            for (Collection<GroupSymbol> requiredGroups : requiredGroupsSet) {
                                if (currentGroups.containsAll(requiredGroups)) {
                                    elementSatisfied = true;
                                    allRequiredGroups.addAll(requiredGroups);
                                    break;
                                }
                            }
                        }
                        if (!elementSatisfied) {
                            foundGroups = false;
                            break;
                        }
                    }
                    
                    if (!foundGroups) {
                        continue;
                    }
                    
                    joinSources.remove();
                    satisfiedAP = true;
                    joinSource.setProperty(NodeConstants.Info.ACCESS_PATTERN_USED, ap.clone());
                    joinSource.setProperty(NodeConstants.Info.REQUIRED_ACCESS_PATTERN_GROUPS, allRequiredGroups);
                    break;
                }
            }
        }

View Full Code Here

        if (accessPatterns == null) {
            return true;
        }
        SymbolMap symbolMap = (SymbolMap)sourceNode.getProperty(NodeConstants.Info.SYMBOL_MAP);
        for (Iterator i = accessPatterns.iterator(); i.hasNext();) {
            AccessPattern ap = (AccessPattern)i.next();
            for (Iterator elems = ap.getUnsatisfied().iterator(); elems.hasNext();) {
                ElementSymbol symbol = (ElementSymbol)elems.next();
                Expression mapped = convertExpression(symbol, symbolMap.asMap());
                if (ElementCollectorVisitor.getElements(mapped, true).isEmpty()) {
                    return false;
                }

View Full Code Here


public class TestAccessPattern extends TestCase {


    public void testOrdering() {
        
        AccessPattern ap1 = new AccessPattern(createElements(1));
        AccessPattern ap2 = new AccessPattern(createElements(2)); 
        
        List accessPatterns = new ArrayList();
        
        accessPatterns.add(ap2);
        accessPatterns.add(ap1);

View Full Code Here

        assertEquals(ap1, accessPatterns.get(0));
    }
    
    public void testClone() {


        AccessPattern ap2 = new AccessPattern(createElements(2));
        
        AccessPattern clone = (AccessPattern)ap2.clone();
        
        assertNotSame(ap2, clone);
        
        assertEquals(ap2.getUnsatisfied(), clone.getUnsatisfied());
    }

View Full Code Here

TOP

Related Classes of org.teiid.query.resolver.util.AccessPattern

org.teiid.query.optimizer.relational.rules.FrameUtil

org.teiid.query.optimizer.relational.rules.RulePlanJoins

org.teiid.query.resolver.TestAccessPattern

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.