Examples of org.jboss.dna.graph.query.model.PropertyExistence

org.jboss.dna.graph.query.model.PropertyExistence
A constraint that evaluates to true only when a named property exists on a node.

                    return location.toString().equals(path);
                }
            };
        }
        if (constraint instanceof PropertyExistence) {
            PropertyExistence propertyExistance = (PropertyExistence)constraint;
            String selectorName = propertyExistance.getSelectorName().getName();
            final String propertyName = propertyExistance.getPropertyName();
            if (analyzer != null) {
                final int locationIndex = columns.getLocationIndex(selectorName);
                return new ConstraintChecker() {
                    public boolean satisfiesConstraints( Object[] tuple ) {
                        Location location = (Location)tuple[locationIndex];

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            SelectorName replacement = rewrittenSelectors.get(descendantNode.getSelectorName());
            if (replacement == null) return descendantNode;
            return new DescendantNode(replacement, descendantNode.getAncestorPath());
        }
        if (constraint instanceof PropertyExistence) {
            PropertyExistence existence = (PropertyExistence)constraint;
            SelectorName replacement = rewrittenSelectors.get(existence.getSelectorName());
            if (replacement == null) return existence;
            return new PropertyExistence(replacement, existence.getPropertyName());
        }
        if (constraint instanceof FullTextSearch) {
            FullTextSearch search = (FullTextSearch)constraint;
            SelectorName replacement = rewrittenSelectors.get(search.getSelectorName());
            if (replacement == null) return search;

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            SelectorName selector = mapping.getSingleMappedSelectorName();
            node.addSelector(selector);
            return new DescendantNode(selector, descendantNode.getAncestorPath());
        }
        if (constraint instanceof PropertyExistence) {
            PropertyExistence existence = (PropertyExistence)constraint;
            if (!mapping.getOriginalName().equals(existence.getSelectorName())) return existence;
            Column sourceColumn = mapping.getMappedColumn(existence.getPropertyName());
            if (sourceColumn == null) return existence;
            node.addSelector(sourceColumn.getSelectorName());
            return new PropertyExistence(sourceColumn.getSelectorName(), sourceColumn.getPropertyName());
        }
        if (constraint instanceof FullTextSearch) {
            FullTextSearch search = (FullTextSearch)constraint;
            if (!mapping.getOriginalName().equals(search.getSelectorName())) return search;
            Column sourceColumn = mapping.getMappedColumn(search.getPropertyName());

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         * @param propertyName the name of the property
         * @return the constraint builder that was used to create this clause; never null
         */
        public ConstraintBuilder hasProperty( String table,
                                              String propertyName ) {
            return setConstraint(new PropertyExistence(selector(table), propertyName));
        }

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                }
                selectorName = ((Selector)source).getName();
                propertyName = firstWord;
            }
            if (tokens.canConsume("IS", "NOT", "NULL")) {
                return new PropertyExistence(selectorName, propertyName);
            }
            tokens.consume("IS", "NULL");
            return new Not(new PropertyExistence(selectorName, propertyName));
        }
        return null;
    }

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Related Classes of org.jboss.dna.graph.query.model.PropertyExistence

org.jboss.dna.graph.query.parse.SqlQueryParser

org.jboss.dna.graph.query.plan.PlanUtil

org.jboss.dna.graph.query.process.SelectComponent

org.jboss.dna.graph.query.QueryBuilder$ConstraintBuilder

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