public JahiaEquiJoinMerger(
Join join,
Map<String, PropertyValue> columns,
OperandEvaluator evaluator,
QueryObjectModelFactory factory,
EquiJoinCondition condition)
throws RepositoryException {
super(join, columns, evaluator, factory, condition);
PropertyValue property1 =
factory.propertyValue(condition.getSelector1Name(), condition.getProperty1Name());
PropertyValue property2 =
factory.propertyValue(condition.getSelector2Name(), condition.getProperty2Name());
if (leftSelectors.contains(property1.getSelectorName())
&& rightSelectors.contains(property2.getSelectorName())) {
leftProperty = property1;
rightProperty = property2;
} else if (leftSelectors.contains(property2.getSelectorName())
&& rightSelectors.contains(property1.getSelectorName())) {
leftProperty = property2;
rightProperty = property1;
} else {
throw new RepositoryException("Invalid equi-join");
}
}
public List<Constraint> getRightJoinConstraintsWithTranslation(List<Row> leftRows)
throws RepositoryException {
Map<String, Literal> literals = new HashMap<String, Literal>();
for (Row leftRow : leftRows) {
for (Value value : evaluator.getValues(leftProperty, leftRow)) {
literals.put(value.getString(), factory.literal(value));
}
}
List<Constraint> constraints = new ArrayList<Constraint>(literals.size());
for (Literal literal : literals.values()) {
constraints.add(factory.comparison(rightProperty, JCR_OPERATOR_EQUAL_TO, literal));
constraints.add(
factory.comparison(
factory.propertyValue(rightProperty.getSelectorName(), "_PARENT"),
JCR_OPERATOR_EQUAL_TO,
literal));
}
return constraints;
}