Examples with SelectExpression com.apple.foundationdb.record.query.plan.temp.expressions.SelectExpression used on opensource projects

Example 11 with SelectExpression

use of com.apple.foundationdb.record.query.plan.temp.expressions.SelectExpression in project fdb-record-layer by FoundationDB.

the class ValueIndexLikeExpansionVisitor method visitExpression.

@Nonnull
@Override
public GraphExpansion visitExpression(@Nonnull final NestingKeyExpression nestingKeyExpression) {
    final VisitorState state = getCurrentState();
    final List<String> fieldNamePrefix = state.getFieldNamePrefix();
    final CorrelationIdentifier baseAlias = state.getBaseAlias();
    final FieldKeyExpression parent = nestingKeyExpression.getParent();
    final KeyExpression child = nestingKeyExpression.getChild();
    switch(parent.getFanType()) {
        case None:
            List<String> newPrefix = ImmutableList.<String>builder().addAll(fieldNamePrefix).add(parent.getFieldName()).build();
            return pop(child.expand(push(state.withFieldNamePrefix(newPrefix))));
        case FanOut:
            // explode the parent field(s) also depending on the prefix
            final Quantifier childBase = parent.explodeField(baseAlias, fieldNamePrefix);
            // expand the children of the key expression and then unify them into an expansion of this expression
            final GraphExpansion.Sealed sealedChildExpansion = pop(child.expand(push(state.withBaseAlias(childBase.getAlias()).withFieldNamePrefix(ImmutableList.of())))).seal();
            final SelectExpression selectExpression = sealedChildExpansion.buildSelectWithBase(childBase);
            final Quantifier childQuantifier = Quantifier.forEach(GroupExpressionRef.of(selectExpression));
            return sealedChildExpansion.derivedWithQuantifier(childQuantifier);
        case Concatenate:
        default:
            throw new RecordCoreException("unsupported fan type");
    }
}

Example 12 with SelectExpression

use of com.apple.foundationdb.record.query.plan.temp.expressions.SelectExpression in project fdb-record-layer by FoundationDB.

the class NormalizePredicatesRule method onMatch.

@Override
public void onMatch(@Nonnull PlannerRuleCall call) {
    final PlannerBindings bindings = call.getBindings();
    final SelectExpression selectExpression = bindings.get(root);
    final Collection<? extends QueryPredicate> predicates = bindings.get(predicatesMatcher);
    final Collection<? extends Quantifier> quantifiers = bindings.get(innerQuantifiersMatcher);
    // create one big conjuncted predicate
    final QueryPredicate conjunctedPredicate = AndPredicate.and(predicates);
    final BooleanPredicateNormalizer cnfNormalizer = BooleanPredicateNormalizer.forConfiguration(BooleanPredicateNormalizer.Mode.CNF, call.getContext().getPlannerConfiguration());
    cnfNormalizer.normalize(conjunctedPredicate, false).ifPresent(cnfPredicate -> call.yield(call.ref(new SelectExpression(selectExpression.getResultValues(), quantifiers.stream().map(quantifier -> quantifier.toBuilder().build(quantifier.getRangesOver())).collect(ImmutableList.toImmutableList()), AndPredicate.conjuncts(cnfPredicate)))));
    final BooleanPredicateNormalizer dnfNormalizer = BooleanPredicateNormalizer.forConfiguration(BooleanPredicateNormalizer.Mode.DNF, call.getContext().getPlannerConfiguration());
    dnfNormalizer.normalize(conjunctedPredicate, false).ifPresent(dnfPredicate -> call.yield(call.ref(new SelectExpression(selectExpression.getResultValues(), quantifiers.stream().map(quantifier -> quantifier.toBuilder().build(quantifier.getRangesOver())).collect(ImmutableList.toImmutableList()), ImmutableList.of(dnfPredicate)))));
}