Examples with MutableRel org.apache.calcite.rel.mutable.MutableRel used on opensource projects

Example 6 with MutableRel

use of org.apache.calcite.rel.mutable.MutableRel in project calcite by apache.

the class SubstitutionVisitor method matchRecurse.

private UnifyResult matchRecurse(MutableRel target) {
    // not called
    assert false;
    final List<MutableRel> targetInputs = target.getInputs();
    MutableRel queryParent = null;
    for (MutableRel targetInput : targetInputs) {
        UnifyResult unifyResult = matchRecurse(targetInput);
        if (unifyResult == null) {
            return null;
        }
        queryParent = unifyResult.call.query.replaceInParent(unifyResult.result);
    }
    if (targetInputs.isEmpty()) {
        for (MutableRel queryLeaf : queryLeaves) {
            for (UnifyRule rule : applicableRules(queryLeaf, target)) {
                final UnifyResult x = apply(rule, queryLeaf, target);
                if (x != null) {
                    if (DEBUG) {
                        System.out.println("Rule: " + rule + "\nQuery:\n" + queryParent + (x.call.query != queryParent ? "\nQuery (original):\n" + queryParent : "") + "\nTarget:\n" + target.deep() + "\nResult:\n" + x.result.deep() + "\n");
                    }
                    return x;
                }
            }
        }
    } else {
        assert queryParent != null;
        for (UnifyRule rule : applicableRules(queryParent, target)) {
            final UnifyResult x = apply(rule, queryParent, target);
            if (x != null) {
                if (DEBUG) {
                    System.out.println("Rule: " + rule + "\nQuery:\n" + queryParent.deep() + (x.call.query != queryParent ? "\nQuery (original):\n" + queryParent.toString() : "") + "\nTarget:\n" + target.deep() + "\nResult:\n" + x.result.deep() + "\n");
                }
                return x;
            }
        }
    }
    if (DEBUG) {
        System.out.println("Unify failed:" + "\nQuery:\n" + queryParent.toString() + "\nTarget:\n" + target.toString() + "\n");
    }
    return null;
}