Examples with BeamUnnestRule org.apache.beam.sdk.extensions.sql.impl.rule.BeamUnnestRule used on opensource projects

Example 1 with BeamUnnestRule

use of org.apache.beam.sdk.extensions.sql.impl.rule.BeamUnnestRule in project beam by apache.

the class ZetaSQLQueryPlanner method modifyRuleSetsForZetaSql.

private static Collection<RuleSet> modifyRuleSetsForZetaSql(Collection<RuleSet> ruleSets, Collection<RelOptRule> calc) {
    ImmutableList.Builder<RuleSet> ret = ImmutableList.builder();
    for (RuleSet ruleSet : ruleSets) {
        ImmutableList.Builder<RelOptRule> bd = ImmutableList.builder();
        for (RelOptRule rule : ruleSet) {
            // requires the JoinCommuteRule, which doesn't work without struct flattening.
            if (rule instanceof JoinCommuteRule) {
                continue;
            } else if (rule instanceof FilterCalcMergeRule || rule instanceof ProjectCalcMergeRule) {
                // planning result eventually.
                continue;
            } else if (rule instanceof BeamCalcRule) {
                bd.addAll(calc);
            } else if (rule instanceof BeamUnnestRule) {
                bd.add(BeamZetaSqlUnnestRule.INSTANCE);
            } else if (rule instanceof BeamUncollectRule) {
                bd.add(BeamZetaSqlUncollectRule.INSTANCE);
            } else {
                bd.add(rule);
            }
        }
        ret.add(RuleSets.ofList(bd.build()));
    }
    return ret.build();
}