@Override public EnumerableLimit copy( RelTraitSet traitSet, List<RelNode> newInputs) { return new EnumerableLimit( getCluster(), traitSet, sole(newInputs), offset, fetch); }
@Override public EnumerableLimit copy( RelTraitSet traitSet, List<RelNode> newInputs) { return new EnumerableLimit( getCluster(), traitSet, sole(newInputs), offset, fetch); }
/** Creates an EnumerableLimit. */ public static EnumerableLimit create(final RelNode input, RexNode offset, RexNode fetch) { final RelOptCluster cluster = input.getCluster(); final RelMetadataQuery mq = cluster.getMetadataQuery(); final RelTraitSet traitSet = cluster.traitSetOf(EnumerableConvention.INSTANCE) .replaceIfs( RelCollationTraitDef.INSTANCE, () -> RelMdCollation.limit(mq, input)) .replaceIf(RelDistributionTraitDef.INSTANCE, () -> RelMdDistribution.limit(mq, input)); return new EnumerableLimit(cluster, traitSet, input, offset, fetch); }
/** Creates an EnumerableLimit. */ public static EnumerableLimit create(final RelNode input, RexNode offset, RexNode fetch) { final RelOptCluster cluster = input.getCluster(); final RelMetadataQuery mq = cluster.getMetadataQuery(); final RelTraitSet traitSet = cluster.traitSetOf(EnumerableConvention.INSTANCE) .replaceIfs( RelCollationTraitDef.INSTANCE, () -> RelMdCollation.limit(mq, input)) .replaceIf(RelDistributionTraitDef.INSTANCE, () -> RelMdDistribution.limit(mq, input)); return new EnumerableLimit(cluster, traitSet, input, offset, fetch); }
@Override public void onMatch(RelOptRuleCall call) { final Sort sort = call.rel(0); if (sort.offset == null && sort.fetch == null) { return; } final RelTraitSet traitSet = sort.getTraitSet().replace(EnumerableConvention.INSTANCE); RelNode input = sort.getInput(); if (!sort.getCollation().getFieldCollations().isEmpty()) { // Create a sort with the same sort key, but no offset or fetch. input = sort.copy( sort.getTraitSet(), input, sort.getCollation(), null, null); } RelNode x = convert( input, input.getTraitSet().replace(EnumerableConvention.INSTANCE)); call.transformTo( new EnumerableLimit( sort.getCluster(), traitSet, x, sort.offset, sort.fetch)); } }
@Override public void onMatch(RelOptRuleCall call) { final Sort sort = call.rel(0); if (sort.offset == null && sort.fetch == null) { return; } final RelTraitSet traitSet = sort.getTraitSet().replace(EnumerableConvention.INSTANCE); RelNode input = sort.getInput(); if (!sort.getCollation().getFieldCollations().isEmpty()) { // Create a sort with the same sort key, but no offset or fetch. input = sort.copy( sort.getTraitSet(), input, sort.getCollation(), null, null); } RelNode x = convert( input, input.getTraitSet().replace(EnumerableConvention.INSTANCE)); call.transformTo( new EnumerableLimit( sort.getCluster(), traitSet, x, sort.offset, sort.fetch)); } }