fe/fe-core/src/main/java/org/apache/doris/nereids/rules/exploration/mv/MaterializedViewOnlyJoinRule.java

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package org.apache.doris.nereids.rules.exploration.mv;

import org.apache.doris.nereids.rules.Rule;
import org.apache.doris.nereids.rules.RuleType;
import org.apache.doris.nereids.trees.plans.Plan;
import org.apache.doris.nereids.trees.plans.logical.LogicalJoin;
import org.apache.doris.nereids.trees.plans.logical.LogicalPlan;

import com.google.common.collect.ImmutableList;

import java.util.List;

/**
 * This is responsible for join  pattern such as only join
 */
public class MaterializedViewOnlyJoinRule extends AbstractMaterializedViewJoinRule {

    public static final MaterializedViewOnlyJoinRule INSTANCE = new MaterializedViewOnlyJoinRule();

    @Override
    public List<Rule> buildRules() {
        return ImmutableList.of(logicalJoin(any().when(LogicalPlan.class::isInstance),
                any().when(LogicalPlan.class::isInstance)).thenApplyMultiNoThrow(ctx -> {
                    LogicalJoin<Plan, Plan> root = ctx.root;
                    return rewrite(root, ctx.cascadesContext);
                }).toRule(RuleType.MATERIALIZED_VIEW_ONLY_JOIN));
    }
}