InitConsistentMaterializationContextHook.java

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

import org.apache.doris.catalog.Env;
import org.apache.doris.catalog.MTMV;
import org.apache.doris.catalog.TableIf;
import org.apache.doris.mtmv.BaseTableInfo;
import org.apache.doris.mtmv.MTMVUtil;
import org.apache.doris.nereids.CascadesContext;
import org.apache.doris.nereids.PlannerHook;

import com.google.common.annotations.VisibleForTesting;

import java.util.List;
import java.util.Set;
import java.util.stream.Collectors;

/**
 * If enable query rewrite with mv in dml, should init consistent materialization context after analyze
 */
public class InitConsistentMaterializationContextHook extends InitMaterializationContextHook implements PlannerHook {

    public static final InitConsistentMaterializationContextHook INSTANCE =
            new InitConsistentMaterializationContextHook();

    @VisibleForTesting
    @Override
    public void initMaterializationContext(CascadesContext cascadesContext) {
        if (!cascadesContext.getConnectContext().getSessionVariable().isEnableDmlMaterializedViewRewrite()) {
            return;
        }
        super.doInitMaterializationContext(cascadesContext);
    }

    protected Set<MTMV> getAvailableMTMVs(Set<TableIf> usedTables, CascadesContext cascadesContext) {
        List<BaseTableInfo> usedBaseTables =
                usedTables.stream().map(BaseTableInfo::new).collect(Collectors.toList());
        return Env.getCurrentEnv().getMtmvService().getRelationManager()
                .getAvailableMTMVs(usedBaseTables, cascadesContext.getConnectContext(),
                        true, ((connectContext, mtmv) -> {
                            return MTMVUtil.mtmvContainsExternalTable(mtmv) && (!connectContext.getSessionVariable()
                                    .isEnableDmlMaterializedViewRewriteWhenBaseTableUnawareness());
                        }));
    }
}