Examples with MaterializedViewCandidateExtractor com.facebook.presto.sql.analyzer.MaterializedViewCandidateExtractor used on opensource projects

Example 1 with MaterializedViewCandidateExtractor

use of com.facebook.presto.sql.analyzer.MaterializedViewCandidateExtractor in project presto by prestodb.

the class MaterializedViewOptimizationRewriteUtils method optimizeQueryUsingMaterializedView.

public static Query optimizeQueryUsingMaterializedView(Metadata metadata, Session session, SqlParser sqlParser, AccessControl accessControl, Query node) {
    MaterializedViewCandidateExtractor materializedViewCandidateExtractor = new MaterializedViewCandidateExtractor(session, metadata);
    materializedViewCandidateExtractor.process(node);
    Set<QualifiedObjectName> materializedViewCandidates = materializedViewCandidateExtractor.getMaterializedViewCandidates();
    // TODO: Refactor query optimization code https://github.com/prestodb/presto/issues/16759
    for (QualifiedObjectName candidate : materializedViewCandidates) {
        Query optimizedQuery = getQueryWithMaterializedViewOptimization(metadata, session, sqlParser, accessControl, node, candidate);
        if (node != optimizedQuery) {
            MaterializedViewStatus materializedViewStatus = metadata.getMaterializedViewStatus(session, candidate);
            if (materializedViewStatus.isFullyMaterialized() || materializedViewStatus.isPartiallyMaterialized()) {
                session.getRuntimeStats().addMetricValue(OPTIMIZED_WITH_MATERIALIZED_VIEW, 1);
                return optimizedQuery;
            }
        }
    }
    return node;
}