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This is a Databricks build of Trino's Hive plugin which includes support for HTTP based transport for it's Hive metastore thrift interface.

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/*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.trino.plugin.hive.util;

import io.trino.plugin.hive.SystemTableProvider;
import io.trino.spi.connector.ConnectorSession;
import io.trino.spi.connector.ConnectorTableMetadata;
import io.trino.spi.connector.ConnectorTransactionHandle;
import io.trino.spi.connector.RecordCursor;
import io.trino.spi.connector.SchemaTableName;
import io.trino.spi.connector.SystemTable;
import io.trino.spi.predicate.TupleDomain;

import java.util.Optional;
import java.util.Set;
import java.util.function.Function;

public final class SystemTables
{
    private SystemTables() {}

    public static Optional getSourceTableNameFromSystemTable(
            Set systemTableProviders,
            SchemaTableName tableName)
    {
        return systemTableProviders.stream()
                .map(provider -> provider.getSourceTableName(tableName))
                .filter(Optional::isPresent)
                .map(Optional::get)
                .findAny();
    }

    public static SystemTable createSystemTable(ConnectorTableMetadata metadata, Function, RecordCursor> cursor)
    {
        return new SystemTable()
        {
            @Override
            public Distribution getDistribution()
            {
                return Distribution.SINGLE_COORDINATOR;
            }

            @Override
            public ConnectorTableMetadata getTableMetadata()
            {
                return metadata;
            }

            @Override
            public RecordCursor cursor(ConnectorTransactionHandle transactionHandle, ConnectorSession session, TupleDomain constraint)
            {
                return cursor.apply(constraint);
            }
        };
    }
}