modules/sql-engine/src/main/java/org/apache/ignite/internal/sql/engine/schema/SqlSchemaManager.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.ignite.internal.sql.engine.schema;

import java.util.UUID;
import org.apache.calcite.schema.SchemaPlus;
import org.jetbrains.annotations.Nullable;

/**
 * SchemaHolder interface.
 * TODO Documentation https://issues.apache.org/jira/browse/IGNITE-15859
 */
public interface SqlSchemaManager {
    /**
     * Returns a required schema if specified, or default schema otherwise.
     */
    SchemaPlus schema(@Nullable String schema);

    /**
     * Returns a table by given id.
     *
     * @param id An id of required table.
     * @param ver Minimal required version.
     *
     * @return The table.
     */
    IgniteTable tableById(UUID id, int ver);
}