org.apache.calcite.sql.validate.IdentifierSnapshotNamespace Maven / Gradle / Ivy

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This module connects Table/SQL API and runtime. It is responsible for translating and optimizing a table program into a Flink pipeline. The module can access all resources that are required during pre-flight and runtime phase for planning.

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/*
 * 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.calcite.sql.validate;

import org.apache.calcite.schema.SchemaVersion;

/** A namespace for the statement with {@code FOR SYSTEM_TIME AS OF TIMESTAMP} clause. */
public class IdentifierSnapshotNamespace extends IdentifierNamespace {
    public IdentifierSnapshotNamespace(
            IdentifierNamespace ns, SchemaVersion schemaVersion, SqlValidatorScope parentScope) {
        super(
                (SqlValidatorImpl) ns.getValidator(),
                ns.getId(),
                ns.extendList,
                ns.enclosingNode,
                new SnapshotScope(parentScope, schemaVersion));
    }
}