/*
 * Copyright (C) 2023 Dremio
 *
 * 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 org.apache.iceberg.viewdepoc;

import java.util.List;
import org.apache.iceberg.Schema;

public interface ViewDefinition {
  Schema EMPTY_SCHEMA = new Schema();

  static ViewDefinition of(
      String sql, Schema schema, String sessionCatalog, List<String> sessionNamespace) {
    return new BaseViewDefinition(sql, schema, sessionCatalog, sessionNamespace);
  }

  /**
   * Returns the view query SQL text.
   *
   * @return the view query SQL text
   */
  String sql();

  /**
   * Returns the view query output schema.
   *
   * @return the view query output schema
   */
  Schema schema();

  /**
   * Returns the session catalog when the view is created.
   *
   * @return the session catalog
   */
  String sessionCatalog();

  /**
   * Returns the session namespace when the view is created.
   *
   * @return the session namespace
   */
  List<String> sessionNamespace();
}
