/*
 * 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.kylin.source;

import java.util.List;

import org.apache.kylin.common.util.Pair;
import org.apache.kylin.metadata.model.ColumnDesc;
import org.apache.kylin.metadata.model.TableDesc;
import org.apache.kylin.metadata.model.TableExtDesc;

public interface ISourceMetadataExplorer {

    List<String> listDatabases() throws Exception;
    
    List<String> listTables(String database) throws Exception;
    
    Pair<TableDesc, TableExtDesc> loadTableMetadata(String database, String table, String prj) throws Exception;
    
    List<String> getRelatedKylinResources(TableDesc table);
    
    ColumnDesc[] evalQueryMetadata(String query);

    void validateSQL(String query) throws Exception;
}
