| /* |
| * * |
| * * 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 |
| * * <p> |
| * * http://www.apache.org/licenses/LICENSE-2.0 |
| * * <p> |
| * * 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.storm.sql.runtime; |
| |
| import java.net.URI; |
| import java.util.List; |
| import java.util.Map; |
| |
| public interface DataSourcesProvider { |
| /** |
| * @return the scheme of the data source |
| */ |
| String scheme(); |
| |
| /** |
| * Construct a new data source. |
| * @param uri The URI that specifies the data source. The format of the URI |
| * is fully customizable. |
| * @param inputFormatClass the name of the class that deserializes data. |
| * It is null when unspecified. |
| * @param outputFormatClass the name of the class that serializes data. It |
| * is null when unspecified. |
| * @param fields The name of the fields and the schema of the table. |
| */ |
| DataSource construct( |
| URI uri, String inputFormatClass, String outputFormatClass, |
| List<FieldInfo> fields); |
| |
| ISqlTridentDataSource constructTrident( |
| URI uri, String inputFormatClass, String outputFormatClass, |
| List<FieldInfo> fields); |
| } |