1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 package org.apache.shardingsphere.infra.executor.sql.execute.result.query;
19
20 import org.apache.shardingsphere.infra.executor.sql.execute.result.ExecuteResult;
21
22 import java.io.InputStream;
23 import java.io.Reader;
24 import java.sql.SQLException;
25 import java.util.Calendar;
26
27 /**
28 * Query result.
29 */
30 public interface QueryResult extends ExecuteResult, AutoCloseable {
31
32 /**
33 * Iterate next data.
34 *
35 * @return has next data
36 * @throws SQLException SQL exception
37 */
38 boolean next() throws SQLException;
39
40 /**
41 * Get data value.
42 *
43 * @param columnIndex column index
44 * @param type class type of data value
45 * @return data value
46 * @throws SQLException SQL exception
47 */
48 Object getValue(int columnIndex, Class<?> type) throws SQLException;
49
50 /**
51 * Get calendar value.
52 *
53 * @param columnIndex column index
54 * @param type class type of data value
55 * @param calendar calendar
56 * @return calendar value
57 * @throws SQLException SQL exception
58 */
59 Object getCalendarValue(int columnIndex, Class<?> type, Calendar calendar) throws SQLException;
60
61 /**
62 * Get input stream.
63 *
64 * @param columnIndex column index
65 * @param type class type of data value
66 * @return input stream
67 * @throws SQLException SQL exception
68 */
69 InputStream getInputStream(int columnIndex, String type) throws SQLException;
70
71 /**
72 * Get CharacterStream.
73 *
74 * @param columnIndex column index
75 * @return reader
76 * @throws SQLException SQL exception
77 */
78 Reader getCharacterStream(int columnIndex) throws SQLException;
79
80 /**
81 * Judge result set is null or not.
82 *
83 * @return result set is null or not
84 * @throws SQLException SQL exception
85 */
86 boolean wasNull() throws SQLException;
87
88 /**
89 * Get query result meta data.
90 *
91 * @return query result meta data
92 */
93 QueryResultMetaData getMetaData();
94 }