/
MapEntityRowMapper.java
56 lines (48 loc) · 1.97 KB
/
MapEntityRowMapper.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
/*
* Copyright 2017-2020 the original author or authors.
*
* 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
*
* https://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.springframework.data.jdbc.core.convert;
import lombok.RequiredArgsConstructor;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.HashMap;
import java.util.Map;
import org.springframework.data.relational.core.mapping.PersistentPropertyPathExtension;
import org.springframework.data.relational.domain.Identifier;
import org.springframework.jdbc.core.RowMapper;
import org.springframework.lang.NonNull;
/**
* A {@link RowMapper} that maps a row to a {@link Map.Entry} so an {@link Iterable} of those can be converted to a
* {@link Map} using an {@link IterableOfEntryToMapConverter}. Creation of the {@literal value} part of the resulting
* {@link Map.Entry} is delegated to a {@link RowMapper} provided in the constructor.
*
* @author Jens Schauder
*/
@RequiredArgsConstructor
class MapEntityRowMapper<T> implements RowMapper<Map.Entry<Object, T>> {
private final PersistentPropertyPathExtension path;
private final JdbcConverter converter;
private final Identifier identifier;
private final String keyColumn;
@NonNull
@Override
public Map.Entry<Object, T> mapRow(ResultSet rs, int rowNum) throws SQLException {
Object key = rs.getObject(keyColumn);
return new HashMap.SimpleEntry<>(key, mapEntity(rs, key));
}
private T mapEntity(ResultSet resultSet, Object key) {
return converter.mapRow(path, resultSet, identifier, key);
}
}