/
HasTypeMapper.java
67 lines (59 loc) · 1.96 KB
/
HasTypeMapper.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
57
58
59
60
61
62
63
64
65
66
67
package com.speedment.runtime.config.trait;
import com.speedment.runtime.config.Document;
import com.speedment.runtime.config.exception.SpeedmentConfigException;
import static com.speedment.runtime.config.trait.HasTypeMapper.DATABASE_TYPE;
import static com.speedment.runtime.config.util.DocumentUtil.newNoSuchElementExceptionFor;
import java.util.Optional;
/**
* Trait for documents that have a {@code TypeMapper} specified.
*
* @author Emil Forslund
* @since 3.0.2
*/
public interface HasTypeMapper extends Document {
/**
* The attribute under which the name of the {@code TypeMapper} is stored in
* the configuration file.
*/
String TYPE_MAPPER = "typeMapper";
/**
* The attribute under which the database type is stored in the
* configuration file. This is used initially to determine the default
* {@code TypeMapper} to use.
*/
String DATABASE_TYPE = "databaseType";
/**
* Returns the name of the mapper class that will be used to generate a java
* representation of the database types.
*
* @return the mapper class
*/
default Optional<String> getTypeMapper() {
return getAsString(TYPE_MAPPER);
}
/**
* Returns the name of the class that represents the database type.
*
* @return the database type class
*/
default String getDatabaseType() {
return getAsString(DATABASE_TYPE)
.orElseThrow(newNoSuchElementExceptionFor(this, DATABASE_TYPE));
}
/**
* Returns the class that represents the database type.
*
* @return the database type
*/
default Class<?> findDatabaseType() {
final String name = getDatabaseType();
try {
return Class.forName(name);
} catch (final ClassNotFoundException ex) {
throw new SpeedmentConfigException(
"Could not find database type: '" + name + "'.",
ex
);
}
}
}