[英]Jooq binding for “timestamp with time zone” type in postgres
Jooq currently does not support JSR 310 types and support will not come until v3.8 . Jooq目前不支持JSR 310类型 , 直到v3.8才会支持 。
Using simple converters generally works, except for certain types, such as postgres' TIMESTAMP WITH TIME ZONE
, which requires a custom binding. 使用简单的转换器通常可以工作,除了某些类型,例如postgres'TIMESTAMP TIMESTAMP WITH TIME ZONE
,它需要自定义绑定。 So I have tried to write one but the generated XxxRecord
classes still use a Timestamp
data type for the TIMESTAMP WITH TIME ZONE
fields in my DB. 所以我尝试编写一个,但生成的XxxRecord
类仍然在我的数据库中TIMESTAMP WITH TIME ZONE
字段的Timestamp
数据类型。
What do I need to change in my code below to see postgres' TIMESTAMP WITH TIME ZONE
as an Instant
in jooq's generated classes? 在下面的代码中我需要更改什么才能在jooq生成的类中看到postgres'TIMESTAMP TIMESTAMP WITH TIME ZONE
作为Instant
?
public class TimestampConverter implements Converter<Timestamp, Instant> {
@Override public Instant from(Timestamp ts) {
return ts == null ? null : ts.toInstant();
}
@Override public Timestamp to(Instant instant) {
return instant == null ? null : Timestamp.from(instant);
}
@Override public Class<Timestamp> fromType() { return Timestamp.class; }
@Override public Class<Instant> toType() { return Instant.class; }
}
public class TimestampBinding implements Binding<Timestamp, Instant> {
private static final Converter<Timestamp, Instant> converter = new TimestampConverter();
private final DefaultBinding<Timestamp, Instant> delegate =
new DefaultBinding<> (converter());
@Override public Converter<Timestamp, Instant> converter() { return converter; }
@Override public void sql(BindingSQLContext<Instant> ctx) throws SQLException {
delegate.sql(ctx);
}
//etc. same for all other overriden methods.
}
<customType>
<name>java.time.Instant</name>
<type>java.time.Instant</type>
<binding>xxx.TimestampBinding</binding>
</customType>
...
<forcedType>
<name>java.time.Instant</name>
<types>timestamp with time zone</types>
</forcedType>
One way would be to escape the spaces in <types>
with backslashes, as follows: 一种方法是使用反斜杠转义<types>
的空格,如下所示:
<types>timestamp\ with\ time\ zone</types>
You can't just have regular spaces in <types>
because by default, org.jooq.util.AbstractDatabase
will parse regular expressions in COMMENTS mode which makes the created Pattern
object ignore whitespace in your regex. 您不能只在<types>
有常规空格,因为默认情况下, org.jooq.util.AbstractDatabase
将在COMMENTS模式下解析正则表达式,这会使创建的Pattern
对象忽略正则表达式中的空格 。 You could also do something like <types>timestamp.*zone</types>
, or specify your own <regexFlags>
. 您还可以执行类似<types>timestamp.*zone</types>
,或指定您自己的<regexFlags>
。
The following is the full Maven jooq-codegen-maven
plugin tag that works for me. 以下是适用于我的完整Maven jooq-codegen-maven
插件标记。 I also found the <binding>
to be unnecessary. 我还发现<binding>
是不必要的。
<plugin>
<groupId>org.jooq</groupId>
<artifactId>jooq-codegen-maven</artifactId>
<version>3.7.0</version>
<executions>
<execution>
<goals>
<goal>generate</goal>
</goals>
</execution>
</executions>
<configuration>
<jdbc>
<driver>org.postgresql.Driver</driver>
<url>jdbc:postgresql:postgres</url>
<user>postgres</user>
<password>mypass</password>
</jdbc>
<generator>
<database>
<customTypes>
<customType>
<name>Instant</name>
<type>java.time.Instant</type>
<converter>xxx.TimestampConverter</converter>
</customType>
</customTypes>
<forcedTypes>
<forcedType>
<name>Instant</name>
<types>timestamp\ with\ time\ zone</types>
</forcedType>
</forcedTypes>
<name>org.jooq.util.postgres.PostgresDatabase</name>
<includes>author</includes>
<excludes/>
<inputSchema>public</inputSchema>
</database>
<target>
<packageName>xxx.table</packageName>
<directory>target/generated-sources/jooq</directory>
</target>
</generator>
</configuration>
</plugin>
Jooq 3.11 seems to turn a TIMESTAMP WITH TIME ZONE
into an OffsetDateTime
when javaTimeTypes
is enabled, and it also complains about customTypes
being deprecated, so I wasn't able to get the other answers to work for me. Jooq 3.11似乎把一个TIMESTAMP WITH TIME ZONE
为OffsetDateTime
时javaTimeTypes
被启用,也抱怨customTypes
被弃用,所以我没能得到其他的答案为我工作。
Here's how I was able to get this to work, using the gradle jooq plugin: 以下是我使用gradle jooq插件实现此功能的方法:
// inside the jooq...generator.database of build.gradle:
forcedTypes {
forcedType {
userType = 'java.time.Instant'
converter = '''
org.jooq.Converter.ofNullable(
java.time.OffsetDateTime.class,
java.time.Instant.class,
o -> o.toInstant(),
i -> i.atOffset(java.time.ZoneOffset.UTC))
'''
types = 'timestamp\\ with\\ time\\ zone'
}
}
It should be pretty easy to turn this into XML for Maven or manual invocation of the code generator, as the gradle plugin's parameters exactly match the structure of the XML. 将它转换为Maven的XML或手动调用代码生成器应该非常容易,因为gradle插件的参数与XML的结构完全匹配。 Note that Groovy syntax requires the doubling of the backslashes in the types
pattern, so that would need to be adjusted if converting to XML. 请注意,Groovy语法要求在types
模式中加倍反斜杠,因此如果转换为XML则需要进行调整。
This uses an inline converter to turn the OffsetDateTime
that Jooq currently uses into an Instant
. 这使用内联转换器将Jooq当前使用的OffsetDateTime
转换为Instant
。 No external converter class is necessary. 无需外部转换器类。
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