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This version is still in development and is not considered stable yet. For the latest stable version, please use Spring Framework 6.0.26! |
Appendix
XML Schemas
This part of the appendix lists XML schemas for data access, including the following:
The tx Schema
The tx tags deal with configuring all of those beans in Spring’s comprehensive support
for transactions. These tags are covered in the chapter entitled
Transaction Management.
We strongly encourage you to look at the 'spring-tx.xsd' file that ships with the
Spring distribution. This file contains the XML Schema for Spring’s transaction
configuration and covers all of the various elements in the tx namespace, including
attribute defaults and similar information. This file is documented inline, and, thus,
the information is not repeated here in the interests of adhering to the DRY (Don’t
Repeat Yourself) principle.
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In the interest of completeness, to use the elements in the tx schema, you need to have
the following preamble at the top of your Spring XML configuration file. The text in the
following snippet references the correct schema so that the tags in the tx namespace
are available to you:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:tx="http://www.springframework.org/schema/tx" (1)
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
https://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/tx
https://www.springframework.org/schema/tx/spring-tx.xsd (2)
http://www.springframework.org/schema/aop
https://www.springframework.org/schema/aop/spring-aop.xsd">
<!-- bean definitions here -->
</beans>| 1 | Declare usage of the tx namespace. |
| 2 | Specify the location (with other schema locations). |
Often, when you use the elements in the tx namespace, you are also using the
elements from the aop namespace (since the declarative transaction support in Spring is
implemented by using AOP). The preceding XML snippet contains the relevant lines needed
to reference the aop schema so that the elements in the aop namespace are available
to you.
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The jdbc Schema
The jdbc elements let you quickly configure an embedded database or initialize an
existing data source. These elements are documented in
Embedded Database Support and
Initializing a DataSource, respectively.
To use the elements in the jdbc schema, you need to have the following preamble at the
top of your Spring XML configuration file. The text in the following snippet references
the correct schema so that the elements in the jdbc namespace are available to you:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:jdbc="http://www.springframework.org/schema/jdbc" (1)
xsi:schemaLocation="
http://www.springframework.org/schema/beans
https://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/jdbc
https://www.springframework.org/schema/jdbc/spring-jdbc.xsd"> (2)
<!-- bean definitions here -->
</beans>| 1 | Declare usage of the jdbc namespace. |
| 2 | Specify the location (with other schema locations). |
