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Add minimal doc for JSR 330 support. 

git-svn-id: https://src.springframework.org/svn/spring-framework/trunk@2003 50f2f4bb-b051-0410-bef5-90022cba6387
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Mark Pollack 17 years ago
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2 changed files with 117 additions and 59 deletions
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  1. 135
      spring-framework-reference/src/beans.xml
  2. 41
      spring-framework-reference/src/new-in-3.xml

135
spring-framework-reference/src/beans.xml
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@ -1077,11 +1077,11 @@ public class ExampleBean {
properties themselves are not set until the bean <emphasis>is actually properties themselves are not set until the bean <emphasis>is actually
created</emphasis>. Beans that are singleton-scoped and set to be created</emphasis>. Beans that are singleton-scoped and set to be
pre-instantiated (the default) are created when the container is pre-instantiated (the default) are created when the container is
created. Scopes are defined in <xref created. Scopes are defined in <xref linkend="beans-factory-scopes" />
linkend="beans-factory-scopes" /> Otherwise, the bean is created only Otherwise, the bean is created only when it is requested. Creation of
when it is requested. Creation of a bean potentially causes a graph of a bean potentially causes a graph of beans to be created, as the
beans to be created, as the bean's dependencies and its dependencies' bean's dependencies and its dependencies' dependencies (and so on) are
dependencies (and so on) are created and assigned.</para> created and assigned.</para>
<sidebar> <sidebar>
<title>Circular dependencies</title> <title>Circular dependencies</title>
@ -2232,7 +2232,8 @@ support=support@example.co.uk</programlisting>
<para>If you use Java 5 and thus have access to source-level <para>If you use Java 5 and thus have access to source-level
annotations, you may find <literal><xref annotations, you may find <literal><xref
linkend="metadata-annotations-required" /></literal> to be of interest.</para> linkend="metadata-annotations-required" /></literal> to be of
interest.</para>
</section> </section>
<section id="beans-factory-method-injection"> <section id="beans-factory-method-injection">
@ -2566,13 +2567,16 @@ public class ReplacementComputeValue implements MethodReplacer {
</tbody> </tbody>
</tgroup> </tgroup>
</table> </table>
<note> <note>
<title>Thread-scoped beans</title> <title>Thread-scoped beans</title>
<para>As of Spring 3.0, a <emphasis>thread scope</emphasis> is available, but is
not registered by default. For more information, see the documentation for <para>As of Spring 3.0, a <emphasis>thread scope</emphasis> is
<ulink url="http://static.springsource.org/spring/docs/3.0.x/javadoc-api/org/springframework/context/support/SimpleThreadScope.html">SimpleThreadScope</ulink>. available, but is not registered by default. For more information, see
the documentation for <ulink
url="http://static.springsource.org/spring/docs/3.0.x/javadoc-api/org/springframework/context/support/SimpleThreadScope.html">SimpleThreadScope</ulink>.
For instructions on how to register this or any other custom scope, see For instructions on how to register this or any other custom scope, see
<xref linkend="beans-factory-scopes-custom-using"/>.</para> <xref linkend="beans-factory-scopes-custom-using" />.</para>
</note> </note>
<section id="beans-factory-scopes-singleton"> <section id="beans-factory-scopes-singleton">
@ -3111,10 +3115,12 @@ public class ReplacementComputeValue implements MethodReplacer {
<para>Suppose that you write your custom <para>Suppose that you write your custom
<interfacename>Scope</interfacename> implementation, and then register <interfacename>Scope</interfacename> implementation, and then register
it as below.</para> it as below.</para>
<note> <note>
<para>The example below uses <literal>SimpleThreadScope</literal> <para>The example below uses <literal>SimpleThreadScope</literal>
which is included with Spring, but not registered by default. The instructions which is included with Spring, but not registered by default. The
would be the same for your own custom <literal>Scope</literal> implementations.</para> instructions would be the same for your own custom
<literal>Scope</literal> implementations.</para>
</note> </note>
<programlisting language="java"> <programlisting language="java">
@ -3528,8 +3534,7 @@ public final class Boot {
<interfacename>BeanFactory</interfacename> type if the field, <interfacename>BeanFactory</interfacename> type if the field,
constructor, or method in question carries the constructor, or method in question carries the
<interfacename>@Autowired</interfacename> annotation. For more <interfacename>@Autowired</interfacename> annotation. For more
information, see <xref information, see <xref linkend="beans-autowired-annotation" />.</para>
linkend="beans-autowired-annotation" />.</para>
<para>When an ApplicationContext creates a class that implements the <para>When an ApplicationContext creates a class that implements the
<interfacename>org.springframework.beans.factory.BeanNameAware</interfacename> <interfacename>org.springframework.beans.factory.BeanNameAware</interfacename>
@ -3846,12 +3851,12 @@ org.springframework.scripting.groovy.GroovyMessenger@272961</programlisting>
<para>Using callback interfaces or annotations in conjunction with a <para>Using callback interfaces or annotations in conjunction with a
custom <interfacename>BeanPostProcessor</interfacename> implementation custom <interfacename>BeanPostProcessor</interfacename> implementation
is a common means of extending the Spring IoC container. An example is is a common means of extending the Spring IoC container. An example is
shown in <xref linkend="metadata-annotations-required" /> which demonstrates the shown in <xref linkend="metadata-annotations-required" /> which
usage of a custom <interfacename>BeanPostProcessor</interfacename> demonstrates the usage of a custom
implementation that ships with the Spring distribution which ensures <interfacename>BeanPostProcessor</interfacename> implementation that
that JavaBean properties on beans that are marked with an (arbitrary) ships with the Spring distribution which ensures that JavaBean
annotation are actually (configured to be) dependency-injected with a properties on beans that are marked with an (arbitrary) annotation are
value.</para> actually (configured to be) dependency-injected with a value.</para>
</section> </section>
</section> </section>
@ -4178,12 +4183,16 @@ dataSource.url=jdbc:mysql:mydb</programlisting>
adds support for JSR-250 annotations such as adds support for JSR-250 annotations such as
<interfacename>@Resource</interfacename>, <interfacename>@Resource</interfacename>,
<interfacename>@PostConstruct</interfacename>, and <interfacename>@PostConstruct</interfacename>, and
<interfacename>@PreDestroy</interfacename>. Use of these annotations also <interfacename>@PreDestroy</interfacename>. Spring 3.0 adds support for
requires that certain <interfacename>BeanPostProcessors</interfacename> be JSR-330 (Dependency Injection for Java) annotations contained in the
registered within the Spring container. As always, you can register them javax.inject package such as <classname>@Inject</classname>,
as individual bean definitions, but they can also be implicitly registered <literal>@Qualifier, @Named, and @Provider</literal> if the JSR330 jar is
by including the following tag in an XML-based Spring configuration present on the classpath. Use of these annotations also requires that
(notice the inclusion of the <literal>context</literal> namespace):</para> certain <interfacename>BeanPostProcessors</interfacename> be registered
within the Spring container. As always, you can register them as
individual bean definitions, but they can also be implicitly registered by
including the following tag in an XML-based Spring configuration (notice
the inclusion of the <literal>context</literal> namespace):</para>
<programlisting language="xml">&lt;?xml version="1.0" encoding="UTF-8"?&gt; <programlisting language="xml">&lt;?xml version="1.0" encoding="UTF-8"?&gt;
&lt;beans xmlns="http://www.springframework.org/schema/beans" &lt;beans xmlns="http://www.springframework.org/schema/beans"
@ -4250,12 +4259,22 @@ dataSource.url=jdbc:mysql:mydb</programlisting>
</section> </section>
<section id="beans-autowired-annotation"> <section id="beans-autowired-annotation">
<title><interfacename>@Autowired</interfacename></title> <title><interfacename>@Autowired and @Inject</interfacename></title>
<para>As expected, you can apply the <para>As expected, you can apply the
<interfacename>@Autowired</interfacename> annotation to "traditional" <interfacename>@Autowired</interfacename> annotation to "traditional"
setter methods:</para> setter methods:</para>
<note>
<para>JSR 330's @Inject annotation can be used in place of Spring's
<interfacename>@Autowired</interfacename> in the examples below.
<interfacename>@Inject</interfacename> does not have a required
property unlike Spring's <interfacename>@Autowire</interfacename>
annotation which as a required property to indicate if the value being
injected is optional. This behavior is enabled automatically if you
have the JSR 330 jar on the classpath.</para>
</note>
<programlisting language="java">public class SimpleMovieLister { <programlisting language="java">public class SimpleMovieLister {
private MovieFinder movieFinder; private MovieFinder movieFinder;
@ -4423,6 +4442,14 @@ dataSource.url=jdbc:mysql:mydb</programlisting>
matches so that a specific bean is chosen for each argument. In the matches so that a specific bean is chosen for each argument. In the
simplest case, this can be a plain descriptive value:</para> simplest case, this can be a plain descriptive value:</para>
<note>
<para>Note that the JSR 330 <interfacename>@Qualifier</interfacename>
annotation can only be applied as a meta-annotation unlike Spring's
@Qualifier which takes a string property to discriminate among
multiple injection candidates and can be placed on annotation as well
as types, fields, methods, contstructors and parameters.</para>
</note>
<programlisting language="java">public class MovieRecommender { <programlisting language="java">public class MovieRecommender {
@Autowired @Autowired
@ -4537,6 +4564,14 @@ dataSource.url=jdbc:mysql:mydb</programlisting>
<interfacename>@Qualifier</interfacename> annotation within your <interfacename>@Qualifier</interfacename> annotation within your
definition:</para> definition:</para>
<note>
<para>You can use JSR 330's <interfacename>@Qualifier
</interfacename>annotation in the manner described below in place of
Spring's <interfacename>@Qualifier</interfacename> annotation. This
behavior is enabled automatically if you have the JSR 330 jar on the
classpath.</para>
</note>
<programlisting language="java">@Target({ElementType.FIELD, ElementType.PARAMETER}) <programlisting language="java">@Target({ElementType.FIELD, ElementType.PARAMETER})
@Retention(RetentionPolicy.RUNTIME) @Retention(RetentionPolicy.RUNTIME)
<emphasis role="bold">@Qualifier</emphasis> <emphasis role="bold">@Qualifier</emphasis>
@ -5046,6 +5081,18 @@ public class JpaMovieFinder implements MovieFinder {
by including the <emphasis>annotation-config</emphasis> attribute with by including the <emphasis>annotation-config</emphasis> attribute with
a value of false.</para> a value of false.</para>
</note> </note>
<note>
<para>In Spring 3.0 RC1 you can use JSR 330's
<interfacename>@Named</interfacename> annotation in place of
stereotpye annotations and they will be automatically detected during
component-scanning. The value of the
<interfacename>@Named</interfacename> property will be used as the
Bean Name. At this time Spring default for bean scope will be applied
when using @Named. This behavior as well as mapping of JSR 330 and
JSR299 scopes is planned for Spring 3.0 GA assuming the JSRs are
stable at that time.</para>
</note>
</section> </section>
<section id="beans-scanning-filters"> <section id="beans-scanning-filters">
@ -5129,8 +5176,7 @@ public class JpaMovieFinder implements MovieFinder {
<entry>A custom implementation of the <entry>A custom implementation of the
<interfacename>org.springframework.core.type <interfacename>org.springframework.core.type
.TypeFilter</interfacename> .TypeFilter</interfacename> interface.</entry>
interface.</entry>
</row> </row>
</tbody> </tbody>
</tgroup> </tgroup>
@ -5194,7 +5240,8 @@ public class FactoryMethodComponent {
annotations that can be specified are <literal>@Scope</literal>, annotations that can be specified are <literal>@Scope</literal>,
<literal>@Lazy</literal>, and custom qualifier annotations. Autowired <literal>@Lazy</literal>, and custom qualifier annotations. Autowired
fields and methods are supported as previously discussed, with fields and methods are supported as previously discussed, with
additional support for autowiring of <literal>@Bean</literal> methods:</para> additional support for autowiring of <literal>@Bean</literal>
methods:</para>
<programlisting language="java">@Component <programlisting language="java">@Component
public class FactoryMethodComponent { public class FactoryMethodComponent {
@ -5265,12 +5312,20 @@ public class FactoryMethodComponent {
<interfacename>@Service</interfacename>, and <interfacename>@Service</interfacename>, and
<interfacename>@Controller</interfacename>) that contains a <interfacename>@Controller</interfacename>) that contains a
<literal>name</literal> value will thereby provide that name to the <literal>name</literal> value will thereby provide that name to the
corresponding bean definition. If such an annotation contains no corresponding bean definition.</para>
<literal>name</literal> value or for any other detected component (such
as those discovered by custom filters), the default bean name generator <note>
returns the uncapitalized non-qualified class name. For example, if the <para>JSR 330's @Named annotation can be used as a mean to both detect
following two components were detected, the names would be myMovieLister components and to provide them with a name. This behavior is enabled
and movieFinderImpl:</para> automatically if you have the JSR 330 jar on the classpath.</para>
</note>
<para>If such an annotation contains no <literal>name</literal> value or
for any other detected component (such as those discovered by custom
filters), the default bean name generator returns the uncapitalized
non-qualified class name. For example, if the following two components
were detected, the names would be myMovieLister and
movieFinderImpl:</para>
<programlisting language="java">@Service("myMovieLister") <programlisting language="java">@Service("myMovieLister")
public class SimpleMovieLister { public class SimpleMovieLister {
@ -5516,7 +5571,8 @@ public class AppConfig {
<interfacename>@Configuration</interfacename>-annotated class supports <interfacename>@Configuration</interfacename>-annotated class supports
the regular lifecycle callbacks. Any classes defined with the @Bean the regular lifecycle callbacks. Any classes defined with the @Bean
annotation can use the @PostConstruct and @PreDestroy annotations from annotation can use the @PostConstruct and @PreDestroy annotations from
JSR-250, see <link linkend="beans-factory-lifecycle-combined-effects">JSR-250 JSR-250, see <link
linkend="beans-factory-lifecycle-combined-effects">JSR-250
annotations</link> for further details.</para> annotations</link> for further details.</para>
<para>The regular Spring <link <para>The regular Spring <link
@ -5528,8 +5584,7 @@ public class AppConfig {
<para>The standard set of <code>*Aware</code> interfaces such as <para>The standard set of <code>*Aware</code> interfaces such as
<code><link <code><link
linkend="beans-beanfactory">BeanFactoryAware</link></code>, linkend="beans-beanfactory">BeanFactoryAware</link></code>,
<code><link <code><link linkend="beans-factory-aware">BeanNameAware</link></code>,
linkend="beans-factory-aware">BeanNameAware</link></code>,
<code><link <code><link
linkend="context-functionality-messagesource">MessageSourceAware</link></code>, linkend="context-functionality-messagesource">MessageSourceAware</link></code>,
<code><link <code><link

41
spring-framework-reference/src/new-in-3.xml
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@ -68,8 +68,8 @@
<sidebar id="new-in-3-intro-work-in-progress"> <sidebar id="new-in-3-intro-work-in-progress">
<title>Note:</title> <title>Note:</title>
<para>This document is not yet available. It will <para>This document is not yet available. It will be available for the
be available for the Spring 3.0 final release.</para> Spring 3.0 final release.</para>
</sidebar> </sidebar>
</section> </section>
@ -186,7 +186,8 @@
</listitem> </listitem>
<listitem> <listitem>
<para>General-purpose type conversion system and UI field formatting system</para> <para>General-purpose type conversion system and UI field formatting
system</para>
</listitem> </listitem>
<listitem> <listitem>
@ -384,15 +385,18 @@ public class AppConfig {
</section> </section>
<section id="new-feature-convert-and-format"> <section id="new-feature-convert-and-format">
<title>General purpose type conversion system and UI field formatting system</title> <title>General purpose type conversion system and UI field formatting
<para> system</title>
A general purpose <link linkend="core.convert">type conversion system</link> has been introduced.
The system is currently used by SpEL for type coersion, and may also be used by a Spring Container when binding bean property values. <para>A general purpose <link linkend="core.convert">type conversion
</para> system</link> has been introduced. The system is currently used by SpEL
<para> for type coersion, and may also be used by a Spring Container when
In addition, a <link linkend="ui.format">ui.format</link> system has been introduced for formatting UI field values. binding bean property values.</para>
This system provides a simpler and more robust alternative to JavaBean PropertyEditors in UI environments such as Spring MVC.
</para> <para>In addition, a <link linkend="ui.format">ui.format</link> system
has been introduced for formatting UI field values. This system provides
a simpler and more robust alternative to JavaBean PropertyEditors in UI
environments such as Spring MVC.</para>
</section> </section>
<section id="new-feature-oxm"> <section id="new-feature-oxm">
@ -431,9 +435,9 @@ public class AppConfig {
the <emphasis>Object to XML mapping</emphasis> functionality mentioned the <emphasis>Object to XML mapping</emphasis> functionality mentioned
earlier.</para> earlier.</para>
<para>Refer to the section on <link linkend="mvc">MVC</link> and <para>Refer to the section on <link linkend="mvc">MVC</link> and <link
<link linkend="rest-resttemplate">the RestTemplate</link> linkend="rest-resttemplate">the RestTemplate</link> for more
for more information.</para> information.</para>
</section> </section>
<section> <section>
@ -452,9 +456,8 @@ public class AppConfig {
<section id="new-feature-validation"> <section id="new-feature-validation">
<title>Declarative model validation</title> <title>Declarative model validation</title>
<para>Hibernate Validator, JSR 303</para> <para>JSR 303 support using Hibernate Validator as the
implementation.</para>
<para>Work in progress... not part of the Spring 3.0 M3 release.</para>
</section> </section>
<section id="new-feature-jee-6"> <section id="new-feature-jee-6">
@ -464,7 +467,7 @@ public class AppConfig {
use of the new @Async annotation (or EJB 3.1's @Asynchronous use of the new @Async annotation (or EJB 3.1's @Asynchronous
annotation).</para> annotation).</para>
<para>JSF 2.0, JPA 2.0, etc</para> <para>JSR 303, JSF 2.0, JPA 2.0, etc</para>
<para>Work in progress... not part of the Spring 3.0 M3 release.</para> <para>Work in progress... not part of the Spring 3.0 M3 release.</para>
</section> </section>

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