HotSwaping code into “mvnDebug tomcat:run”

Question

Usually i start tomcat using mvnDebug tomcat:run.

After Code-change i need to use mvn tomcat:redeploy.

This is sub-optimal because i often only change content of existing method-bodys.

Can I HotSwap the method's body into the runtime, and hot-redeploy as a fallback?

I have unfortunatally nothing found like a maven-hotswap-plugin.

faces-config.xml

... <application>
  <view-handler>com.sun.facelets.FaceletViewHandler</view-handler>
  <locale-config>
   <default-locale>de_DE</default-locale>
  </locale-config>
  <resource-bundle>
   <base-name>Message</base-name>
   <var>message</var>
  </resource-bundle>
  <el-resolver>org.springframework.web.jsf.el.SpringBeanFacesELResolver</el-resolver>
 </application>
</faces-config>

web.xml:

<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<listener>
    <listener-class>
        org.springframework.web.context.request.RequestContextListener
    </listener-class>
</listener>

pom.xml:

<dependencies>
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-envers</artifactId>
        <version>4.3.0.Final</version>
    </dependency>
    <dependency>
        <groupId>net.java.dev.ajax4jsf</groupId>
        <artifactId>ajax4jsf</artifactId>
        <version>1.0.6</version>
    </dependency>

    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-core</artifactId>
        <version>3.6.6.Final</version>
    </dependency>
    <dependency>
        <groupId>commons-lang</groupId>
        <artifactId>commons-lang</artifactId>
        <version>2.3</version>
    </dependency>
    <dependency>
        <groupId>org.apache.myfaces.core</groupId>
        <artifactId>myfaces-api</artifactId>
        <version>1.2.10</version>
        <scope>compile</scope>
    </dependency>

    <dependency>
        <groupId>org.apache.myfaces.core</groupId>
        <artifactId>myfaces-impl</artifactId>
        <version>1.2.10</version>
        <scope>runtime</scope>
    </dependency>

    <dependency>
        <groupId>org.apache.myfaces.tomahawk</groupId>
        <artifactId>tomahawk12</artifactId>
        <version>1.1.9</version>
        <scope>runtime</scope>
    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>jstl</artifactId>
        <version>1.2</version>
        <scope>runtime</scope>
    </dependency>
    <dependency>
        <groupId>com.sun.facelets</groupId>
        <artifactId>jsf-facelets</artifactId>
        <version>1.1.14</version>
    </dependency>
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-validator</artifactId>
        <version>3.1.0.GA</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring</artifactId>
        <version>2.5.6</version>
    </dependency>
    <dependency>
        <groupId>org.postgresql</groupId>
        <artifactId>postgresql</artifactId>
        <version>9.2-1004-jdbc41</version>
    </dependency>

    <dependency>
        <groupId>servletapi</groupId>
        <artifactId>servlet-api</artifactId>
        <version>2.4</version>
        <scope>provided</scope>
    </dependency>
</dependencies>

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.tomcat.maven</groupId>
            <artifactId>tomcat7-maven-plugin</artifactId>
            <version>2.2</version>
            <configuration>
                <contextReloadable>true</contextReloadable>
            </configuration>
        </plugin>
    </plugins>
</build>

Answer 1

One of the best solutions for your situation is JRebel

• What you need to do is make the appropriate changes to the framework and integrate it using a jrebel-maven-plugin.
  It allows to reload all the method bodies.
• Once you are done with the link-up a auto xml configuration file will be generated which will be used as a config file for the plugin.
• Mention Your Java Agent as well.
• After the successful test you can also integrate it with a build