Created command package.

Moved TrackCommand to new package.
Added simple Validator for TrackCommands.

dddsample/src/main/java/se/citerus/dddsample/web/TrackCommand.java → dddsample/src/main/java/se/citerus/dddsample/web/command/TrackCommand.java

@@ -1,4 +1,4 @@
-package se.citerus.dddsample.web;
+package se.citerus.dddsample.web.command;
 
 public class TrackCommand {
 

dddsample/src/main/java/se/citerus/dddsample/web/command/TrackCommandValidator.java

@@ -0,0 +1,34 @@
+package se.citerus.dddsample.web.command;
+
+import org.apache.commons.lang.StringUtils;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.springframework.validation.Errors;
+import org.springframework.validation.Validator;
+
+/**
+ * Validator for {@link se.citerus.dddsample.web.command.TrackCommand}s.
+ */
+public class TrackCommandValidator implements Validator {
+
+  /**
+   * Logger for this class and subclasses
+   */
+  private final Log logger = LogFactory.getLog(getClass());
+
+  public boolean supports(Class clazz) {
+    return TrackCommand.class.isAssignableFrom(clazz);
+  }
+
+  public void validate(Object object, Errors errors) {
+    final TrackCommand command = (TrackCommand) object;
+
+    if (StringUtils.isEmpty(command.getTrackingId())) {
+      final String msg = "Illegal id!";
+      logger.warn(msg);
+      errors.rejectValue("trackingId", "track.illegal-id", msg);
+    }
+  }
+
+}
+

dddsample/src/main/resources/log4j.properties

@@ -17,3 +17,4 @@ log4j.appender.logfile.layout.ConversionPattern=%d %p [%c] - %m%n
 
 # Mute some packages
 log4j.logger.org=warn
+log4j.logger.net.sf.ehcache=warn

dddsample/src/main/webapp/WEB-INF/dispatch-servlet.xml

@@ -9,8 +9,11 @@
     <property name="formView" value="start"/>
     <property name="successView" value="cargo"/>
     <property name="cargoService" ref="cargoService"/>
+    <property name="validator" ref="trackCommandValidator"/>
   </bean>
 
+  <bean id="trackCommandValidator" class="se.citerus.dddsample.web.command.TrackCommandValidator"/>
+
   <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
     <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
     <property name="prefix" value="/WEB-INF/jsp/"/>