added symbols for concise DSL syntax

pom.xml

@@ -67,6 +67,11 @@
             <version>2.9.3</version>
             <!-- New source is here: https://github.com/sonyxperiadev/gerrit-events -->
         </dependency>
+        <dependency>
+            <groupId>org.jenkins-ci.plugins</groupId>
+            <artifactId>structs</artifactId>
+            <version>1.1</version>
+        </dependency>
         <dependency>
             <groupId>org.jenkins-ci.plugins</groupId>
             <artifactId>git</artifactId>

src/main/java/com/sonyericsson/hudson/plugins/gerrit/trigger/hudsontrigger/GerritTrigger.java

@@ -113,6 +113,7 @@
 
 import jenkins.model.Jenkins;
 
+import org.jenkinsci.Symbol;
 import org.kohsuke.stapler.AncestorInPath;
 import org.kohsuke.stapler.DataBoundConstructor;
 import org.kohsuke.stapler.DataBoundSetter;
@@ -1837,6 +1838,7 @@ public Object readResolve() throws ObjectStreamException {
      * The Descriptor for the Trigger.
      */
     @Extension
+    @Symbol("gerrit")
     public static final class DescriptorImpl extends TriggerDescriptor {
 
         /**

src/main/java/com/sonyericsson/hudson/plugins/gerrit/trigger/hudsontrigger/events/PluginChangeAbandonedEvent.java

@@ -29,6 +29,7 @@
 import hudson.model.Descriptor;
 import hudson.model.Hudson;
 import java.io.Serializable;
+import org.jenkinsci.Symbol;
 import org.kohsuke.stapler.DataBoundConstructor;
 
 /**
@@ -63,6 +64,7 @@ public Class getCorrespondingEventClass() {
      * The descriptor for the PluginChangeAbandonedEvent.
      */
     @Extension
+    @Symbol("changeAbandoned")
     public static class PluginChangeAbandonedEventDescriptor extends PluginGerritEventDescriptor {
 
         @Override

src/main/java/com/sonyericsson/hudson/plugins/gerrit/trigger/hudsontrigger/events/PluginChangeMergedEvent.java

@@ -28,6 +28,7 @@
 import hudson.Extension;
 import hudson.model.Descriptor;
 import hudson.model.Hudson;
+import org.jenkinsci.Symbol;
 import org.kohsuke.stapler.DataBoundConstructor;
 
 import java.io.Serializable;
@@ -63,6 +64,7 @@ public Class getCorrespondingEventClass() {
      * The descriptor for the PluginChangeMergedEvent.
      */
     @Extension
+    @Symbol("changeMerged")
     public static class PluginChangeMergedEventDescriptor extends PluginGerritEventDescriptor {
 
         @Override

src/main/java/com/sonyericsson/hudson/plugins/gerrit/trigger/hudsontrigger/events/PluginChangeRestoredEvent.java

@@ -29,6 +29,7 @@
 import hudson.model.Descriptor;
 import hudson.model.Hudson;
 import java.io.Serializable;
+import org.jenkinsci.Symbol;
 import org.kohsuke.stapler.DataBoundConstructor;
 
 /**
@@ -64,6 +65,7 @@ public Class getCorrespondingEventClass() {
      * The descriptor for the PluginChangeRestoredEvent.
      */
     @Extension
+    @Symbol("changeRestored")
     public static class PluginChangeRestoredEventDescriptor extends PluginGerritEventDescriptor {
 
         @Override

src/main/java/com/sonyericsson/hudson/plugins/gerrit/trigger/hudsontrigger/events/PluginCommentAddedContainsEvent.java

@@ -28,6 +28,7 @@
 import java.io.Serializable;
 import java.util.regex.Pattern;
 
+import org.jenkinsci.Symbol;
 import org.kohsuke.stapler.DataBoundConstructor;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -49,6 +50,7 @@ public class PluginCommentAddedContainsEvent extends PluginGerritEvent
      * The descriptor for PluginCommentAddedContainsEvent.
      */
     @Extension
+    @Symbol("commentAddedContains")
     public static class PluginCommentAddedContainsEventDescriptor extends
             PluginGerritEventDescriptor {
 

src/main/java/com/sonyericsson/hudson/plugins/gerrit/trigger/hudsontrigger/events/PluginCommentAddedEvent.java

@@ -38,6 +38,7 @@
 import hudson.model.Hudson;
 import hudson.util.ListBoxModel;
 
+import org.jenkinsci.Symbol;
 import org.kohsuke.stapler.DataBoundConstructor;
 import org.kohsuke.stapler.QueryParameter;
 
@@ -105,6 +106,7 @@ public Class getCorrespondingEventClass() {
      * The Descriptor for the PluginCommentAddedEvent.
      */
     @Extension
+    @Symbol("commentAdded")
     public static class PluginCommentAddedEventDescriptor extends PluginGerritEventDescriptor {
 
         @Override

src/main/java/com/sonyericsson/hudson/plugins/gerrit/trigger/hudsontrigger/events/PluginDraftPublishedEvent.java

@@ -33,6 +33,7 @@
 import hudson.model.Descriptor;
 import hudson.model.Hudson;
 
+import org.jenkinsci.Symbol;
 import org.kohsuke.stapler.DataBoundConstructor;
 
 import java.io.Serializable;
@@ -69,6 +70,7 @@ public Class getCorrespondingEventClass() {
      * The Descriptor for the PluginDraftPublishedEvent.
      */
     @Extension
+    @Symbol("draftPublished")
     public static class PluginDraftPublishedEventDescriptor extends PluginGerritEventDescriptor {
 
         /**

src/main/java/com/sonyericsson/hudson/plugins/gerrit/trigger/hudsontrigger/events/PluginPatchsetCreatedEvent.java

@@ -32,6 +32,7 @@
 import hudson.Extension;
 import hudson.model.Descriptor;
 import hudson.model.Hudson;
+import org.jenkinsci.Symbol;
 import org.kohsuke.stapler.DataBoundConstructor;
 
 import java.io.Serializable;
@@ -133,6 +134,7 @@ public boolean shouldTriggerOn(GerritTriggeredEvent event) {
      * The Descriptor for the PluginPatchsetCreatedEvent.
      */
     @Extension
+    @Symbol("patchsetCreated")
     public static class PluginPatchsetCreatedEventDescriptor extends PluginGerritEventDescriptor {
 
         @Override

src/main/java/com/sonyericsson/hudson/plugins/gerrit/trigger/hudsontrigger/events/PluginRefUpdatedEvent.java

@@ -28,6 +28,7 @@
 import hudson.Extension;
 import hudson.model.Descriptor;
 import hudson.model.Hudson;
+import org.jenkinsci.Symbol;
 import org.kohsuke.stapler.DataBoundConstructor;
 
 import java.io.Serializable;
@@ -63,6 +64,7 @@ public Class getCorrespondingEventClass() {
      * The descriptor for the PluginRefUpdatedEvent.
      */
     @Extension
+    @Symbol("refUpdated")
     public static class PluginRefUpdatedEventDescriptor extends PluginGerritEventDescriptor {
 
         @Override