Add integer based threshold.

src/main/java/io/jenkins/plugins/util/QualityGate.java

@@ -16,9 +16,13 @@
 import jenkins.model.Jenkins;
 
 /**
- * Defines a quality gate based on a specific threshold of code coverage in the current build. After a build has been
- * finished, a set of {@link QualityGate quality gates} will be evaluated and the overall quality gate status will be
- * reported in Jenkins UI.
+ * Defines a quality gate based on a specific threshold of a selected property in the current build. After a build has
+ * been finished, a set of {@link QualityGate quality gates} will be evaluated and the overall quality gate status will
+ * be reported in Jenkins UI. The criticality of the quality gate is determined by the
+ * {@link QualityGateCriticality criticality}. Subclasses must implement the {@link #getName()} method to provide a
+ * human-readable name of the quality gate. Additionally, subclasses must provide a {@link Descriptor} to describe the
+ * quality gate in the UI. Subclasses may add additional properties to configure the quality gate, these must be annotated with the
+ * {@link DataBoundSetter} annotation.
  *
  * @author Johannes Walter
  */
@@ -41,15 +45,19 @@ protected QualityGate(final double threshold) {
     }
 
     /**
-     * Sets the criticality of this quality gate. When a quality gate has been missed, this property determines whether
-     * the result of the associated coverage stage will be marked as unstable or failure.
+     * Creates a new instance of {@link QualityGate}.
      *
-     * @param criticality
-     *         the criticality for this quality gate
+     * @param threshold
+     *         minimum or maximum value that triggers this quality gate
      */
-    @DataBoundSetter
-    public final void setCriticality(final QualityGateCriticality criticality) {
-        this.criticality = criticality;
+    protected QualityGate(final int threshold) {
+        super();
+
+        this.threshold = threshold;
+    }
+
+    public final double getThreshold() {
+        return threshold;
     }
 
     /**
@@ -59,17 +67,41 @@ public final void setCriticality(final QualityGateCriticality criticality) {
      */
     public abstract String getName();
 
-    protected void setThreshold(final double threshold) {
-        this.threshold = threshold;
+    private int asInt(final double value) {
+        return Double.valueOf(value).intValue();
+    }
+
+    /**
+     * Sets the threshold of the quality gate. This integer-based setter is required to bind a UI number element to this
+     * model object.
+     *
+     * @param integerThreshold
+     *         the threshold of the quality gate
+     */
+    @DataBoundSetter
+    public final void setIntegerThreshold(final int integerThreshold) {
+        this.threshold = asInt(integerThreshold);
+    }
+
+    public final int getIntegerThreshold() {
+        return asInt(threshold);
     }
 
     @Override
     public String toString() {
         return getName() + String.format(" - %s: %f", getCriticality(), getThreshold());
     }
 
-    public final double getThreshold() {
-        return threshold;
+    /**
+     * Sets the criticality of this quality gate. When a quality gate has been missed, this property determines whether
+     * the result of the associated coverage stage will be marked as unstable or failure.
+     *
+     * @param criticality
+     *         the criticality for this quality gate
+     */
+    @DataBoundSetter
+    public final void setCriticality(final QualityGateCriticality criticality) {
+        this.criticality = criticality;
     }
 
     public final QualityGateCriticality getCriticality() {