[engine][VELOCITY-915] Add new backward compatibility flags to mimic 1.7 behavior for invalid references event handlers

git-svn-id: https://svn.apache.org/repos/asf/velocity/engine/trunk@1860691 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 24 insertions, 0 deletions

diff --git a/velocity-engine-core/src/main/java/org/apache/velocity/runtime/RuntimeConstants.java b/velocity-engine-core/src/main/java/org/apache/velocity/runtime/RuntimeConstants.java
index 27782632..c4d59ef2 100644
--- a/velocity-engine-core/src/main/java/org/apache/velocity/runtime/RuntimeConstants.java
+++ b/velocity-engine-core/src/main/java/org/apache/velocity/runtime/RuntimeConstants.java
@@ -274,6 +274,30 @@ public interface RuntimeConstants extends DeprecatedRuntimeConstants
      */
     String EVENTHANDLER_INVALIDREFERENCES = "event_handler.invalid_references.class";
 
+    /**
+     * The <code>event_handler.invalid_references.quiet</code> property specifies if invalid quiet references
+     * (as in <code>$!foo</code>) trigger events (defaults to false).
+     * {@link org.apache.velocity.app.event.InvalidReferenceEventHandler} implementations to use.
+     * @since 2.2
+     */
+    String EVENTHANDLER_INVALIDREFERENCES_QUIET = "event_handler.invalid_references.quiet";
+
+    /**
+     * The <code>event_handler.invalid_references.null</code> property specifies if invalid null references
+     * (aka the value is present in the context or parent object but is null or a method returned null)
+     * trigger invalid reference events (defaults to false).
+     * {@link org.apache.velocity.app.event.InvalidReferenceEventHandler} implementations to use.
+     * @since 2.2
+     */
+    String EVENTHANDLER_INVALIDREFERENCES_NULL = "event_handler.invalid_references.null";
+
+    /**
+     * The <code>event_handler.invalid_references.tested</code> property specifies if invalid tested references
+     * (as in <code>#if($foo)</code> ) trigger invalid reference events (defaults to false).
+     * {@link org.apache.velocity.app.event.InvalidReferenceEventHandler} implementations to use.
+     * @since 2.2
+     */
+    String EVENTHANDLER_INVALIDREFERENCES_TESTED = "event_handler.invalid_references.tested";
 
     /*
      * ----------------------------------------------------------------------