HV-373 Fixing executable builder to merge metadata from different pro…

…viders for one constructor

engine/src/main/java/org/hibernate/validator/internal/metadata/aggregated/ExecutableMetaData.java

@@ -167,10 +167,12 @@ public boolean accepts(ConstrainedElement constrainedElement) {
 			ExecutableElement executableElement = ( (ConstrainedExecutable) constrainedElement ).getLocation()
 					.getExecutableElement();
 
+			//are the locations equal (created by different builders) or
 			//does one of the executables override the other one?
-			return location.getExecutableElement()
-					.overrides( executableElement ) || executableElement.overrides(
-					location.getExecutableElement()
+			return
+					location.getExecutableElement().equals(executableElement) ||
+					location.getExecutableElement().overrides( executableElement ) ||
+					executableElement.overrides( location.getExecutableElement()
 			);
 		}
 

engine/src/main/java/org/hibernate/validator/internal/metadata/raw/ExecutableElement.java

@@ -278,6 +278,38 @@ private <T> T[] paddedLeft(T[] src, T[] dest, T fillElement) {
 
 			return dest;
 		}
+
+		@Override
+		public int hashCode() {
+			final int prime = 31;
+			int result = 1;
+			result = prime * result
+					+ ( ( constructor == null ) ? 0 : constructor.hashCode() );
+			return result;
+		}
+
+		@Override
+		public boolean equals(Object obj) {
+			if ( this == obj ) {
+				return true;
+			}
+			if ( obj == null ) {
+				return false;
+			}
+			if ( getClass() != obj.getClass() ) {
+				return false;
+			}
+			ConstructorElement other = (ConstructorElement) obj;
+			if ( constructor == null ) {
+				if ( other.constructor != null ) {
+					return false;
+				}
+			}
+			else if ( !constructor.equals( other.constructor ) ) {
+				return false;
+			}
+			return true;
+		}
 	}
 
 	private static class MethodElement extends ExecutableElement {
@@ -342,6 +374,38 @@ public boolean isGetterMethod() {
 		public String toString() {
 			return method.toGenericString();
 		}
+
+		@Override
+		public int hashCode() {
+			final int prime = 31;
+			int result = 1;
+			result = prime * result
+					+ ( ( method == null ) ? 0 : method.hashCode() );
+			return result;
+		}
+
+		@Override
+		public boolean equals(Object obj) {
+			if ( this == obj ) {
+				return true;
+			}
+			if ( obj == null ) {
+				return false;
+			}
+			if ( getClass() != obj.getClass() ) {
+				return false;
+			}
+			MethodElement other = (MethodElement) obj;
+			if ( method == null ) {
+				if ( other.method != null ) {
+					return false;
+				}
+			}
+			else if ( !method.equals( other.method ) ) {
+				return false;
+			}
+			return true;
+		}
 	}
 
 	/**