From f0a4ea9c7241885ffd38d5faf38f25a624adac2c Mon Sep 17 00:00:00 2001
From: Artur Signell <artur@vaadin.com>
Date: Fri, 15 Nov 2013 18:49:39 +0200
Subject: Do not throw NPE for equals(null) (#8910)

Change-Id: Ie9a658911c9f2722e518dedbe181c24e5ace07db
---
 server/src/com/vaadin/data/util/filter/Between.java            | 4 ++++
 server/src/com/vaadin/data/util/filter/Compare.java            | 3 +++
 server/src/com/vaadin/data/util/filter/IsNull.java             | 4 ++++
 server/src/com/vaadin/data/util/filter/Like.java               | 4 ++++
 server/src/com/vaadin/data/util/filter/SimpleStringFilter.java | 3 +++
 5 files changed, 18 insertions(+)

(limited to 'server/src/com/vaadin/data/util')

diff --git a/server/src/com/vaadin/data/util/filter/Between.java b/server/src/com/vaadin/data/util/filter/Between.java
index 8209f7b0a2..a76821981a 100644
--- a/server/src/com/vaadin/data/util/filter/Between.java
+++ b/server/src/com/vaadin/data/util/filter/Between.java
@@ -67,6 +67,10 @@ public class Between implements Filter {
 
     @Override
     public boolean equals(Object obj) {
+        if (obj == null) {
+            return false;
+        }
+
         // Only objects of the same class can be equal
         if (!getClass().equals(obj.getClass())) {
             return false;
diff --git a/server/src/com/vaadin/data/util/filter/Compare.java b/server/src/com/vaadin/data/util/filter/Compare.java
index f9f19c6602..ac167673bd 100644
--- a/server/src/com/vaadin/data/util/filter/Compare.java
+++ b/server/src/com/vaadin/data/util/filter/Compare.java
@@ -307,6 +307,9 @@ public abstract class Compare implements Filter {
 
     @Override
     public boolean equals(Object obj) {
+        if (obj == null) {
+            return false;
+        }
 
         // Only objects of the same class can be equal
         if (!getClass().equals(obj.getClass())) {
diff --git a/server/src/com/vaadin/data/util/filter/IsNull.java b/server/src/com/vaadin/data/util/filter/IsNull.java
index 5c5bdfc0b1..6907a016a1 100644
--- a/server/src/com/vaadin/data/util/filter/IsNull.java
+++ b/server/src/com/vaadin/data/util/filter/IsNull.java
@@ -62,6 +62,10 @@ public final class IsNull implements Filter {
 
     @Override
     public boolean equals(Object obj) {
+        if (obj == null) {
+            return false;
+        }
+
         // Only objects of the same class can be equal
         if (!getClass().equals(obj.getClass())) {
             return false;
diff --git a/server/src/com/vaadin/data/util/filter/Like.java b/server/src/com/vaadin/data/util/filter/Like.java
index 4c15564105..dc2e18363a 100644
--- a/server/src/com/vaadin/data/util/filter/Like.java
+++ b/server/src/com/vaadin/data/util/filter/Like.java
@@ -84,6 +84,10 @@ public class Like implements Filter {
 
     @Override
     public boolean equals(Object obj) {
+        if (obj == null) {
+            return false;
+        }
+
         // Only objects of the same class can be equal
         if (!getClass().equals(obj.getClass())) {
             return false;
diff --git a/server/src/com/vaadin/data/util/filter/SimpleStringFilter.java b/server/src/com/vaadin/data/util/filter/SimpleStringFilter.java
index bc58999445..a214e69846 100644
--- a/server/src/com/vaadin/data/util/filter/SimpleStringFilter.java
+++ b/server/src/com/vaadin/data/util/filter/SimpleStringFilter.java
@@ -82,6 +82,9 @@ public final class SimpleStringFilter implements Filter {
 
     @Override
     public boolean equals(Object obj) {
+        if (obj == null) {
+            return false;
+        }
 
         // Only ones of the objects of the same class can be equal
         if (!(obj instanceof SimpleStringFilter)) {
-- 
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