From cc644b2c2073acac30cc80d3a160c1007bad4213 Mon Sep 17 00:00:00 2001
From: Michal Srb <msrb@redhat.com>
Date: Tue, 2 Jul 2013 12:54:37 +0200
Subject: [PATCH] Remove references to ConcurrentReaderHashMap

File ConcurrentReaderHashMap.java has been removed due to unclear licensing
---
 src/java/org/dom4j/tree/NamespaceCache.java | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/java/org/dom4j/tree/NamespaceCache.java b/src/java/org/dom4j/tree/NamespaceCache.java
index 89ff316..9b716de 100644
--- a/src/java/org/dom4j/tree/NamespaceCache.java
+++ b/src/java/org/dom4j/tree/NamespaceCache.java
@@ -9,7 +9,9 @@ package org.dom4j.tree;
 
 import java.lang.ref.WeakReference;
 import java.lang.reflect.Constructor;
+import java.lang.UnsupportedOperationException;
 import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
 
 import org.dom4j.Namespace;
 
@@ -59,9 +61,7 @@ public class NamespaceCache {
                 cache = (Map) clazz.newInstance();
                 noPrefixCache = (Map) clazz.newInstance();
             } catch (Throwable t2) {
-                /* If previous implementations fail, use internal one */
-                cache = new ConcurrentReaderHashMap();
-                noPrefixCache = new ConcurrentReaderHashMap();
+                throw new UnsupportedOperationException("ConcurrentReaderHashMap is not available");
             }
         }
     }
@@ -154,7 +154,7 @@ public class NamespaceCache {
                 answer = (Map) cache.get(uri);
 
                 if (answer == null) {
-                    answer = new ConcurrentReaderHashMap();
+                    answer = new ConcurrentHashMap();
                     cache.put(uri, answer);
                 }
             }
-- 
1.8.1.4