SLING-4381 fix logic error for buckets with password; update readme

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1680746 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/main/java/org/apache/sling/nosql/couchbase/client/impl/CouchbaseClientImpl.java b/src/main/java/org/apache/sling/nosql/couchbase/client/impl/CouchbaseClientImpl.java
index a12a61f..5103ca4 100644
--- a/src/main/java/org/apache/sling/nosql/couchbase/client/impl/CouchbaseClientImpl.java
+++ b/src/main/java/org/apache/sling/nosql/couchbase/client/impl/CouchbaseClientImpl.java
@@ -97,8 +97,8 @@
         }
 
         try {
-            cluster = CouchbaseUtil.createCluster(couchbaseHosts);
-            bucket = CouchbaseUtil.openBucket(cluster, bucketName, bucketPassword);
+            cluster = CouchbaseEnvironmentSingleton.createCluster(couchbaseHosts);
+            bucket = CouchbaseEnvironmentSingleton.openBucket(cluster, bucketName, bucketPassword);
         }
         catch (Throwable ex) {
             enabled = false;
diff --git a/src/main/java/org/apache/sling/nosql/couchbase/client/impl/CouchbaseUtil.java b/src/main/java/org/apache/sling/nosql/couchbase/client/impl/CouchbaseEnvironmentSingleton.java
similarity index 93%
rename from src/main/java/org/apache/sling/nosql/couchbase/client/impl/CouchbaseUtil.java
rename to src/main/java/org/apache/sling/nosql/couchbase/client/impl/CouchbaseEnvironmentSingleton.java
index 523870c..555fac8 100644
--- a/src/main/java/org/apache/sling/nosql/couchbase/client/impl/CouchbaseUtil.java
+++ b/src/main/java/org/apache/sling/nosql/couchbase/client/impl/CouchbaseEnvironmentSingleton.java
@@ -27,11 +27,11 @@
 /**
  * Manages couchbase environment.
  */
-final class CouchbaseUtil {
+final class CouchbaseEnvironmentSingleton {
 
     private static final CouchbaseEnvironment COUCHBASE_ENVIRONMENT = DefaultCouchbaseEnvironment.builder().build();
 
-    private CouchbaseUtil() {
+    private CouchbaseEnvironmentSingleton() {
         // static methods only
     }
 
@@ -52,7 +52,7 @@
      * @return Couchbase bucket
      */
     public static Bucket openBucket(Cluster cluster, String bucketName, String bucketPassword) {
-        if (bucketPassword == null) {
+        if (bucketPassword != null) {
             return cluster.openBucket(bucketName, bucketPassword);
         }
         else {