[ranger] branch master updated: RANGER-2451: fix for ClassCastException in RangerPolicyEngineImpl.convertFromSingleResource()

[madhan]

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madhan pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/ranger.git


The following commit(s) were added to refs/heads/master by this push:
     new 37c48a7  RANGER-2451: fix for ClassCastException in 
RangerPolicyEngineImpl.convertFromSingleResource()
37c48a7 is described below

commit 37c48a7d04cde78ac023799eaa1ced7ade0fa36d
Author: nixonrodrigues <ni...@apache.org>
AuthorDate: Tue May 28 17:47:20 2019 +0530

    RANGER-2451: fix for ClassCastException in 
RangerPolicyEngineImpl.convertFromSingleResource()
    
    Signed-off-by: Madhan Neethiraj <mad...@apache.org>
---
 .../org/apache/ranger/plugin/policyengine/RangerPolicyEngineImpl.java | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git 
a/agents-common/src/main/java/org/apache/ranger/plugin/policyengine/RangerPolicyEngineImpl.java
 
b/agents-common/src/main/java/org/apache/ranger/plugin/policyengine/RangerPolicyEngineImpl.java
index eab2c23..db5dde7 100644
--- 
a/agents-common/src/main/java/org/apache/ranger/plugin/policyengine/RangerPolicyEngineImpl.java
+++ 
b/agents-common/src/main/java/org/apache/ranger/plugin/policyengine/RangerPolicyEngineImpl.java
@@ -1764,8 +1764,8 @@ public class RangerPolicyEngineImpl implements 
RangerPolicyEngine {
         for (Map.Entry<String, ? extends Object> entry : resource.entrySet()) {
             List<String> value;
 
-            if (entry.getValue() instanceof Collection) {
-                value = (List<String>) entry.getValue();
+            if (entry.getValue() instanceof Collection && 
CollectionUtils.isNotEmpty((Collection) entry.getValue())) {
+                value = new ArrayList((Collection) entry.getValue());
             } else if (entry.getValue() instanceof String) {
                 value = new ArrayList<>();
                 value.add((String) entry.getValue());