1 files changed, 60 insertions, 67 deletions
diff --git a/bpmn/MSOCoreBPMN/src/main/java/org/openecomp/mso/bpmn/core/RollbackData.java b/bpmn/MSOCoreBPMN/src/main/java/org/openecomp/mso/bpmn/core/RollbackData.java
index 7ece05ea9e..64068d2b90 100644
--- a/bpmn/MSOCoreBPMN/src/main/java/org/openecomp/mso/bpmn/core/RollbackData.java
+++ b/bpmn/MSOCoreBPMN/src/main/java/org/openecomp/mso/bpmn/core/RollbackData.java
@@ -23,6 +23,7 @@ package org.openecomp.mso.bpmn.core;
 import java.io.Serializable;
 import java.util.HashMap;
 import java.util.Map;
+import java.util.stream.Collectors;
 
 /**
  * An object that stores data for rollbacks.  Data is organized by type.  A
@@ -30,80 +31,72 @@ import java.util.Map;
  * in the same object for separate rollback operations.
  */
 public class RollbackData implements Serializable {
-	private static final long serialVersionUID = 1L;
 
-	private Map<String, Map<String, Serializable>> dictionary =
-		new HashMap<String, Map<String, Serializable>>();
-	
-	/**
-	 * Returns true if the specified type is stored in this object.
-	 * @param type the data type
-	 */
-	public boolean hasType(String type) {
-		return dictionary.containsKey(type);
-	}
+    private static final long serialVersionUID = 1L;
 
-	/**
-	 * Stores a single item.
-	 * @param type the data type
-	 * @param key the key
-	 * @param value the value
-	 */
-	public void put(String type, String key, String value) {
-		Map<String, Serializable> mapForType = dictionary.get(type);
+    private Map<String, Map<String, Serializable>> dictionary =
+            new HashMap<String, Map<String, Serializable>>();
 
-		if (mapForType == null) {
-			mapForType = new HashMap<String, Serializable>();
-			dictionary.put(type, mapForType);
-		}
+    /**
+     * Returns true if the specified type is stored in this object.
+     *
+     * @param type the data type
+     */
+    public boolean hasType(String type) {
+        return dictionary.containsKey(type);
+    }
 
-		mapForType.put(key, value);
-	}
+    /**
+     * Stores a single item.
+     *
+     * @param type the data type
+     * @param key the key
+     * @param value the value
+     */
+    public void put(String type, String key, String value) {
+        Map<String, Serializable> mapForType = dictionary.get(type);
 
-	/**
-	 * Gets a single item.
-	 * @param type the data type
-	 * @param key the key
-	 * @return the item or null if there is no item for the specified type and key
-	 */
-	public Serializable get(String type, String key) {
-		Map<String, Serializable> mapForType = dictionary.get(type);
+        if (mapForType == null) {
+            mapForType = new HashMap<String, Serializable>();
+            dictionary.put(type, mapForType);
+        }
 
-		if (mapForType == null) {
-			return null;
-		}
+        mapForType.put(key, value);
+    }
 
-		return mapForType.get(key);
-	}
+    /**
+     * Gets a single item.
+     *
+     * @param type the data type
+     * @param key the key
+     * @return the item or null if there is no item for the specified type and key
+     */
+    public Serializable get(String type, String key) {
+        Map<String, Serializable> mapForType = dictionary.get(type);
 
-	/**
-	 * Gets a map containing all items associated with the specified data type.
-	 * @param type the data type
-	 * @return a map, or null if there are no items associated with the specified
-	 *         data type
-	 */
-	public Map<String, Serializable> get(String type) {
-		return dictionary.get(type);
-	}
+        if (mapForType == null) {
+            return null;
+        }
 
-	/**
-	 * Returns a string representation of this object.
-	 */
-	 @Override
-	public String toString() {
-		StringBuilder out = new StringBuilder();
-		out.append(getClass().getSimpleName());
-		out.append('[');
-		boolean hasOne = false;
-		for (String type : dictionary.keySet()) {
-			if (hasOne) {
-				out.append(',');
-			}
-			out.append(type);
-			out.append(dictionary.get(type));
-			hasOne = true;
-		}
-		out.append(']');
-		return out.toString();
-	}
+        return mapForType.get(key);
+    }
+
+    /**
+     * Gets a map containing all items associated with the specified data type.
+     *
+     * @param type the data type
+     * @return a map, or null if there are no items associated with the specified data type
+     */
+    public Map<String, Serializable> get(String type) {
+        return dictionary.get(type);
+    }
+
+    /**
+     * Returns a string representation of this object.
+     */
+    @Override
+    public String toString() {
+        return dictionary.entrySet().stream().map(entry -> entry.getKey() + entry.getValue())
+                .collect(Collectors.joining(",", "[", "]"));
+    }
 }