Convert Sparky to Spring-Boot

Issue-ID: AAI-599
Change-Id: If474dd02794f442fdddcd90f62fb75e0d6b907e7
Signed-off-by: da490c <dave.adams@amdocs.com>

1 files changed, 100 insertions, 0 deletions

diff --git a/sparkybe-onap-service/src/main/java/org/onap/aai/sparky/util/SuggestionsPermutation.java b/sparkybe-onap-service/src/main/java/org/onap/aai/sparky/util/SuggestionsPermutation.java
new file mode 100644
index 0000000..05f6996
--- /dev/null
+++ b/sparkybe-onap-service/src/main/java/org/onap/aai/sparky/util/SuggestionsPermutation.java
@@ -0,0 +1,100 @@
+/**
+ * ============LICENSE_START===================================================
+ * SPARKY (AAI UI service)
+ * ============================================================================
+ * Copyright © 2017 AT&T Intellectual Property.
+ * Copyright © 2017 Amdocs
+ * All rights reserved.
+ * ============================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=====================================================
+ *
+ * ECOMP and OpenECOMP are trademarks
+ * and service marks of AT&T Intellectual Property.
+ */
+package org.onap.aai.sparky.util;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class SuggestionsPermutation {
+
+  /*
+   * Will return all the unique combinations of the suggestions provided. The order of the
+   * permutation is not taken into account when computing the uniqueness. eg: A list of A,B,C,D will
+   * return [[A], [A, B, C, D], [A, C, D], [A, D], [B], [B, C, D], [B, D], [C], [C, D], [D]]
+   * 
+   * @param list The list to create the unique permutations
+   * 
+   * @return A Arraylist which contains a array list of all possible combinations
+   */
+  public static ArrayList<ArrayList<String>> getUniqueListForSuggestions(
+      List<String> originalList) {
+    ArrayList<ArrayList<String>> lists = new ArrayList<ArrayList<String>>();
+    if (originalList.isEmpty()) {
+      lists.add(new ArrayList<String>());
+      return lists;
+    }
+    List<String> list = new ArrayList<String>(originalList);
+    String head = list.get(0);
+    ArrayList<String> rest = new ArrayList<String>(list.subList(1, list.size()));
+    
+    for (ArrayList<String> activeList : getUniqueListForSuggestions(rest)) {
+      ArrayList<String> newList = new ArrayList<String>();
+      newList.add(head);
+      newList.addAll(activeList);
+      lists.add(newList);
+      lists.add(activeList);
+    }
+    return lists;
+  }
+  
+  public static ArrayList<ArrayList<String>> getNonEmptyUniqueLists(List<String> list){
+    ArrayList<ArrayList<String>> lists = getUniqueListForSuggestions(list);
+    // remove empty list from the power set 
+    for (ArrayList<String> emptyList : lists ){
+      if ( emptyList.isEmpty() ) {
+        lists.remove(emptyList);
+        break;
+      }
+    }
+    return lists;
+  }
+
+  public static List<List<String>> getListPermutations(List<String> list) {
+    List<String> inputList = new ArrayList<String>();
+    inputList.addAll(list);
+    if (inputList.size() == 0) {
+      List<List<String>> result = new ArrayList<List<String>>();
+      result.add(new ArrayList<String>());
+      return result;
+    }
+
+    List<List<String>> listOfLists = new ArrayList<List<String>>();
+
+    String firstElement = inputList.remove(0);
+
+    List<List<String>> recursiveReturn = getListPermutations(inputList);
+    for (List<String> li : recursiveReturn) {
+
+      for (int index = 0; index <= li.size(); index++) {
+        List<String> temp = new ArrayList<String>(li);
+        temp.add(index, firstElement);
+        listOfLists.add(temp);
+      }
+
+    }
+    return listOfLists;
+  }
+
+}