adding calculation prequirements for accepting strings

ArtificialAutism/src/main/java/DataLayer/DataMapper.java

@@ -7,6 +7,7 @@ package DataLayer;
 
 import FunctionLayer.SimilarityMatrix;
 import FunctionLayer.CustomError;
+import com.google.common.collect.MapMaker;
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
@@ -50,8 +51,8 @@ public class DataMapper {
         }
     }
 
-    public static List<String> getAllStrings() throws CustomError {
-        List<String> str = new ArrayList();
+    public static ConcurrentMap<Integer, String> getAllStrings() throws CustomError {
+        ConcurrentMap<Integer, String> allStrings = new MapMaker().concurrencyLevel(2).makeMap();
         Connection l_cCon = null;
         PreparedStatement l_pStatement = null;
         ResultSet l_rsSearch = null;
@@ -62,15 +63,17 @@ public class DataMapper {
                     java.sql.ResultSet.CONCUR_READ_ONLY);
             l_pStatement.setFetchSize(Integer.MIN_VALUE);
             l_rsSearch = l_pStatement.executeQuery();
+            int ij = 0;
             while (l_rsSearch.next()) {
-                str.add(l_rsSearch.getString(1));
+                allStrings.put(ij, l_rsSearch.getString(1));
+                ij++;
             }
         } catch (SQLException ex) {
             throw new CustomError("failed in DataMapper  " + ex.getMessage());
         } finally {
             CloseConnections(l_pStatement, l_rsSearch, l_cCon);
         }
-        return str;
+        return allStrings;
     }
 
     public static void InsertMYSQLStrings(ConcurrentMap<Integer, String> str) throws CustomError {