Fix bug for losing data when upgrading db if model field has uppercase character.

core/src/main/java/org/litepal/tablemanager/model/TableModel.java

@@ -16,6 +16,8 @@
 
 package org.litepal.tablemanager.model;
 
+import org.litepal.util.BaseUtility;
+
 import java.util.Collection;
 import java.util.HashMap;
 import java.util.Map;
@@ -89,7 +91,7 @@ public class TableModel {
      *            A column model contains name, type and constraints.
      */
     public void addColumnModel(ColumnModel columnModel) {
-        columnModelMap.put(columnModel.getColumnName(), columnModel);
+        columnModelMap.put(BaseUtility.changeCase(columnModel.getColumnName()), columnModel);
     }
 
     /**
@@ -107,7 +109,7 @@ public class TableModel {
      * @return A ColumnModel which can map the column name passed in. Or null.
      */
     public ColumnModel getColumnModelByName(String columnName) {
-        return columnModelMap.get(columnName);
+        return columnModelMap.get(BaseUtility.changeCase(columnName));
     }
 
     /**
@@ -116,7 +118,7 @@ public class TableModel {
      *          Name of the column to remove.
      */
     public void removeColumnModelByName(String columnName) {
-        columnModelMap.remove(columnName);
+        columnModelMap.remove(BaseUtility.changeCase(columnName));
     }
 
     /**
@@ -126,7 +128,7 @@ public class TableModel {
      * @return True if matches a column in the table model. False otherwise.
      */
     public boolean containsColumn(String columnName) {
-        return columnModelMap.containsKey(columnName);
+        return columnModelMap.containsKey(BaseUtility.changeCase(columnName));
     }
 
 }