added support for non nullable language types

src/com/rthoni/intellij/codefromds/business/Generator.java

 import com.rthoni.intellij.codefromds.dbo.template.DataSourceDbo;
 import com.rthoni.intellij.codefromds.dbo.template.ForeignKeyDbo;
 import com.rthoni.intellij.codefromds.dbo.template.TableDataSourceDbo;
+import org.json.JSONArray;
 import org.json.JSONObject;
 import org.jtwig.JtwigModel;
 import org.jtwig.JtwigTemplate;
 
         return dbo;
     }
-    
+
     public static String convertSqlType(DataType type, TypesCastOptions options)
     {
         boolean isArray = type.typeName.endsWith("[]");
         dbo.setName(columnSelection.getColumn().getName());
         dbo.setPrimary(DasUtil.isPrimary(columnSelection.getColumn()));
         dbo.setSelected(columnSelection.isSelected());
+        dbo.setNotNull(columnSelection.getColumn().isNotNull());
         dbo.setType(convertSqlType(columnSelection.getColumn().getDataType(), options));
+        dbo.setTypeNotNull(options.getNonNullableTypes().contains(dbo.getType()));
 
         return dbo;
     }
         }
         dbo.setTypes(map);
 
+        List<String> nonNullableTypes = new Vector<>();
+        JSONArray array = obj.getJSONArray("non-nullable-types");
+        for (int i = 0; i < array.length(); ++i) {
+            nonNullableTypes.add(array.getString(i));
+        }
+        dbo.setNonNullableTypes(nonNullableTypes);
+
         dbo.setArrayTemplate(obj.getString("arrayTemplate"));
 
         return dbo;

src/com/rthoni/intellij/codefromds/dbo/options/TypesCastOptions.java

 package com.rthoni.intellij.codefromds.dbo.options;
 
 import java.util.HashMap;
+import java.util.List;
 
 /**
  * Created by robin on 11/19/16.
 
     private HashMap<String, HashMap<String, String>> _types;
 
+    private List<String> _nonNullableTypes;
+
     public String getArrayTemplate() {
         return _arrayTemplate;
     }
     public void setTypes(HashMap<String, HashMap<String, String>> types) {
         _types = types;
     }
+
+    public List<String> getNonNullableTypes() {
+        return _nonNullableTypes;
+    }
+
+    public void setNonNullableTypes(List<String> nonNullableTypes) {
+        _nonNullableTypes = nonNullableTypes;
+    }
 }

src/com/rthoni/intellij/codefromds/dbo/template/ColumnDataSourceDbo.java

 
     private String _type;
 
+    private boolean _notNull;
+
+    private boolean _typeNotNull;
+
     public String getName() {
         return _name;
     }
     public void setType(String type) {
         _type = type;
     }
+
+    public boolean isNotNull() {
+        return _notNull;
+    }
+
+    public void setNotNull(boolean notNull) {
+        _notNull = notNull;
+    }
+
+    public boolean isTypeNotNull() {
+        return _typeNotNull;
+    }
+
+    public void setTypeNotNull(boolean typeNotNull) {
+        _typeNotNull = typeNotNull;
+    }
 }