package mypackage;

import java.sql.Types;

import middlegen.javax.JavaColumn;
import middlegen.javax.Sql2Java;
import middlegen.plugins.hibernate.interfaces.JavaTypeMapper;

/**
* This class provides (one possible) implementation of a Java Type mapper for
* the Middlegen plugin. This class is configured by the ant script by providing
* the HibernateJavaTypeMapper as a preference to using Middlegen's exclusively.
* Once a mapping has been determined or updated by the user through the GUI
* then this mapper will not override the result.
*
* @author Daniel Rosenbaum and David Channon
* @created 24 December 2003
* @version 2.1
*/
public class MyHibernateJavaTypeMapper implements JavaTypeMapper {

   /**
   * Describe what the HibernateJavaTypeMapper constructor does
   *
   * @todo-javadoc Write javadocs for constructor
   */
   public MyHibernateJavaTypeMapper() {
      System.out.println("This will be printed");
   }


   /**
   * Gets the PreferredJavaType attribute of the HibernateJavaTypeMapper object
   *
   * @param column Describe what the parameter does
   * @return The PreferredJavaType value
   * @todo-javadoc Write javadocs for method parameter
   */
   public String getPreferredJavaType(JavaColumn column) {
      
        System.out.println("This won't be printed");
      
     int sqlType = column.getSqlType();
     int size = column.getSize();
     int decimalDigits = column.getDecimalDigits();
     boolean nullable = column.isNullable();

     String result = null;
     if ((sqlType == Types.DECIMAL || sqlType == Types.NUMERIC) && decimalDigits == 0) {
       if (size < 10) {
         result = "int";
       }
       else if (size < 19) {
         result = "long";
       }
       else {
         result = "java.math.BigDecimal";
       }
     }
     else {
       // if not any of above get the default
       result = Sql2Java.getPreferredJavaType(sqlType, size, decimalDigits);
       if (result == null) {
         result = "java.lang.Object";
       }
     }

     // if the column is nullable make sure it is not a primitive.
     // Its best practice not to use primitives in primary keys.
       if ("int".equals(result) ||
            "short".equals(result) ||
            "long".equals(result) ||
            "byte".equals(result) ||
            "float".equals(result) ||
            "boolean".equals(result) ||
            "double".equals(result)) {
         result = Sql2Java.getClassForPrimitive(result);
       }
     return result;
   }
}