package my.package;
import java.io.Serializable;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;
import java.util.Arrays;

import org.hibernate.Hibernate;
import org.hibernate.HibernateException;
import org.hibernate.usertype.UserType;

/**
* Fixes the build-in Hibernate CharArray type.<br />
* See <a href="http://opensource.atlassian.com/projects/hibernate/browse/HHH-2606">Jira issue</a>
*/
public class CharArrayType implements UserType {

   private static final int[] SQL_TYPES = { Types.VARCHAR };

   public int[] sqlTypes() {
      return SQL_TYPES;
   }

   public Class returnedClass() {
      return char[].class;
   }

   public Object nullSafeGet(ResultSet resultSet, String[] names, Object owner)
         throws HibernateException, SQLException {
      String value = (String) Hibernate.STRING.nullSafeGet(resultSet, names);
      return value != null ? value.toCharArray() : null;
   }

   public void nullSafeSet(PreparedStatement preparedStatement, Object value,
         int index) throws HibernateException, SQLException {
      Hibernate.STRING.nullSafeSet(preparedStatement,
            value != null ? new String((char[]) value) : null, index);
   }

   public Object deepCopy(Object value) throws HibernateException {
      if(value == null){
         return null;
      }
      char[] chars = (char[]) value;
      char[] copy = new char[chars.length];
      System.arraycopy(chars, 0, copy, 0, chars.length);
      return copy;
   }

   public boolean isMutable() {
      return true;
   }

   public Object assemble(Serializable cached, Object owner)
         throws HibernateException {
      return cached;
   }

   public Serializable disassemble(Object value) throws HibernateException {
      return (Serializable) value;
   }

   public Object replace(Object original, Object target, Object owner)
         throws HibernateException {
      return original;
   }

   public int hashCode(Object x) throws HibernateException {
      return x.hashCode();
   }

   public boolean equals(Object x, Object y) throws HibernateException {
      return Arrays.equals((char[]) x, (char[]) y);
   }
}