gbkstring.java

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package book.jsj0707.gbk;

import java.io.Serializable;     
import java.io.UnsupportedEncodingException;     
import java.sql.PreparedStatement;     
import java.sql.ResultSet;     
import java.sql.SQLException;     
    
import oracle.jdbc.driver.OracleTypes;     
import org.apache.commons.lang.builder.HashCodeBuilder;     
import org.hibernate.HibernateException;     
import org.hibernate.usertype.UserType;     

 public class GBKString implements UserType {     
     
     public GBKString() {     
         super();     
     }     
     
     public int[] sqlTypes() {     
         return new int[] { OracleTypes.VARCHAR };     
     }     
     
     public Class returnedClass() {     
         return String.class;     
     }     
     
     public boolean equals(Object x, Object y) throws HibernateException {     
         return (x == y) || (x != null && y != null && (x.equals(y)));     
     }     
     
     public Object nullSafeGet(ResultSet rs, String[] names, Object owner) throws HibernateException,     
             SQLException {     
         String val = rs.getString(names[0]);     
         if (null == val) {     
             return null;     
         } else {     
             try {     
                 val = new String(val.getBytes("iso-8859-1"), "GBK");     
             } catch (UnsupportedEncodingException e) {     
                 throw new HibernateException(e.getMessage());     
             }     
             return val;     
         }     
     }     
     
     public void nullSafeSet(PreparedStatement st, Object value, int index) throws HibernateException,     
             SQLException {     
         if (value == null) {     
             st.setNull(index, OracleTypes.VARCHAR);     
         } else {     
             String val = (String)value;     
             try {     
                 val = new String(val.getBytes("GBK"), "iso-8859-1");     
             } catch (UnsupportedEncodingException e) {     
                 throw new HibernateException(e.getMessage());     
             }     
             st.setObject(index, val, OracleTypes.VARCHAR);     
         }     
     }     
     
     public Object deepCopy(Object value) throws HibernateException {     
         if (value == null)     
             return null;     
         return new String((String) value);     
     }     
     
     public boolean isMutable() {     
         return false;     
     }     
     
     public Object assemble(Serializable arg0, Object arg1) throws HibernateException {     
         // TODO Auto-generated method stub     
         return null;     
     }     
     
     public Serializable disassemble(Object arg0) throws HibernateException {     
         // TODO Auto-generated method stub     
         return null;     
     }     
     
     public int hashCode(Object arg0) throws HibernateException {     
         return HashCodeBuilder.reflectionHashCode(this);     
     }     
     
     public Object replace(Object arg0, Object arg1, Object arg2) throws HibernateException {     
         // TODO Auto-generated method stub     
         return null;     
     }     
 }