Re: Update vlastnosti typu UserType v Hibernate 2.1

Mon, 06 Nov 2006 02:11:49 -0800 

mapovani je zde:

                <property name="status" column="status"
type="cz.venturia.imagebank.hibernate.UserStatusUserType" not-null="true" update="false" /> 





Dne Mon, 06 Nov 2006 11:07:16 +0100 Jiří Mareš <[EMAIL PROTECTED]>  
napsal/-a:




A jak vypada mapovani ?? Pouzil jsi tvuj user-type jako "type"??

Vlastimil Vávrů napsal(a):



Zdravím konferenci,

chci se zeptat zda někdo z vás již pracovat s UserType v Hiberenatu.
Používám jej pro status uživatele. Viz:

package cz.venturia.imagebank;

import java.io.Serializable;
import java.util.HashMap;
import java.util.Map;

public class UserStatus implements Serializable {
    private static final long serialVersionUID = 11 * Long.MIN_VALUE;

    private String name;

    public static final UserStatus ENABLED = new UserStatus("ENABLED");

    public static final UserStatus DISABLED = new  
UserStatus("DISABLED");

    public static final UserStatus NOT_APPROVED = new
UserStatus("NOT_APPROVED");
    private static final Map INSTANCES = new HashMap();

    static {
        INSTANCES.put(ENABLED.toString(), ENABLED);
        INSTANCES.put(DISABLED.toString(), DISABLED);
        INSTANCES.put(NOT_APPROVED.toString(), NOT_APPROVED);
    }

    private UserStatus(String name) {
        this.name = name;
    }

    public String toString() {
        return name;
    }

    private Object readResolve() {
        return getInstance(name);
    }

    public static UserStatus getInstance(String name) {
        return (UserStatus) INSTANCES.get(name);
    }
}

UserStatusType trida vypada takto:

package cz.venturia.imagebank.hibernate;

import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;

import net.sf.hibernate.HibernateException;
import net.sf.hibernate.UserType;
import cz.venturia.imagebank.UserStatus;

public class UserStatusUserType implements UserType {

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

    public Object deepCopy(Object value) throws HibernateException {
        return value;
    }


    public boolean equals(Object x, Object y) throws HibernateException  
{

        return x == y;
    }

    public boolean isMutable() {
        return true;
    }

    public Object nullSafeGet(ResultSet rs, String[] names, Object
owner) throws HibernateException, SQLException {
        String name = rs.getString(names[0]);
        return rs.wasNull() ? null : UserStatus.getInstance(name);
    }

    public void nullSafeSet(PreparedStatement st, Object value, int
index) throws HibernateException, SQLException {
        if (value == null) {
            st.setNull(index, Types.VARCHAR);
        } else {
            st.setString(index, value.toString());
        }
    }

    public Class returnedClass() {
        return UserStatus.class;
    }

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

Zkusil jsem dal breakpointy do vsech metod ve tride UserTypeStatus - pri
startu aplikace se zavola pouze sqlTypes a returnedClass.

Pri cteni ani ukladani se jiz nevola zadna metoda.

Zvlastni je, ze pri vytvareni uzivatele (registraci) se status nastavi
(na NOT_APPROVED)


Dík za rady.





























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