解决了！
果然不出所料：开发了一对UserType。如果有人需要，我会发布代码：
TipoNodoUserType
package com.mycompany.usertype;
import java.io.Serializable;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;
import java.util.Objects;
import org.hibernate.HibernateException;
import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.type.descriptor.java.ShortTypeDescriptor;
import org.hibernate.usertype.UserType;
public class TipoNodoUserType implements UserType {
public static final TipoNodoUserType INSTANCE = new TipoNodoUserType();
@Override
public int[] sqlTypes() {
return new int[] {Types.TINYINT};
}
@SuppressWarnings("rawtypes")
@Override
public Class returnedClass() {
return Short.class;
}
@Override
public boolean equals(Object x, Object y) throws HibernateException {
return Objects.equals(x, y);
}
@Override
public int hashCode(Object x) throws HibernateException {
return Objects.hashCode(x);
}
@Override
public Object nullSafeGet(ResultSet rs, String[] names, SessionImplementor session, Object owner)
throws HibernateException, SQLException {
String columnName = names[0];
Short columnValue = (Short) rs.getObject(columnName);
return columnValue == null ? null : columnValue;
}
@Override
public void nullSafeSet(PreparedStatement st, Object value, int index, SessionImplementor session)
throws HibernateException, SQLException {
if(value == null){
st.setNull( index, Types.TINYINT );
}else{
String stringValue = ShortTypeDescriptor.INSTANCE.toString((Short)value);
st.setString(index, stringValue);
}
}
@Override
public Object deepCopy(Object value) throws HibernateException {
return value;
}
@Override
public boolean isMutable() {
return true;
}
@Override
public Serializable disassemble(Object value) throws HibernateException {
return (Serializable) value;
}
@Override
public Object assemble(Serializable cached, Object owner) throws HibernateException {
return cached;
}
@Override
public Object replace(Object original, Object target, Object owner) throws HibernateException {
return original;
}
}
坐标用户类型
package com.mycompany.usertype;
import java.io.Serializable;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;
import java.util.Objects;
import org.hibernate.HibernateException;
import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.type.descriptor.java.FloatTypeDescriptor;
import org.hibernate.usertype.UserType;
public class CoordenadaUserType implements UserType {
public static final CoordenadaUserType INSTANCE = new CoordenadaUserType();
@Override
public int[] sqlTypes() {
return new int[] {Types.REAL};
}
@SuppressWarnings("rawtypes")
@Override
public Class returnedClass() {
return Float.class;
}
@Override
public boolean equals(Object x, Object y) throws HibernateException {
return Objects.equals(x, y);
}
@Override
public int hashCode(Object x) throws HibernateException {
return Objects.hashCode(x);
}
@Override
public Object nullSafeGet(ResultSet rs, String[] names, SessionImplementor session, Object owner)
throws HibernateException, SQLException {
String columnName = names[0];
Float columnValue = (Float) rs.getObject(columnName);
return columnValue == null ? null : columnValue;
}
@Override
public void nullSafeSet(PreparedStatement st, Object value, int index, SessionImplementor session)
throws HibernateException, SQLException {
if(value == null){
st.setNull( index, Types.REAL );
}else{
String stringValue = FloatTypeDescriptor.INSTANCE.toString((Float)value);
st.setString(index, stringValue);
}
}
@Override
public Object deepCopy(Object value) throws HibernateException {
return value;
}
@Override
public boolean isMutable() {
return true;
}
@Override
public Serializable disassemble(Object value) throws HibernateException {
return (Serializable) value;
}
@Override
public Object assemble(Serializable cached, Object owner) throws HibernateException {
return cached;
}
@Override
public Object replace(Object original, Object target, Object owner) throws HibernateException {
return original;
}
}
StopDTO
@Entity
@Table(name = "Nodos")
public class StopDTO implements java.io.Serializable{
/*
* Atributos
*/
private static final long serialVersionUID = 8171715812406080593L;
@Id
@Column(name = "Id", insertable = false, updatable = false)
private Integer id;
@Id
@Column(name = "Tipo", insertable = false, updatable = false)
@Type(type = "com.mycompany.usertype.TipoNodoUserType")
private Short tipo;
@Column(name = "Nombre", insertable = false, updatable = false)
private String nombre;
@Column(name = "PosX", insertable = false, updatable = false)
@Type(type = "com.mycompany.usertype.CoordenadaUserType")
private Float posx;
@Column(name = "PosY", insertable = false, updatable = false)
@Type(type = "com.mycompany.usertype.CoordenadaUserType")
private Float posy;
@Column(name = "Label", insertable = false, updatable = false)
private String label;
...
// Don't forget to code an empty constructor, setters/getters for every attribute and implementing hashCode and equals methods (as we're implementing Serializable interface).