enumtype.java

一个java工作流引擎

package org.jbpm.persistence.hibernate;

import java.sql.*;
import org.jbpm.util.lang.*;
import org.jbpm.util.log.*;
import org.jbpm.model.definition.EventType;
import org.jbpm.model.definition.impl.*;
import org.jbpm.service.*;
import net.sf.hibernate.*;
import net.sf.hibernate.type.*;

public class EnumType extends ImmutableType implements Type {
  
  public static class EventTypeType     extends EnumType { public EventTypeType()     { super(EventType.class, Types.VARCHAR); } }
  public static class DefaultTypeType   extends EnumType { public DefaultTypeType()   { super(DefaultType.class, Types.VARCHAR); } }
  public static class ServiceMethodType extends EnumType { public ServiceMethodType() { super(ServiceMethod.class, Types.VARCHAR); } }
  public static class LevelType         extends EnumType { public LevelType()         { super(Level.class, Types.INTEGER); } }
  
  private Class enumClazz = null;
  private int idType = -1;
  
  public EnumType( Class enumClazz, int idType ) {
    this.enumClazz = enumClazz;
    this.idType = idType;
  }

	public Object get(ResultSet rs, String name) throws HibernateException, SQLException {
    Enum enum = null;

    Object id = rs.getObject(name);
    if ( id != null ) {
      enum = Enum.findById( enumClazz, id );
    } 

    return enum;
  }

	public void set(PreparedStatement st, Object value, int index) throws HibernateException, SQLException {
    st.setObject( index, ((Enum)value).getId() );
	}

	public int sqlType() {
		return idType;
	}

	public String toString(Object value) throws HibernateException {
    String text = null;
    if ( value != null ) {
      text = ((Enum)value).getId().toString();
    }
		return text;
	}

	public Object fromStringValue(String xml) throws HibernateException {
		return Enum.findById( enumClazz, xml );
	}

	public Class getReturnedClass() {
		return enumClazz;
	}

	public boolean equals(Object x, Object y) throws HibernateException {
		return (x==y);
	}

	public String getName() {
		return enumClazz.getName();
	}
}