operationstyletype.java

jbpm-bpel-1.1.Beta3 JBoss jBPM Starters Kit 是一个综合包

/*
 * JBoss, Home of Professional Open Source
 * Copyright 2005, JBoss Inc., and individual contributors as indicated
 * by the @authors tag.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the JBPM BPEL PUBLIC LICENSE AGREEMENT as
 * published by JBoss Inc.; either version 1.0 of the License, or
 * (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 */
package org.jbpm.bpel.db.type;

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

import javax.wsdl.OperationType;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.Hibernate;
import org.hibernate.HibernateException;
import org.hibernate.usertype.UserType;

/**
 * Maps a commons-lang <code>Enum</code> to a Hibernate type.
 * @author Juan Cantu
 * @version $Revision: 1.3 $ $Date: 2006/09/27 03:53:02 $
 */
public class OperationStyleType implements UserType {

  private static final int[] SQLTYPES = { Types.INTEGER };
  private static final Log log = LogFactory.getLog(OperationStyleType.class);

  private static final OperationType OPERATION_TYPES[] = {
      OperationType.REQUEST_RESPONSE, OperationType.ONE_WAY,
      OperationType.SOLICIT_RESPONSE, OperationType.NOTIFICATION };

  public boolean equals(Object o1, Object o2) {
    return o1 == null ? o2 == null : o1.equals(o2);
  }

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

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

  public boolean isMutable() {
    return false;
  }

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

  public Object assemble(Serializable s, Object o) throws HibernateException {
    return s;
  }

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

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

  public Object nullSafeGet(ResultSet rs, String[] names, Object owner)
      throws HibernateException, SQLException {
    final String columnName = names[0];
    final Integer typeCode = (Integer) Hibernate.INTEGER.nullSafeGet(rs,
        columnName);
    OperationType operationType = typeCode != null ? fromInt(typeCode.intValue())
        : null;
    if (log.isTraceEnabled())
      log.trace("returning '" + operationType + "' as column: " + columnName);
    return operationType;
  }

  public void nullSafeSet(PreparedStatement st, Object value, int index)
      throws HibernateException, SQLException {
    if (value == null) {
      st.setNull(index, SQLTYPES[0]);
      if (log.isTraceEnabled())
        log.trace("binding null to parameter: " + index);
    }
    else {
      final int typeCode = toInt((OperationType) value);
      st.setInt(index, typeCode);
      if (log.isTraceEnabled())
        log.trace("binding '" + typeCode + "' to parameter: " + index);
    }
  }

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

  public static int toInt(OperationType operationType) {
    for (int i = 0; i < OPERATION_TYPES.length; i++)
      if (OPERATION_TYPES[i].equals(operationType))
        return i;
    throw new IllegalArgumentException("unknown operation type: "
        + operationType);
  }

  public static OperationType fromInt(int code) {
    if (code < 0 || code >= OPERATION_TYPES.length)
      throw new IllegalArgumentException("unknown operation type code: " + code);
    return OPERATION_TYPES[code];
  }
}