Ejemplo n.º 1
0
  /**
   * 执行一个特殊的Chain(事实上普通Chain也能执行,但不建议使用)
   *
   * @see org.nutz.dao.Chain#addSpecial(String, Object)
   */
  @SuppressWarnings({"rawtypes"})
  public static void insertBySpecialChain(Dao dao, Entity en, String tableName, Chain chain) {
    if (en != null) tableName = en.getTableName();
    if (tableName == null) throw Lang.makeThrow(DaoException.class, "tableName and en is NULL !!");
    final StringBuilder sql = new StringBuilder("INSERT INTO ").append(tableName).append(" (");
    StringBuilder _value_places = new StringBuilder(" VALUES(");
    final List<Object> values = new ArrayList<Object>();
    final List<ValueAdaptor> adaptors = new ArrayList<ValueAdaptor>();
    Chain head = chain.head();
    while (head != null) {
      String colName = head.name();
      MappingField mf = null;
      if (en != null) {
        mf = en.getField(colName);
        if (mf != null) colName = mf.getColumnName();
      }
      sql.append(colName);

      if (head.special()) {
        _value_places.append(head.value());
      } else {
        if (en != null) mf = en.getField(head.name());
        _value_places.append("?");
        values.add(head.value());
        ValueAdaptor adaptor = Jdbcs.getAdaptorBy(head.value());
        if (mf != null && mf.getAdaptor() != null) adaptor = mf.getAdaptor();
        adaptors.add(adaptor);
      }

      head = head.next();
      if (head != null) {
        sql.append(", ");
        _value_places.append(", ");
      }
    }
    sql.append(")");
    _value_places.append(")");
    sql.append(_value_places);
    if (log.isDebugEnabled()) log.debug(sql);
    dao.run(
        new ConnCallback() {
          public void invoke(Connection conn) throws Exception {
            PreparedStatement ps = conn.prepareStatement(sql.toString());
            try {
              for (int i = 0; i < values.size(); i++) adaptors.get(i).set(ps, values.get(i), i + 1);
              ps.execute();
            } finally {
              Daos.safeClose(ps);
            }
          }
        });
  }
Ejemplo n.º 2
0
 /**
  * 执行一个特殊的Chain(事实上普通Chain也能执行,但不建议使用)
  *
  * @see org.nutz.dao.Chain#addSpecial(String, Object)
  */
 @SuppressWarnings({"rawtypes"})
 public static int updateBySpecialChain(
     Dao dao, Entity en, String tableName, Chain chain, Condition cnd) {
   if (en != null) tableName = en.getTableName();
   if (tableName == null) throw Lang.makeThrow(DaoException.class, "tableName and en is NULL !!");
   final StringBuilder sql = new StringBuilder("UPDATE ").append(tableName).append(" SET ");
   Chain head = chain.head();
   final List<Object> values = new ArrayList<Object>();
   final List<ValueAdaptor> adaptors = new ArrayList<ValueAdaptor>();
   while (head != null) {
     MappingField mf = null;
     if (en != null) mf = en.getField(head.name());
     String colName = head.name();
     if (mf != null) colName = mf.getColumnName();
     sql.append(colName).append("=");
     if (head.special()) {
       if (head.value() != null && head.value() instanceof String) {
         String str = (String) head.value();
         if (str.length() > 0) {
           switch (str.charAt(0)) {
             case '+':
             case '-':
             case '*':
             case '/':
             case '%':
             case '&':
             case '^':
             case '|':
               sql.append(colName);
               break;
           }
         }
       }
       sql.append(head.value());
     } else {
       sql.append("?");
       values.add(head.value());
       ValueAdaptor adaptor = Jdbcs.getAdaptorBy(head.value());
       if (mf != null && mf.getAdaptor() != null) adaptor = mf.getAdaptor();
       adaptors.add(adaptor);
     }
     sql.append(" ");
     head = head.next();
     if (head != null) sql.append(", ");
   }
   if (cnd != null) sql.append(" ").append(cnd.toSql(en));
   if (log.isDebugEnabled()) log.debug(sql);
   final int[] ints = new int[1];
   dao.run(
       new ConnCallback() {
         public void invoke(Connection conn) throws Exception {
           PreparedStatement ps = conn.prepareStatement(sql.toString());
           try {
             for (int i = 0; i < values.size(); i++) adaptors.get(i).set(ps, values.get(i), i + 1);
             ints[0] = ps.executeUpdate();
           } finally {
             Daos.safeClose(ps);
           }
         }
       });
   return ints[0];
 }