pike.git/ lib/ modules/ __builtin.pmod/ Sql.pmod/ Connection.pike

2016-04-02

2016-04-02 10:16:11 by Henrik Grubbström (Grubba) <grubba@grubba.org>

• 56dff331269e84b5aabcf2e5f04224782e2f06a0 (41 lines) (+41/-0) ^{[ Show | Annotate ]}
  Branch: 8.1

__builtin.Sql.Connection: Added emulate_bindings().

434:    return q;   }    + //! Build a raw SQL query, given the cooked query and the variable bindings + //! It's meant to be used as an emulation engine for those drivers not + //! providing such a behaviour directly (i.e. Oracle). + //! The raw query can contain some variables (identified by prefixing + //! a colon to a name or a number (i.e. ":var" or ":2"). They will be + //! replaced by the corresponding value in the mapping. + //! + //! @param query + //! The query. + //! + //! @param bindings + //! Mapping containing the variable bindings. Make sure that + //! no confusion is possible in the query. If necessary, change the + //! variables' names. + protected string emulate_bindings(string query, +  mapping(string|int:mixed) bindings) + { +  array(string)k, v; +  v = map(values(bindings), +  lambda(mixed m) { +  if(undefinedp(m)) +  return "NULL"; +  if (objectp (m) && m->is_val_null) +  // Note: Could need bug compatibility here - in some cases +  // we might be passed a null object that can be cast to +  // "", and before this it would be. This is an observed +  // compat issue in comment #7 in [bug 5900]. +  return "NULL"; +  if(multisetp(m)) +  return sizeof(m) ? indices(m)[0] : ""; +  return "'"+(intp(m)?(string)m:quote((string)m))+"'"; +  }); +  // Throws if mapping key is empty string. +  k = map(indices(bindings),lambda(string s){ +  return ( (stringp(s)&&s[0]==':') ? +  s : ":"+s); +  }); +  return replace(query,k,v); + } +    //! Handle @[sprintf]-based quoted arguments   //!   //! @param query