/*************************************************************************** CField.c (c) 2000-2012 Benoît Minisini This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. This program 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. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. ***************************************************************************/ #define __CFIELD_C #include "main.h" #include "CField.h" static int valid_field(CFIELD *_object) { return !THIS->table || !THIS->table->conn || !THIS->table->conn->db.handle; } static bool exist_field(CTABLE *table, const char *name) { DB_FIELD *fp; if (!name || !*name) return FALSE; if (table->create) { for (fp = table->new_fields; fp; fp = fp->next) { if (!strcmp(fp->name, name)) return TRUE; } return FALSE; } else return table->driver->Field.Exist(&table->conn->db, table->name, (char *)name); } static bool check_field(CTABLE *table, char *name, bool must_exist) { bool exist = exist_field(table, name); if (must_exist) { if (!exist) { GB.Error("Unknown field: &1.&2", table->name, name); return TRUE; } } else { if (exist) { GB.Error("Field already exists: &1.&2", table->name, name); return TRUE; } } return FALSE; } static bool check_type(int type) { if (type == GB_T_BOOLEAN || type == GB_T_INTEGER || type == GB_T_LONG || type == GB_T_FLOAT || type == GB_T_DATE || type == GB_T_STRING || type == DB_T_SERIAL || type == DB_T_BLOB) return FALSE; GB.Error("Bad field type"); return TRUE; } static CFIELD *make_field(CTABLE *table, const char *name, bool must_exist) { CFIELD *_object; if (check_field(table, (char *)name, must_exist)) return NULL; _object = GB.New(GB.FindClass("Field"), NULL, NULL); THIS->table = table; THIS->driver = table->conn->driver; THIS->name = GB.NewZeroString(name); return _object; } void CFIELD_free_info(DB_FIELD *info) { GB.FreeString(&info->name); GB.StoreVariant(NULL, &info->def); info->type = GB_T_NULL; info->length = 0; } static void add_new_field(CTABLE *table, DB_FIELD *field) { DB_FIELD **fp; fp = &table->new_fields; for(;;) { if (!*fp) { *fp = field; field->next = NULL; return; } fp = &((*fp)->next); } } void *CFIELD_get(CTABLE *table, const char *name) { CFIELD *field = make_field(table, name, TRUE); table->driver->Field.Info(&table->conn->db, table->name, (char *)name, &field->info); return field; } int CFIELD_exist(CTABLE *table, const char *name) { return exist_field(table, name); } void CFIELD_list(CTABLE *table, char ***list) { table->driver->Field.List(&table->conn->db, table->name, list); } void CFIELD_release(CTABLE *table, void *_object) { THIS->table = NULL; } /*************************************************************************** Field ***************************************************************************/ BEGIN_METHOD_VOID(CFIELD_free) if (!valid_field(THIS)) GB.SubCollection.Remove(THIS->table->fields, THIS->name, 0); GB.FreeString(&THIS->name); CFIELD_free_info(&THIS->info); END_METHOD /*BEGIN_METHOD_VOID(CFIELD_delete) THIS->table->conn->driver->User.Delete(THIS->conn->handle, THIS->name); END_METHOD*/ BEGIN_PROPERTY(CFIELD_name) GB.ReturnString(THIS->name); END_PROPERTY BEGIN_PROPERTY(CFIELD_type) GB.ReturnInteger(THIS->info.type); END_PROPERTY BEGIN_PROPERTY(CFIELD_length) GB.ReturnInteger(THIS->info.length); END_PROPERTY BEGIN_PROPERTY(CFIELD_default) GB.ReturnVariant(&THIS->info.def); END_PROPERTY BEGIN_PROPERTY(CFIELD_table) GB.ReturnObject(THIS->table); END_PROPERTY GB_DESC CFieldDesc[] = { GB_DECLARE("Field", sizeof(CFIELD)), GB_NOT_CREATABLE(), GB_HOOK_CHECK(valid_field), GB_METHOD("_free", NULL, CFIELD_free, NULL), //GB_METHOD("Delete", NULL, CFIELD_delete, NULL), GB_PROPERTY_READ("Name", "s", CFIELD_name), GB_PROPERTY_READ("Type", "i", CFIELD_type), GB_PROPERTY_READ("Length", "i", CFIELD_length), GB_PROPERTY_READ("Default", "v", CFIELD_default), GB_PROPERTY_READ("Table", "Table", CFIELD_table), GB_END_DECLARE }; /*************************************************************************** .Table.Fields ***************************************************************************/ #undef THIS #define THIS ((GB_SUBCOLLECTION)_object) BEGIN_METHOD(CFIELD_add, GB_STRING name; GB_INTEGER type; GB_INTEGER length; GB_VARIANT def) CTABLE *table = GB.SubCollection.Container(THIS); char *name = GB.ToZeroString(ARG(name)); DB_FIELD new_field, *info; if (!table->create) { GB.Error("Table already exists"); return; } if (DB_CheckName(name, "field")) return; if (check_field(table, name, FALSE)) return; /*field = make_field(table, name, FALSE); if (!field) return; GB.SubCollection.Add(THIS, STRING(name), LENGTH(name), field);*/ new_field.next = NULL; new_field.type = VARG(type); if (check_type(new_field.type)) return; new_field.length = VARGOPT(length, 0); if (new_field.length < 0) new_field.length = 0; else if (new_field.length > 65535) new_field.length = 65535; /*field->info = new_field;*/ GB.Alloc(POINTER(&info), sizeof(DB_FIELD)); info->next = NULL; info->type = new_field.type; info->length = new_field.length; info->def.type = GB_T_NULL; if (!MISSING(def)) GB.StoreVariant(ARG(def), &info->def); info->name = GB.NewString(STRING(name), LENGTH(name)); //DB_LowerString(info->name); add_new_field(table, info); END_METHOD GB_DESC CTableFieldsDesc[] = { GB_DECLARE(".Table.Fields", 0), GB_INHERITS(".SubCollection"), GB_METHOD("Add", NULL, CFIELD_add, "(Name)s(Type)i[(Length)i(Default)v]"), //GB_METHOD("Remove", NULL, CFIELD_remove, "(Name)s"), GB_END_DECLARE };