Annotation of parser3/src/classes/void.C, revision 1.48
1.1 parser 1: /** @file
2: Parser: @b VOID parser class.
3:
1.42 misha 4: Copyright (c) 2001-2009 ArtLebedev Group (http://www.artlebedev.com)
1.16 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.20 paf 6: */
1.1 parser 7:
1.48 ! moko 8: static const char * const IDENT_VOID_C="$Date: 2010-10-21 15:06:29 $";
1.1 parser 9:
10: #include "classes.h"
1.29 paf 11: #include "pa_vmethod_frame.h"
12:
1.1 parser 13: #include "pa_request.h"
14: #include "pa_vvoid.h"
15: #include "pa_sql_connection.h"
16:
1.33 paf 17: // externs
18:
19: extern String sql_bind_name;
20:
1.1 parser 21: // class
22:
1.29 paf 23: class MVoid: public Methoded {
1.1 parser 24: public:
1.29 paf 25: MVoid();
1.1 parser 26: };
27:
1.48 ! moko 28: // void is inherited from string, thus global variable declared in string.C
1.29 paf 29:
1.1 parser 30: // methods
31:
1.5 parser 32: #ifndef DOXYGEN
1.26 paf 33: class Void_sql_event_handlers: public SQL_Driver_query_event_handlers {
1.29 paf 34: const String& statement_string;
1.5 parser 35: public:
1.29 paf 36: Void_sql_event_handlers(const String& astatement_string): statement_string(astatement_string) {}
37: bool add_column(SQL_Error& /*error*/, const char* /*str*/, size_t /*length*/) { /* ignore */ return false; }
1.27 paf 38: bool before_rows(SQL_Error& error) {
1.5 parser 39: // there are some result rows, which is wrong
1.38 misha 40: error=SQL_Error(PARSER_RUNTIME,
1.29 paf 41: /*statement_string,*/
1.5 parser 42: "must return nothing");
1.27 paf 43: return true;
1.5 parser 44: }
1.27 paf 45: bool add_row(SQL_Error& /*error*/) { /* never */ return false; }
1.29 paf 46: bool add_row_cell(SQL_Error& /*error*/, const char* /*str*/, size_t /*length*/) { /* never */ return false; }
1.5 parser 47:
48: };
49: #endif
1.34 paf 50:
51: extern int marshal_binds(HashStringValue& hash, SQL_Driver::Placeholder*& placeholders);
52: extern void unmarshal_bind_updates(HashStringValue& hash, int placeholder_count, SQL_Driver::Placeholder* placeholders);
53:
1.29 paf 54: static void _sql(Request& r, MethodParams& params) {
55: Value& statement=params.as_junction(0, "statement must be code");
1.1 parser 56:
1.33 paf 57: HashStringValue* bind=0;
58: if(params.count()>1) {
59: Value& voptions=params.as_no_junction(1, "options must be hash, not code");
1.36 paf 60: if(voptions.is_defined() && !voptions.is_string())
1.33 paf 61: if(HashStringValue* options=voptions.get_hash()) {
62: int valid_options=0;
63: if(Value* vbind=options->get(sql_bind_name)) {
64: valid_options++;
65: bind=vbind->get_hash();
66: }
67: if(valid_options!=options->count())
1.46 misha 68: throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION);
1.33 paf 69: } else
1.46 misha 70: throw Exception(PARSER_RUNTIME, 0, OPTIONS_MUST_BE_HASH);
1.33 paf 71: }
72:
73: SQL_Driver::Placeholder* placeholders=0;
74: uint placeholders_count=0;
75: if(bind)
76: placeholders_count=marshal_binds(*bind, placeholders);
77:
1.29 paf 78: Temp_lang temp_lang(r, String::L_SQL);
1.18 paf 79: const String& statement_string=r.process_to_string(statement);
1.45 misha 80: const char* statement_cstr=statement_string.untaint_cstr(r.flang, r.connection());
1.43 misha 81:
1.29 paf 82: Void_sql_event_handlers handlers(statement_string);
83: r.connection()->query(
1.33 paf 84: statement_cstr,
85: placeholders_count, placeholders,
1.39 misha 86: 0, SQL_NO_LIMIT,
1.22 paf 87: handlers,
88: statement_string);
1.34 paf 89:
90: if(bind)
91: unmarshal_bind_updates(*bind, placeholders_count, placeholders);
1.1 parser 92: }
93:
94: // constructor
95:
1.48 ! moko 96: MVoid::MVoid(): Methoded("void", string_class) {
1.41 misha 97: // ^void:sql{query}
1.33 paf 98: add_native_method("sql", Method::CT_STATIC, _sql, 1, 2);
1.32 paf 99:
1.48 ! moko 100: // all other methods are inherinted from empty string
1.1 parser 101: }
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