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| version 1.28.2.5.2.9, 2003/04/03 10:48:25 | version 1.41, 2008/09/04 13:15:36 |
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| Line 1 | Line 1 |
| /** @file | /** @file |
| Parser: @b VOID parser class. | Parser: @b VOID parser class. |
| Copyright (c) 2001-2003 ArtLebedev Group (http://www.artlebedev.com) | Copyright (c) 2001-2005 ArtLebedev Group (http://www.artlebedev.com) |
| Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) | Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) |
| */ | */ |
| static const char* IDENT_VOID_C="$Date$"; | static const char * const IDENT_VOID_C="$Date$"; |
| #include "classes.h" | #include "classes.h" |
| #include "pa_vmethod_frame.h" | #include "pa_vmethod_frame.h" |
| Line 14 static const char* IDENT_VOID_C="$Date$" | Line 14 static const char* IDENT_VOID_C="$Date$" |
| #include "pa_vint.h" | #include "pa_vint.h" |
| #include "pa_vdouble.h" | #include "pa_vdouble.h" |
| #include "pa_vvoid.h" | #include "pa_vvoid.h" |
| #include "pa_vbool.h" | |
| #include "pa_sql_connection.h" | #include "pa_sql_connection.h" |
| // externs | |
| extern String sql_bind_name; | |
| // class | // class |
| class MVoid: public Methoded { | class MVoid: public Methoded { |
| Line 39 static void _length(Request& r, MethodPa | Line 44 static void _length(Request& r, MethodPa |
| static void _pos(Request& r, MethodParams& params) { | static void _pos(Request& r, MethodParams& params) { |
| // just checking for consistency | // just checking for consistency |
| params.as_no_junction(0, "substr must not be code"); | params.as_no_junction(0, "substr must not be code"); |
| if(params.count()>1){ | |
| ssize_t offset=params.as_int(1, "n must be int", r); | |
| if(offset<0) | |
| throw Exception(PARSER_RUNTIME, | |
| 0, | |
| "n(%d) must be >=0", offset); | |
| } | |
| // never found | // never found |
| r.write_no_lang(*new VInt(-1)); | r.write_no_lang(*new VInt(-1)); |
| } | } |
| Line 55 static void _double(Request& r, MethodPa | Line 67 static void _double(Request& r, MethodPa |
| params.count()==0?vvoid.as_double():params.as_double(0, "default must be double", r))); | params.count()==0?vvoid.as_double():params.as_double(0, "default must be double", r))); |
| } | } |
| static void _bool(Request& r, MethodParams& params) { | |
| VVoid& vvoid=GET_SELF(r, VVoid); | |
| r.write_no_lang(*new VBool( | |
| params.count()==0?vvoid.as_bool():params.as_bool(0, "default must be bool", r))); | |
| } | |
| #ifndef DOXYGEN | #ifndef DOXYGEN |
| class Void_sql_event_handlers: public SQL_Driver_query_event_handlers { | class Void_sql_event_handlers: public SQL_Driver_query_event_handlers { |
| const String& statement_string; | const String& statement_string; |
| Line 63 public: | Line 81 public: |
| bool add_column(SQL_Error& /*error*/, const char* /*str*/, size_t /*length*/) { /* ignore */ return false; } | bool add_column(SQL_Error& /*error*/, const char* /*str*/, size_t /*length*/) { /* ignore */ return false; } |
| bool before_rows(SQL_Error& error) { | bool before_rows(SQL_Error& error) { |
| // there are some result rows, which is wrong | // there are some result rows, which is wrong |
| error=SQL_Error("parser.runtime", | error=SQL_Error(PARSER_RUNTIME, |
| /*statement_string,*/ | /*statement_string,*/ |
| "must return nothing"); | "must return nothing"); |
| return true; | return true; |
| Line 73 public: | Line 91 public: |
| }; | }; |
| #endif | #endif |
| extern int marshal_binds(HashStringValue& hash, SQL_Driver::Placeholder*& placeholders); | |
| extern void unmarshal_bind_updates(HashStringValue& hash, int placeholder_count, SQL_Driver::Placeholder* placeholders); | |
| static void _sql(Request& r, MethodParams& params) { | static void _sql(Request& r, MethodParams& params) { |
| Value& statement=params.as_junction(0, "statement must be code"); | Value& statement=params.as_junction(0, "statement must be code"); |
| HashStringValue* bind=0; | |
| if(params.count()>1) { | |
| Value& voptions=params.as_no_junction(1, "options must be hash, not code"); | |
| if(voptions.is_defined() && !voptions.is_string()) | |
| if(HashStringValue* options=voptions.get_hash()) { | |
| int valid_options=0; | |
| if(Value* vbind=options->get(sql_bind_name)) { | |
| valid_options++; | |
| bind=vbind->get_hash(); | |
| } | |
| if(valid_options!=options->count()) | |
| throw Exception(PARSER_RUNTIME, | |
| 0, | |
| "called with invalid option"); | |
| } else | |
| throw Exception(PARSER_RUNTIME, | |
| 0, | |
| "options must be hash"); | |
| } | |
| SQL_Driver::Placeholder* placeholders=0; | |
| uint placeholders_count=0; | |
| if(bind) | |
| placeholders_count=marshal_binds(*bind, placeholders); | |
| Temp_lang temp_lang(r, String::L_SQL); | Temp_lang temp_lang(r, String::L_SQL); |
| const String& statement_string=r.process_to_string(statement); | const String& statement_string=r.process_to_string(statement); |
| const char* statement_cstr= | const char* statement_cstr= |
| statement_string.cstr(String::L_UNSPECIFIED, r.connection()); | statement_string.cstr(String::L_UNSPECIFIED, r.connection()); |
| Void_sql_event_handlers handlers(statement_string); | Void_sql_event_handlers handlers(statement_string); |
| r.connection()->query( | r.connection()->query( |
| statement_cstr, 0, 0, | statement_cstr, |
| placeholders_count, placeholders, | |
| 0, SQL_NO_LIMIT, | |
| handlers, | handlers, |
| statement_string); | statement_string); |
| if(bind) | |
| unmarshal_bind_updates(*bind, placeholders_count, placeholders); | |
| } | |
| static void _left_right(Request& r, MethodParams& params) { | |
| ssize_t sn=params.as_int(0, "n must be int", r); | |
| if(sn<0) | |
| throw Exception(PARSER_RUNTIME, | |
| 0, | |
| "n(%d) must be >=0", sn); | |
| // return nothing | |
| } | |
| static void _mid(Request& r, MethodParams& params) { | |
| ssize_t sbegin=params.as_int(0, "p must be int", r); | |
| if(sbegin<0) | |
| throw Exception(PARSER_RUNTIME, | |
| 0, | |
| "p(%d) must be >=0", sbegin); | |
| if(params.count()>1) { | |
| ssize_t sn=params.as_int(1, "n must be int", r); | |
| if(sn<0) | |
| throw Exception(PARSER_RUNTIME, | |
| 0, | |
| "n(%d) must be >=0", sn); | |
| } | |
| // return nothing | |
| } | } |
| // constructor | // constructor |
| Line 94 MVoid::MVoid(): Methoded("void") { | Line 174 MVoid::MVoid(): Methoded("void") { |
| add_native_method("length", Method::CT_DYNAMIC, _length, 0, 0); | add_native_method("length", Method::CT_DYNAMIC, _length, 0, 0); |
| // ^void.pos[substr] | // ^void.pos[substr] |
| add_native_method("pos", Method::CT_DYNAMIC, _pos, 1, 1); | // ^void.pos[substr](n) |
| add_native_method("pos", Method::CT_DYNAMIC, _pos, 1, 2); | |
| // ^void.int[] | // ^void.int[] |
| // ^void.int(default) | // ^void.int(default) |
| add_native_method("int", Method::CT_DYNAMIC, _int, 0, 1); | add_native_method("int", Method::CT_DYNAMIC, _int, 0, 1); |
| // ^void.double[] | // ^void.double[] |
| // ^void.double(default) | // ^void.double(default) |
| add_native_method("double", Method::CT_DYNAMIC, _double, 0, 1); | add_native_method("double", Method::CT_DYNAMIC, _double, 0, 1); |
| // ^sql[query] | // ^void.bool[] |
| add_native_method("sql", Method::CT_STATIC, _sql, 1, 1); | // ^void.bool(default) |
| add_native_method("bool", Method::CT_DYNAMIC, _bool, 0, 1); | |
| // ^void:sql{query} | |
| add_native_method("sql", Method::CT_STATIC, _sql, 1, 2); | |
| // ^void.left() ^void.right() | |
| add_native_method("left", Method::CT_DYNAMIC, _left_right, 1, 1); | |
| add_native_method("right", Method::CT_DYNAMIC, _left_right, 1, 1); | |
| // ^void.mid(p;n) | |
| add_native_method("mid", Method::CT_DYNAMIC, _mid, 1, 2); | |
| } | } |