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| version 1.33, 2004/06/18 15:55:47 | version 1.48, 2010/10/21 15:25:07 |
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| Line 1 | Line 1 |
| /** @file | /** @file |
| Parser: @b VOID parser class. | Parser: @b VOID parser class. |
| Copyright (c) 2001-2004 ArtLebedev Group (http://www.artlebedev.com) | Copyright (c) 2001-2009 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) |
| */ | */ |
| Line 11 static const char * const IDENT_VOID_C=" | Line 11 static const char * const IDENT_VOID_C=" |
| #include "pa_vmethod_frame.h" | #include "pa_vmethod_frame.h" |
| #include "pa_request.h" | #include "pa_request.h" |
| #include "pa_vint.h" | |
| #include "pa_vdouble.h" | |
| #include "pa_vvoid.h" | #include "pa_vvoid.h" |
| #include "pa_sql_connection.h" | #include "pa_sql_connection.h" |
| Line 25 extern String sql_bind_name; | Line 23 extern String sql_bind_name; |
| class MVoid: public Methoded { | class MVoid: public Methoded { |
| public: | public: |
| MVoid(); | MVoid(); |
| public: // Methoded | |
| bool used_directly() { return true; } | |
| }; | }; |
| // global variable | // void is inherited from string, thus global variable declared in string.C |
| DECLARE_CLASS_VAR(void, new MVoid, 0); | |
| // methods | // methods |
| static void _length(Request& r, MethodParams&) { | |
| // always zero | |
| r.write_no_lang(*new VInt(0)); | |
| } | |
| static void _pos(Request& r, MethodParams& params) { | |
| // just checking for consistency | |
| params.as_no_junction(0, "substr must not be code"); | |
| // never found | |
| r.write_no_lang(*new VInt(-1)); | |
| } | |
| static void _int(Request& r, MethodParams& params) { | |
| VVoid& vvoid=GET_SELF(r, VVoid); | |
| r.write_no_lang(*new VInt( | |
| params.count()==0?vvoid.as_int():params.as_int(0, "default must be int", r))); | |
| } | |
| static void _double(Request& r, MethodParams& params) { | |
| VVoid& vvoid=GET_SELF(r, VVoid); | |
| r.write_no_lang(*new VDouble( | |
| params.count()==0?vvoid.as_double():params.as_double(0, "default must be double", r))); | |
| } | |
| #ifndef DOXYGEN | #ifndef DOXYGEN |
| static void marshal_bind( | |
| HashStringValue::key_type aname, | |
| HashStringValue::value_type avalue, | |
| SQL_Driver::Placeholder** pptr) | |
| { | |
| SQL_Driver::Placeholder& ph=**pptr; | |
| ph.name=aname.cstr(); | |
| ph.value=avalue->as_string().cstr(); | |
| ph.is_null=avalue->get_class()==void_class; | |
| ph.were_updated=false; | |
| *pptr++; | |
| } | |
| // not static, used elsewhere | |
| int marshal_binds(HashStringValue& hash, SQL_Driver::Placeholder*& placeholders) { | |
| int hash_count=hash.count(); | |
| placeholders=new(UseGC) SQL_Driver::Placeholder[hash_count]; | |
| SQL_Driver::Placeholder* ptr=placeholders; | |
| hash.for_each(marshal_bind, &ptr); | |
| return hash_count; | |
| } | |
| 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; |
| public: | public: |
| Line 90 public: | Line 37 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 100 public: | Line 47 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; | HashStringValue* bind=0; |
| if(params.count()>1) { | if(params.count()>1) { |
| Value& voptions=params.as_no_junction(1, "options must be hash, not code"); | Value& voptions=params.as_no_junction(1, "options must be hash, not code"); |
| if(!voptions.is_string()) | if(voptions.is_defined() && !voptions.is_string()) |
| if(HashStringValue* options=voptions.get_hash()) { | if(HashStringValue* options=voptions.get_hash()) { |
| int valid_options=0; | int valid_options=0; |
| if(Value* vbind=options->get(sql_bind_name)) { | if(Value* vbind=options->get(sql_bind_name)) { |
| Line 114 static void _sql(Request& r, MethodParam | Line 65 static void _sql(Request& r, MethodParam |
| bind=vbind->get_hash(); | bind=vbind->get_hash(); |
| } | } |
| if(valid_options!=options->count()) | if(valid_options!=options->count()) |
| throw Exception("parser.runtime", | throw Exception(PARSER_RUNTIME, 0, CALLED_WITH_INVALID_OPTION); |
| 0, | |
| "called with invalid option"); | |
| } else | } else |
| throw Exception("parser.runtime", | throw Exception(PARSER_RUNTIME, 0, OPTIONS_MUST_BE_HASH); |
| 0, | |
| "options must be hash"); | |
| } | } |
| SQL_Driver::Placeholder* placeholders=0; | SQL_Driver::Placeholder* placeholders=0; |
| Line 130 static void _sql(Request& r, MethodParam | Line 77 static void _sql(Request& r, MethodParam |
| 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.untaint_cstr(r.flang, 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, | statement_cstr, |
| placeholders_count, placeholders, | placeholders_count, placeholders, |
| 0, 0, | 0, SQL_NO_LIMIT, |
| handlers, | handlers, |
| statement_string); | statement_string); |
| } | |
| 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) { | if(bind) |
| ssize_t sbegin=params.as_int(0, "p must be int", r); | unmarshal_bind_updates(*bind, placeholders_count, placeholders); |
| 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 |
| MVoid::MVoid(): Methoded("void") { | MVoid::MVoid(): Methoded("void", string_class) { |
| // ^void.length[] | // ^void:sql{query} |
| add_native_method("length", Method::CT_DYNAMIC, _length, 0, 0); | |
| // ^void.pos[substr] | |
| add_native_method("pos", Method::CT_DYNAMIC, _pos, 1, 1); | |
| // ^void.int[] | |
| // ^void.int(default) | |
| add_native_method("int", Method::CT_DYNAMIC, _int, 0, 1); | |
| // ^void.double[] | |
| // ^void.double(default) | |
| add_native_method("double", Method::CT_DYNAMIC, _double, 0, 1); | |
| // ^sql[query] | |
| add_native_method("sql", Method::CT_STATIC, _sql, 1, 2); | add_native_method("sql", Method::CT_STATIC, _sql, 1, 2); |
| // ^void.left() ^void.right() | // all other methods are inherinted from empty string |
| 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); | |
| } | } |