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result.c
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result.c
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#include <tiny_tds_ext.h>
#include <stdint.h>
VALUE cTinyTdsResult;
extern VALUE mTinyTds, cTinyTdsClient, cTinyTdsError;
VALUE cBigDecimal, cDate, cDateTime;
VALUE opt_decimal_zero, opt_float_zero, opt_one, opt_zero, opt_four, opt_19hdr, opt_tenk, opt_onemil;
int opt_ruby_186;
static ID intern_new, intern_utc, intern_local, intern_localtime, intern_merge,
intern_civil, intern_new_offset, intern_plus, intern_divide, intern_Rational;
static ID sym_symbolize_keys, sym_as, sym_array, sym_cache_rows, sym_first, sym_timezone, sym_local, sym_utc, sym_empty_sets;
// Lib Macros
#ifdef HAVE_RUBY_ENCODING_H
rb_encoding *binaryEncoding;
VALUE encoded_str_new(char* _data, long _len, tinytds_result_wrapper *rwrap)
{
VALUE _val = rb_str_new((char *)_data, (long)_len);
rb_enc_associate(_val, rwrap->encoding);
return _val;
}
#define ENCODED_STR_NEW(_data, _len) encoded_str_new(_data, _len, rwrap)
VALUE encoded_str_new2(char* _data2, tinytds_result_wrapper *rwrap)
{
VALUE _val = rb_str_new2((char *)_data2);
rb_enc_associate(_val, rwrap->encoding);
return _val;
}
#define ENCODED_STR_NEW2(_data2) encoded_str_new2(_data2, rwrap)
#else
#define ENCODED_STR_NEW(_data, _len) \
rb_str_new((char *)_data, (long)_len)
#define ENCODED_STR_NEW2(_data2) \
rb_str_new2((char *)_data2)
#endif
// Lib Backend (Memory Management)
static void rb_tinytds_result_mark(void *ptr) {
tinytds_result_wrapper *rwrap = (tinytds_result_wrapper *)ptr;
if (rwrap) {
rb_gc_mark(rwrap->local_offset);
rb_gc_mark(rwrap->fields);
rb_gc_mark(rwrap->fields_processed);
rb_gc_mark(rwrap->results);
rb_gc_mark(rwrap->dbresults_retcodes);
}
}
static void rb_tinytds_result_free(void *ptr) {
tinytds_result_wrapper *rwrap = (tinytds_result_wrapper *)ptr;
xfree(ptr);
}
VALUE rb_tinytds_new_result_obj(DBPROCESS *c) {
VALUE obj;
tinytds_result_wrapper *rwrap;
obj = Data_Make_Struct(cTinyTdsResult, tinytds_result_wrapper, rb_tinytds_result_mark, rb_tinytds_result_free, rwrap);
rwrap->client = c;
rwrap->local_offset = Qnil;
rwrap->fields = rb_ary_new();
rwrap->fields_processed = rb_ary_new();
rwrap->results = Qnil;
rwrap->dbresults_retcodes = rb_ary_new();
rwrap->number_of_results = 0;
rwrap->number_of_fields = 0;
rwrap->number_of_rows = 0;
rb_obj_call_init(obj, 0, NULL);
return obj;
}
// Lib Backend (Helpers)
static RETCODE rb_tinytds_result_dbresults_retcode(VALUE self) {
VALUE ruby_rc;
RETCODE db_rc;
USE_RESULT_WRAPPER;
GET_RESULT_WRAPPER(self);
ruby_rc = rb_ary_entry(rwrap->dbresults_retcodes, rwrap->number_of_results);
if (NIL_P(ruby_rc)) {
db_rc = dbresults(rwrap->client);
ruby_rc = INT2FIX(db_rc);
rb_ary_store(rwrap->dbresults_retcodes, rwrap->number_of_results, ruby_rc);
} else {
db_rc = FIX2INT(ruby_rc);
}
return db_rc;
}
static RETCODE rb_tinytds_result_ok_helper(DBPROCESS *client) {
USE_CLIENT_USERDATA;
GET_CLIENT_USERDATA(client);
if (userdata->dbsqlok_sent == 0) {
userdata->dbsqlok_retcode = dbsqlok(client);
userdata->dbsqlok_sent = 1;
}
return userdata->dbsqlok_retcode;
}
static void rb_tinytds_result_cancel_helper(DBPROCESS *client) {
USE_CLIENT_USERDATA;
GET_CLIENT_USERDATA(client);
rb_tinytds_result_ok_helper(client);
dbcancel(client);
userdata->dbcancel_sent = 1;
userdata->dbsql_sent = 0;
}
static VALUE rb_tinytds_result_fetch_row(VALUE self, ID timezone, int symbolize_keys, int as_array) {
VALUE row;
unsigned int i = 0;
/* Wrapper And Local Vars */
USE_RESULT_WRAPPER;
GET_RESULT_WRAPPER(self);
/* Create Empty Row */
row = as_array ? rb_ary_new2(rwrap->number_of_fields) : rb_hash_new();
/* Storing Values */
for (i = 0; i < rwrap->number_of_fields; i++) {
VALUE val = Qnil;
int col = i+1;
int coltype = dbcoltype(rwrap->client, col);
BYTE *data = dbdata(rwrap->client, col);
DBINT data_len = dbdatlen(rwrap->client, col);
int null_val = ((data == NULL) && (data_len == 0));
if (!null_val) {
switch(coltype) {
case SYBINT1:
val = INT2FIX(*(DBTINYINT *)data);
break;
case SYBINT2:
val = INT2FIX(*(DBSMALLINT *)data);
break;
case SYBINT4:
val = INT2NUM(*(DBINT *)data);
break;
case SYBINT8:
val = LL2NUM(*(DBBIGINT *)data);
break;
case SYBBIT:
val = *(int *)data ? Qtrue : Qfalse;
break;
case SYBNUMERIC:
case SYBDECIMAL: {
DBTYPEINFO *data_info = dbcoltypeinfo(rwrap->client, col);
int data_slength = (int)data_info->precision + (int)data_info->scale + 1;
char* converted_decimal = (char*)_alloca(data_slength);
dbconvert(rwrap->client, coltype, data, data_len, SYBVARCHAR, (BYTE *)converted_decimal, -1);
val = rb_funcall(cBigDecimal, intern_new, 1, rb_str_new2((char *)converted_decimal));
break;
}
case SYBFLT8: {
double col_to_double = *(double *)data;
val = (col_to_double == 0.000000) ? opt_float_zero : rb_float_new(col_to_double);
break;
}
case SYBREAL: {
float col_to_float = *(float *)data;
val = (col_to_float == 0.0) ? opt_float_zero : rb_float_new(col_to_float);
break;
}
case SYBMONEY: {
DBMONEY *money = (DBMONEY *)data;
char converted_money[25];
long long money_value = ((long long)money->mnyhigh << 32) | money->mnylow;
sprintf(converted_money, "%lld", money_value);
val = rb_funcall(cBigDecimal, intern_new, 2, rb_str_new2(converted_money), opt_four);
val = rb_funcall(val, intern_divide, 1, opt_tenk);
break;
}
case SYBMONEY4: {
DBMONEY4 *money = (DBMONEY4 *)data;
char converted_money[20];
sprintf(converted_money, "%f", money->mny4 / 10000.0);
val = rb_funcall(cBigDecimal, intern_new, 1, rb_str_new2(converted_money));
break;
}
case SYBBINARY:
case SYBIMAGE:
val = rb_str_new((char *)data, (long)data_len);
#ifdef HAVE_RUBY_ENCODING_H
rb_enc_associate(val, binaryEncoding);
#endif
break;
case 36: { // SYBUNIQUE
char converted_unique[37];
dbconvert(rwrap->client, coltype, data, 37, SYBVARCHAR, (BYTE *)converted_unique, -1);
val = ENCODED_STR_NEW2(converted_unique);
break;
}
case SYBDATETIME4: {
DBDATETIME new_data;
dbconvert(rwrap->client, coltype, data, data_len, SYBDATETIME, (BYTE *)&new_data, sizeof(new_data));
data = (BYTE *)&new_data;
data_len = sizeof(new_data);
}
case SYBDATETIME: {
DBDATEREC date_rec;
int year, month, day, hour, min, sec, msec;
dbdatecrack(rwrap->client, &date_rec, (DBDATETIME *)data);
year = date_rec.dateyear,
month = date_rec.datemonth+1,
day = date_rec.datedmonth,
hour = date_rec.datehour,
min = date_rec.dateminute,
sec = date_rec.datesecond,
msec = date_rec.datemsecond;
if (year+month+day+hour+min+sec+msec != 0) {
VALUE offset = (timezone == intern_local) ? rwrap->local_offset : opt_zero;
/* Use DateTime */
if (year < 1902 || year+month+day > 2058) {
VALUE datetime_sec = INT2NUM(sec);
if (msec != 0) {
if ((opt_ruby_186 == 1 && sec < 59) || (opt_ruby_186 != 1)) {
#ifdef HAVE_RUBY_ENCODING_H
VALUE rational_msec = rb_Rational2(INT2NUM(msec*1000), opt_onemil);
#else
VALUE rational_msec = rb_funcall(rb_cObject, intern_Rational, 2, INT2NUM(msec*1000), opt_onemil);
#endif
datetime_sec = rb_funcall(datetime_sec, intern_plus, 1, rational_msec);
}
}
val = rb_funcall(cDateTime, intern_civil, 7, INT2NUM(year), INT2NUM(month), INT2NUM(day), INT2NUM(hour), INT2NUM(min), datetime_sec, offset);
val = rb_funcall(val, intern_new_offset, 1, offset);
/* Use Time */
} else {
val = rb_funcall(rb_cTime, timezone, 7, INT2NUM(year), INT2NUM(month), INT2NUM(day), INT2NUM(hour), INT2NUM(min), INT2NUM(sec), INT2NUM(msec*1000));
}
}
break;
}
case SYBCHAR:
case SYBTEXT:
val = ENCODED_STR_NEW(data, data_len);
break;
default:
val = ENCODED_STR_NEW(data, data_len);
break;
}
}
if (as_array) {
rb_ary_store(row, i, val);
} else {
VALUE key;
if (rwrap->number_of_results == 0) {
key = rb_ary_entry(rwrap->fields, i);
} else {
key = rb_ary_entry(rb_ary_entry(rwrap->fields, rwrap->number_of_results), i);
}
rb_hash_aset(row, key, val);
}
}
return row;
}
// TinyTds::Client (public)
static VALUE rb_tinytds_result_fields(VALUE self) {
RETCODE dbsqlok_rc;
RETCODE dbresults_rc;
VALUE fields_processed;
USE_RESULT_WRAPPER;
GET_RESULT_WRAPPER(self);
dbsqlok_rc = rb_tinytds_result_ok_helper(rwrap->client);
dbresults_rc = rb_tinytds_result_dbresults_retcode(self);
fields_processed = rb_ary_entry(rwrap->fields_processed, rwrap->number_of_results);
if ((dbsqlok_rc == SUCCEED) && (dbresults_rc == SUCCEED) && (fields_processed == Qnil)) {
/* Default query options. */
int symbolize_keys = 0, empty_sets = 1;
VALUE qopts = rb_iv_get(self, "@query_options");
if (rb_hash_aref(qopts, sym_symbolize_keys) == Qtrue)
symbolize_keys = 1;
if (rb_hash_aref(qopts, sym_empty_sets) == Qfalse)
empty_sets = 0;
/* Set number_of_fields count for this result set. */
rwrap->number_of_fields = dbnumcols(rwrap->client);
if (rwrap->number_of_fields > 0) {
/* Create fields for this result set. */
unsigned int fldi = 0;
VALUE fields = rb_ary_new2(rwrap->number_of_fields);
for (fldi = 0; fldi < rwrap->number_of_fields; fldi++) {
char *colname = dbcolname(rwrap->client, fldi+1);
VALUE field = symbolize_keys ? rb_str_intern(ENCODED_STR_NEW2(colname)) : rb_obj_freeze(ENCODED_STR_NEW2(colname));
rb_ary_store(fields, fldi, field);
}
/* Store the fields. */
if (rwrap->number_of_results == 0) {
rwrap->fields = fields;
} else if (rwrap->number_of_results == 1) {
VALUE multi_rs_fields = rb_ary_new();
rb_ary_store(multi_rs_fields, 0, rwrap->fields);
rb_ary_store(multi_rs_fields, 1, fields);
rwrap->fields = multi_rs_fields;
} else {
rb_ary_store(rwrap->fields, rwrap->number_of_results, fields);
}
}
rb_ary_store(rwrap->fields_processed, rwrap->number_of_results, Qtrue);
}
return rwrap->fields;
}
static VALUE rb_tinytds_result_each(int argc, VALUE * argv, VALUE self) {
VALUE qopts, opts, block;
ID timezone;
int symbolize_keys = 0, as_array = 0, cache_rows = 0, first = 0, empty_sets = 0;
USE_RESULT_WRAPPER;
USE_CLIENT_USERDATA;
GET_RESULT_WRAPPER(self);
GET_CLIENT_USERDATA(rwrap->client);
/* Local Vars */
/* Merge Options Hash To Query Options. Populate Opts & Block Var. */
qopts = rb_iv_get(self, "@query_options");
if (rb_scan_args(argc, argv, "01&", &opts, &block) == 1)
qopts = rb_funcall(qopts, intern_merge, 1, opts);
rb_iv_set(self, "@query_options", qopts);
/* Locals From Options */
if (rb_hash_aref(qopts, sym_first) == Qtrue)
first = 1;
if (rb_hash_aref(qopts, sym_symbolize_keys) == Qtrue)
symbolize_keys = 1;
if (rb_hash_aref(qopts, sym_as) == sym_array)
as_array = 1;
if (rb_hash_aref(qopts, sym_cache_rows) == Qtrue)
cache_rows = 1;
if (rb_hash_aref(qopts, sym_timezone) == sym_local) {
timezone = intern_local;
} else if (rb_hash_aref(qopts, sym_timezone) == sym_utc) {
timezone = intern_utc;
} else {
rb_warn(":timezone option must be :utc or :local - defaulting to :local");
timezone = intern_local;
}
if (rb_hash_aref(qopts, sym_empty_sets) == Qtrue)
empty_sets = 1;
/* Make The Results Or Yield Existing */
if (NIL_P(rwrap->results)) {
RETCODE dbsqlok_rc;
RETCODE dbresults_rc;
rwrap->results = rb_ary_new();
dbsqlok_rc = rb_tinytds_result_ok_helper(rwrap->client);
dbresults_rc = rb_tinytds_result_dbresults_retcode(self);
while ((dbsqlok_rc == SUCCEED) && (dbresults_rc == SUCCEED)) {
int has_rows = (DBROWS(rwrap->client) == SUCCEED) ? 1 : 0;
if (has_rows || empty_sets || (rwrap->number_of_results == 0))
rb_tinytds_result_fields(self);
if ((has_rows || empty_sets) && rwrap->number_of_fields > 0) {
/* Create rows for this result set. */
unsigned long rowi = 0;
VALUE result = rb_ary_new();
while (dbnextrow(rwrap->client) != NO_MORE_ROWS) {
VALUE row = rb_tinytds_result_fetch_row(self, timezone, symbolize_keys, as_array);
if (cache_rows)
rb_ary_store(result, rowi, row);
if (!NIL_P(block))
rb_yield(row);
if (first) {
dbcanquery(rwrap->client);
userdata->dbcancel_sent = 1;
}
rowi++;
}
rwrap->number_of_rows = rowi;
/* Store the result. */
if (cache_rows) {
if (rwrap->number_of_results == 0) {
rwrap->results = result;
} else if (rwrap->number_of_results == 1) {
VALUE multi_resultsets = rb_ary_new();
rb_ary_store(multi_resultsets, 0, rwrap->results);
rb_ary_store(multi_resultsets, 1, result);
rwrap->results = multi_resultsets;
} else {
rb_ary_store(rwrap->results, rwrap->number_of_results, result);
}
}
// If we find results increment the counter that helpers use and setup the next loop.
rwrap->number_of_results = rwrap->number_of_results + 1;
dbresults_rc = rb_tinytds_result_dbresults_retcode(self);
rb_ary_store(rwrap->fields_processed, rwrap->number_of_results, Qnil);
} else {
// If we do not find results, side step the rb_tinytds_result_dbresults_retcode helper and
// manually populate its memoized array while nullifing any memoized fields too before loop.
dbresults_rc = dbresults(rwrap->client);
rb_ary_store(rwrap->dbresults_retcodes, rwrap->number_of_results, INT2FIX(dbresults_rc));
rb_ary_store(rwrap->fields_processed, rwrap->number_of_results, Qnil);
}
}
if (dbresults_rc == FAIL)
rb_warn("TinyTDS: Something in the dbresults() while loop set the return code to FAIL.\n");
userdata->dbsql_sent = 0;
} else if (!NIL_P(block)) {
unsigned long i;
for (i = 0; i < rwrap->number_of_rows; i++) {
rb_yield(rb_ary_entry(rwrap->results, i));
}
}
return rwrap->results;
}
static VALUE rb_tinytds_result_cancel(VALUE self) {
USE_RESULT_WRAPPER;
USE_CLIENT_USERDATA;
GET_RESULT_WRAPPER(self);
GET_CLIENT_USERDATA(rwrap->client);
if (rwrap->client && !userdata->dbcancel_sent)
rb_tinytds_result_cancel_helper(rwrap->client);
return Qtrue;
}
static VALUE rb_tinytds_result_do(VALUE self) {
USE_RESULT_WRAPPER;
GET_RESULT_WRAPPER(self);
if (rwrap->client) {
rb_tinytds_result_cancel_helper(rwrap->client);
return LONG2NUM((long)dbcount(rwrap->client));
} else {
return Qnil;
}
}
static VALUE rb_tinytds_result_affected_rows(VALUE self) {
USE_RESULT_WRAPPER;
GET_RESULT_WRAPPER(self);
if (rwrap->client) {
return LONG2NUM((long)dbcount(rwrap->client));
} else {
return Qnil;
}
}
/* Duplicated in client.c */
static VALUE rb_tinytds_result_return_code(VALUE self) {
USE_RESULT_WRAPPER;
GET_RESULT_WRAPPER(self);
if (rwrap->client && dbhasretstat(rwrap->client)) {
return LONG2NUM((long)dbretstatus(rwrap->client));
} else {
return Qnil;
}
}
static VALUE rb_tinytds_result_insert(VALUE self) {
USE_RESULT_WRAPPER;
GET_RESULT_WRAPPER(self);
if (rwrap->client) {
VALUE identity = Qnil;
rb_tinytds_result_cancel_helper(rwrap->client);
dbcmd(rwrap->client, "SELECT CAST(SCOPE_IDENTITY() AS bigint) AS Ident");
if (dbsqlexec(rwrap->client) != FAIL && dbresults(rwrap->client) != FAIL && DBROWS(rwrap->client) != FAIL) {
while (dbnextrow(rwrap->client) != NO_MORE_ROWS) {
int col = 1;
BYTE *data = dbdata(rwrap->client, col);
DBINT data_len = dbdatlen(rwrap->client, col);
int null_val = ((data == NULL) && (data_len == 0));
if (!null_val)
identity = LL2NUM(*(DBBIGINT *)data);
}
}
return identity;
} else {
return Qnil;
}
}
// Lib Init
void init_tinytds_result() {
/* Data Classes */
cBigDecimal = rb_const_get(rb_cObject, rb_intern("BigDecimal"));
cDate = rb_const_get(rb_cObject, rb_intern("Date"));
cDateTime = rb_const_get(rb_cObject, rb_intern("DateTime"));
/* Define TinyTds::Result */
cTinyTdsResult = rb_define_class_under(mTinyTds, "Result", rb_cObject);
/* Define TinyTds::Result Public Methods */
rb_define_method(cTinyTdsResult, "fields", rb_tinytds_result_fields, 0);
rb_define_method(cTinyTdsResult, "each", rb_tinytds_result_each, -1);
rb_define_method(cTinyTdsResult, "cancel", rb_tinytds_result_cancel, 0);
rb_define_method(cTinyTdsResult, "do", rb_tinytds_result_do, 0);
rb_define_method(cTinyTdsResult, "affected_rows", rb_tinytds_result_affected_rows, 0);
rb_define_method(cTinyTdsResult, "return_code", rb_tinytds_result_return_code, 0);
rb_define_method(cTinyTdsResult, "insert", rb_tinytds_result_insert, 0);
/* Intern String Helpers */
intern_new = rb_intern("new");
intern_utc = rb_intern("utc");
intern_local = rb_intern("local");
intern_merge = rb_intern("merge");
intern_localtime = rb_intern("localtime");
intern_civil = rb_intern("civil");
intern_new_offset = rb_intern("new_offset");
intern_plus = rb_intern("+");
intern_divide = rb_intern("/");
intern_Rational = rb_intern("Rational");
/* Symbol Helpers */
sym_symbolize_keys = ID2SYM(rb_intern("symbolize_keys"));
sym_as = ID2SYM(rb_intern("as"));
sym_array = ID2SYM(rb_intern("array"));
sym_cache_rows = ID2SYM(rb_intern("cache_rows"));
sym_first = ID2SYM(rb_intern("first"));
sym_local = ID2SYM(intern_local);
sym_utc = ID2SYM(intern_utc);
sym_timezone = ID2SYM(rb_intern("timezone"));
sym_empty_sets = ID2SYM(rb_intern("empty_sets"));
/* Data Conversion Options */
opt_decimal_zero = rb_str_new2("0.0");
rb_global_variable(&opt_decimal_zero);
opt_float_zero = rb_float_new((double)0);
rb_global_variable(&opt_float_zero);
opt_one = INT2NUM(1);
opt_zero = INT2NUM(0);
opt_four = INT2NUM(4);
opt_19hdr = INT2NUM(1900);
opt_tenk = INT2NUM(10000);
opt_onemil = INT2NUM(1000000);
/* Ruby version flags */
opt_ruby_186 = (rb_eval_string("RUBY_VERSION == '1.8.6'") == Qtrue) ? 1 : 0;
/* Encoding */
#ifdef HAVE_RUBY_ENCODING_H
binaryEncoding = rb_enc_find("binary");
#endif
}