Class: TinyTds::Result

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/tiny_tds/result.rb,
ext/tiny_tds/result.c

Instance Method Summary collapse

Instance Method Details

#affected_rows ⇒ Object 



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# File 'ext/tiny_tds/result.c', line 645

static VALUE rb_tinytds_result_affected_rows(VALUE self)
{
  GET_RESULT_WRAPPER(self);

  if (rwrap->client) {
    return LONG2NUM((long)dbcount(rwrap->client));
  } else {
    return Qnil;
  }
}

#cancel ⇒ Object 



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# File 'ext/tiny_tds/result.c', line 617

static VALUE rb_tinytds_result_cancel(VALUE self)
{
  tinytds_client_userdata *userdata;
  GET_RESULT_WRAPPER(self);
  userdata = (tinytds_client_userdata *)dbgetuserdata(rwrap->client);

  if (rwrap->client && !userdata->dbcancel_sent) {
    rb_tinytds_result_ok_helper(rwrap->client);
    dbcancel(rwrap->client);
    userdata->dbcancel_sent = 1;
    userdata->dbsql_sent = 0;
  }

  return Qtrue;
}

#do ⇒ Object 



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# File 'ext/tiny_tds/result.c', line 633

static VALUE rb_tinytds_result_do(VALUE self)
{
  GET_RESULT_WRAPPER(self);

  if (rwrap->client) {
    rb_tinytds_result_exec_helper(rwrap->client);
    return LONG2NUM((long)dbcount(rwrap->client));
  } else {
    return Qnil;
  }
}

#each(*args) ⇒ Object 



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# File 'ext/tiny_tds/result.c', line 486

static VALUE rb_tinytds_result_each(int argc, VALUE * argv, VALUE self)
{
  /* Local Vars */
  VALUE qopts, opts, block;
  ID timezone;
  int symbolize_keys = 0, as_array = 0, cache_rows = 0, first = 0, empty_sets = 0;
  tinytds_client_userdata *userdata;
  GET_RESULT_WRAPPER(self);
  userdata = (tinytds_client_userdata *)dbgetuserdata(rwrap->client);
  /* 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, 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 (nogvl_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 = nogvl_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;
}

#fields ⇒ Object

TinyTds::Client (public)



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# File 'ext/tiny_tds/result.c', line 435

static VALUE rb_tinytds_result_fields(VALUE self)
{
  RETCODE dbsqlok_rc, dbresults_rc;
  VALUE fields_processed;
  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;
    VALUE qopts = rb_iv_get(self, "@query_options");

    if (rb_hash_aref(qopts, sym_symbolize_keys) == Qtrue) {
      symbolize_keys = 1;
    }

    /* 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;
}

#insert ⇒ Object 



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# File 'ext/tiny_tds/result.c', line 668

static VALUE rb_tinytds_result_insert(VALUE self)
{
  GET_RESULT_WRAPPER(self);

  if (rwrap->client) {
    VALUE identity = Qnil;
    rb_tinytds_result_exec_helper(rwrap->client);
    dbcmd(rwrap->client, rwrap->cwrap->identity_insert_sql);

    if (nogvl_dbsqlexec(rwrap->client) != FAIL
        && nogvl_dbresults(rwrap->client) != FAIL
        && DBROWS(rwrap->client) != FAIL) {
      while (nogvl_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;
  }
}

#return_code ⇒ Object

Duplicated in client.c



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# File 'ext/tiny_tds/result.c', line 657

static VALUE rb_tinytds_result_return_code(VALUE self)
{
  GET_RESULT_WRAPPER(self);

  if (rwrap->client && dbhasretstat(rwrap->client)) {
    return LONG2NUM((long)dbretstatus(rwrap->client));
  } else {
    return Qnil;
  }
}