C++ (Cpp) rasqal_new_groupby_rowsource Examples

Example #1

File: rasqal_engine_algebra.c Project: egh/rasqal

static rasqal_rowsource*
rasqal_algebra_group_algebra_node_to_rowsource(rasqal_engine_algebra_data* execution_data,
                                               rasqal_algebra_node* node,
                                               rasqal_engine_error *error_p)
{
  rasqal_query *query = execution_data->query;
  rasqal_rowsource *rs;

  rs = rasqal_algebra_node_to_rowsource(execution_data, node->node1, error_p);
  if(!rs || *error_p)
    return NULL;

  return rasqal_new_groupby_rowsource(query->world, query, rs, node->seq);
}

Example #2

File: rasqal_rowsource_groupby.c Project: rollxx/rasqal

int
main(int argc, char *argv[]) 
{
  const char *program = rasqal_basename(argv[0]);
  rasqal_rowsource *rowsource = NULL;
  rasqal_world* world = NULL;
  rasqal_query* query = NULL;
  raptor_sequence* row_seq = NULL;
  raptor_sequence* expr_seq = NULL;
  int failures = 0;
  rasqal_variables_table* vt;
  rasqal_rowsource *input_rs = NULL;
  int vars_count;
  raptor_sequence* vars_seq = NULL;
  int test_id;

  world = rasqal_new_world();
  if(!world || rasqal_world_open(world)) {
    fprintf(stderr, "%s: rasqal_world init failed\n", program);
    return(1);
  }
  
  query = rasqal_new_query(world, "sparql", NULL);

  vt = query->vars_table;
  
  for(test_id = 0; test_id < GROUP_TESTS_COUNT; test_id++) {
    int expected_rows_count = test_data[test_id].rows;
    int expected_vars_count = test_data[test_id].vars;
    const int* expected_group_ids = test_data[test_id].group_ids;
    int expected_ngroups = test_data[test_id].ngroups;
    raptor_sequence* seq = NULL;
    int count;
    int size;
    int i;
    int groups_counted;
    int last_group_id;
    
    vars_count = expected_vars_count;
    row_seq = rasqal_new_row_sequence(world, vt, test_data[test_id].data,
                                      vars_count, &vars_seq);
    if(row_seq) {
      input_rs = rasqal_new_rowsequence_rowsource(world, query, vt, 
                                                  row_seq, vars_seq);
      /* vars_seq and row_seq are now owned by input_rs */
      vars_seq = row_seq = NULL;
    }
    if(!input_rs) {
      fprintf(stderr, "%s: failed to create rowsequence rowsource\n", program);
      failures++;
      goto tidy;
    }


#ifdef HAVE_RAPTOR2_API
    expr_seq = raptor_new_sequence((raptor_data_free_handler)rasqal_free_expression,
                                   (raptor_data_print_handler)rasqal_expression_print);
#else
    expr_seq = raptor_new_sequence((raptor_sequence_free_handler*)rasqal_free_expression,
                                   (raptor_sequence_print_handler*)rasqal_expression_print);
#endif

    if(test_data[test_id].expr_vars[0] != NULL) {
      int vindex;
      const unsigned char* var_name;
      
      for(vindex = 0;
          (var_name = (const unsigned char*)test_data[test_id].expr_vars[vindex] );
          vindex++) {
        rasqal_variable* v;
        rasqal_literal *l = NULL;
        rasqal_expression* e = NULL;

        v = rasqal_variables_table_get_by_name(vt, var_name);
        if(v)
          l = rasqal_new_variable_literal(world, v);

        if(l)
          e = rasqal_new_literal_expression(world, l);

        if(e)
          raptor_sequence_push(expr_seq, e);
        else {
          fprintf(stderr, "%s: failed to create variable %s\n", program,
                  (const char*)var_name);
          failures++;
          goto tidy;
        }
        
      }
    }
    
    rowsource = rasqal_new_groupby_rowsource(world, query, input_rs, expr_seq);
    /* input_rs is now owned by rowsource */
    input_rs = NULL;
   
    if(!rowsource) {
      fprintf(stderr, "%s: failed to create groupby rowsource\n", program);
      failures++;
      goto tidy;
    }

    seq = rasqal_rowsource_read_all_rows(rowsource);
    if(!seq) {
      fprintf(stderr,
              "%s: test %d rasqal_rowsource_read_all_rows() returned a NULL seq for a groupby rowsource\n",
              program, test_id);
      failures++;
      goto tidy;
    }
    count = raptor_sequence_size(seq);
    if(count != expected_rows_count) {
      fprintf(stderr,
              "%s: test %d rasqal_rowsource_read_all_rows() returned %d rows for a groupby rowsource, expected %d\n",
              program, test_id, count, expected_rows_count);
      failures++;
      goto tidy;
    }

    size = rasqal_rowsource_get_size(rowsource);
    if(size != expected_vars_count) {
      fprintf(stderr,
              "%s: test %d rasqal_rowsource_get_size() returned %d columns (variables) for a groupby rowsource, expected %d\n",
              program, test_id, size, expected_vars_count);
      failures++;
      goto tidy;
    }

    groups_counted = 0;
    last_group_id = -1;
    for(i = 0; i < count; i++) {
      rasqal_row* row = raptor_sequence_get_at(seq, i);

      if(row->group_id != last_group_id) {
        groups_counted++;
        last_group_id = row->group_id;
      }

      if(row->group_id != expected_group_ids[i]) {
        fprintf(stderr, "%s: test %d row #%d has group_id %d, expected %d\n",
                program, test_id, i, row->group_id, expected_group_ids[i]);
        failures++;
        goto tidy;
      }
      
    }
    
    if(groups_counted != expected_ngroups) {
        fprintf(stderr, "%s: test %d returnd %d groups, expected %d\n",
                program, test_id, groups_counted, expected_ngroups);
        failures++;
        goto tidy;
      }

#ifdef RASQAL_DEBUG
    rasqal_rowsource_print_row_sequence(rowsource, seq, stderr);
#endif

    raptor_free_sequence(seq); seq = NULL;

    rasqal_free_rowsource(rowsource); rowsource = NULL;

    if(expr_seq)
      raptor_free_sequence(expr_seq);
    expr_seq = NULL;
  }
  
  tidy:
  if(expr_seq)
    raptor_free_sequence(expr_seq);
  if(rowsource)
    rasqal_free_rowsource(rowsource);
  if(input_rs)
    rasqal_free_rowsource(input_rs);
  if(query)
    rasqal_free_query(query);
  if(world)
    rasqal_free_world(world);

  return failures;
}