static raptor_sequence*
rasqal_sort_rowsource_read_all_rows(rasqal_rowsource* rowsource,
void *user_data)
{
rasqal_sort_rowsource_context *con;
raptor_sequence *seq = NULL;
con = (rasqal_sort_rowsource_context*)user_data;
/* if there were no ordering conditions, pass it all on to inner rowsource */
if(con->order_size <= 0)
return rasqal_rowsource_read_all_rows(con->rowsource);
/* need to sort */
if(rasqal_sort_rowsource_process(rowsource, con))
return NULL;
if(con->seq) {
/* pass ownership of seq back to caller */
seq = con->seq;
con->seq = NULL;
}
return seq;
}
static raptor_sequence*
rasqal_service_rowsource_read_all_rows(rasqal_rowsource* rowsource,
void *user_data)
{
rasqal_service_rowsource_context* con;
con = (rasqal_service_rowsource_context*)user_data;
return rasqal_rowsource_read_all_rows(con->rowsource);
}
/**
* rasqal_rowsource_read_row:
* @rowsource: rasqal rowsource
*
* Read a query result row from the rowsource.
*
* If a row is returned, it is owned by the caller.
*
* Return value: row or NULL when no more rows are available
**/
rasqal_row*
rasqal_rowsource_read_row(rasqal_rowsource *rowsource)
{
rasqal_row* row = NULL;
if(rowsource->finished)
return NULL;
if(rasqal_rowsource_ensure_variables(rowsource))
return NULL;
if(rowsource->handler->read_row)
row = rowsource->handler->read_row(rowsource, rowsource->user_data);
else {
if(!rowsource->rows_sequence) {
rowsource->rows_sequence = rasqal_rowsource_read_all_rows(rowsource);
rowsource->offset = 0;
}
if(rowsource->rows_sequence)
/* remove and return row from sequence at offset */
row = (rasqal_row*)raptor_sequence_delete_at(rowsource->rows_sequence,
rowsource->offset++);
}
if(!row)
rowsource->finished = 1;
else {
rowsource->count++;
/* Generate a group around all rows if there are no groups returned */
if(rowsource->generate_group && row->group_id < 0)
row->group_id = 0;
}
#ifdef RASQAL_DEBUG
RASQAL_DEBUG3("%s rowsource %p read row: ", rowsource->handler->name,
rowsource);
if(row)
rasqal_row_print(row, stderr);
else
fputs("NONE", stderr);
fputs("\n", stderr);
#endif
return row;
}
static raptor_sequence*
rasqal_query_engine_algebra_get_all_rows(void* ex_data,
rasqal_engine_error *error_p)
{
rasqal_engine_algebra_data* execution_data;
raptor_sequence *seq = NULL;
execution_data = (rasqal_engine_algebra_data*)ex_data;
if(execution_data->rowsource) {
seq = rasqal_rowsource_read_all_rows(execution_data->rowsource);
if(!seq)
*error_p = RASQAL_ENGINE_FAILED;
} else
*error_p = RASQAL_ENGINE_FAILED;
return seq;
}
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_args_seq = NULL;
int failures = 0;
rasqal_variables_table* vt;
rasqal_rowsource *input_rs = NULL;
raptor_sequence* vars_seq = NULL;
raptor_sequence* exprs_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 < AGGREGATION_TESTS_COUNT; test_id++) {
int input_vars_count = test_data[test_id].input_vars;
int output_rows_count = test_data[test_id].output_rows;
int output_vars_count = test_data[test_id].output_vars;
const int* input_group_ids = test_data[test_id].group_ids;
const int* result_int_data = test_data[test_id].result_data;
const char* const* result_string_data = test_data[test_id].result_string_data;
rasqal_op op = test_data[test_id].op;
raptor_sequence* seq = NULL;
int count;
int size;
int i;
char* output_var_name;
rasqal_variable* output_var;
rasqal_expression* expr;
int output_row_size = (input_vars_count + output_vars_count);
if(output_vars_count != 1) {
fprintf(stderr,
"%s: test %d expects %d variables which is not supported. Test skipped\n",
program, test_id, output_vars_count);
failures++;
goto tidy;
}
row_seq = rasqal_new_row_sequence(world, vt, test_data[test_id].data,
test_data[test_id].input_vars, &vars_seq);
if(row_seq) {
for(i = 0; i < test_data[test_id].input_rows; i++) {
rasqal_row* row = (rasqal_row*)raptor_sequence_get_at(row_seq, i);
row->group_id = input_group_ids[i];
}
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;
}
expr_args_seq = raptor_new_sequence((raptor_data_free_handler)rasqal_free_expression,
(raptor_data_print_handler)rasqal_expression_print);
if(test_data[test_id].expr_agg_vars[0] != NULL) {
int vindex;
const unsigned char* var_name;
for(vindex = 0;
(var_name = (const unsigned char*)test_data[test_id].expr_agg_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_args_seq, e);
else {
fprintf(stderr, "%s: failed to create variable %s\n", program,
(const char*)var_name);
failures++;
goto tidy;
}
}
} /* if vars */
output_var_name = (char*)RASQAL_MALLOC(cstring, 5);
memcpy(output_var_name, "fake", 5);
output_var = rasqal_variables_table_add(vt, RASQAL_VARIABLE_TYPE_ANONYMOUS,
(const unsigned char*)output_var_name, NULL);
expr = make_test_expr(world, expr_args_seq, op);
/* expr_args_seq is now owned by expr */
expr_args_seq = NULL;
exprs_seq = raptor_new_sequence((raptor_data_free_handler)rasqal_free_expression,
(raptor_data_print_handler)rasqal_expression_print);
raptor_sequence_push(exprs_seq, expr);
/* expr is now owned by exprs_seq */
expr = NULL;
vars_seq = raptor_new_sequence((raptor_data_free_handler)rasqal_free_variable,
(raptor_data_print_handler)rasqal_variable_print);
output_var = rasqal_new_variable_from_variable(output_var);
raptor_sequence_push(vars_seq, output_var);
rowsource = rasqal_new_aggregation_rowsource(world, query, input_rs,
exprs_seq, vars_seq);
/* exprs_seq, vars_seq and input_rs are now owned by rowsource */
exprs_seq = NULL; vars_seq = NULL; input_rs = NULL;
if(!rowsource) {
fprintf(stderr, "%s: failed to create aggregation rowsource\n", program);
failures++;
goto tidy;
}
/* Test the rowsource */
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 aggregation rowsource\n",
program, test_id);
failures++;
goto tidy;
}
count = raptor_sequence_size(seq);
if(count != output_rows_count) {
fprintf(stderr,
"%s: test %d rasqal_rowsource_read_all_rows() returned %d rows for a aggregation rowsource, expected %d\n",
program, test_id, count, output_rows_count);
failures++;
goto tidy;
}
size = rasqal_rowsource_get_size(rowsource);
if(size != output_row_size) {
fprintf(stderr,
"%s: test %d rasqal_rowsource_get_size() returned %d columns (variables) for a aggregation rowsource, expected %d\n",
program, test_id, size, output_row_size);
failures++;
goto tidy;
}
if(result_int_data) {
for(i = 0; i < output_rows_count; i++) {
rasqal_row* row = (rasqal_row*)raptor_sequence_get_at(seq, i);
rasqal_literal* value;
int integer;
int expected_integer = result_int_data[i];
int vc;
if(row->size != output_row_size) {
fprintf(stderr,
"%s: test %d row #%d is size %d expected %d\n",
program, test_id, i, row->size, output_row_size);
failures++;
goto tidy;
}
/* Expected variable ordering in output row is:
* {input vars} {output_vars}
*/
for(vc = 0; vc < output_vars_count; vc++) {
rasqal_variable* row_var;
int offset = input_vars_count + vc;
row_var = rasqal_rowsource_get_variable_by_offset(rowsource, offset);
value = row->values[offset];
if(!value) {
fprintf(stderr,
"%s: test %d row #%d %s value #%d result is NULL\n",
program, test_id, i, row_var->name, vc);
failures++;
goto tidy;
}
if(value->type != RASQAL_LITERAL_INTEGER) {
fprintf(stderr,
"%s: test %d row #%d %s value #%d result is type %s expected integer\n",
program, test_id, i, row_var->name, vc,
rasqal_literal_type_label(value->type));
failures++;
goto tidy;
}
integer = rasqal_literal_as_integer(value, NULL);
if(integer != expected_integer) {
fprintf(stderr,
"%s: test %d row #%d %s value #%d result is %d expected %d\n",
program, test_id, i, row_var->name, vc,
integer, expected_integer);
failures++;
goto tidy;
}
}
}
}
if(result_string_data) {
for(i = 0; i < output_rows_count; i++) {
rasqal_row* row = (rasqal_row*)raptor_sequence_get_at(seq, i);
rasqal_literal* value;
const unsigned char* str;
const char* expected_string = result_string_data[i];
int vc;
if(row->size != output_row_size) {
fprintf(stderr,
"%s: test %d row #%d is size %d expected %d\n",
program, test_id, i, row->size, output_row_size);
failures++;
goto tidy;
}
/* Expected variable ordering in output row is:
* {input vars} {output_vars}
*/
for(vc = 0; vc < output_vars_count; vc++) {
rasqal_variable* row_var;
int offset = input_vars_count + vc;
row_var = rasqal_rowsource_get_variable_by_offset(rowsource, offset);
value = row->values[offset];
if(!value) {
fprintf(stderr,
"%s: test %d row #%d %s value #%d result is NULL\n",
program, test_id, i, row_var->name, vc);
failures++;
goto tidy;
}
if(value->type != RASQAL_LITERAL_STRING) {
fprintf(stderr,
"%s: test %d row #%d %s value #%d is type %s expected integer\n",
program, test_id, i, row_var->name, vc,
rasqal_literal_type_label(value->type));
failures++;
goto tidy;
}
str = rasqal_literal_as_string(value);
if(strcmp((const char*)str, expected_string)) {
fprintf(stderr,
"%s: test %d row #%d %s value #%d is %s expected %s\n",
program, test_id, i, row_var->name, vc,
str, expected_string);
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_args_seq)
raptor_free_sequence(expr_args_seq);
expr_args_seq = NULL;
}
tidy:
if(exprs_seq)
raptor_free_sequence(exprs_seq);
if(vars_seq)
raptor_free_sequence(vars_seq);
if(expr_args_seq)
raptor_free_sequence(expr_args_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;
}
int
main(int argc, char *argv[])
{
const char *program = rasqal_basename(argv[0]);
rasqal_rowsource *rowsource = NULL;
rasqal_rowsource *left_rs = NULL;
rasqal_rowsource *right_rs = NULL;
rasqal_world* world = NULL;
rasqal_query* query = NULL;
int count;
raptor_sequence* seq = NULL;
int failures = 0;
rasqal_variables_table* vt;
int size;
int expected_size = EXPECTED_COLUMNS_COUNT;
int i;
raptor_sequence* vars_seq = NULL;
int test_count;
world = rasqal_new_world(); rasqal_world_open(world);
query = rasqal_new_query(world, "sparql", NULL);
vt = query->vars_table;
for(test_count = 0; test_count < JOIN_TESTS_COUNT; test_count++) {
rasqal_join_type join_type = join_test_config[test_count].join_type;
int expected_count = join_test_config[test_count].expected;
int vars_count;
fprintf(stderr, "%s: test #%d join type %d\n", program, test_count,
RASQAL_GOOD_CAST(int, join_type));
/* 2 variables and 3 rows */
vars_count = 2;
seq = rasqal_new_row_sequence(world, vt, join_1_data_2x3_rows, vars_count,
&vars_seq);
if(!seq) {
fprintf(stderr,
"%s: failed to create left sequence of %d vars\n", program,
vars_count);
failures++;
goto tidy;
}
left_rs = rasqal_new_rowsequence_rowsource(world, query, vt, seq, vars_seq);
if(!left_rs) {
fprintf(stderr, "%s: failed to create left rowsource\n", program);
failures++;
goto tidy;
}
/* vars_seq and seq are now owned by left_rs */
vars_seq = seq = NULL;
/* 3 variables and 2 rows */
vars_count = 3;
seq = rasqal_new_row_sequence(world, vt, join_2_data_3x2_rows, vars_count,
&vars_seq);
if(!seq) {
fprintf(stderr,
"%s: failed to create right sequence of %d rows\n", program,
vars_count);
failures++;
goto tidy;
}
right_rs = rasqal_new_rowsequence_rowsource(world, query, vt, seq, vars_seq);
if(!right_rs) {
fprintf(stderr, "%s: failed to create right rowsource\n", program);
failures++;
goto tidy;
}
/* vars_seq and seq are now owned by right_rs */
vars_seq = seq = NULL;
rowsource = rasqal_new_join_rowsource(world, query, left_rs, right_rs,
join_type, NULL);
if(!rowsource) {
fprintf(stderr, "%s: failed to create join rowsource\n", program);
failures++;
goto tidy;
}
/* left_rs and right_rs are now owned by rowsource */
left_rs = right_rs = NULL;
seq = rasqal_rowsource_read_all_rows(rowsource);
if(!seq) {
fprintf(stderr,
"%s: read_rows returned a NULL seq for a join rowsource\n",
program);
failures++;
goto tidy;
}
count = raptor_sequence_size(seq);
if(count != expected_count) {
fprintf(stderr,
"%s: read_rows returned %d rows for a join rowsource, expected %d\n",
program, count, expected_count);
failures++;
goto tidy;
}
size = rasqal_rowsource_get_size(rowsource);
if(size != expected_size) {
fprintf(stderr,
"%s: read_rows returned %d columns (variables) for a join rowsource, expected %d\n",
program, size, expected_size);
failures++;
goto tidy;
}
for(i = 0; i < expected_size; i++) {
rasqal_variable* v;
const char* name = NULL;
const char *expected_name = join_result_vars[i];
v = rasqal_rowsource_get_variable_by_offset(rowsource, i);
if(!v) {
fprintf(stderr,
"%s: read_rows had NULL column (variable) #%d expected %s\n",
program, i, expected_name);
failures++;
goto tidy;
}
name = RASQAL_GOOD_CAST(const char*, v->name);
if(strcmp(name, expected_name)) {
fprintf(stderr,
"%s: read_rows returned column (variable) #%d %s but expected %s\n",
program, i, name, expected_name);
failures++;
goto tidy;
}
}
#ifdef RASQAL_DEBUG
rasqal_rowsource_print_row_sequence(rowsource, seq, DEBUG_FH);
#endif
raptor_free_sequence(seq); seq = NULL;
rasqal_free_rowsource(rowsource); rowsource = NULL;
/* end test_count loop */
}
tidy:
if(seq)
raptor_free_sequence(seq);
if(left_rs)
rasqal_free_rowsource(left_rs);
if(right_rs)
rasqal_free_rowsource(right_rs);
if(rowsource)
rasqal_free_rowsource(rowsource);
if(query)
rasqal_free_query(query);
if(world)
rasqal_free_world(world);
return failures;
}
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;
rasqal_row* row = NULL;
int count;
raptor_sequence* seq = NULL;
int failures = 0;
raptor_uri* service_uri;
const unsigned char* query_string;
raptor_sequence* data_graphs = NULL;
unsigned int rs_flags = 0;
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);
service_uri = raptor_new_uri(world->raptor_world_ptr,
(const unsigned char *)"http://example.org/service");
query_string = (const unsigned char*)"SELECT * WHERE { ?s ?p ?o }";
rowsource = rasqal_new_service_rowsource(world, query, service_uri,
query_string, data_graphs,
rs_flags);
if(!rowsource) {
fprintf(stderr, "%s: failed to create service rowsource\n", program);
failures++;
goto tidy;
}
row = rasqal_rowsource_read_row(rowsource);
if(!row) {
fprintf(stderr,
"%s: read_row failed to return a row for an service rowsource\n",
program);
failures++;
goto tidy;
}
if(row->size) {
fprintf(stderr,
"%s: read_row returned an non-service row size %d for a service stream\n",
program, row->size);
failures++;
goto tidy;
}
count = rasqal_rowsource_get_rows_count(rowsource);
if(count != 1) {
fprintf(stderr, "%s: read_rows returned count %d for a service stream\n",
program, count);
failures++;
goto tidy;
}
rasqal_free_rowsource(rowsource);
/* re-init rowsource */
rowsource = rasqal_new_service_rowsource(world, query, service_uri,
query_string, data_graphs,
rs_flags);
seq = rasqal_rowsource_read_all_rows(rowsource);
if(!seq) {
fprintf(stderr, "%s: read_rows returned a NULL seq for a service stream\n",
program);
failures++;
goto tidy;
}
count = raptor_sequence_size(seq);
if(count != 1) {
fprintf(stderr, "%s: read_rows returned size %d seq for a service stream\n",
program, count);
failures++;
goto tidy;
}
tidy:
if(seq)
raptor_free_sequence(seq);
if(rowsource)
rasqal_free_rowsource(rowsource);
if(query)
rasqal_free_query(query);
if(world)
rasqal_free_world(world);
return failures;
}
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;
}
/**
* rasqal_rowsource_read_row:
* @rowsource: rasqal rowsource
*
* Read a query result row from the rowsource.
*
* If a row is returned, it is owned by the caller.
*
* Return value: row or NULL when no more rows are available
**/
rasqal_row*
rasqal_rowsource_read_row(rasqal_rowsource *rowsource)
{
rasqal_row* row = NULL;
if(!rowsource || rowsource->finished)
return NULL;
if(rowsource->flags & RASQAL_ROWSOURCE_FLAGS_SAVED_ROWS) {
/* return row from saved rows sequence at offset */
row = (rasqal_row*)raptor_sequence_get_at(rowsource->rows_sequence,
rowsource->offset++);
#ifdef RASQAL_DEBUG
RASQAL_DEBUG3("%s rowsource %p returned saved row: ",
rowsource->handler->name, rowsource);
if(row)
rasqal_row_print(row, stderr);
else
fputs("NONE", stderr);
fputs("\n", stderr);
#endif
if(row)
row = rasqal_new_row_from_row(row);
/* row is owned by us */
} else {
if(rasqal_rowsource_ensure_variables(rowsource))
return NULL;
if(rowsource->handler->read_row) {
row = rowsource->handler->read_row(rowsource, rowsource->user_data);
/* row is owned by us */
if(row && rowsource->flags & RASQAL_ROWSOURCE_FLAGS_SAVE_ROWS) {
if(!rowsource->rows_sequence) {
rowsource->rows_sequence = raptor_new_sequence((raptor_data_free_handler)rasqal_free_row,
(raptor_data_print_handler)rasqal_row_print);
rowsource->offset = 0;
}
/* copy to save it away */
row = rasqal_new_row_from_row(row);
raptor_sequence_push(rowsource->rows_sequence, row);
}
} else {
if(!rowsource->rows_sequence) {
raptor_sequence* seq;
seq = rasqal_rowsource_read_all_rows(rowsource);
if(rowsource->rows_sequence)
raptor_free_sequence(rowsource->rows_sequence);
/* rows_sequence now owns all rows */
rowsource->rows_sequence = seq;
rowsource->offset = 0;
}
if(rowsource->rows_sequence) {
/* return row from sequence at offset */
row = (rasqal_row*)raptor_sequence_get_at(rowsource->rows_sequence,
rowsource->offset++);
if(row)
row = rasqal_new_row_from_row(row);
/* row is owned by us */
}
}
}
if(!row) {
rowsource->finished = 1;
if(rowsource->flags & RASQAL_ROWSOURCE_FLAGS_SAVE_ROWS)
rowsource->flags |= RASQAL_ROWSOURCE_FLAGS_SAVED_ROWS;
} else {
rowsource->count++;
/* Generate a group around all rows if there are no groups returned */
if(rowsource->generate_group && row->group_id < 0)
row->group_id = 0;
}
#ifdef RASQAL_DEBUG
RASQAL_DEBUG3("%s rowsource %p returned row: ", rowsource->handler->name,
rowsource);
if(row)
rasqal_row_print(row, stderr);
else
fputs("NONE", stderr);
fputs("\n", stderr);
#endif
return row;
}
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;
rasqal_row* row = NULL;
int count;
raptor_sequence* seq = NULL;
int failures = 0;
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);
rowsource = rasqal_new_empty_rowsource(world, query);
if(!rowsource) {
fprintf(stderr, "%s: failed to create empty rowsource\n", program);
failures++;
goto tidy;
}
row = rasqal_rowsource_read_row(rowsource);
if(!row) {
fprintf(stderr,
"%s: read_row failed to return a row for an empty rowsource\n",
program);
failures++;
goto tidy;
}
if(row->size) {
fprintf(stderr,
"%s: read_row returned an non-empty row size %d for a empty stream\n",
program, row->size);
failures++;
goto tidy;
}
count = rasqal_rowsource_get_rows_count(rowsource);
if(count != 1) {
fprintf(stderr, "%s: read_rows returned count %d for a empty stream\n",
program, count);
failures++;
goto tidy;
}
rasqal_free_row(row); row = NULL;
rasqal_free_rowsource(rowsource);
/* re-init rowsource */
rowsource = rasqal_new_empty_rowsource(world, query);
seq = rasqal_rowsource_read_all_rows(rowsource);
if(!seq) {
fprintf(stderr, "%s: read_rows returned a NULL seq for a empty stream\n",
program);
failures++;
goto tidy;
}
count = raptor_sequence_size(seq);
if(count != 1) {
fprintf(stderr, "%s: read_rows returned size %d seq for a empty stream\n",
program, count);
failures++;
goto tidy;
}
tidy:
if(row)
rasqal_free_row(row);
if(seq)
raptor_free_sequence(seq);
if(rowsource)
rasqal_free_rowsource(rowsource);
if(query)
rasqal_free_query(query);
if(world)
rasqal_free_world(world);
return failures;
}