static int
rasqal_aggregation_rowsource_ensure_variables(rasqal_rowsource* rowsource,
void *user_data)
{
rasqal_aggregation_rowsource_context* con;
int offset;
int i;
con = (rasqal_aggregation_rowsource_context*)user_data;
if(rasqal_rowsource_ensure_variables(con->rowsource))
return 1;
rowsource->size = 0;
if(rasqal_rowsource_copy_variables(rowsource, con->rowsource))
return 1;
con->input_values_count = rowsource->size;
for(i = 0; i < con->expr_count; i++) {
rasqal_agg_expr_data* expr_data = &con->expr_data[i];
offset = rasqal_rowsource_add_variable(rowsource, expr_data->variable);
if(offset < 0)
return 1;
}
return 0;
}
/**
* rasqal_rowsource_copy_variables:
* @dest_rowsource: destination rowsource to copy into
* @src_rowsource: source rowsource to copy from
*
* INTERNAL - Copy a variables projection from one rowsource to another
*
* This adds new variables from @src_rowsource to the
* @dest_rowsource, it does not add duplicates.
*
* Return value: 0 on success, non-0 on failure
**/
int
rasqal_rowsource_copy_variables(rasqal_rowsource *dest_rowsource,
rasqal_rowsource *src_rowsource)
{
int i;
for(i = 0; i < src_rowsource->size; i++) {
rasqal_variable* v;
v = rasqal_rowsource_get_variable_by_offset(src_rowsource, i);
if(rasqal_rowsource_add_variable(dest_rowsource, v) < 0)
return 1;
}
return 0;
}
static int
rasqal_graph_rowsource_ensure_variables(rasqal_rowsource* rowsource,
void *user_data)
{
rasqal_graph_rowsource_context* con;
con = (rasqal_graph_rowsource_context*)user_data;
rasqal_rowsource_ensure_variables(con->rowsource);
rowsource->size = 0;
/* Put GRAPH variable first in result row */
rasqal_rowsource_add_variable(rowsource, con->var);
rasqal_rowsource_copy_variables(rowsource, con->rowsource);
return 0;
}
static int
rasqal_join_rowsource_ensure_variables(rasqal_rowsource* rowsource,
void *user_data)
{
rasqal_join_rowsource_context* con;
int map_size;
int i;
con = (rasqal_join_rowsource_context*)user_data;
if(rasqal_rowsource_ensure_variables(con->left))
return 1;
if(rasqal_rowsource_ensure_variables(con->right))
return 1;
map_size = rasqal_rowsource_get_size(con->right);
con->right_map = RASQAL_MALLOC(int*, RASQAL_GOOD_CAST(size_t,
sizeof(int) * RASQAL_GOOD_CAST(size_t, map_size)));
if(!con->right_map)
return 1;
rowsource->size = 0;
/* copy in variables from left rowsource */
if(rasqal_rowsource_copy_variables(rowsource, con->left))
return 1;
/* add any new variables not already seen from right rowsource */
for(i = 0; i < map_size; i++) {
rasqal_variable* v;
int offset;
v = rasqal_rowsource_get_variable_by_offset(con->right, i);
if(!v)
break;
offset = rasqal_rowsource_add_variable(rowsource, v);
if(offset < 0)
return 1;
con->right_map[i] = offset;
}
return 0;
}
/**
* rasqal_rowsource_copy_variables:
* @dest_rowsource: destination rowsource to copy into
* @src_rowsource: source rowsource to copy from
*
* INTERNAL - Copy a variables projection from one rowsource to another
*
* This adds new variables from @src_rowsource to the
* @dest_rowsource, it does not add duplicates.
*
* Return value: 0 on success, non-0 on failure
**/
int
rasqal_rowsource_copy_variables(rasqal_rowsource *dest_rowsource,
rasqal_rowsource *src_rowsource)
{
int i;
for(i = 0; i < src_rowsource->size; i++) {
rasqal_variable* v;
v = rasqal_rowsource_get_variable_by_offset(src_rowsource, i);
if(!v) {
RASQAL_DEBUG5("%s src rowsource %p failed to return variable at offset %d, size %d\n",
src_rowsource->handler->name, src_rowsource,
i, src_rowsource->size);
return 1;
}
if(rasqal_rowsource_add_variable(dest_rowsource, v) < 0)
return 1;
}
return 0;
}
static int
rasqal_rowsequence_rowsource_ensure_variables(rasqal_rowsource* rowsource,
void *user_data)
{
rasqal_rowsequence_rowsource_context* con;
int i;
con = (rasqal_rowsequence_rowsource_context*)user_data;
rowsource->size = 0;
for(i = 0; i < raptor_sequence_size(con->vars_seq); i++) {
rasqal_variable* v;
v = (rasqal_variable*)raptor_sequence_get_at(con->vars_seq, i);
rasqal_rowsource_add_variable(rowsource, v);
}
raptor_free_sequence(con->vars_seq);
con->vars_seq = NULL;
return 0;
}
static void
rasqal_sparql_xml_sax2_start_element_handler(void *user_data,
raptor_xml_element *xml_element)
{
rasqal_rowsource_sparql_xml_context* con;
int i;
raptor_qname* name;
rasqal_sparql_xml_read_state state=STATE_unknown;
int attr_count;
con=(rasqal_rowsource_sparql_xml_context*)user_data;
name=raptor_xml_element_get_name(xml_element);
for(i=STATE_first; i <= STATE_last; i++) {
if(!strcmp((const char*)raptor_qname_get_local_name(name),
sparql_xml_element_names[i])) {
state=(rasqal_sparql_xml_read_state)i;
con->state=state;
}
}
if(state == STATE_unknown) {
fprintf(stderr, "UNKNOWN element %s\n", raptor_qname_get_local_name(name));
con->failed++;
}
#ifdef TRACE_XML
if(con->trace) {
pad(stderr, con->depth);
fprintf(stderr, "Element %s (%d)\n", raptor_qname_get_local_name(name),
state);
}
#endif
attr_count=raptor_xml_element_get_attributes_count(xml_element);
con->name=NULL;
con->datatype=NULL;
con->language=NULL;
if(attr_count > 0) {
raptor_qname** attrs=raptor_xml_element_get_attributes(xml_element);
for(i=0; i < attr_count; i++) {
#ifdef TRACE_XML
if(con->trace) {
pad(stderr, con->depth+1);
fprintf(stderr, "Attribute %s='%s'\n",
raptor_qname_get_local_name(attrs[i]),
raptor_qname_get_value(attrs[i]));
}
#endif
if(!strcmp((const char*)raptor_qname_get_local_name(attrs[i]),
"name"))
con->name=(const char*)raptor_qname_get_counted_value(attrs[i],
&con->name_length);
else if(!strcmp((const char*)raptor_qname_get_local_name(attrs[i]),
"datatype"))
con->datatype=(const char*)raptor_qname_get_value(attrs[i]);
}
}
if(raptor_xml_element_get_language(xml_element)) {
con->language=(const char*)raptor_xml_element_get_language(xml_element);
#ifdef TRACE_XML
if(con->trace) {
pad(stderr, con->depth+1);
fprintf(stderr, "xml:lang '%s'\n", con->language);
}
#endif
}
switch(state) {
case STATE_variable:
if(con->name) {
unsigned char* var_name;
rasqal_variable *v;
var_name = (unsigned char*)RASQAL_MALLOC(cstring, con->name_length+1);
memcpy(var_name, con->name, con->name_length + 1);
v = rasqal_variables_table_add(con->vars_table,
RASQAL_VARIABLE_TYPE_NORMAL,
var_name, NULL);
if(v)
rasqal_rowsource_add_variable(con->rowsource, v);
}
break;
case STATE_result:
if(1) {
con->row = rasqal_new_row(con->rowsource);
RASQAL_DEBUG2("Made new row %d\n", con->offset);
con->offset++;
}
break;
case STATE_binding:
con->result_offset = rasqal_rowsource_get_variable_offset_by_name(con->rowsource, (const unsigned char*)con->name);
break;
case STATE_sparql:
case STATE_head:
case STATE_results:
case STATE_literal:
case STATE_bnode:
case STATE_uri:
case STATE_unknown:
default:
break;
}
con->depth++;
}
