child_qpn->table_name = new tablevar_t(
from[f]->get_interface().c_str(), from[f]->get_schema_name().c_str(), from[f]->get_ifq());
child_qpn->table_name->set_range_var(from[f]->get_var_name());
+ child_qpn->table_name->set_machine(from[f]->get_machine());
child_vec.push_back(child_qpn);
select_vec.push_back(&(child_qpn->select_list));
return(ret);
}
+static string generate_lt_test(string &lhs_op, string &rhs_op, data_type *dt){
+ string ret;
+
+ if(dt->complex_comparison(dt) ){
+ ret.append(dt->get_hfta_comparison_fcn(dt));
+ ret.append("(");
+ if(dt->is_buffer_type() )
+ ret.append("&");
+ ret.append(lhs_op);
+ ret.append(", ");
+ if(dt->is_buffer_type() )
+ ret.append("&");
+ ret.append(rhs_op );
+ ret.append(") == 1");
+ }else{
+ ret.append(lhs_op );
+ ret.append(" < ");
+ ret.append(rhs_op );
+ }
+
+ return(ret);
+}
+
static string generate_comparison(string &lhs_op, string &rhs_op, data_type *dt){
string ret;
// create a temp status tuple
- ret += "int create_temp_status_tuple(const host_tuple &tup0, const host_tuple &tup1, host_tuple& result) {\n\n";
+ ret += "int create_temp_status_tuple("+this->generate_functor_name()+"_tempeqdef *lts,"+this->generate_functor_name()+"_tempeqdef *rts, host_tuple& result) {\n\n";
ret += "\tgs_retval_t retval = 0;\n";
ret += "\tgs_int32_t problem = 0;\n";
- ret += "\tif(tup0.data){\n";
-
-// Unpack all the temporal attributes references in select list
- col_id_set found_cids;
-
- for(s=0;s<select_list.size();s++){
- if (select_list[s]->se->get_data_type()->is_temporal()) {
-// Find the set of attributes accessed in this SE
- col_id_set new_cids;
- get_new_se_cids(select_list[s]->se,found_cids, new_cids, NULL);
- }
+ for(p=0;p<temporal_dt.size();p++){
+ sprintf(tmpstr,"lhs_var");
+ ret+="\t"+temporal_dt[p]->make_host_cvar(tmpstr)+";\n";
+ sprintf(tmpstr,"rhs_var");
+ ret+="\t"+temporal_dt[p]->make_host_cvar(tmpstr)+";\n";
}
- // Deal with outer join stuff
- l_cids.clear(), r_cids.clear();
- for(ocsi=found_cids.begin();ocsi!=found_cids.end();++ocsi){
- if((*ocsi).tblvar_ref == 0) l_cids.insert((*ocsi));
- else r_cids.insert((*ocsi));
+ ret += "\tif(lts!=NULL){\n";
+ for(p=0;p<temporal_dt.size();p++){
+ ret += "\t\tlhs_var = lts->tempeq_var"+to_string(p)+";\n";
}
- unpack_null = "";
- extra_cids.clear();
- for(ocsi=r_cids.begin();ocsi!=r_cids.end();++ocsi){
- string field = (*ocsi).field;
- if(r_equiv.count(field)){
- unpack_null+="\t\tunpack_var_"+field+"_1="+generate_se_code(r_equiv[field],schema)+";\n";
- col_id_set addnl_cids;
- get_new_se_cids(r_equiv[field],l_cids,addnl_cids,NULL);
- }else{
- int schref = (*ocsi).schema_ref;
- data_type dt(schema->get_type_name(schref,field));
- literal_t empty_lit(dt.type_indicator());
- if(empty_lit.is_cpx_lit()){
- sprintf(tmpstr,"&(unpack_var_%s_1)",field.c_str());
- unpack_null += "\t"+empty_lit.to_hfta_C_code(tmpstr)+";\n";
- }else{
- unpack_null+="\tunpack_var_"+field+"_1="+empty_lit.to_hfta_C_code("")+";\n";
- }
- }
+ ret += "\t}else{\n";
+ for(p=0;p<temporal_dt.size();p++){
+ ret += "\t\tlhs_var = 0;\n";
}
- ret += gen_unpack_cids(schema, l_cids, "1", needs_xform);
- ret += gen_unpack_cids(schema, extra_cids, "1", needs_xform);
- ret += unpack_null;
+ ret += "\t}\n";
- ret+="\t}else if (tup1.data) {\n";
- unpack_null = ""; extra_cids.clear();
- for(ocsi=l_cids.begin();ocsi!=l_cids.end();++ocsi){
- string field = (*ocsi).field;
- if(l_equiv.count(field)){
- unpack_null+="\t\tunpack_var_"+field+"_0="+generate_se_code(l_equiv[field],schema)+";\n";
- col_id_set addnl_cids;
- get_new_se_cids(l_equiv[field],r_cids,addnl_cids,NULL);
- }else{
- int schref = (*ocsi).schema_ref;
- data_type dt(schema->get_type_name(schref,field));
- literal_t empty_lit(dt.type_indicator());
- if(empty_lit.is_cpx_lit()){
- sprintf(tmpstr,"&(unpack_var_%s_0)",field.c_str());
- unpack_null += "\t"+empty_lit.to_hfta_C_code(tmpstr)+";\n";
- }else{
- unpack_null+="\tunpack_var_"+field+"_0="+empty_lit.to_hfta_C_code("")+";\n";
- }
- }
+ ret += "\tif(rts!=NULL){\n";
+ for(p=0;p<temporal_dt.size();p++){
+ ret += "\t\trhs_var = rts->tempeq_var"+to_string(p)+";\n";
}
- ret += gen_unpack_cids(schema, r_cids, "1", needs_xform);
- ret += gen_unpack_cids(schema, extra_cids, "1", needs_xform);
- ret += unpack_null;
- ret+="\t}\n";
+ ret += "\t}else{\n";
+ for(p=0;p<temporal_dt.size();p++){
+ ret += "\t\trhs_var = 0;\n";
+ }
+ ret += "\t}\n";
ret += gen_init_temp_status_tuple(this->get_node_name());
// Start packing.
- ret += "//\t\tPack the fields into the tuple.\n";
- ret += gen_pack_tuple(schema,select_list,this->get_node_name(), true );
+
+
+// This is checked in the query analyzer so I think its safe,
+// But a lot of older code has complex code to propagate multiple
+// timestamps
+ for(s=0;s<select_list.size();s++){
+ scalarexp_t *se = select_list[s]->se;
+ data_type *sdt = se->get_data_type();
+ if(sdt->is_temporal()){
+ string target = "\ttuple->tuple_var"+to_string(s)+" = ";
+ if(from[0]->get_property()==0 && from[1]->get_property()==0){ // INNER
+ ret += target+"(lhs_var>rhs_var ? lhs_var : rhs_var); // INNER\n";
+ }
+ if(from[0]->get_property()!=0 && from[1]->get_property()==0){ // LEFT
+ ret += target+"lhs_var; // LEFT\n";
+// ret += target+"rhs_var; // LEFT\n";
+ }
+ if(from[0]->get_property()==0 && from[1]->get_property()!=0){ // RIGHT
+ ret += target+"rhs_var; // RIGHT\n";
+// ret += target+"lhs_var; // RIGHT\n";
+ }
+ if(from[0]->get_property()!=0 && from[1]->get_property()!=0){ // OUTER
+ ret += target+"(lhs_var<rhs_var ? lhs_var : rhs_var); // OUTER\n";
+ }
+ }
+ }
ret += "\treturn 0;\n";
for(g=0;g<gb_tbl.size();g++){
data_type *gdt = gb_tbl.get_data_type(g);
if(gdt->is_temporal()){
- sprintf(tmpstr,"last_gb%d",g);
+ sprintf(tmpstr,"curr_gb%d",g);
ret+="\t"+gb_tbl.get_data_type(g)->make_host_cvar(tmpstr)+";\n";
- sprintf(tmpstr,"last_flushed_gb%d",g);
+ sprintf(tmpstr,"last_gb%d",g);
ret+="\t"+gb_tbl.get_data_type(g)->make_host_cvar(tmpstr)+";\n";
}
}
- ret += "\tbool needs_temporal_flush;\n";
+ ret += "\tgs_int32_t needs_temporal_flush;\n";
}
// The publicly exposed functions
// temporal flush variables
// ASSUME that structured values won't be temporal.
+ gs_int32_t temporal_gb = 0;
if(uses_temporal_flush){
ret += "//\t\tInitialize temporal flush variables.\n";
for(g=0;g<gb_tbl.size();g++){
literal_t gl(gdt->type_indicator());
sprintf(tmpstr,"\tlast_gb%d = %s;\n",g, gl.to_hfta_C_code("").c_str());
ret.append(tmpstr);
+ sprintf(tmpstr,"\tcurr_gb%d = %s;\n",g, gl.to_hfta_C_code("").c_str());
+ ret.append(tmpstr);
+ temporal_gb = g;
}
}
- ret += "\tneeds_temporal_flush = false;\n";
+ ret += "\tneeds_temporal_flush = 0;\n";
}
// Init temporal attributes referenced in select list
// set flush indicator and update stored GB vars if there is any change.
if(uses_temporal_flush){
- ret+= "\tif( !( (";
+ ret+= "\tif( ( (";
bool first_one = true;
for(g=0;g<gb_tbl.size();g++){
data_type *gdt = gb_tbl.get_data_type(g);
if(gdt->is_temporal()){
- sprintf(tmpstr,"last_gb%d",g); string lhs_op = tmpstr;
+ sprintf(tmpstr,"curr_gb%d",g); string lhs_op = tmpstr;
sprintf(tmpstr,"gbval->gb_var%d",g); string rhs_op = tmpstr;
if(first_one){first_one = false;} else {ret += ") && (";}
- ret += generate_equality_test(lhs_op, rhs_op, gdt);
+ ret += generate_lt_test(lhs_op, rhs_op, gdt);
}
}
ret += ") ) ){\n";
for(g=0;g<gb_tbl.size();g++){
data_type *gdt = gb_tbl.get_data_type(g);
if(gdt->is_temporal()){
- if(gdt->is_buffer_type()){
+ temporal_gb = g;
+ if(gdt->is_buffer_type()){ // TODO first, last? or delete?
sprintf(tmpstr,"\t\t%s(&(gbval->gb_var%d),&last_gb%d);\n",gdt->get_hfta_buffer_replace().c_str(),g,g);
}else{
- sprintf(tmpstr,"\t\tlast_flushed_gb%d = last_gb%d;\n",g,g);
- ret += tmpstr;
- sprintf(tmpstr,"\t\tlast_gb%d = gbval->gb_var%d;\n",g,g);
+ ret += "\t\tif(curr_gb"+to_string(g)+"==0){\n";
+ ret += "\t\t\tlast_gb"+to_string(g)+" = gbval->gb_var"+to_string(g)+";\n";
+ ret += "\t\t}else{\n";
+ ret += "\t\t\tlast_gb"+to_string(g)+" = curr_gb"+to_string(g)+";\n";
+ ret += "\t\t}\n";
+ sprintf(tmpstr,"\t\tcurr_gb%d = gbval->gb_var%d;\n",g,g);
}
ret += tmpstr;
}
}
- ret += "\t\tneeds_temporal_flush=true;\n";
+ ret += "\t\tneeds_temporal_flush = curr_gb"+to_string (temporal_gb)+" - last_gb"+to_string(temporal_gb)+";\n";
ret += "\t\t}else{\n"
- "\t\t\tneeds_temporal_flush=false;\n"
+ "\t\t\tneeds_temporal_flush=0;\n"
"\t\t}\n";
}
//---------------------------------------------------
// Flush test
- ret += "\tbool flush_needed(){\n";
+ ret += "gs_int32_t flush_needed(){\n";
if(uses_temporal_flush){
- ret += "\t\treturn needs_temporal_flush;\n";
+ ret += "\treturn needs_temporal_flush;\n";
}else{
- ret += "\t\treturn false;\n";
+ ret += "\treturn 0;\n";
}
- ret += "\t};\n";
+ ret += "};\n";
+
+//------------------------------------------------
+// time bucket management
+ ret += "void advance_last_tb(){\n";
+ ret += "\tlast_gb"+to_string(temporal_gb)+"++;\n";
+ ret += "}\n\n";
+ ret += "void reset_last_tb(){\n";
+ ret += "\tlast_gb"+to_string(temporal_gb)+" = curr_gb"+to_string(temporal_gb)+";\n";
+ ret += "}\n\n";
//---------------------------------------------------
// create output tuple
if(sdt->is_temporal()){
sprintf(tmpstr,"\ttuple->tuple_var%d = ",s);
ret += tmpstr;
- sprintf(tmpstr,"(flush_finished) ? %s : %s ", generate_se_code(select_list[s]->se,schema).c_str(), generate_se_code_fm_aggr(select_list[s]->se,"last_flushed_gb", "", schema).c_str());
+ sprintf(tmpstr,"(flush_finished) ? %s : %s ", generate_se_code(select_list[s]->se,schema).c_str(), generate_se_code_fm_aggr(select_list[s]->se,"last_gb", "", schema).c_str());
ret += tmpstr;
ret += ";\n";
}
Code Review / com / gs-lite.git / blobdiff