join_fn(sieve_relation_plugin & p, const relation_base & r1, const relation_base & r2, unsigned col_cnt,
const unsigned * cols1, const unsigned * cols2, relation_join_fn * inner_join_fun)
: convenient_relation_join_fn(r1.get_signature(), r2.get_signature(), col_cnt, cols1, cols2),
m_plugin(p),
m_inner_join_fun(inner_join_fun) {
bool r1_sieved = r1.get_plugin().is_sieve_relation();
bool r2_sieved = r2.get_plugin().is_sieve_relation();
const sieve_relation * sr1 = r1_sieved ? static_cast<const sieve_relation *>(&r1) : 0;
const sieve_relation * sr2 = r2_sieved ? static_cast<const sieve_relation *>(&r2) : 0;
if(r1_sieved) {
m_result_inner_cols.append(sr1->m_inner_cols);
}
else {
m_result_inner_cols.resize(r1.get_signature().size(), true);
}
if(r2_sieved) {
m_result_inner_cols.append(sr2->m_inner_cols);
}
else {
m_result_inner_cols.resize(m_result_inner_cols.size() + r2.get_signature().size(), true);
}
}
virtual void get_labels(svector<symbol> & r) {
buffer<symbol> tmp;
ctx().get_relevant_labels(0, tmp);
r.append(tmp.size(), tmp.c_ptr());
}
virtual void get_labels(svector<symbol> & r) {
SASSERT(m_context);
buffer<symbol> tmp;
m_context->get_relevant_labels(0, tmp);
r.append(tmp.size(), tmp.c_ptr());
}