void* ExprUnary::ExprEvaluate(ExprEvalCnxt& eecnxt) {
OperFuncInfoData oper_info;
oper_info.args_[0] = arg0_->ExprEvaluate(eecnxt);
oper_info.args_num_ = 1;
oper_info.result_ = value_;
data_type_oper_func_(&oper_info);
return type_cast_func_(oper_info.result_, value_);
}
void* ExprDate::ExprEvaluate(void* tuple, Schema* schema) {
OperFuncInfoData oper_info;
oper_info.args_[0] = arg0_->ExprEvaluate(tuple, schema);
oper_info.args_[1] = arg1_->ExprEvaluate(tuple, schema);
oper_info.args_num_ = 2;
oper_info.result_ = value_;
DataTypeOperFunc_(&oper_info);
return type_cast_func_(oper_info.result_, value_);
}
void* ExprCaseWhen::ExprEvaluate(void* tuple, Schema* schema) {
ExprNode* then = case_then_[case_then_.size() - 1];
void* result;
for (int i = 0; i < case_when_.size(); i++) {
if (*static_cast<bool*>(case_when_[i]->ExprEvaluate(tuple, schema)) ==
true) {
then = case_then_[i];
break;
}
} // case_then_ shouldn't be NULL, checked before
result = then->ExprEvaluate(tuple, schema);
return type_cast_func_(result, value_);
}
void* ExprIn::ExprEvaluate(ExprEvalCnxt& eecnxt) {
bool result = false;
bool tmp_result = true;
for (int i = 0; i < right_node_.size() && !result; ++i) {
tmp_result = true;
for (int j = 0; j < right_node_[i].size() && tmp_result; ++j) {
tmp_result = *(static_cast<bool*>(
ExprItemEvaluate(eecnxt, cmp_expr_[j], right_node_[i][j])));
}
result = tmp_result;
}
return type_cast_func_(&result, value_);
}
void* ExprColumn::ExprEvaluate(ExprEvalCnxt& eecnxt) {
void* result = eecnxt.schema[table_id_]->getColumnAddess(
attr_id_, eecnxt.tuple[table_id_]);
return type_cast_func_(result, value_);
}
