void PrintItemTree(Item* item, int indent)
{
#ifdef PURE_LIBRARY
	BHERROR("NOT IMPLEMENTED! Depends on MySQL code.");
#else
	static const char* name_of[] = {
			"FIELD_ITEM", "FUNC_ITEM", "SUM_FUNC_ITEM", "STRING_ITEM", "INT_ITEM",
			"REAL_ITEM", "NULL_ITEM", "VARBIN_ITEM", "COPY_STR_ITEM", "FIELD_AVG_ITEM",
			"DEFAULT_VALUE_ITEM", "PROC_ITEM", "COND_ITEM", "REF_ITEM", "FIELD_STD_ITEM",
			"FIELD_VARIANCE_ITEM", "INSERT_VALUE_ITEM", "SUBSELECT_ITEM", "ROW_ITEM",
			"CACHE_ITEM", "TYPE_HOLDER", "PARAM_ITEM", "TRIGGER_FIELD_ITEM", "DECIMAL_ITEM",
			"XPATH_NODESET", "XPATH_NODESET_CMP", "VIEW_FIXER_ITEM" };
	static const char* sum_name_of[] =  {
	    "COUNT_FUNC", "COUNT_DISTINCT_FUNC", "SUM_FUNC", "SUM_DISTINCT_FUNC", "AVG_FUNC",
	    "AVG_DISTINCT_FUNC", "MIN_FUNC", "MAX_FUNC", "STD_FUNC",
	    "VARIANCE_FUNC", "SUM_BIT_FUNC", "UDF_SUM_FUNC", "GROUP_CONCAT_FUNC" };

	for(int i = 0; i <= indent; i++)
		fprintf(stderr, "*");
	fprintf(stderr, " ");
	indent += 1;

	if(!item) {
		fprintf(stderr, "NULL item\n");
		return;
	}

	const char* name;
    Item::Type type = item->type();

	if((int)type < sizeof(name_of)/sizeof(*name_of))
		name = name_of[type];
	else name = "BHFIELD_ITEM";

	const char* result = "<unknown result type>";
    switch (item->result_type()) {
		case STRING_RESULT: result = "STRING_RESULT"; break;
		case INT_RESULT: result = "INT_RESULT"; break;
		case REAL_RESULT: result = "REAL_RESULT"; break;
		case DECIMAL_RESULT: result = "DECIMAL_RESULT"; break;
    }
    fprintf(stderr, "%s %s @%p %s %s max_length=%d",
    		name, item->full_name(),  (void*)item,
    		FieldType(item->field_type()), result, item->max_length);

    if(item->result_type() == DECIMAL_RESULT)
    	fprintf(stderr, " [prec=%d,dec=%d,int=%d]",
    			item->decimal_precision(), (int)item->decimals, item->decimal_int_part());

    switch(type) {
		case Item::FUNC_ITEM: {
			Item_func* func = static_cast <Item_func*> (item);

			fprintf(stderr, " func_name=%s\n", func->func_name());
			String str;
			// GA, print function takes extra argument but do not use it in the base class.
			func->print(&str,QT_ORDINARY);
			fprintf(stderr, " f contents: %s\n", str.c_ptr_safe());

			Item** args = func->arguments();
			for(uint i = 0; i < func->argument_count(); i++)
				PrintItemTree(args[i], indent);
			return;
		}
		case Item::COND_ITEM: {
			Item_cond* cond = static_cast <Item_cond*> (item);

			fprintf(stderr, " func_name=%s\n", cond->func_name());

			List_iterator<Item> li(*cond->argument_list());
			Item* arg;
			while ((arg = li++))
				PrintItemTree(arg, indent);
			return;
		}
		case Item::SUM_FUNC_ITEM: {
			Item_sum* sum_func = static_cast <Item_sum*> (item);

			uint index = sum_func->sum_func();
			const char* sumname;
			if (index >= sizeof(sum_name_of)/sizeof(*sum_name_of))
				sumname = "<UNKNOWN>";
			else
				sumname = sum_name_of[index];

			fprintf(stderr, "  %s\n", sumname);

			Item** args = sum_func->args;
			uint args_count = sum_func->arg_count;
			for(uint i=0; i < args_count; i++)
				PrintItemTree(args[i], indent);
			return;
		}
		case Item::REF_ITEM: {
			Item_ref* ref = static_cast<Item_ref*> (item);
			Item* real = ref->real_item();
			fprintf(stderr, "\n");
			if(ref != real) PrintItemTree(real, indent);
			return;
		}
		case Item::INT_ITEM: {
			Item_int_with_ref* int_ref = dynamic_cast<Item_int_with_ref*>(item);
			if(!int_ref)
				break;
			// else item is an instance of Item_int_with_ref, not Item_int
			fprintf(stderr, " [Item_int_with_ref]\n");
			PrintItemTree(int_ref->real_item(), indent);
			return;
		}
		case Item::SUBSELECT_ITEM:
			Item_subselect* ss = dynamic_cast<Item_subselect*>(item);
			fprintf(stderr, " subselect type %d\n", ss->substype());
			String str;
			// GA, print function takes extra argument but do not use it.
			ss->get_unit()->print(&str, QT_ORDINARY);
			fprintf(stderr, "%s\n", str.c_ptr_safe());
    }

    fprintf(stderr, "\n");
#endif
}
static int is_columnstore_files_fill(THD* thd, TABLE_LIST* tables, COND* cond)
{
    BRM::DBRM* emp = new BRM::DBRM();
    BRM::OID_t cond_oid = 0;
    TABLE* table = tables->table;

    if (!emp || !emp->isDBRMReady())
    {
        return 1;
    }

    if (cond && cond->type() == Item::FUNC_ITEM)
    {
        Item_func* fitem = (Item_func*) cond;

        if ((fitem->functype() == Item_func::EQ_FUNC) && (fitem->argument_count() == 2))
        {
            if (fitem->arguments()[0]->real_item()->type() == Item::FIELD_ITEM &&
                    fitem->arguments()[1]->const_item())
            {
                // WHERE object_id = value
                Item_field* item_field = (Item_field*) fitem->arguments()[0]->real_item();

                if (strcasecmp(item_field->field_name.str, "object_id") == 0)
                {
                    cond_oid = fitem->arguments()[1]->val_int();
                    return generate_result(cond_oid, emp, table, thd);
                }
            }
            else if (fitem->arguments()[1]->real_item()->type() == Item::FIELD_ITEM &&
                     fitem->arguments()[0]->const_item())
            {
                // WHERE value = object_id
                Item_field* item_field = (Item_field*) fitem->arguments()[1]->real_item();

                if (strcasecmp(item_field->field_name.str, "object_id") == 0)
                {
                    cond_oid = fitem->arguments()[0]->val_int();
                    return generate_result(cond_oid, emp, table, thd);
                }
            }
        }
        else if (fitem->functype() == Item_func::IN_FUNC)
        {
            // WHERE object_id in (value1, value2)
            Item_field* item_field = (Item_field*) fitem->arguments()[0]->real_item();

            if (strcasecmp(item_field->field_name.str, "object_id") == 0)
            {
                for (unsigned int i = 1; i < fitem->argument_count(); i++)
                {
                    cond_oid = fitem->arguments()[i]->val_int();
                    int result = generate_result(cond_oid, emp, table, thd);

                    if (result)
                        return 1;
                }
            }
        }
        else if (fitem->functype() == Item_func::UNKNOWN_FUNC &&
                 strcasecmp(fitem->func_name(), "find_in_set") == 0)
        {
            // WHERE FIND_IN_SET(object_id, values)
            String* tmp_var = fitem->arguments()[1]->val_str();
            std::stringstream ss(tmp_var->ptr());

            while (ss >> cond_oid)
            {
                int ret = generate_result(cond_oid, emp, table, thd);

                if (ret)
                    return 1;

                if (ss.peek() == ',')
                    ss.ignore();
            }
        }