yoyow contract of NFT
合约的管理员可以固定指定资产的上限，默认为28182，如果需要请修改代码中的SYSTEM_MANAGER_UID为其他uid
命令行测试步骤说明 0,编译合约 gxx -g nft.abi nft.cpp gxx -o nft.wast nft.cpp
1,布置合约（先将步骤0编译的nft.abi和nft.wasm拷贝至yoyow_client所在目录的nft子目录内） deploy_contract 28182 0 0 ./nft false true
2,初始化 call_contract 28182 28182 null init "{"version":"0"}" false true
3,创建NFT call_contract 28182 28182 null create "{"issuer":"28182", "category":"tokentypes","tkname":"testnft","burnable":"1","transferable":"1","uri":"string","max_issue_days":"30","max_supply":"10000"}" false true
4,分发NFT call_contract 28182 28182 null issue "{"to":"25997","category":"tokentypes", "tkname":"testnft","quantity":"1","relative_uri":"http://www.baidu.com\",\"memo\":\"testmemo1\"}" false true call_contract 28182 28182 null issue "{"to":"25997","category":"tokentypes", "tkname":"testnft","quantity":"1","relative_uri":"http://www.baidu2.com\",\"memo\":\"testmemo2\"}" false true
5,销毁NFT call_contract 25997 28182 null burn "{"owner":"25997","item_ids":[2]}" false true
6,转账NFT call_contract 25997 28182 null transfer "{"from":"25997","to":"28182","item_ids":[1],"memo":"testmemo3"}" false true
7,锁定上限,不可再增发 call_contract 28182 28182 null fixmaxsupply "{"category":"tokentypes","tkname":"testnft"}" false true
查询相关操作 查询ABI: get_account init10
查询合约有哪些表 get_contract_tables init10
查询已经分发的NFT 1,根据id查询 get_table_rows_ex init10 item {"lower_bound":0,"upper_bound":-1,"limit":10,"index_position":"1","reverse":false}
2,根据持有者查询(lower_bound设为持有者的uid) get_table_rows_ex init10 item {"lower_bound":28182,"upper_bound":-1,"limit":10,"index_position":"2","reverse":false}
查询账号28182的token余额 get_table_objects 28182 28182 false accounts 0 -1 100
查询category为"tokentypes"的token get_table_objects 28182 tokentypes true itemstats 0 -1 100
更新合约 update_contract init10 ./nft false true