max/min bug?

[mervynzhang]

最新代码， max/min一个 INTEGER 字段的时候报错了， max/min VARCHAR 字段没报错， 老版本没报错。

sql> select max(CUST_ID) from CUSTOMER;
Error: General error: "java.lang.ClassCastException: class com.lealone.db.row.Row cannot be cast to class com.lealone.db.value.Value (com.lealone.db.row.Row and com.lealone.db.value.Value are in unnamed module of loader 'app')"; SQL statement:
select max(CUST_ID) from CUSTOMER [50000-0]

sql> select (CUST_ID) from CUSTOMER;    
+---------+
| CUST_ID |
+---------+
| 1       |
| 2       |

...
sql> select count(CUST_ID) from CUSTOMER; 
+----------------+
| COUNT(CUST_ID) |
+----------------+
| 6              |
+----------------+
(1 row, 2 ms)

sql> select min(name) from CUSTOMER;      
+-----------+
| MIN(NAME) |
+-----------+
| John      |
+-----------+

[mervynzhang]

client退出的时候， server端刷屏报下边的错

16:06:19.583 [ScheduleService-7] WARN  com.lealone.net.nio.NioEventLoop - Failed to read remote address[127.0.0.1:49679]: Connection reset
16:06:19.584 [ScheduleService-7] WARN  com.lealone.server.scheduler.GlobalScheduler - Failed to runEventLoop
java.lang.NullPointerException: Cannot invoke "java.nio.ByteBuffer.limit()" because "this.buff" is null
        at com.lealone.db.DataBuffer.clear(DataBuffer.java:496) ~[lealone-6.1.0-SNAPSHOT.jar:?]
        at com.lealone.net.NetBuffer.reset(NetBuffer.java:87) ~[lealone-6.1.0-SNAPSHOT.jar:?]
        at com.lealone.net.NetBuffer.recycle(NetBuffer.java:81) ~[lealone-6.1.0-SNAPSHOT.jar:?]
        at com.lealone.net.TransferInputStream.closeForce(TransferInputStream.java:115) ~[lealone-6.1.0-SNAPSHOT.jar:?]
        at com.lealone.server.TcpServerConnection.close(TcpServerConnection.java:222) ~[lealone-6.1.0-SNAPSHOT.jar:?]
        at com.lealone.server.AsyncServer.removeConnection(AsyncServer.java:133) ~[lealone-6.1.0-SNAPSHOT.ja        at com.lealone.server.TcpServerConnection.handleException(TcpServerConnection.java:65) ~[lealone-6.1.0-SNAPSHOT.jar:?]
        at com.lealone.net.nio.NioEventLoop.handleException(NioEventLoop.java:540) ~[lealone-6.1.0-SNAPSHOT.jar:?]
        at com.lealone.net.nio.NioEventLoop.handleReadException(NioEventLoop.java:527) ~[lealone-6.1.0-SNAPSHOT.jar:?]
        at com.lealone.net.nio.NioEventLoop.read(NioEventLoop.java:221) ~[lealone-6.1.0-SNAPSHOT.jar:?]     
        at com.lealone.net.nio.NioEventLoop.handleSelectedKeys(NioEventLoop.java:465) ~[lealone-6.1.0-SNAPSHOT.jar:?]
        at com.lealone.net.nio.NioEventLoop.handleSelectedKeys(NioEventLoop.java:450) ~[lealone-6.1.0-SNAPSHOT.jar:?]
        at com.lealone.server.scheduler.GlobalScheduler.runEventLoop(GlobalScheduler.java:441) [lealone-6.1.0-SNAPSHOT.jar:?]
        at com.lealone.server.scheduler.GlobalScheduler.run(GlobalScheduler.java:75) [lealone-6.1.0-SNAPSHOT.jar:?]
        at java.lang.Thread.run(Thread.java:840) [?:?]

[codefollower]

lealone-6.1.0-SNAPSHOT 的代码还在快速迭代中，还没有稳定