Question

我有包含该对象的列表，我想要更改它。

$ ./cassandrabackup.sh
creating snapshot 20170823132936
Requested creating snapshot(s) for [demokeyspace] with snapshot name [20170823132936] and options {skipFlush=false}
Snapshot directory: 20170823132936
sync to backup location /tmp/backup/host1.domain.tld
building file list ...
6 files to consider
data1/
data1/demokeyspace/
data1/demokeyspace/demotable-0bbb579087ef11e7aa786377cd3ba823/
data1/demokeyspace/demotable-0bbb579087ef11e7aa786377cd3ba823/snapshots/
data1/demokeyspace/demotable-0bbb579087ef11e7aa786377cd3ba823/snapshots/20170823132936/
data1/demokeyspace/demotable-0bbb579087ef11e7aa786377cd3ba823/snapshots/20170823132936/manifest.json
             13 100%    0.00kB/s    0:00:00 (xfr#1, to-chk=0/6)

sent 305 bytes  received 50 bytes  710.00 bytes/sec
total size is 13  speedup is 0.04
removing snapshot 20170823132936
Requested clearing snapshot(s) for [all keyspaces] with snapshot name [20170823132936]
$ ifjke@fsca01:~$ find /tmp/backup/
/tmp/backup/
/tmp/backup/host1.domain.tld
/tmp/backup/host1.domain.tld/data2
/tmp/backup/host1.domain.tld/data2/demokeyspace
/tmp/backup/host1.domain.tld/data2/demokeyspace/demotable-0bbb579087ef11e7aa786377cd3ba823
/tmp/backup/host1.domain.tld/data2/demokeyspace/demotable-0bbb579087ef11e7aa786377cd3ba823/snapshots
/tmp/backup/host1.domain.tld/data2/demokeyspace/demotable-0bbb579087ef11e7aa786377cd3ba823/snapshots/20170823125951
/tmp/backup/host1.domain.tld/data2/demokeyspace/demotable-0bbb579087ef11e7aa786377cd3ba823/snapshots/20170823125951/manifest.json
/tmp/backup/host1.domain.tld/data2/demokeyspace/demotable-0bbb579087ef11e7aa786377cd3ba823/snapshots/20170823130014
/tmp/backup/host1.domain.tld/data2/demokeyspace/demotable-0bbb579087ef11e7aa786377cd3ba823/snapshots/20170823130014/manifest.json
/tmp/backup/host1.domain.tld/data1
/tmp/backup/host1.domain.tld/data1/demokeyspace
/tmp/backup/host1.domain.tld/data1/demokeyspace/demotable-0bbb579087ef11e7aa786377cd3ba823
/tmp/backup/host1.domain.tld/data1/demokeyspace/demotable-0bbb579087ef11e7aa786377cd3ba823/snapshots
/tmp/backup/host1.domain.tld/data1/demokeyspace/demotable-0bbb579087ef11e7aa786377cd3ba823/snapshots/20170823132936
/tmp/backup/host1.domain.tld/data1/demokeyspace/demotable-0bbb579087ef11e7aa786377cd3ba823/snapshots/20170823132936/manifest.json
$

Answer 1

首先，模板不应修改数据模型。如果你真的想这样做，请三思而后行。

如果你仍然想这样做，FreeMarker没有明确的支持，但如果usr在Java中有一个公共setName(String)方法，你可以调用它：${usr.setName("Jhone")}

不确定/*It is not reflect into the list*/的意思。由于用户对象来自列表，更改用户对象也将更改列表中的用户对象。

如何在Freemarker中更新列表索引对象值

1 个答案: