英文:
JOLT: select/change child by attribute
问题
我对JOLT还很陌生，并进行了很多搜索（可能使用了错误的搜索词），但无法找到解决我看起来很简单的问题的答案。
我想要更改由另一个属性标识的子项的属性。
所以我有这个输入：
{
"Level0": {
"Level-1": {
"ID": 10,
"Status": "OK"
},
"Level-2": {
"ID": 20,
"Status": "OK"
},
"Level-3": {
"ID": 30,
"Status": "OK"
}
}
}
并希望更改ID=20的子项的'Status'值，以便获得预期输出：
{
"Level0": {
"Level-1": {
"ID": 10,
"Status": "OK"
},
"Level-2": {
"ID": 20,
"Status": "Running"
},
"Level-3": {
"ID": 30,
"Status": "OK"
}
}
}
我尝试了许多使用"modify-overwrite-beta"的变体，但无法获得所需的结果。
可以有人帮助吗？
英文:
I'm new to JOLT and googled a lot (maybe using wrong search terms) but could not find an answer to my seemingly simple problem.
I want to change an attribute of a child which is identified by another attribute.
So I have this input:
{
"Level0": {
"Level-1": {
"ID": 10,
"Status": "OK",
},
"Level-2": {
"ID": 20,
"Status": "OK",
},
"Level-3": {
"ID": 30,
"Status": "OK",
}
}
}
and want to change the 'Status' value of the child with ID=20 so that this is the expected output:
{
"Level0": {
"Level-1": {
"ID": 10,
"Status": "OK",
},
"Level-2": {
"ID": 20,
"Status": "Running",
},
"Level-3": {
"ID": 30,
"Status": "OK",
}
}
}
I tried many variants with "modify-overwrite-beta" but could not get the desired result.
Can someone help please?
答案1
得分: 0
你可以在shift转换规范中使用条件，例如：
[
{
"operation": "shift",
"spec": {
"*": { // 最外层级
"*": {
"ID": {
"@": "&3.&2.&1", // 复制ID的值
"20": { "#Running": "&4.&3.Status" }, // 通过前缀#表示固定值
"*": { "@2,Status": "&4.&3.Status" } // 如果ID不等于20，则保持“Status”的当前值
}
}
}
}
}
]
其中带有*和&符号（&1，&2...）分别表示沿着树上升相应层级时接收到的节点的名称。
该站点http://jolt-demo.appspot.com/上的演示是：
英文:
You can use a conditional within a shift transformation specification such as
[
{
"operation": "shift",
"spec": {
"*": { // the outermost level
"*": {
"ID": {
"@": "&3.&2.&1", // replicate the ID's value
"20": { "#Running": "&4.&3.Status" }, // express fixed value by prefixing it with #
"*": { "@2,Status": "&4.&3.Status" } // if ID is not equal to 20, the keep the current value of the "Status"
}
}
}
}
}
]
where the identifiers with ampersands( &1,&2... ) represent the name of the nodes received by going that much level up the tree respectively.
the demo on the site http://jolt-demo.appspot.com/ is :
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