[英]How to mask specific elements in HL7?
Currently I am learning how to work with HL7 and how to parse it in python. 目前,我正在学习如何使用HL7以及如何在python中解析它。 Now I was wondering what happens if a value in a HL7 segment contains a pipe sign, eg '|'. 现在,我想知道如果HL7段中的值包含管道符号(例如'|')会发生什么情况。 How is this sign handled? 该标志如何处理? If there is no masking, it would lead to a crash of the HL7 parser. 如果没有屏蔽,则将导致HL7解析器崩溃。 Is there a masking possibility? 有掩盖的可能吗?
\\F\\ \\F\\
You should read the relevant sections of chapter 2 of the version 2 standard about how escaping works in version 2. 您应该阅读版本2标准第2章的相关部分,以了解版本2中转义的工作方式。
The HL7 structure has defined escape sequences for the separators like |
HL7结构为分隔符(例如|
定义了转义序列。 . 。 When you look at a HL7 message, the used five delimiters are right after the MSH: 当您查看HL7消息时,使用的五个定界符就在MSH之后:
MSH|^~\&
F
是字段分隔符F
S
^成分分离器S
R
〜是重复分隔符(对于第二级元素) R
E
\\是转义字符 E
T
&是子成分分隔符T
So to escape one of the special characters like |
因此,要逃避特殊字符之一,例如|
, you have to take the escape character and then add the defined letter (F,S, etc.) ,您必须先使用转义符,然后添加定义的字母(F,S等)
So in above case, to escape the |
因此,在上述情况下,要逃避|
you would have to put \\F\\
. 您必须输入\\F\\
。 Or escaping the escape character is \\E\\
. 或转义转义字符为\\E\\
。
If you like you can also change the delimiters after the MSH completely, but I don't recommend that. 如果您愿意,也可以在MSH之后完全更改定界符,但我不建议这样做。
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