Hi Mike, If you want to replace “value1” only when it is preceded by “key=“ and have the result be “key=replacementvalue1”, try this pair of configuration values:
regex: (?<=key=)(\S+) matching group: 1 The (?<=…) construction is a lookbehind, so the provided sequence will only match if it follows this, but won’t capture it as part of the match. Andy LoPresto alopre...@apache.org alopresto.apa...@gmail.com PGP Fingerprint: 70EC B3E5 98A6 5A3F D3C4 BACE 3C6E F65B 2F7D EF69 > On Apr 12, 2017, at 9:40 AM, Mika Borner <n...@my2ndhead.com> wrote: > > Hi all > > I'm not sure I understand how the ReplaceTextWithMapping processor works. > Let's say my flowfile content looks like: > > xyz key=value1 foo bar value1 > > My mapping file looks like: > > value1 replacementvalue1 > > value2 replacementvalue2 > > I just want to replace the occurrence of "value1" only when it's perpended > with "key=". Therefore I'm writing the Regex "key=(\S+)" and a "Matching > Group" of 1. > > This unfortunately doesn't work. > > Can someone explain, what's wrong? > > Thanks! > > Mika> > > > > > >
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