Usage Information
The Extract Text processor provides different results based on whether named capture groups are enabled.
Example
Here is a like for like example that illustrates this.
Data
foo\r\nbar1\r\nbar2\r\nbar3\r\nhello\r\nworld\r\n
|
Without named capture groups
Configuration
| Property Name |
Property Value |
| regex.result1 |
(?s)(.*) |
| regex.result2 |
(?s).*(bar1).* |
| regex.result3 |
(?s).*?(bar\\d).* |
| regex.result4 |
(?s).*?(?:bar\\d).*?(bar\\d).*?(bar3).* |
| regex.result5 |
(?s).*(bar\\d).* |
| regex.result6 |
(?s)^(.*)$ |
| regex.result7 |
(?s)(XXX) |
Results
| Attribute Name |
Attribute Value |
| regex.result1 |
foo\r\nbar1\r\nbar2\r\nbar3\r\nhello\r\nworld\r\n
|
| regex.result2 |
bar1 |
| regex.result3 |
bar1 |
| regex.result4 |
bar2 |
| regex.result4.0 |
foo\r\nbar1\r\nbar2\r\nbar3\r\nhello\r\nworld\r\n
|
| regex.result4.1 |
bar2 |
| regex.result4.2 |
bar3 |
| regex.result5 |
bar3 |
| regex.result6 |
foo\r\nbar1\r\nbar2\r\nbar3\r\nhello\r\nworld\r\n
|
| regex.result7 |
|
With named capture groups
Configuration
| Property Name |
Property Value |
| Enable named group support |
True |
| regex.result1 |
(?s)(?<ALL>.* |
| regex.result2 |
(?s).*(?<BAR1>bar1).* |
| regex.result3 |
(?s).*?(?<BAR1>bar\d).* |
| regex.result4 |
(?s).*?(?:bar\d).*?(?<BAR2>bar\d).*?(?<BAR3>bar3).* |
| regex.result5 |
(?s).*(?<BAR3>bar\d).* |
| regex.result6 |
(?s)^(?<ALL>.*)$ |
| regex.result7 |
(?s)(?<MISS>XXX) |
Results
| Attribute Name |
Attribute Value |
| regex.result1 |
foo\r\nbar1\r\nbar2\r\nbar3\r\nhello\r\nworld\r\n
|
| regex.result2.BAR1 |
bar1 |
| regex.result3.BAR1 |
bar1 |
| regex.result4.BAR2 |
bar2 |
| regex.result4.BAR2 |
bar2 |
| regex.result4.BAR3 |
bar3 |
| regex.result5.BAR3 |
bar3 |
| regex.result6.ALL |
foo\r\nbar1\r\nbar2\r\nbar3\r\nhello\r\nworld\r\n
|
| regex.result7.MISS |
|