Copilot commented on code in PR #13673:
URL: https://github.com/apache/skywalking/pull/13673#discussion_r2703027121
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docs/en/concepts-and-designs/oal.md:
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@@ -47,10 +47,16 @@ See [Scope Definitions](scope-definitions.md), where you
can find all existing S
## Filter
-Use filter to build conditions for the value of fields by using field name and
expression.
+Use filter to build conditions for the value of fields by using field name and
expression.
-The filter expressions run as a chain, generally connected with `logic AND`.
-The OPs support `==`, `!=`, `>`, `<`, `>=`, `<=`, `in [...]` ,`like %...`,
`like ...%` , `like %...%` , `contain` and `not contain`, with type detection
based on field type. In the event of incompatibility, compile or code
generation errors may be triggered.
+The filter expressions run as a chain, generally connected with `logic AND`.
+Type detection is based on field type. In the event of incompatibility,
compile or code generation errors may be triggered.
+
+Supported operators:
+- Comparison: `==`, `!=`, `>`, `<`, `>=`, `<=`
+- Collection: `in [...]` (e.g., `name in ("Endpoint1", "Endpoint2")`)
+- String matching: `like %...`, `like ...%`, `like %...%` (e.g., `name like
"serv%"`)
+- Tag matching: `contain`, `not contain` (e.g., `tags contain
"http.method:GET"`)
Review Comment:
Trailing whitespace detected at the end of this line. Consider removing it
for consistency with coding standards.
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