componentId of ServiceRelation can't be used in OAL

[807801002]

Which field can be used at filter()？I thought all fields in org.apache.skywalking.oap.server.core.source.ServiceRelation can be used to the filter expression for "from(ServiceRelation.*)".But the "componentId == 7" is error. which is a field at ServiceRelation.

[wu-sheng]

I think the key is from grammar tree, I can't see equalMatch in the expression

skywalking/oap-server/oal-grammar/src/main/antlr4/org/apache/skywalking/oal/rt/grammar/OALParser.g4

Lines 95 to 96 in 8bd6520

	expression
	: booleanMatch | stringMatch | greaterMatch | lessMatch | greaterEqualMatch | lessEqualMatch | notEqualMatch | booleanNotEqualMatch | likeMatch | inMatch | containMatch | notContainMatch

[wu-sheng]

Issue #7521 created for tracking this.

[wu-sheng]

PR #7636 has been raised to fix this.