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Allow rule with no trigger in DSL Rule file format #5462

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Merged
mherwege merged 5 commits into from
May 13, 2026
Merged

Allow rule with no trigger in DSL Rule file format #5462

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bc926e0
[DSL Rule] Allow rule with no trigger in DSL file format
lolodomo Mar 30, 2026
9912517
Copilot review comment: call getByytes with StandardCharsets.UTF_8 as…
lolodomo Mar 30, 2026
d0d1c41
Merge branch 'main' into dsl_rule_no_trigger
lolodomo May 10, 2026
b262947
Fix order of lines in itests after resolving conflict
lolodomo May 10, 2026
d2d3b3b
Make triggers optional including the "when" key
lolodomo May 10, 2026
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2 changes: 1 addition & 1 deletion bundles/org.openhab.core.model.rule/src/org/openhab/core/model/rule/Rules.xtext
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Original file line number Diff line number Diff line change
Expand Up @@ -13,7 +13,7 @@ VariableDeclaration:

Rule:
'rule' name=(STRING|ID) ('[' tags+=(ID|STRING) (',' tags+=(ID|STRING))* ']')?
'when' eventtrigger+=EventTrigger ('or' eventtrigger+=EventTrigger)*
'when' (eventtrigger+=EventTrigger ('or' eventtrigger+=EventTrigger)*)?
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'then' script=XExpressionInClosure
'end'
;
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32 changes: 32 additions & 0 deletions ...del.rule.tests/src/main/java/org/openhab/core/model/rule/runtime/DSLRuleProviderTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -122,7 +122,9 @@ public void testSimpleRules() {
assertThat(firstRule.getTags(), hasSize(2));
assertThat(firstRule.getTags(), hasItem("Test"));
assertThat(firstRule.getTags(), hasItem("my test"));
assertThat(firstRule.getTriggers(), hasSize(1));
assertThat(firstRule.getTriggers().getFirst().getTypeUID(), is(SystemTriggerHandler.STARTLEVEL_MODULE_TYPE_ID));
assertThat(firstRule.getActions(), hasSize(1));
assertThat(firstRule.getActions().getFirst().getTypeUID(), is(ScriptActionHandler.TYPE_ID));
assertThat(firstRule.getActions().getFirst().getConfiguration()
.get(AbstractScriptModuleHandler.CONFIG_SCRIPT_TYPE), is(DSLScriptEngine.MIMETYPE_OPENHAB_DSL_RULE));
Expand All @@ -132,14 +134,44 @@ public void testSimpleRules() {
assertThat(secondRule.getUID(), is("dslruletest-2"));
assertThat(secondRule.getName(), is("Rule Number Two"));
assertThat(secondRule.getTags(), hasSize(0));
assertThat(secondRule.getTriggers(), hasSize(1));
assertThat(secondRule.getTriggers().getFirst().getTypeUID(), is(ItemStateTriggerHandler.CHANGE_MODULE_TYPE_ID));
assertThat(secondRule.getTriggers().getFirst().getConfiguration().get(ItemStateTriggerHandler.CFG_ITEMNAME),
is("X"));
assertThat(secondRule.getActions(), hasSize(1));
assertThat(secondRule.getActions().getFirst().getTypeUID(), is(ScriptActionHandler.TYPE_ID));
assertThat(secondRule.getActions().getFirst().getConfiguration()
.get(AbstractScriptModuleHandler.CONFIG_SCRIPT_TYPE), is(DSLScriptEngine.MIMETYPE_OPENHAB_DSL_RULE));
}

@Test
public void testNoTrigger() {
Collection<Rule> rules = dslRuleProvider.getAll();
assertThat(rules.size(), is(0));

String model = "rule RuleNoTrigger\n" + //
"when\n" + //
"then\n" + //
" logInfo('Test', 'Test')\n" + //
"end\n\n";

modelRepository.addOrRefreshModel(TESTMODEL_NAME, new ByteArrayInputStream(model.getBytes()));
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Collection<Rule> actualRules = dslRuleProvider.getAll();

assertThat(actualRules.size(), is(1));

Rule rule = actualRules.iterator().next();

assertThat(rule.getUID(), is("dslruletest-1"));
assertThat(rule.getName(), is("RuleNoTrigger"));
assertThat(rule.getTags(), hasSize(0));
assertThat(rule.getTriggers(), hasSize(0));
assertThat(rule.getActions(), hasSize(1));
assertThat(rule.getActions().getFirst().getTypeUID(), is(ScriptActionHandler.TYPE_ID));
assertThat(rule.getActions().getFirst().getConfiguration().get(AbstractScriptModuleHandler.CONFIG_SCRIPT_TYPE),
is(DSLScriptEngine.MIMETYPE_OPENHAB_DSL_RULE));
}

@Test
public void testAllTriggers() {
Collection<Rule> rules = dslRuleProvider.getAll();
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