Drools 5.5.0 Indenting the "template header" or "rule" keywords in a template file will cause exceptions on expansion. I believe it might be related to this old JIRA issue: https://issues.jboss.org/browse/JBRULES-2786 "DecisionTableParseException" and "NullPointerException" are thrown. See example code and related stack traces below. Is this a bug in drools or is the template formatting intended to be this strict? Or am I doing something else wrong? ===================== Indented template header: " template header age type log" Gives the exception: org.drools.template.parser.DecisionTableParseException: Missing header at org.drools.template.parser.DefaultTemplateContainer.parseTemplate(DefaultTemplateContainer.java:87) at org.drools.template.parser.DefaultTemplateContainer.<init>(DefaultTemplateContainer.java:47) at org.drools.decisiontable.ExternalSpreadsheetCompiler.compile(ExternalSpreadsheetCompiler.java:97) ===================== Indented rule keyword: " rule "Cheese fans_(a){row.rowNumber}&quot; when Person(age == @{age})" Gives the exception: java.lang.NullPointerException at org.drools.template.parser.DefaultTemplateColumn.createCellCondition(DefaultTemplateColumn.java:67) at org.drools.template.parser.DefaultTemplateColumn.addCondition(DefaultTemplateColumn.java:90) at org.drools.template.parser.DefaultTemplateRuleBase.createColumnConditions(DefaultTemplateRuleBase.java:103) at org.drools.template.parser.DefaultTemplateRuleBase.createTemplateRule(DefaultTemplateRuleBase.java:96) at org.drools.template.parser.DefaultTemplateRuleBase.getDTRules(DefaultTemplateRuleBase.java:83) at org.drools.template.parser.DefaultTemplateRuleBase.<init>(DefaultTemplateRuleBase.java:62) at org.drools.template.parser.TemplateDataListener.<init>(TemplateDataListener.java:74) at org.drools.decisiontable.ExternalSpreadsheetCompiler.compile(ExternalSpreadsheetCompiler.java:99) -- View this message in context: http://drools.46999.n3.nabble.com/Why-are-indented-keywords-in-template-c... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users