{"type":"doc","content":[{"type":"paragraph","content":[{"text":"When you access a field of an issue, ","type":"text","marks":[{"type":"textColor","attrs":{"color":"#333333"}}]},{"text":"you might need to verify that it is not","type":"text","marks":[{"type":"textColor","attrs":{"color":"#222222"}}]},{"text":" ","type":"text","marks":[{"type":"textColor","attrs":{"color":"#222222"}}]},{"text":"null","type":"text","marks":[{"type":"code"}]},{"text":" before calling a method on the value of that field to avoid null pointer exceptions. ","type":"text","marks":[{"type":"textColor","attrs":{"color":"#222222"}}]},{"text":"This article explains some approaches to protecting your Groovy formulas written in the JMCF Groovy editor against null values. ","type":"text"}]},{"type":"heading","attrs":{"level":2},"content":[{"text":"Approaches","type":"text"}]},{"type":"orderedList","attrs":{"order":1},"content":[{"type":"listItem","content":[{"type":"extension","attrs":{"extensionType":"com.atlassian.confluence.migration","extensionKey":"legacy-content","text":"","parameters":{"cxhtml":"Avoid exceptions using the if structure

You can explicitly check for null using the if control structure and then call a method on the field value. For example:

groovytrue

You can simplify your script using the Safe navigation operator ?. and avoid null pointer exceptions. For example:

groovytrue

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Protect Groovy formulas against null values

Approaches

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