How to resolve properties that do not exist to null

Old Forum Archive
1

Say I have a property that is optional and I want to resolve it to null if it does not exist

// Alternative 1: Using project.ext.properties
def resolved = project.ext.properties.somePropertyName
    // Alternative 2: if-checking
def resolved = null
if (hasProperty('somePropertyName') {
   resolved = project.ext.somePropertyName
}

Is alternative 1 a viable option in this case?

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2

In most cases, yes. In fact, alternative 2 is not strictly correct either. The ‘Project.hasProperty()’ method will return true for many other values other than those available from the ‘ExtraPropertiesExtension’. See here for more information.

If the property you are interested in is a “user” property. Which means it is in a gradle.properties file, passed via the command line, or set as an “extra” property, then yes, alternative 1 will work fine.

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