[UIMA-3928] createExternalResourceDescription() signatures shadowing each other

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.0uimaFIT
• Fix Version/s: 3.0.0uimaFIT
• Component/s: uimaFIT
• Assignee: Richard Eckart de Castilho
• Reporter: Richard Eckart de Castilho
• Created: 01/Jul/14 18:51
• Updated: 29/May/18 20:53
• Resolved: 29/May/18 20:53

Description

The method

ExternalResourceDescription createExternalResourceDescription(
  Class<? extends SharedResourceObject> aInterface, 
  String aUrl, 
  Object... aParams)

can be invoked if the user actually wanted to call the method

ExternalResourceDescription createExternalResourceDescription(
  Class<? extends Resource> aInterface, 
  Object... aParams)

E.g.

createExternalResourceDescription(
        MyResource,
        MyResource.PARAM_VALUE, 
        "myvalue"))

Java seems to be smart enough to invoke the correct method, but when calling this from Groovy, it fails:

Caught: java.lang.IllegalArgumentException: Parameter arguments have to come in key/value pairs, but found odd number of arguments [3]
java.lang.IllegalArgumentException: Parameter arguments have to come in key/value pairs, but found odd number of arguments [3]
	at org.apache.uima.fit.factory.ConfigurationParameterFactory.ensureParametersComeInPairs(ConfigurationParameterFactory.java:531)
	at org.apache.uima.fit.factory.ConfigurationParameterFactory.createConfigurationData(ConfigurationParameterFactory.java:374)
	at org.apache.uima.fit.factory.ExternalResourceFactory.createExternalResourceDescription(ExternalResourceFactory.java:277)
	at org.apache.uima.fit.factory.ExternalResourceFactory.createExternalResourceDescription(ExternalResourceFactory.java:213)

A workaround is currently to cast the first parameter name to Object:

createExternalResourceDescription(
        MyResource,
        (Object) MyResource.PARAM_VALUE, 
        "myvalue"))

Issue Links

• links to: GitHub Pull Request #3