[UIMA-5096] ExternalResourceFactory.createExternalResourceDescription does not accept non-string parameters

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.2.0uimaFIT
• Component/s: uimaFIT

Environment

Java

• Assignee: Unassigned
• Reporter: Asher Stern
• Created: 01/Sep/16 10:19
• Updated: 24/Mar/21 16:38

Description

In

org.apache.uima.fit.factory.ExternalResourceFactory 

the method

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

does not accept non-string parameters.

Example:
The following works:
Caller:

ExternalResourceDescription geographicalResourceDescription = ExternalResourceFactory.createExternalResourceDescription(
					GeographicalResourceImplementation.class,
GeographicalResource.MAX_LENGTH_PARAMETER, String.valueOf(5),
);

Resource:

@ConfigurationParameter(name = MAX_LENGTH_PARAMETER)
private String maxLengthString;

The following fails:
Caller:

ExternalResourceDescription geographicalResourceDescription = ExternalResourceFactory.createExternalResourceDescription(
					GeographicalResourceImplementation.class,
GeographicalResource.MAX_LENGTH_PARAMETER, 5,
);

Resource:

@ConfigurationParameter(name = MAX_LENGTH_PARAMETER)
private int maxLength;

The exception is:

java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.String
	at org.apache.uima.fit.factory.ExternalResourceFactory.createExternalResourceDescription(ExternalResourceFactory.java:177)
	at org.apache.uima.fit.factory.ExternalResourceFactory.createExternalResourceDescription(ExternalResourceFactory.java:122)
	...

Issue Links

• relates to: UIMA-4571 ConfigurationParameterFactory.setParameter() should attempt type coercion