Annotation for ParameterConverter
---------------------------------
Key: JBEHAVE-258
URL: http://jira.codehaus.org/browse/JBEHAVE-258
Project: JBehave
Issue Type: Improvement
Reporter: Bruno Bieth
Simplifying adding ParameterConverter to Steps. Here's an example :
{code}
public class DateTimeConverter implements ParameterConverter {
@Override
public boolean accept(Type type) {
return type.equals( DateTime.class );
}
@Override
public Object convertValue(String value, Type type) {
return new DateTime( value );
}
}
{code}
{code}
@ParameterConverters(DateTimeConverter.class)
public class PersonSteps {
private Person person;
private DateTime currentDate;
// ... steps
}
{code}
The ParameterConverters annotation takes an array of TypeConverter :
{code}
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.TYPE)
public @interface ParameterConverters {
Class<? extends ParameterConverter>[] value();
}
{code}
Here is a steps factory :
{code}
public class ParameterConverterStepsFactory {
public CandidateSteps[] createCandidateSteps(Object... stepsInstances)
throws InstantiationException, IllegalAccessException {
CandidateSteps[] candidateSteps = new
CandidateSteps[stepsInstances.length];
for (int i = 0; i < stepsInstances.length; i++) {
Object stepsInstance = stepsInstances[i];
StepsConfiguration configuration;
ParameterConverters parameterConverters =
stepsInstance.getClass().getAnnotation(
ParameterConverters.class );
if( parameterConverters != null ) {
configuration = createConfiguration(
parameterConverters );
} else {
configuration = new StepsConfiguration();
}
candidateSteps[i] = new Steps(configuration, stepsInstance);
}
return candidateSteps;
}
private StepsConfiguration createConfiguration(
ParameterConverters annotation) throws
InstantiationException, IllegalAccessException {
ParameterConverter[] converters = new ParameterConverter[
annotation.value().length ];
for( int i = 0; i < converters.length; i ++ ) {
converters[ i ] = annotation.value()[ i ].newInstance();
}
org.jbehave.scenario.steps.ParameterConverters
converterAggregate =
new org.jbehave.scenario.steps.ParameterConverters(
converters );
return new StepsConfiguration( converterAggregate );
}
}
{code}
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