Examples with LookupDescriptorProvider de.metas.ui.web.window.descriptor.LookupDescriptorProvider used on opensource projects

Example 6 with LookupDescriptorProvider

use of de.metas.ui.web.window.descriptor.LookupDescriptorProvider in project metasfresh-webui-api by metasfresh.

the class WebuiProcessClassInfo method createParamLookupValuesProvider.

// 
// 
// ----
// 
// 
/**
 * @return parameterName and provider
 */
private static Map.Entry<String, LookupDescriptorProvider> createParamLookupValuesProvider(final Method method) {
    final ProcessParamLookupValuesProvider ann = method.getAnnotation(ProcessParamLookupValuesProvider.class);
    if (!LookupValuesList.class.isAssignableFrom(method.getReturnType())) {
        throw new AdempiereException("Method's return type shall be " + LookupValuesList.class + ": " + method);
    }
    final ImmutableList<Function<LookupDataSourceContext, Object>> parameterValueProviders = Stream.of(method.getParameterTypes()).map(parameterType -> {
        final Function<LookupDataSourceContext, Object> parameterValueProvider;
        if (LookupDataSourceContext.class.isAssignableFrom(parameterType)) {
            parameterValueProvider = evalCtx -> evalCtx;
        } else {
            throw new AdempiereException("Parameter " + parameterType + " not supported for " + method);
        }
        return parameterValueProvider;
    }).collect(ImmutableList.toImmutableList());
    // FIXME: holding a hard reference to method may introduce ClassLoader memory leaks
    final Method methodToInvoke = method;
    final LookupDescriptor lookupDescriptor = ListLookupDescriptor.builder().setLookupTableName(ann.lookupTableName()).setDependsOnFieldNames(ann.dependsOn()).setLookupSourceType(ann.lookupSource()).setLookupValues(ann.numericKey(), evalCtx -> retriveLookupValues(methodToInvoke, parameterValueProviders, evalCtx)).build();
    final LookupDescriptorProvider lookupDescriptorProvider = LookupDescriptorProvider.singleton(lookupDescriptor);
    return GuavaCollectors.entry(ann.parameterName(), lookupDescriptorProvider);
}