Getting error trying to apply operators to uuid

[João Rodrigues]

I am trying to apply operations to an uuid field
i implemented the beans indicated in the project but i cant pull it off kinda suck here

allways getting this error

‌

‌

{
    "timestamp": "2019-10-24T11:45:29.309+0000",
    "status": 500,
    "error": "Internal Server Error",
    "message": "CacheLoader returned null for key funcionario.uuid.",
    "trace": "com.google.common.cache.CacheLoader$InvalidCacheLoadException: CacheLoader returned null for key funcionario.uuid.\n\tat com.google.common.cache.LocalCache$Segment.getAndRecordStats(LocalCache.java:2315)\n\tat com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2279)\n\tat com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2155)\n\tat com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2045)\n\tat com.google.common.cache.LocalCache.get(LocalCache.java:3953)\n\tat com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:3976)\n\tat com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:4960)\n\tat com.google.common.cache.LocalCache$LocalLoadingCache.getUnchecked(LocalCache.java:4966)\n\tat org.bitbucket.gt_tech.spring.data.querydsl.value.operators.ExpressionProviderFactory.getPredicate(ExpressionProviderFactory.java:89)\n\tat pt.airc.fun.dao.FuncionarioRepository.lambda$customize$0(FuncionarioRepository.java:28)\n\tat 

I have this stuff implemented

‌

public interface FuncionarioRepository extends PagingAndSortingRepository<Funcionario, Long>, QuerydslPredicateExecutor<QFuncionario>, QuerydslBinderCustomizer<QFuncionario> {
    @Override
    default public void customize(QuerydslBindings bindings, QFuncionario root) {

        bindings.bind(root.uuid)
                .all((path , values) -> ExpressionProviderFactory.getPredicate(path, values));
    }
}

‌

@Configuration
public class QueryDslValueOperatorsConfig {

    @Bean
    public FilterRegistrationBean querydslHttpRequestContextAwareServletFilter() {
        FilterRegistrationBean bean = new FilterRegistrationBean();
        bean.setFilter(new QuerydslHttpRequestContextAwareServletFilter(
                querydslHttpRequestContextAwareServletFilterMappings()));
        bean.setAsyncSupported(false);
        bean.setEnabled(true);
        bean.setName("querydslHttpRequestContextAwareServletFilter");
        bean.setUrlPatterns(Arrays.asList(new String[] { "/funcionario*" }));
        bean.setOrder(Ordered.LOWEST_PRECEDENCE);
        return bean;
    }

    private Map<String, Class<?>> querydslHttpRequestContextAwareServletFilterMappings() {
        Map<String, Class<?>> mappings = new HashMap<>();
        mappings.put("/funcionario", Funcionario.class);
        return mappings;
    }

    /**
     * Note the use of delegate ConversionService which comes handy for types like
     * java.util.Date for handling powerful searches natively with Spring data.
     * @param factory QuerydslBindingsFactory instance
     * @param conversionServiceDelegate delegate ConversionService
     * @return
     */
    @Bean
    public QuerydslPredicateArgumentResolverBeanPostProcessor querydslPredicateArgumentResolverBeanPostProcessor(
            QuerydslBindingsFactory factory) {
        return new QuerydslPredicateArgumentResolverBeanPostProcessor(factory);
    }
}

Maybe i lacking some uuid convert implementation or smth

[GT Tech]

You would need to register a string to uuid converter with spring conversion service

[João Rodrigues]

can you give an hint on how to do it? i am having some problems creating the bean

‌

@Bean
    public ConversionService getConversionService() {
        ConversionServiceFactoryBean bean = new ConversionServiceFactoryBean();
        HashSet arrayList = new HashSet();
        arrayList.add(new sdfras());
        bean.setConverters(arrayList); //add converters
        bean.afterPropertiesSet();
        return bean.getObject();
    }

‌

public class sdfras extends DefaultConversionService implements Converter<String, UUID> {
    @Override
    public UUID convert(String source) {
        System.out.println("WARN123" + source);
        return UUID.fromString(source);
    }
}

Do you think i have smth wrong?

[GT Tech]

conversion service appears to be correct though there are other ways to use it. Did you get past the issue? Spring conversion is a bit delayed with advanced features of this library while its eagerly processed without advanced features. Were you able to put a break point in your default converter to confirm that it does get invoked? this would be a good data point to know that is the issue in library or else with the way its configured to get used? If you can share a small sample, I can take it further.

[Andre Luis]

João Rodrigues I’m getting the same error, but for Date Types… Did you solve this?

[Gianluca Sabato]

I have the same problem for UUID fields. I have to exclude them while customizing the bindings. Can you fix it? I really love your lib.