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frank wang commented on FLINK-12031: ------------------------------------ [~twalthr] i can help to solve this problem, can you assign to me ? > the registerFactory method of TypeExtractor Should not be private > ------------------------------------------------------------------ > > Key: FLINK-12031 > URL: https://issues.apache.org/jira/browse/FLINK-12031 > Project: Flink > Issue Type: Bug > Components: API / Type Serialization System > Reporter: frank wang > Priority: Minor > > [https://github.com/apache/flink/blob/master/flink-core/src/main/java/org/apache/flink/api/java/typeutils/TypeExtractor.java] > {code:java} > /** > * Registers a type information factory globally for a certain type. Every > following type extraction > * operation will use the provided factory for this type. The factory will > have highest precedence > * for this type. In a hierarchy of types the registered factory has higher > precedence than annotations > * at the same level but lower precedence than factories defined down the > hierarchy. > * > * @param t type for which a new factory is registered > * @param factory type information factory that will produce {@link > TypeInformation} > */ > private static void registerFactory(Type t, Class<? extends TypeInfoFactory> > factory) { > Preconditions.checkNotNull(t, "Type parameter must not be null."); > Preconditions.checkNotNull(factory, "Factory parameter must not be null."); > if (!TypeInfoFactory.class.isAssignableFrom(factory)) { > throw new IllegalArgumentException("Class is not a TypeInfoFactory."); > } > if (registeredTypeInfoFactories.containsKey(t)) { > throw new InvalidTypesException("A TypeInfoFactory for type '" + t + "' > is already registered."); > } > registeredTypeInfoFactories.put(t, factory); > } > {code} > -- This message was sent by Atlassian Jira (v8.3.4#803005)