frank wang created FLINK-12031:
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Summary: 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
Reporter: frank wang
https://github.com/apache/flink/blob/master/flink-core/src/main/java/org/apache/flink/api/java/typeutils/TypeExtractor.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);
}
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