Examples with TypeInfo org.apache.flink.api.common.typeinfo.TypeInfo used on opensource projects

Example 1 with TypeInfo

use of org.apache.flink.api.common.typeinfo.TypeInfo in project flink by apache.

the class TypeExtractor method getTypeInfoFactory.

// --------------------------------------------------------------------------------------------
//  Utility methods
// --------------------------------------------------------------------------------------------
/**
	 * Returns the type information factory for a type using the factory registry or annotations.
	 */
@Internal
public static <OUT> TypeInfoFactory<OUT> getTypeInfoFactory(Type t) {
    final Class<?> factoryClass;
    if (registeredTypeInfoFactories.containsKey(t)) {
        factoryClass = registeredTypeInfoFactories.get(t);
    } else {
        if (!isClassType(t) || !typeToClass(t).isAnnotationPresent(TypeInfo.class)) {
            return null;
        }
        final TypeInfo typeInfoAnnotation = typeToClass(t).getAnnotation(TypeInfo.class);
        factoryClass = typeInfoAnnotation.value();
        // check for valid factory class
        if (!TypeInfoFactory.class.isAssignableFrom(factoryClass)) {
            throw new InvalidTypesException("TypeInfo annotation does not specify a valid TypeInfoFactory.");
        }
    }
    // instantiate
    return (TypeInfoFactory<OUT>) InstantiationUtil.instantiate(factoryClass);
}