Examples with Factory org.apache.flink.table.factories.Factory used on opensource projects

Example 1 with Factory

use of org.apache.flink.table.factories.Factory in project flink by apache.

the class FileSystemTableFactory method formatFactoryExists.

/**
 * Returns true if the format factory can be found using the given factory base class and
 * identifier.
 */
private boolean formatFactoryExists(Context context, Class<?> factoryClass) {
    Configuration options = Configuration.fromMap(context.getCatalogTable().getOptions());
    String identifier = options.get(FactoryUtil.FORMAT);
    if (identifier == null) {
        throw new ValidationException(String.format("Table options do not contain an option key '%s' for discovering a format.", FactoryUtil.FORMAT.key()));
    }
    final List<Factory> factories = new LinkedList<>();
    ServiceLoader.load(Factory.class, context.getClassLoader()).iterator().forEachRemaining(factories::add);
    final List<Factory> foundFactories = factories.stream().filter(f -> factoryClass.isAssignableFrom(f.getClass())).collect(Collectors.toList());
    final List<Factory> matchingFactories = foundFactories.stream().filter(f -> f.factoryIdentifier().equals(identifier)).collect(Collectors.toList());
    return !matchingFactories.isEmpty();
}