Finalize 方法

Raymondlam12023年10月22日小于 1 分钟

泛型写法

public interface InferRowCountFactory {

     <T> InferRowCount<T> forType(Class<T> type);
}

@Component
public class InferRowCountFactoryImpl implements InferRowCountFactory {

    private final Map<Class<?>, InferRowCount<?>> implementationMap;

    public InferRowCountFactoryImpl(
            InferRowCount4ETLOperator inferRowCount4ETLOperator,
            InferRowCount4OperatorBean inferRowCount4OperatorBean) {

        this.implementationMap = Map.of(
                ETLOperator.class, inferRowCount4ETLOperator,
                OperatorBean.class, inferRowCount4OperatorBean
        );
    }

    @SuppressWarnings("unchecked")
    @Override
    public <T> InferRowCount<T> forType(Class<T> type) {
        InferRowCount<?> implementation = implementationMap.get(type);
        if (implementation == null) {
            throw new UnsupportedOperationException("Unsupported infer row count for type: " + type.getName());
        }
        return (InferRowCount<T>) implementation;
    }
}