Java NestedNullException类代码示例

import org.apache.commons.beanutils.NestedNullException; //导入依赖的package包/类
@Override
public int compare(T o1, T o2) {
  Comparable obj1 = null;
  Comparable obj2 = null;

  try {
    obj1 = (Comparable) PropertyUtils.getProperty(o1, this.propertyPath);
    obj2 = (Comparable) PropertyUtils.getProperty(o2, this.propertyPath);
  } catch (NestedNullException ignored) {
    // Ignored, als het property NULL is, dan vergelijken met NULL
  } catch (IllegalAccessException | InvocationTargetException | NoSuchMethodException e) {
    throw new IllegalArgumentException("Could not retrieve property " + this.propertyPath, e);
  }

  Comparator<Comparable<Object>> objectComparator = null;
  if ((obj1 != null && obj2 != null) && obj1 instanceof String) {
    obj1 = ((String) obj1).toLowerCase().trim();
    obj2 = ((String) obj2).toLowerCase().trim();

    if (!StringUtils.isEmpty((String) obj1) && !StringUtils.isEmpty((String) obj2)) {
      if (StringUtils.isNumeric((String) obj1) && StringUtils.isNumeric((String) obj2)) {
        objectComparator = Comparator.comparingDouble(o -> new Double(String.valueOf(o)));
      }
    }
  }

  if (objectComparator == null) {
    objectComparator = Comparator.naturalOrder();
  }

  //noinspection unchecked
  return Comparator.nullsLast(objectComparator).compare(obj1, obj2);
}
 

import org.apache.commons.beanutils.NestedNullException; //导入依赖的package包/类
/**
 * Return whether or not an attribute is writeable. This method is aware that that Collections may be involved and
 * handles them
 * consistently with the way in which OJB handles specifying the attributes of elements of a Collection.
 *
 * @param object
 * @param property
 * @return
 * @throws IllegalArgumentException
 */
public static boolean isWriteable(Object object, String property,
        PersistenceStructureService persistenceStructureService) throws IllegalArgumentException {
    if (null == object || null == property) {
        throw new IllegalArgumentException("Cannot check writeable status with null arguments.");
    }

	// Try the easy way.
	try {
		if (!(PropertyUtils.isWriteable(object, property))) {
			// If that fails lets try to be a bit smarter, understanding that Collections may be involved.
			return isWriteableHelper(object, property, persistenceStructureService);
		} else {
			return true;
		}
	} catch (NestedNullException nestedNullException) {
		// If a NestedNullException is thrown then the property has a null
		// value.  Call the helper to find the class of the property and
		// get a newInstance of it.
		return isWriteableHelper(object, property, persistenceStructureService);
	}
}
 

import org.apache.commons.beanutils.NestedNullException; //导入依赖的package包/类
public static Object getNestedProperty(Object data, String name) {
    try {
        if (!name.contains(".")) {
            return PropertyUtils.getProperty(data, name);
        }
        if (name.contains("[")) {
            String[] names = name.split("\\.", 2);
            Object obj = null;
            try {
                obj = PropertyUtils.getIndexedProperty(data, names[0]);
            } catch (NullPointerException npe) {
                // アクセスする配列オブジェクトがnullの場合
                obj = null;
            }
            if (obj == null) {
                return null;
            }
            return getNestedProperty(obj, names[1]);
        }
        try {
            return PropertyUtils.getNestedProperty(data, name);
        } catch (NestedNullException nne) {
            // ネストしたプロパティの途中がnullの場合はエラーとせず
            // nullを返す
            return null;
        }
    } catch (Exception e) {
        throw new ApplicationFatalRuntimeException("invalid property : " + name, e);
    }
}
 

import org.apache.commons.beanutils.NestedNullException; //导入依赖的package包/类
private static boolean isPropertyReadable(Object bean, String name) {
    try {
        return PropertyUtils.isReadable(bean, name);
    } catch (NestedNullException e) {
        return false;
    }
}
 

import org.apache.commons.beanutils.NestedNullException; //导入依赖的package包/类
private static boolean isPropertyWritable(Object bean, String name) {
    try {
        return PropertyUtils.isWriteable(bean, name);
    } catch (NestedNullException e) {
        return false;
    }
}
 

import org.apache.commons.beanutils.NestedNullException; //导入依赖的package包/类
@Override
public Object getValue() {
    try {
        final int propIndex = propertyProvider.getNestedIndex(propertyName);
        if (propIndex >= 0 && propIndex < nestedProps.size())
            return nestedProps.get(propIndex);
        else
            return PropertyUtils.getNestedProperty(bean, propertyName);
    } catch (final NestedNullException ne) {
        return null;
    } catch (final Throwable e) {
        propagate(e);
    }
    return null;
}
 

import org.apache.commons.beanutils.NestedNullException; //导入依赖的package包/类
/**
 * Tries to get a property from map using the provided
 * key. If the Map contains the key, the associated property value
 * is obtained from the Map and returned. Otherwise, checks to see if
 * the Map contains a key matching the remainder of the keypath. If so,
 * the property value stored under the alternate key is returned.
 */
public Object getPropertyFromMap(Map map, String key, Keypath keypath) {
    String alternateKey = keypath.remainingKeypath();
    if (!(map.containsKey(key) || map.containsKey(alternateKey)))
        throw new NestedNullException("No property named " + key +
                " or " + alternateKey);
    if (map.containsKey(key))
        return map.get(key);

    if (map.containsKey(alternateKey))
        keypath.invalidate();
    return map.get(alternateKey);
}
 

import org.apache.commons.beanutils.NestedNullException; //导入依赖的package包/类
@Test
public void testPopulateBusinessObjectFromMap() {
    PojoPlugin.initBeanUtils();

    NestedBo nestedBo = new NestedBo();

    Map<String, Object> values = new HashMap<String, Object>();
    values.put("nestedImpl.value", "value");

    FieldUtils.populateBusinessObjectFromMap(nestedBo, values);

    assertNotNull(nestedBo.nested);

    nestedBo.nested = null;
    values.clear();
    values.put("nestedIntf.value", "value");

    try {
        FieldUtils.populateBusinessObjectFromMap(nestedBo, values);
        fail("Expected to throw NestedNullException due to attempt to instantiate interface");
    } catch (NestedNullException nne) {
        // expected
    }

    BOContainingPerson bo = new BOContainingPerson();
    values.clear();
    values.put("person.name", "value");
    FieldUtils.populateBusinessObjectFromMap(bo, values);

    assertNotNull(bo.getPerson());
    assertEquals("value", bo.getPerson().getName());
}
 

import org.apache.commons.beanutils.NestedNullException; //导入依赖的package包/类
public Collection getCollection() {
    throw new NestedNullException();
}
 

import org.apache.commons.beanutils.NestedNullException; //导入依赖的package包/类
@Test(dependsOnMethods="createComplex", groups = "searchComplex")
public void searchAttributesParam() throws Exception{

    int count=3;
    List<String> attrList=Arrays.asList("name.familyName", "active");
    logger.debug("Searching at most {} users using POST verb", count);
    logger.debug("Sorted by family name descending");
    logger.debug("Retrieving only the attributes {}", attrList);

    SearchRequest sr=new SearchRequest();
    sr.setFilter("name.familyName pr");
    sr.setSortBy("name.familyName");
    sr.setSortOrder("descending");
    //Generate a string with the attributes desired to be returned separated by comma
    sr.setAttributes(attrList.toString().replaceFirst("\\[","").replaceFirst("]",""));
    sr.setCount(count);

    Response response=client.searchUsersPost(sr);
    assertEquals(response.getStatus(), OK.getStatusCode());

    ListResponse listResponse=response.readEntity(ListResponse.class);
    if (listResponse.getResources().size()<count)
        logger.warn("Less than {} users satisfying the criteria. TESTER please check manually", count);
    else{
        //Obtain an array of results
        UserResource users[]=listResponse.getResources().stream().map(usrClass::cast)
                .collect(Collectors.toList()).toArray(new UserResource[]{});
        assertEquals(users.length, count);

        //Build a set of all attributes that should not appear in the response
        Set<String> check=new HashSet<>();
        check.addAll(IntrospectUtil.allAttrs.get(usrClass));

        //Remove from the ALL list, those requested plus its "parents"
        for (String attr : attrList){
            String part=attr;

            for (int i=part.length(); i>0; i = part.lastIndexOf(".")){
                part=part.substring(0, i);
                check.remove(part);
            }
        }
        //Remove those that are ALWAYS present (per spec)
        check.removeAll(IntrospectUtil.alwaysCoreAttrs.get(usrClass).keySet());

        //Confirm for every user, those attributes are not there
        for (UserResource user : users)
            for (String path : check){
                String val=null;
                try {
                    val=BeanUtils.getProperty(user, path);
                }
                catch (NestedNullException nne){
                    //Intentionally left empty
                }
                finally {
                    assertNull(val);
                }
            }

        for (int i=1;i<users.length;i++) {
            String familyName=users[i-1].getName().getFamilyName().toLowerCase();
            String familyName2=users[i].getName().getFamilyName().toLowerCase();

            //Check if first string is greater or equal than second
            assertFalse(familyName.compareTo(familyName2)<0);
        }
    }
}