com.cedarsoftware.util

Class ReflectionUtils

java.lang.Object

com.cedarsoftware.util.ReflectionUtils

public class ReflectionUtils
extends Object

Author:

John DeRegnaucourt ([email protected])
Copyright (c) John DeRegnaucourt

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Constructor Summary

Constructors

Constructor and Description
ReflectionUtils()

Method Summary

Methods

Modifier and Type	Method and Description
static Map<String,Field>	getDeepDeclaredFieldMap(Class c) Return all Fields from a class (including inherited), mapped by String field name to java.lang.reflect.Field.
static Collection<Field>	getDeepDeclaredFields(Class c) Get all non static, non transient, fields of the passed in class, including private fields.
static Annotation	getMethodAnnotation(Method method, Class annoClass) Get a Mehod annotation, even if the method is on an object behind a JDK proxy, CGLib proxy, Javassist proxy, etc.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ReflectionUtils

public ReflectionUtils()

Method Detail

getMethodAnnotation

public static Annotation getMethodAnnotation(Method method,
                             Class annoClass)

Get a Mehod annotation, even if the method is on an object behind a JDK proxy, CGLib proxy, Javassist proxy, etc. First the method is directly inspected for the annotation, and if not found there, the interfaces are inspected for the class containing the method, which are then checked for the annotation.

Parameters:

method - Method to check for annotation

annoClass - Annotation class

Returns:

Annotation if found, null otherwise.

getDeepDeclaredFields

public static Collection<Field> getDeepDeclaredFields(Class c)

Get all non static, non transient, fields of the passed in class, including private fields. Note, the special this$ field is also not returned. The result is cached in a static ConcurrentHashMap to benefit execution performance.

Parameters:

c - Class instance

Returns:

Collection of only the fields in the passed in class that would need further processing (reference fields). This makes field traversal on a class faster as it does not need to continually process known fields like primitives.

getDeepDeclaredFieldMap

public static Map<String,Field> getDeepDeclaredFieldMap(Class c)

Return all Fields from a class (including inherited), mapped by String field name to java.lang.reflect.Field.

Parameters:

c - Class whose fields are being fetched.

Returns:

Map of all fields on the Class, keyed by String field name to java.lang.reflect.Field.