com.fasterxml.jackson.contrib.jsonpath.util

Class ReflectionUtil

java.lang.Object

com.fasterxml.jackson.contrib.jsonpath.util.ReflectionUtil

public class ReflectionUtil
extends Object

This class provides set of reflection call methods for the result pojo.

Constructor Summary

Constructors

Constructor and Description
ReflectionUtil()

Method Summary

Methods

Modifier and Type	Method and Description
Class<?>[]	geClassArgumentsFromGeneric(Type genericType) Gets all type arguments out of a generic.
Object	getFieldValue(Object resultObject, Field field) Gets the value from a specific field in the passed object.
boolean	isFieldArrayOrList(Field field) Checks if the field is an array or list.
boolean	isFieldPrimitive(Field field) Checks if field is primitive.
<T> Iterable<Field>	retrieveAllFields(Class<T> clazz) Given a class, return all fields in the entire class hierarchy.
<T> void	setField(T resultObject, Field field, Object value) Set a value into the passed field.
boolean	shouldConstituentMembersBeUnmarshalled(Class<?> clazz) Checks if given class should have its constituent members unmarshalled.

Methods inherited from class java.lang.Object

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

Constructor Detail

ReflectionUtil

public ReflectionUtil()

Method Detail

isFieldPrimitive

public boolean isFieldPrimitive(Field field)

Checks if field is primitive.

Parameters:

field - the field to check

Returns:

true if field is primitive

isFieldArrayOrList

public boolean isFieldArrayOrList(Field field)

Checks if the field is an array or list.

Parameters:

field - the field to check.

Returns:

true if the field is an array or list.

geClassArgumentsFromGeneric

public Class<?>[] geClassArgumentsFromGeneric(Type genericType)

Gets all type arguments out of a generic.

For example, it will retrieve String from Map<String, Object>

Parameters:

genericType - the generic type to insect.

Returns:

the array of generic types

setField

public <T> void setField(T resultObject,
                Field field,
                Object value)
              throws IllegalAccessException

Set a value into the passed field.

Type Parameters:

T - the type of the result object.

Parameters:

resultObject - the object in which to set the field.

field - the field to set.

value - the value to set.

Throws:

IllegalAccessException - if field cannot be set.

getFieldValue

public Object getFieldValue(Object resultObject,
                   Field field)
                     throws IllegalAccessException

Gets the value from a specific field in the passed object.

Parameters:

resultObject - the object to search.

field - the field to get from.

Returns:

the value of the field.

Throws:

IllegalAccessException - if field cannot be accessed.

retrieveAllFields

public <T> Iterable<Field> retrieveAllFields(Class<T> clazz)

Given a class, return all fields in the entire class hierarchy.

Type Parameters:

T - the Class type

Parameters:

clazz - the class to search.

Returns:

all fields in that class hierarchy

shouldConstituentMembersBeUnmarshalled

public boolean shouldConstituentMembersBeUnmarshalled(Class<?> clazz)

Checks if given class should have its constituent members unmarshalled. by checking following conditions: 1. class can't be primitive. 2. class can't be interface and can't come from java.lang pkg, java.util (eliminates recursive calls in classes like String, Integer, Long..). 3. if class is array, can't be array of primitives. 4. class can't be a map

Parameters:

clazz - a class to check.

Returns:

true if class can be used for unmarshalling