Package org.fugerit.java.core.lang.helpers.reflect

Class PathHelper

java.lang.Object

org.fugerit.java.core.lang.helpers.reflect.PathHelper

public class PathHelper
extends Object

Simple class to look up a property path in a java object

Author:

Matteo a.k.a. fugerit

Field Summary

Fields

Modifier and Type	Field	Description
static boolean	CONTINUE_ON_NULL	Constant for continuing on empty path value
static boolean	EXIT_ON_NULL	Constant for stopping on empty path value

Method Summary

Modifier and Type	Method	Description
static boolean	bind(String path, Object target, Object value)	Bind a value to a path in an object
static boolean	bind(String path, Object target, Object value, Class<?> paramType, boolean tryInit)	Bind a value to a path in an object.
static boolean	bind(String path, Object target, Object value, Class<?> paramType, boolean tryInit, FacadeImplFinder facadeImplFinder)	Bind a value to a path in an object.
static Object	bindInit(String path, Object target)	Init a path in an object using initEmptyField() on any property in the path.
static Object	initEmptyField(String property, Object target)
static Object	initEmptyField(String property, Object target, FacadeImplFinder facadeImplFinder)	Init a property on object if empty
static Object	lookup(String path, Object target)	Lookup for a value by getter methods ( return null when a null is encountered ) If a method in path method is not found will raise exception
static Object	lookup(String path, Object target, boolean continueOnNull)	Lookup for a value by getter methods
static Object	lookupContinueOnNull(String path, Object target)	Lookup for a value by getter methods ( will continue on null value and eventually raise an exception) If a method in path method is not found will raise exception If a method in path return null will stop and return null
static Object	lookupMethod(String path, Object target)	Lookup for a value by full method value (no get prefix is assumed) If a method in path method is not found will raise exception If a method in path return null will stop and return null
static Object	lookupMethod(String path, Object target, boolean continueOnNull)	Lookup for a value by full method value (no get prefix is assumed) If a method in path method is not found will raise exception

Methods inherited from class java.lang.Object

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

Field Detail

CONTINUE_ON_NULL

public static final boolean CONTINUE_ON_NULL

Constant for continuing on empty path value

See Also:

Constant Field Values

EXIT_ON_NULL

public static final boolean EXIT_ON_NULL

Constant for stopping on empty path value

See Also:

Constant Field Values

Method Detail

initEmptyField

public static Object initEmptyField(String property,
                                    Object target)

initEmptyField

public static Object initEmptyField(String property,
                                    Object target,
                                    FacadeImplFinder facadeImplFinder)

Init a property on object if empty

Parameters:

property - the property to init

target - the target object

facadeImplFinder - facade for finding target property type

Returns:

the object used to initialized the empty field

Throws:

ConfigRuntimeException - may throw ConfigRuntimeException see SafeFunction

bindInit

public static Object bindInit(String path,
                              Object target)

Init a path in an object using initEmptyField() on any property in the path.

Parameters:

path - the path in the object

target - the target object

Returns:

the last created object

bind

public static boolean bind(String path,
                           Object target,
                           Object value,
                           Class<?> paramType,
                           boolean tryInit)

Bind a value to a path in an object.

Parameters:

path - the path

target - the target object

value - the value to set

paramType - the property class type

tryInit - if true will try to init any null object in path

Returns:

if the binding is successful

bind

public static boolean bind(String path,
                           Object target,
                           Object value,
                           Class<?> paramType,
                           boolean tryInit,
                           FacadeImplFinder facadeImplFinder)

Bind a value to a path in an object.

Parameters:

path - the path

target - the target object

value - the value to set

paramType - the property class type

tryInit - if true will try to init any null object in path

facadeImplFinder - facade for finding implementing class

Returns:

if the binding is successful

bind

public static boolean bind(String path,
                           Object target,
                           Object value)

Bind a value to a path in an object

Parameters:

path - the path

target - the target object

value - the value to set

Returns:

if the binding is successful

lookupMethod

public static Object lookupMethod(String path,
                                  Object target,
                                  boolean continueOnNull)

Lookup for a value by full method value (no get prefix is assumed) If a method in path method is not found will raise exception

Parameters:

path - the path in the object (ex. prop1.prop2)

target - the target object

continueOnNull - true to continue on null value and eventually raise an exception, false to return null when a null is encountered

Returns:

the value found in the path

lookupMethod

public static Object lookupMethod(String path,
                                  Object target)

Lookup for a value by full method value (no get prefix is assumed) If a method in path method is not found will raise exception If a method in path return null will stop and return null

Parameters:

path - the path in the object (ex. prop1.prop2)

target - the target object

Returns:

the value found in the path

lookup

public static Object lookup(String path,
                            Object target,
                            boolean continueOnNull)

Lookup for a value by getter methods

Parameters:

path - the path in the object (ex. prop1.prop2)

target - the target object

continueOnNull - true to continue on null value and eventually raise an exception, false to return null when a null is encountered

Returns:

the value found in the path

lookup

public static Object lookup(String path,
                            Object target)

Lookup for a value by getter methods ( return null when a null is encountered ) If a method in path method is not found will raise exception

Parameters:

path - the path in the object (ex. prop1.prop2)

target - the target object

Returns:

the value found in the path

lookupContinueOnNull

public static Object lookupContinueOnNull(String path,
                                          Object target)

Lookup for a value by getter methods ( will continue on null value and eventually raise an exception) If a method in path method is not found will raise exception If a method in path return null will stop and return null

Parameters:

path - the path in the object (ex. prop1.prop2)

target - the target object

Returns:

the value found in the path