org.rhq.core.pluginapi.util

Class ObjectUtil

java.lang.Object

org.rhq.core.pluginapi.util.ObjectUtil

public class ObjectUtil
extends Object

Author:

Greg Hinkle

Method Summary

Methods

Modifier and Type	Method and Description
static Object	lookupAttributeProperty(Object obj, String propertyName) Returns the value of the property with the specified name for the given Object, or null if the Object has no such property.
static Object	lookupDeepAttributeProperty(Object value, String propertyPath) Looks up deep object graph attributes using a dot delimited java bean spec style path.
static Double	lookupDeepNumericAttributeProperty(Object value, String propertyPath) Reads a numeric value from a deep object graph as per ObjectUtil.lookupDeepAttributeProperty()

Methods inherited from class java.lang.Object

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

Method Detail

lookupAttributeProperty

@Nullable
public static Object lookupAttributeProperty(Object obj,
                                      String propertyName)

Returns the value of the property with the specified name for the given Object, or null if the Object has no such property.

Parameters:

obj - an Object

propertyName - the name of the property whose value should be returned

Returns:

the value of the property with the specified name for the given Object, or null if the Object has no such property

lookupDeepNumericAttributeProperty

public static Double lookupDeepNumericAttributeProperty(Object value,
                                        String propertyPath)

Reads a numeric value from a deep object graph as per ObjectUtil.lookupDeepAttributeProperty()

Parameters:

value - The object to look into

propertyPath - the property path to search

Returns:

the double value read from the object's property path or Double.NaN if it can't be read

lookupDeepAttributeProperty

public static Object lookupDeepAttributeProperty(Object value,
                                 String propertyPath)

Looks up deep object graph attributes using a dot delimited java bean spec style path. So if I have an object A with a Member object B with a String value C I can refer to it as "b.c" and pass in the object A and I'll get back the value of a.getB().getC()

Parameters:

value - The object to look into

propertyPath - the property path to search

Returns:

the value read from the object's property path