A proxy class is a class functioning as an interface to another class or a service. Proxy classes are implementation of Proxy design pattern. These classes help using large objects or other resources that are expensive or impossible to duplicate.
Questions tagged [proxy-classes]
342 questions
13
votes
1 answer
creating Java Proxy instance for a class type?
I have the following code that works for creating a Proxy instance for an interface type backed by an InvocationHandler implementation, however when I use a concrete class type it doesn't work and this is well known and documented in…
SkyWalker
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12
votes
3 answers
How to unwrap the original object from a dynamic proxy
what's the best approach to unwrap a dynamic proxy to retrieve the original object beneath?
The dynamic proxy has been created using java.lang.reflect.Proxy.newProxyInstance()
Thank you.
MRalwasser
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12
votes
2 answers
Why won't DynamicProxy's interceptor get called for *each* virtual method call?
An example explains it best :
public interface IA {
void foo();
void bar();
}
public class A : IA {
public virtual void foo(){
Console.Write("foo");
bar(); //call virtual method
}
public virtual void bar(){
…
Cristian Diaconescu
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12
votes
2 answers
Could multiple proxy classes make up a STL-proof bitvector?
It's well known that std::vector does not satisfy the Standard's container requirements, mainly because the packed representation prevents T* x = &v[i] from returning a pointer to a bool.
My question is: can this be remedied/mitigated when…
TemplateRex
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11
votes
1 answer
Error when using AutoMapper to map from a POCO to an NHibernate proxy object
We recently upgraded AutoMapper and ran into an issue when mapping items a certain way.
When I load an NHibernate domain object, and attempt to map my model to it in the following manner:
var myPoco = new MyPoco();
var proxy =…
Erik
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10
votes
3 answers
Passing temporaries as non-const references in C++
I have the following piece of code, as an example dec_proxy attempts to reverse the effects of the increment operator upon the type that is executed in a complex function call foo - which btw I cannot change the interface of.
#include…
Xander Tulip
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10
votes
5 answers
Java/JSF/Tomcat/Spring - Proxy-Object has different methods than original object
today I ran into this problem which really bugs me, as almost the code already worked (and stopped working even after reverting to the older version).
I'm accessing a Spring-Bean on a Facelets-Page. Spring wraps these objects in Proxies to use…
Robert M.
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10
votes
3 answers
WCF generated proxy throws InvalidOperationException due to multiple types with same name in WSDL
I'm using Visual Studio 2013 to generate a WCF service proxy from this WSDL file. However, as soon as I try to call the setSalesItemsV3 method, WCF throws an InvalidOperationException from deep in System.Xml.dll.
This sample project demonstrates the…
Stephen Jennings
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9
votes
2 answers
How to Proxy a Promise in JavaScript es6
I'm trying to Proxy a Promise in native Firefox (and using Babel).
var prom = new Promise(function(resolve, reject){resolve(42)});
var promProxy = new Proxy(prom, {});
promProxy.then(function(response){console.log(response)});
This doesn't…
sam
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9
votes
2 answers
UndeclaredThrowableException thrown by IndexOutOfBoundsException
I am using the decorator pattern for a List.Part of this decoration entails using a proxy.
When I call get(index) with an index that is out of bounds, it throws an IndexOutOfBounds exception, which is then caught by the proxy, and…
Nathan Merrill
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9
votes
1 answer
NHibernate Get objects without proxy
I am using NHibernate(2.0.1.4) with NHibernate.Linq(1.0.0.4) to get Objects of the type Node from the Database.
When I get these objects, the last object of the collection I got is of the type Proxy (because I used "NHibernate.ByteCode.LinFu"" )
I…
Jan
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9
votes
1 answer
How do I make a class, which I can't change, implement an interface?
I have a class from another library that is closed-source, but I want to be able to use an interface for it. The reason being that I don't want to do instanceof checks or null-checks everywhere, but I also don't want to extend the existing…
Brian
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8
votes
1 answer
Doctrine 2 proxy classes breaking Symfony2 ACL
When attempting to run findAcl() on an entity with an existing entry in the acl_classes table generated by init:acl I get an AclNotFoundException.
Testing with createAcl() on the object in question before calling findAcl() shows a new record in…
Lord_Baine
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8
votes
1 answer
dynamic proxies with jmx can cause thread leaks?
I have a problem in Java where I set up a dynamic proxy with a JMX interface, pass this on to another component which then makes calls to the proxy object. When I do this, the application leaks two threads for each call, threads which never seem to…
Stefan Thyberg
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8
votes
3 answers
Can I stop service reference generating ArrayOfString instead of string[]?
I have a web method with a signature like this:
public string[] ToUpper(string[] values)
I am using the 'Add Service reference' in Visual Studio 2010 to generate a reference to my service. Unfortunately, this process creates a proxy class called…
Luke Baulch
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