json-lib-user — Json-lib user list

[json-lib-user] Proposal to add the isNullObject method into JSON interface

[Philippe A. <fut...@gm...>]

Hello!

I would like to propose adding the isNullObject method into the JSON
interface.

The current way to determine if an object is null is by comparing the result
of toString with the "null" string. This is the only method common to
NULLObject and JSONObject allowing to do that. It works but it is not as
efficient as isNullObject since time must be spent building a string
representation of the object if it is not null.

Besides adding the declaration in the JSON interface, it would be only a
matter of implementing a function returning true in JSONNull. Obviously it
would break compatibility for those who implemented the JSON interface for
other purposes.

Let me know what you think.

[json-lib-user] Date to JSON

[Petr K. <kob...@gm...>]

Hi list,

how are handled dates in json-lib? I have this code:

    JsonConfig conf = new JsonConfig();
    conf.addIgnoreFieldAnnotation("permissions");

    Session session = JflyRequestCycle.get().getDBSession();

    List<User> users = (List<User>)session.createQuery(
      "select j_user from User as j_user order by j_user.nickname"
    ).list();
    return JSONArray.fromObject(users, conf);

and this throws this exception:

    ...

Caused by: net.sf.json.JSONException:
java.lang.reflect.InvocationTargetException
        at net.sf.json.JSONObject._fromBean(JSONObject.java:987)
        at net.sf.json.JSONObject.fromObject(JSONObject.java:168)
        at net.sf.json.AbstractJSON._processValue(AbstractJSON.java:265)
        at net.sf.json.JSONObject._processValue(JSONObject.java:2808)
        at net.sf.json.JSONObject.processValue(JSONObject.java:2874)
        at net.sf.json.JSONObject.setInternal(JSONObject.java:2889)
        at net.sf.json.JSONObject.setValue(JSONObject.java:1577)
        at net.sf.json.JSONObject._fromBean(JSONObject.java:934)
        at net.sf.json.JSONObject.fromObject(JSONObject.java:168)
        at net.sf.json.AbstractJSON._processValue(AbstractJSON.java:265)
        at net.sf.json.JSONArray._processValue(JSONArray.java:2514)
        at net.sf.json.JSONArray.processValue(JSONArray.java:2539)
        at net.sf.json.JSONArray.addValue(JSONArray.java:2526)
        at net.sf.json.JSONArray._fromCollection(JSONArray.java:1057)
        at net.sf.json.JSONArray.fromObject(JSONArray.java:123)
        at com.jfly.core.services.UserService.list(UserService.java:30)
        ... 38 more
Caused by: java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.commons.beanutils.PropertyUtilsBean.invokeMethod(PropertyUtilsBean.java:2155)
        at org.apache.commons.beanutils.PropertyUtilsBean.getSimpleProperty(PropertyUtilsBean.java:1323)
        at org.apache.commons.beanutils.PropertyUtilsBean.getNestedProperty(PropertyUtilsBean.java:762)
        at org.apache.commons.beanutils.PropertyUtilsBean.getProperty(PropertyUtilsBean.java:837)
        at org.apache.commons.beanutils.PropertyUtils.getProperty(PropertyUtils.java:426)
        at net.sf.json.JSONObject._fromBean(JSONObject.java:918)
        ... 53 more
Caused by: java.lang.IllegalArgumentException
        at java.sql.Date.getHours(Date.java:143)
        ... 63 more

I tracked it down and it's in java.sql.Date.getHours:

    public int getHours() {
	throw new java.lang.IllegalArgumentException();
    }

Is this my problem, json-lib problem or it's somewhere else?

Thanks for reply
- Petr

Re: [json-lib-user] Problem collecting elements of identical name in a array

[Andres A. <aal...@ya...>]

Hi Rodolfo,

Looks like a bug to me. Please file a bug ticket, thank you!

Cheers,
Andres

 -------------------------------------------
http://jroller.com/aalmiray
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand binary, and those who don't.
To understand recursion, we must first understand recursion.




________________________________
From: Rodolfo Bunney <ro...@id...>
To: jso...@li...
Sent: Monday, September 21, 2009 2:17:56 AM
Subject: [json-lib-user] Problem collecting elements of identical name in a array

Hi!

I'm trying to write JSON from an existing XML document and got a problem with collecting all the elements with identical names. If my identical named elements are the only ones in the same depth in the XML document, the parser has no problem converting the document.
But if I have several siblings where a couple of them are identical, the result JSON is not transformed correctly.

I'm doing this from a Groovy script.:

import net.sf.json.xml.XMLSerializer
import net.sf.json.JSON

def xml = """<body>
              <menulist>
                 <titles><foo>foo1</foo><foo>foo2</foo></titles>
                  <item>
                    <value><name>item1</name><action>doAction</action></value>
                  </item>
                  <item>
                    <value><name>item2</name><action>doAction</action></value>
                  </item>
             </menulist>
          </body>"""

XMLSerializer serializer = new XMLSerializer()
JSON json = serializer.read(xml)
return json.toString()

The JSON result:
[
    {
        "titles": [
            "foo1",
            "foo2"
        ],
        "item": [
            {
                "name": "item1",
                "action": "doAction"
            },
            [
                {
                    "name": "item2",
                    "action": "doAction"
                }
            ]
        ]
    }
]

If I remove the <titles> node the XML document is correctly parsed.

Does anyone else have the same problem? Or maybe have a nice workaround?

-- 
Rodolfo Bunney <ro...@id...>
Systemutvikler @ http://www.idium.no
Sommerrogata 13-15, N-0255 Oslo, Norway
22 00 84 00



      

[json-lib-user] JSON -> JAVA; Drop XmlRootElement

[Christoph S. <sun...@ho...>]

Hi!

Is there an option to drop the JSON root-element when unmarshalling JSON to a Java bean?

Incomming JSON:
{ "simplebean": {
     "key":"value", 
     "key2":"value"
  }
}

Target class:
public class DifferentNameBean {

String key;
String key2;
...
}
 



_________________________________________________________________
http://redirect.gimas.net/?n=M0909xWindows7_2
Schnell, zuverlässig, einfach: jetzt Windows 7 kennenlernen!

[json-lib-user] Problem collecting elements of identical name in a array

[Rodolfo B. <ro...@id...>]

Hi!

I'm trying to write JSON from an existing XML document and got a problem
with collecting all the elements with identical names. If my identical named
elements are the only ones in the same depth in the XML document, the parser
has no problem converting the document.
But if I have several siblings where a couple of them are identical, the
result JSON is not transformed correctly.

I'm doing this from a Groovy script.:

import net.sf.json.xml.XMLSerializer
import net.sf.json.JSON

def xml = """<body>
              <menulist>
                 <titles><foo>foo1</foo><foo>foo2</foo></titles>
                  <item>

<value><name>item1</name><action>doAction</action></value>
                  </item>
                  <item>

<value><name>item2</name><action>doAction</action></value>
                  </item>
             </menulist>
          </body>"""

XMLSerializer serializer = new XMLSerializer()
JSON json = serializer.read(xml)
return json.toString()

The JSON result:
[
    {
        "titles": [
            "foo1",
            "foo2"
        ],
        "item": [
            {
                "name": "item1",
                "action": "doAction"
            },
            [
                {
                    "name": "item2",
                    "action": "doAction"
                }
            ]
        ]
    }
]

If I remove the <titles> node the XML document is correctly parsed.

Does anyone else have the same problem? Or maybe have a nice workaround?

-- 
Rodolfo Bunney <ro...@id...>
Systemutvikler @ http://www.idium.no
Sommerrogata 13-15, N-0255 Oslo, Norway
22 00 84 00

[json-lib-user] [ANN] Json-lib 2.3 is available

[Andres A. <aal...@ya...>]

Dear Users,

I'm pleased to announce that Json-lib version 2.3 has been released. 

Download | Documentation | Faq | Changes 

JSON-lib is a java library for transforming beans, maps and XML to JSON
and back again to beans and DynaBeans. It is based on the work by
Douglas Crockford in http://www.json.org/java. 

Changelog:
	* 2795511 Maps with non-String keys throw ClassCastException
	* 2799533 Incorrect event firing on cycles
	* 2807279 JSONObject Map.size() implementation is incorrect. Thanks to Earl Nolan (provided testcase)
	* 2818666 Annotation filter
	* 2817570 net.sf.json.util.JSONUtils.isFunction() locks. Thanks to Ian Wolfcat Atha (provided patch)
	* 2779977 Inconsistent license between the source file and project
	* 2513691 Support for reading both properties and public fields
	* 2776558 undefined not an acceptable parser token
	* 2431487 Allow JSONArray/JSONObject to be Serializable
	* 2682840 JsonValueProcessor not processing primitive arrays (breaking change!)
	* 2665846 Memory Leak in Cycle Detection
	* 2565295 Problems detecting an unreadable property
	* 2792844 Log level: warn vs. info for skipped properties
	* 2790052 Improve exception message on NewBeanInstanceStrategy. Thanks to Henrik Johansson (provided patch)


      

[json-lib-user] Unable to treat "function(){}" as string

[Pedro A. <pe...@ne...>]

Hello.


I have a webapp that has textareas where the users can input anything,
including  javascript code.


The problem is that I can't make jslib treat stuff like "function(){}" as a
string.


Is there any specific rule to encapsulate it? Whatever I do it either
returns "\"function(){}\"" or a JSONFunction, I can never get a string with
the chart "function()"



Thanks


-- 
Pedro Alves
pmgalves-at-gmail.com

Re: [json-lib-user] Parsing problem

[zapping z. <zap...@ya...>]

Hi,
 Thank you. Got it to work with 
JSONObject jsonResponse = JSONObject.fromObject(strResponse);

and
also there was no need to do the replacement function etc this way was
able to use the same response string as in javascript.

Cheers and thx for the lib



________________________________
From: zapping zapping <zap...@ya...>
To: jso...@li...
Sent: Tuesday, June 2, 2009 9:34:44 PM
Subject: [json-lib-user] Parsing problem


Hi,
 I have a json string that is returned from a service like 
{success:"true",code:"200",dataType:"object",objClass:"Message",data:{text:"The room is free. You can start a meeting"}}

When i try to parse it
JSONObject jsonResponse = (JSONObject)JSONSerializer.toJSON(strResponse);

I get an Invalid exception. But the same response string i am able to parse with javascript but not in Java. Tried replacing the quotes with 
strResponse = strResponse.replaceAll("\"", "\\\\\"");
But still throws invalid exception. But when i try it this way with a constant it parses
String strResponse = "{success:\"false\",code:\"300\",dataType:\"object\",objClass:\"Message\",data:{text:\"Unparseable date: 'June 03 2009 11:15:00 AM EDT'\"}}";
JSONObject jsonResponse = (JSONObject)JSONSerializer.toJSON(strResponse);

But not directly from the service.

Can you help me out.

Thx,
Zaps


      

[json-lib-user] Parsing problem

[zapping z. <zap...@ya...>]

Hi,
 I have a json string that is returned from a service like 
{success:"true",code:"200",dataType:"object",objClass:"Message",data:{text:"The room is free. You can start a meeting"}}

When i try to parse it
JSONObject jsonResponse = (JSONObject)JSONSerializer.toJSON(strResponse);

I get an Invalid exception. But the same response string i am able to parse with javascript but not in Java. Tried replacing the quotes with 
strResponse = strResponse.replaceAll("\"", "\\\\\"");
But still throws invalid exception. But when i try it this way with a constant it parses
String strResponse = "{success:\"false\",code:\"300\",dataType:\"object\",objClass:\"Message\",data:{text:\"Unparseable date: 'June 03 2009 11:15:00 AM EDT'\"}}";
JSONObject jsonResponse = (JSONObject)JSONSerializer.toJSON(strResponse);

But not directly from the service.

Can you help me out.

Thx,
Zaps



      

Re: [json-lib-user] First impressions

[Tim P. <tim...@ou...>]

Hi Andres, 

On Tuesday 19 May 2009 16:28:26 Andres Almiray wrote:
> Hi Tim,
>
> Thank you for checking out Json-lib, we hope it proves to be helpful to
> you. Now answers to your questions:
>
>
> "JSONObject uses a HashMap for its properties
> representation because the order of its properties is not important."
> - this is no longer true, as a matter of fact JSONObject uses a
> LinkedHashMap to preserver insertion order, the FAQ must be updated. Have
> in mind that the JSON semantics still declare a JSONObject to be a Bag, per
> the spec.

Good, I thought so, as I had looked at the code and saw you were now 
preserving insertion order. 

> " What is the relationship to json.org?"
> - Json-lib was born from the code found at json.org and evolved from there.

Yes, but Mr Crockford is not actually a developer on this project?

I think it is important to spell out clearly whether this is a derived project 
or one that is actively developed by the originators of JSON.

[snip - ant usage]

> "Oh, I forgot, the main problem, which prompted me to join the list,
> is that the optional setting on the xom jar caused me to have a runtime
> error reported by a user. "
> - an optional dependency means you don't need to download it in order to
> use the library, however you must download it in order to compile one part
> of the library (xml support).

yes, I know what it means, now, after it caused me pain.
I see the use of optional for the ORO library, but not for XOM you 
have askd be to read your POM and determine whether I need to manuall include 
the XOM jar. 
This is not the Maven way. 
I am happy to download enormous numbers of jars that I may or may not need, 
I am not happy having to make decisions about it. 

I think removing optional on the XOM  jar would be good.

> Cheers,
> Andres


cheers and thanks for your library
Tim

Re: [json-lib-user] First impressions

[Andres A. <aal...@ya...>]

Hi Tim,

Thank you for checking out Json-lib, we hope it proves to be helpful to you.
Now answers to your questions:

 
"JSONObject uses a HashMap for its properties 
representation because the order of its properties is not important."
- this is no longer true, as a matter of fact JSONObject uses a LinkedHashMap to preserver insertion order, the FAQ must be updated. Have in mind that the JSON semantics still declare a JSONObject to be a Bag, per the spec.

" What is the relationship to json.org?"
- Json-lib was born from the code found at json.org and evolved from there.

"It looks like you have stopped using Maven to actually build the artefacts, 
I am new to the list and would like to know why."
- this is due to the current jdk3/jdk5 setup, given that maven is unable to handle several source paths that may contain "duplicate" class definitions. We tried using maven's ant plugin but it didn't quite work, nor maven's profile option. These days the Ant build does all the work, but still uses the pom file for dependency management

"Oh, I forgot, the main problem, which prompted me to join the list, 
is that the optional setting on the xom jar caused me to have a runtime 
error reported by a user. "
- an optional dependency means you don't need to download it in order to use the library, however you must download it in order to compile one part of the library (xml support).

Cheers,
Andres

-------------------------------------------
http://jroller.com/aalmiray
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand binary, and those who don't.
To understand recursion, we must first understand recursion.




________________________________
From: Tim Pizey <tim...@ou...>
To: jso...@li...
Sent: Tuesday, May 19, 2009 2:58:08 AM
Subject: [json-lib-user] First impressions

Hi, 

I am just starting with json-lib, and thought you might like to see 
where I bump into the furniture: 

I came to json-lib as a replacement for org.json in the hope of 
getting junit testing facilities, which I have got, thank you. 

I would be interested in more about FAQ 1, as I cannot see any situation in 
which a Bag is the right choice: the population order is of interest and 
should be preserved. To do otherwise is to throw information away. 
The bald statement "JSONObject uses a HashMap for its properties 
representation because the order of its properties is not important."
is a bit strong for me.  Whilst I am sure that it is correct I would like to 
know what would happen if this assumption were not so central. 
I like to round trip in unit tests, the throwing away of information, 
ie the deliberate removal of ordering means that I am unable to do this 
with ease, am not able to use string comparision for equality and 
have had to put in a lot of work. Would it not have been possible to preserve 
the ordering?
Would the performance hot have been so bad?

FAQ What is the relationship to json.org?

It looks like you have stopped using Maven to actually build the artefacts, 
I am new to the list and would like to know why.

When I checkout and type mvn install I get test failure (Kubuntu/sun 
java6/AMD64)

cheers
Tim



[INFO] Surefire report directory: /dist/json-lib/target/surefire-reports
org.apache.maven.surefire.booter.SurefireExecutionException: Unable to 
instantiate POJO 'class 
net.sf.json.TestJSONObject$PrefixerPropertyNameProcessor'; nested exception is 
java.lang.InstantiationException: 
net.sf.json.TestJSONObject$PrefixerPropertyNameProcessor; nested exception is 
org.apache.maven.surefire.testset.TestSetFailedException: Unable to instantiate 
POJO 'class net.sf.json.TestJSONObject$PrefixerPropertyNameProcessor'; nested 
exception is java.lang.InstantiationException: 
net.sf.json.TestJSONObject$PrefixerPropertyNameProcessor
org.apache.maven.surefire.testset.TestSetFailedException: Unable to instantiate 
POJO 'class net.sf.json.TestJSONObject$PrefixerPropertyNameProcessor'; nested 
exception is java.lang.InstantiationException: 
net.sf.json.TestJSONObject$PrefixerPropertyNameProcessor
java.lang.InstantiationException: 
net.sf.json.TestJSONObject$PrefixerPropertyNameProcessor
        at java.lang.Class.newInstance0(Class.java:340)
        at java.lang.Class.newInstance(Class.java:308)







------------------------------------------------------------------------------
Crystal Reports - New Free Runtime and 30 Day Trial
Check out the new simplified licensing option that enables 
unlimited royalty-free distribution of the report engine 
for externally facing server and web deployment. 
http://p.sf.net/sfu/businessobjects
_______________________________________________
json-lib-user mailing list
jso...@li...
https://lists.sourceforge.net/lists/listinfo/json-lib-user



      

Re: [json-lib-user] First impressions

[Tim P. <tim...@ou...>]

On Tuesday 19 May 2009 10:58:08 Tim Pizey wrote:
> Hi,
>
> I am just starting with json-lib, and thought you might like to see
> where I bump into the furniture:

Oh, I forgot, the main problem, which prompted me to join the list, 
is that the optional setting on the xom jar caused me to have a runtime 
error reported by a user. 

I use Maven so as to have my dependencies managed. 
I have never before encountered the optional flag. 
I am sure you have good reasons for using it, but thought you might like 
to know that it bit me. 

cheers
Tim

[json-lib-user] First impressions

[Tim P. <tim...@ou...>]

Hi, 

I am just starting with json-lib, and thought you might like to see 
where I bump into the furniture: 

I came to json-lib as a replacement for org.json in the hope of 
getting junit testing facilities, which I have got, thank you. 

I would be interested in more about FAQ 1, as I cannot see any situation in 
which a Bag is the right choice: the population order is of interest and 
should be preserved. To do otherwise is to throw information away. 
The bald statement "JSONObject uses a HashMap for its properties 
representation because the order of its properties is not important."
is a bit strong for me.  Whilst I am sure that it is correct I would like to 
know what would happen if this assumption were not so central. 
I like to round trip in unit tests, the throwing away of information, 
ie the deliberate removal of ordering means that I am unable to do this 
with ease, am not able to use string comparision for equality and 
have had to put in a lot of work. Would it not have been possible to preserve 
the ordering?
Would the performance hot have been so bad?

FAQ What is the relationship to json.org?

It looks like you have stopped using Maven to actually build the artefacts, 
I am new to the list and would like to know why.

When I checkout and type mvn install I get test failure (Kubuntu/sun 
java6/AMD64)

cheers
Tim



[INFO] Surefire report directory: /dist/json-lib/target/surefire-reports
org.apache.maven.surefire.booter.SurefireExecutionException: Unable to 
instantiate POJO 'class 
net.sf.json.TestJSONObject$PrefixerPropertyNameProcessor'; nested exception is 
java.lang.InstantiationException: 
net.sf.json.TestJSONObject$PrefixerPropertyNameProcessor; nested exception is 
org.apache.maven.surefire.testset.TestSetFailedException: Unable to instantiate 
POJO 'class net.sf.json.TestJSONObject$PrefixerPropertyNameProcessor'; nested 
exception is java.lang.InstantiationException: 
net.sf.json.TestJSONObject$PrefixerPropertyNameProcessor
org.apache.maven.surefire.testset.TestSetFailedException: Unable to instantiate 
POJO 'class net.sf.json.TestJSONObject$PrefixerPropertyNameProcessor'; nested 
exception is java.lang.InstantiationException: 
net.sf.json.TestJSONObject$PrefixerPropertyNameProcessor
java.lang.InstantiationException: 
net.sf.json.TestJSONObject$PrefixerPropertyNameProcessor
        at java.lang.Class.newInstance0(Class.java:340)
        at java.lang.Class.newInstance(Class.java:308)

Re: [json-lib-user] Fwd: Property 'id' has no getter method in class...

[Andres A. <aal...@ya...>]

Hi Marek,

Looks like your bean class must be declared public, otherwise the bean introspection will fail.

Cheers,
Andres

 -------------------------------------------
http://jroller.com/aalmiray
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand binary, and those who don't.
To understand recursion, we must first understand recursion.




________________________________
From: Marek <xxx...@gm...>
To: jso...@li...
Sent: Sunday, May 10, 2009 5:41:46 AM
Subject: [json-lib-user] Fwd: Property 'id' has no getter method in class...



Hallo I have very simple example, but it doesn't go.There is print exception and classes:   http://stargate.cnl.tuke.sk/%7Emaly/error


      

[json-lib-user] Fwd: Property 'id' has no getter method in class...

[Marek <xxx...@gm...>]

Hallo I have very simple example, but it doesn't go.There is print exception
and classes:   http://stargate.cnl.tuke.sk/~maly/error<http://stargate.cnl.tuke.sk/%7Emaly/error>

[json-lib-user] Property 'id' has no getter method in class...

[Marek <xxx...@gm...>]

Hallo I have very simple example, but it doesn't go.There is print exception
and classes:   http://stargate.cnl.tuke.sk/~maly/error

Re: [json-lib-user] Is it possible to force JSONObject.toBean() throw exceptions on cast issues for primitives as oppose to using default values?

[Leonard G. <Leo...@ma...>]

Hi Andres and thanks for reply.

The example demonstrates how to use defaultValueProcessor going java->Json;
I need to do the reverse

I have a JSON string that gets converted to JSONObject  that  get converted to Java.

I have a call:

MyBean obj = (MyBean) JSONObject.toBean(jsResponse, MyBean.class);

When I tried to use JSONConfig with with defaultValueProcessor, it did not help much since all the types are the strings or list of strings.

I noticed that that toBean() can also take JSonConfig - maybe there is something that can be passed there?

Thanks




________________________________
From: Andres Almiray [mailto:aal...@ya...]
Sent: Friday, May 01, 2009 12:06 PM
To: Leonard Gestrin; jso...@li...
Subject: Re: [json-lib-user] Is it possible to force JSONObject.toBean() throw exceptions on cast issues for primitives as oppose to using default values?

Hi Leonard,

Yes, you can register a DefaultValueProcessor to do just that.
http://json-lib.sourceforge.net/advanced.html
http://json-lib.sourceforge.net/xref-test/net/sf/json/TestJSONObject.html#812
http://json-lib.sourceforge.net/xref-test/net/sf/json/TestJSONObject.html#833

Cheers,
Andres

-------------------------------------------
http://jroller.com/aalmiray
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand binary, and those who don't.
To understand recursion, we must first understand recursion.


________________________________
From: Leonard Gestrin <lge...@gm...>
To: jso...@li...
Sent: Thursday, April 30, 2009 8:15:13 PM
Subject: [json-lib-user] Is it possible to force JSONObject.toBean() throw exceptions on cast issues for primitives as oppose to using default values?
Hello, ( I apologize if this is duplicate message)

I noticed that if I have a bean that has primitive member with setters and getters and I try to instantiate it from JSON string that has invalid int for that member, EZ Morph is using default value 0 instead of throwing exceptions.

I looked at the code of EZMorpth and I could not find an easy way to change that default behavior.  I would like to be able to differentiate between invalid value and default value.  Is there some easy trick I can use to do so?

Thanks
Leonard

Re: [json-lib-user] Is it possible to force JSONObject.toBean() throw exceptions on cast issues for primitives as oppose to using default values?

[Andres A. <aal...@ya...>]

Hi Leonard,

Yes, you can register a DefaultValueProcessor to do just that.
http://json-lib.sourceforge.net/advanced.html
http://json-lib.sourceforge.net/xref-test/net/sf/json/TestJSONObject.html#812
http://json-lib.sourceforge.net/xref-test/net/sf/json/TestJSONObject.html#833

Cheers,
Andres
 -------------------------------------------
http://jroller.com/aalmiray
http://www.linkedin.com/in/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand binary, and those who don't.
To understand recursion, we must first understand recursion.




________________________________
From: Leonard Gestrin <lge...@gm...>
To: jso...@li...
Sent: Thursday, April 30, 2009 8:15:13 PM
Subject: [json-lib-user] Is it possible to force JSONObject.toBean() throw exceptions on cast issues for primitives as oppose to using default values?


Hello, ( I apologize if this is duplicate message)
 
I noticed that if I have a bean that has primitive member with setters and getters and I try to instantiate it from JSON string that has invalid int for that member, EZ Morph is using default value 0 instead of throwing exceptions. 
 
I looked at the code of EZMorpth and I could not find an easy way to change that default behavior.  I would like to be able to differentiate between invalid value and default value.  Is there some easy trick I can use to do so?
 
Thanks
Leonard


      

[json-lib-user] Is it possible to force JSONObject.toBean() throw exceptions on cast issues for primitives as oppose to using default values?

[Leonard G. <lge...@gm...>]

Hello, ( I apologize if this is duplicate message)



I noticed that if I have a bean that has primitive member with setters and
getters and I try to instantiate it from JSON string that has invalid int
for that member, EZ Morph is using default value 0 instead of throwing
exceptions.



I looked at the code of EZMorpth and I could not find an easy way to change
that default behavior.  I would like to be able to differentiate between
invalid value and default value.  Is there some easy trick I can use to do
so?



Thanks

Leonard

[json-lib-user] Is it possible to force JSONObject.toBean() throw exceptions on cast issues for primitives as oppose to using default values?

[Leonard G. <Leo...@ma...>]

Hello, ( I apologize if this is duplicate message)

I noticed that if I have a bean that has primitive member with setters and getters and I try to instantiate it from JSON string that has invalid int for that member, EZ Morph is using default value 0 instead of throwing exceptions.

I looked at the code of EZMorpth and I could not find an easy way to change that default behavior.  I would like to be able to differentiate between invalid value and default value.  Is there some easy trick I can use to do so?

Thanks
Leonard

[json-lib-user] Is it possible to force JSONObject.toBean() throw exceptions on cast issues for primitives as oppose to using default values?

[Leonard G. <Leo...@ma...>]

Hello, ( I apologize if this is duplicate message)

I noticed that if I have a bean that has primitive member with setters and getters and I try to instantiate it from JSON string that has invalid int for that member, EZ Morph is using default value 0 instead of throwing exceptions.

I looked at the code of EZMorpth and I could not find an easy way to change that default behavior.  I would like to be able to differentiate between invalid value and default value.  Is there some easy trick I can use to do so?

Thanks
Leonard

[json-lib-user] Is it possible to force JSONObject.toBean() throw exceptions on cast issues for primitives as oppose to using default values?

[Leonard G. <Leo...@ma...>]

Hello,

I noticed that if I have a bean that has primitive member with setters and getters and I try to instantiate it from JSON string that has invalid int for that member, EZ Morph is using default value 0 instead of throwing exceptions.

I looked at the code of EZMorpth and I could not find an easy way to change that default behavior.  I would like to be able to differentiate between invalid value and default value.  Is there some easy trick I can use to do so?

Thanks
Leonard

[json-lib-user] Log level: warn vs. info for skipped properties

[Jonathan <jso...@ki...>]

Currently, json-lib will log a message at warn level if during the process of converting an object to json if finds a property descriptor without an attendant write method. See lines 362 and 698 of JSONObject:

log.warn( "Property '" + key + "' of "+ root.getClass()+" has no write method. SKIPPED." );

There are several valid, expected reasons why this condition might occur. For instance, it turns out that the javaassist classes created by Hibernate often run into this situation. Would you consider changing the log level to info for these statements? It seems a better fit for this particular condition:

http://en.wikipedia.org/wiki/Java_Logging_Frameworks#Level

What do you think?

Jonathan

[json-lib-user] setBeanProcessors

[Sundling, P. <Pau...@sm...>]

It seems like it would be nice to have a convenience method to set
multiple bean processors on JsonConfig.  There are ways to do so in
Spring using FactoryBean and Initializing bean, even though there is not
a normal setter like my convenience method below.
 
If it's not deemed generally useful, it could be added to the JsonView
for json-lib-ext-spring instead.
 
Here's the jdk15 version of what I'm thinking:
 
public void setJsonBeanProcessors(Map<Class, JsonBeanProcessor>
jsonBeanProcessors) {
  Set<Class> classes = jsonBeanProcessors.keySet();
  for (Iterator<Class> iterator = classes.iterator();
iterator.hasNext();) {
    Class target = iterator.next();
    registerJsonBeanProcessor(target, jsonBeanProcessors.get(target)); 
  }
}
 
Then a convenience method coupld be added to delegate this in JsonView
to it's JsonConfig.
 
What do you think?
 
Paul Sundling

Re: [json-lib-user] Groovy HTTPBuilder + JSON Parsing Error

[Ronald R. D. <ron...@gm...>]

I figured out what it is and as far as I am concerned it is broken in
the JSON.  What was happening is that I had spaces: at the beginning
of the JSON string.  So for example, it looked like:

    { "node" :

but if I changed it to be:

{ "node" :

Then it worked. Now, I just need to understand how to deal with the
parsed stream.

I tried the following:

// parse the JSON response object:
   json.responseData.each {
     println "  ${it}"
   }

I also tried:

// parse the JSON response object:
   json.responseData.node.each {
     println "  ${it}"
   }

But I get back NULL data both cases.

Thoughts?

-- 
Ron DiFrango
http://rdifrango.blogspot.com/

On Fri, Mar 13, 2009 at 9:59 AM, Ronald R. DiFrango
<ron...@gm...> wrote:
> All,
>
> I am attempting to do the following with Groovy:
>
> http.request( GET, JSON ) {
>   url.query = [
> sourceName:'avm://portal--admin/-1;www;avm_webapps;ROOT;DCP_4963.JPG',
> destName:'HHMI Documents/images', name:'ronCopy.jpg', remove:'false' ]
>
>   requestContentType : JSON
>
>  // response handler for a success response code:
>  response.success = { resp, json ->
>   println resp.statusLine
>
>   // parse the JSON response object:
>   json.responseData.results.each {
>     println "  ${it.titleNoFormatting} : ${it.visibleUrl}"
>   }
>  }
>
>  // handler for any failure status code:
>  response.failure = { resp ->
>   println "Unexpected error: ${resp.statusLine.statusCode} :
> ${resp.statusLine.reasonPhrase}"
>  }
> }
>
> The response JSON looks like the following:
>
> { "node" :
>                       {
>                               "projectOverviewLocation" :
> "workspace://SpacesStore/d83b8a9b-8685-40d4-b045-5def043b85a5"
>                       }
>               }
>
>
> Which to me looks like valid JSON, but I get  the following exception:
>
> Exception thrown: Invalid JSON String
>
> net.sf.json.JSONException: Invalid JSON String
>       at net.sf.json.JSONSerializer.toJSON(JSONSerializer.java:143)
>       at net.sf.json.JSONSerializer.toJSON(JSONSerializer.java:103)
>       at net.sf.json.groovy.JsonSlurper.parseText(JsonSlurper.java:78)
>       at groovyx.net.http.ParserRegistry.parseJSON(ParserRegistry.java:185)
>       at groovyx.net.http.HTTPBuilder.doRequest(HTTPBuilder.java:461)
>       at groovyx.net.http.HTTPBuilder.doRequest(HTTPBuilder.java:407)
>       at groovyx.net.http.HTTPBuilder.request(HTTPBuilder.java:360)
>       at ConsoleScript52.run(ConsoleScript52:9)
>
> Any reason why that might be occurring?
>
> --
> Ron DiFrango
> http://rdifrango.blogspot.com/
>