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• BigQuery - UK dev community, JSON, nested/repeated, improved data loading - Live from London

  BigQuery - UK dev community, JSON, nested/repeated, improved data loading - Live from London Join Michael Manoochehri and Ryan Boyd live from London to discuss Strata London and Best Practices for using BigQuery. They'll also host an open Office Hours. Please add your questions to Google Moderator on developers.google.com From: GoogleDevelopers Views: 87 14 ratings Time: 33:00 More in Science & Technology

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• Why do so many APIs boast about being RESTful?

  - by John Hoffman

  I have noticed that many APIs I have encountered such as Facebook's old API and Skydrive's API boast about being RESTful. Hence, I looked up what REST means on Wikipedia (http://en.wikipedia.org/wiki/Representational_state_transfer), but I don't understand why do APIs boast about being RESTful. Doesn't RESTful just mean that an API works via communications across the web such as via HTTP? What's the big deal? This sounds like any API that relies on third-parties.

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• Storing translation data as JSON column

  - by j0ntech

  We're deciding on how to store translations of some descriptions of database items. We could go the traditional way and keep a translations table (and a language table and an object_translation linking table) OR we thought it might be better to just have a Description column that contains JSON like the following: { "EN": "This is the translation in English", "EE" : "See on kirjeldus eesti keeles" } Are there any serious downsides as to why we shouldn't use this? (I haven't seen it being used anywhere else)

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• USING JSON SERIALIZATION FOR CODE BEHIND-JAVASCRIPT DATA COMMUNICATION

  Many of us went through a scenario like, can us pass a full of C# type/class to the javascript? Modify from there and again return back to C#? The difficulty is that JavaScript only knows string format comared to C# which has many data types. So how we can pass an entires class to JavaScript? Here we need to handle with JSON serialization techniques.

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• Reasons NOT to use JSF [closed]

  - by Vain Fellowman

  I am new to StackExchange, but I figured you would be able to help me. We're crating a new Java Enterprise application, replacing an legacy JSP solution. Due to many many changes, the UI and parts of the business logic will completely be rethought and reimplemented. Our first thought was JSF, as it is the standard in Java EE. At first I had a good impression. But now I am trying to implement a functional prototype, and have some really serious concerns about using it. First of all, it creates the worst, most cluttered invalid pseudo-HTML/CSS/JS mix I've ever seen. It violates every single rule I learned in web-development. Furthermore it throws together, what never should be so tightly coupled: Layout, Design, Logic and Communication with the server. I don't see how I would be able to extend this output comfortably, whether styling with CSS, adding UI candy (like configurable hot-keys, drag-and-drop widgets) or whatever. Secondly, it is way too complicated. Its complexity is outstanding. If you ask me, it's a poor abstraction of basic web technologies, crippled and useless in the end. What benefits do I have? None, if you think about. Hundreds of components? I see ten-thousands of HTML/CSS snippets, ten-thousands of JavaScript snippets and thousands of jQuery plug-ins in addition. It solves really many problems - we wouldn't have if we wouldn't use JSF. Or the front-controller pattern at all. And Lastly, I think we will have to start over in, say 2 years. I don't see how I can implement all of our first GUI mock-up (Besides; we have no JSF Expert in our team). Maybe we could hack it together somehow. And then there will be more. I'm sure we could hack our hack. But at some point, we'll be stuck. Due to everything above the service tier is in control of JSF. And we will have to start over. My suggestion would be to implement a REST api, using JAX-RS. Then create a HTML5/Javascript client with client side MVC. (or some flavor of MVC..) By the way; we will need the REST api anyway, as we are developing a partial Android front-end, too. I doubt, that JSF is the best solution nowadays. As the Internet is evolving, I really don't see why we should use this 'rake'. Now, what are pros/cons? How can I emphasize my point to not use JSF? What are strong points to use JSF over my suggestion?

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• DB12c In-Memory & JSON ?????

  - by katsumii

  ???8?18??20????????? DB12c PS1(PatchSet 1, 12.1.0.2.0)?????????JSON ??In-Memory Option ??????????????????????????????????????????????????????????????????????????In-Memory???????????????????????????????????????????????????????????????????????[????] Oracle Database 12c In-Memory?????????! (Oracle Technology Network Japan Blog)?Oracle Database 12c? Oracle In-Memory Option???? 8?28?(?)19:00 ~20:40 @  ??????????(??????)

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• How to optimize this JSON/JQuery/Javascript function in IE7/IE8?

  - by melaos

  hi guys, i'm using this function to parse this json data but i find the function to be really slow in IE7 and slightly slow in IE8. basically the first listbox generate the main product list, and upon selection of the main list, it will populate the second list. this is my data: [{"ProductCategoryId":209,"ProductCategoryName":"X-Fi","ProductSubCategoryId":668,"ProductSubCategoryName":"External Solutions","ProductId":15913,"ProductName":"Creative Xmod","ProductServiceLifeId":1},{"ProductCategoryId":209,"ProductCategoryName":"X-Fi","ProductSubCategoryId":668,"ProductSubCategoryName":"External Solutions","ProductId":15913,"ProductName":"Creative Xmod","ProductServiceLifeId":1},{"ProductCategoryId":209,"ProductCategoryName":"X-Fi","ProductSubCategoryId":668,"ProductSubCategoryName":"External Solutions","ProductId":18094,"ProductName":"Sound Blaster Wireless Receiver","ProductServiceLifeId":1},{"ProductCategoryId":209,"ProductCategoryName":"X-Fi","ProductSubCategoryId":668,"ProductSubCategoryName":"External Solutions","ProductId":16185,"ProductName":"Xdock Wireless","ProductServiceLifeId":1},{"ProductCategoryId":209,"ProductCategoryName":"X-Fi","ProductSubCategoryId":668,"ProductSubCategoryName":"External Solutions","ProductId":16186,"ProductName":"Xmod Wireless","ProductServiceLifeId":1}] and these are the functions that i'm using: //Three Product Panes function function populateMainPane() { $.getJSON('/Home/ThreePaneProductData/', function(data) { products = data; alert(JSON.stringify(products)); var prodCategory = {}; for (i = 0; i < products.length; i++) { prodCategory[products[i].ProductCategoryId] = products[i].ProductCategoryName; } //end for //take only unique product category to be used var id = 0; for (id in prodCategory) { if (prodCategory.hasOwnProperty(id)) { $(".LBox1").append("<option value='" + id + "'>" + prodCategory[id] + "</option>"); //alert(prodCategory[id]); } } var url = document.location.href; var parms = url.substring(url.indexOf("?") + 1).split("&"); for (var i = 0; i < parms.length; i++) { var parm = parms[i].split("="); if (parm[0].toLowerCase() == "pid") { $(".PanelProductReg").show(); var nProductIds = parm[1].split(","); for (var k = 0; k < nProductIds.length; k++) { var nProductId = parseInt(nProductIds[k], 10); for (var j = 0; j < products.length; j++) { if (nProductId == parseInt(products[j].ProductId, 10)) { addProductRow(nProductId, products[j].ProductName); j = products.length; } } //end for } } } }); } //end function function populateSubCategoryPane() { var subCategory = {}; for (var i = 0; i < products.length; i++) { if (products[i].ProductCategoryId == $('.LBox1').val()) subCategory[products[i].ProductSubCategoryId] = products[i].ProductSubCategoryName; } //end for //clear off the list box first $(".LBox2").html(""); var id = 0; for (id in subCategory) { if (subCategory.hasOwnProperty(id)) { $(".LBox2").append("<option value='" + id + "'>" + subCategory[id] + "</option>"); //alert(prodCategory[id]); } } } //end function is there anything i can do to optimize this or is this a known browser issue?

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• How is architectural design done in an agile environment?

  - by B?????

  I have read Principles for the Agile Architect, where they defined next principles : Principle #1 The teams that code the system design the system. Principle #2 Build the simplest architecture that can possibly work. Principle #3 When in doubt, code it out. Principle #4 They build it, they test it. Principle #5 The bigger the system, the longer the runway. Principle #6 System architecture is a role collaboration. Principle #7 There is no monopoly on innovation. The paper says that most of the architecture design is done during the coding phase, and only system design before that. That is fine. So, how is the system design done? Using UML? Or a document that defines interfaces and major blocks? Maybe something else?

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• Need to move a debian server from i686 to x86_64 architecture

  - by user64204

  I have a debian server that I need to move from one hosting provider to another. I don't really know how the old server was setup, all I know is that it's running a Ruby on Rails application with a lot of custom libraries installed and that I should prepare myself for a painful migration. Old server: -os: debian 5.0.9 -used disk space: 3.2GB -architecture: i686 New server: -os: debian 5.0.9 -free disk space: 10GB -architecture: x86_64 As you can see the problem is that the servers are running different architectures. Q: Is there anyway I could somehow migrate the old to the new server in a few steps (or am I just dreaming I could) ? I was thinking maybe I could: -get list of packages and gems installed on old server and use for loop to install them all on the new -copy the disk content from old to new server while excluding what is architecture-specific (the problem is that I don't really know what to exclude).

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• How do I parse JSON from a Java HTTPResponse?

  - by Joe Ludwig

  I have an HttpResponse object for a web request I just made. The response is in the JSON format, so I need to parse it. I can do it in an absurdly complex way, but it seems like there must be a better way. Is this really the best I can do? HttpResponse response; // some response object Reader in = new BufferedReader( new InputStreamReader(response.getEntity().getContent(), "UTF-8")); StringBuilder builder= new StringBuilder(); char[] buf = new char[1000]; int l = 0; while (l >= 0) { builder.append(buf, 0, l); l = in.read(buf); } JSONTokener tokener = new JSONTokener( builder.toString() ); JSONArray finalResult = new JSONArray( tokener ); I'm on Android if that makes any difference.

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• Convert an HTML form field to a JSON object with inner objects.

  - by Tawani

  Given the following HTML form: <form id="myform"> Company: <input type="text" name="Company" value="ACME, INC."/> First Name: <input type="text" name="Contact.FirstName" value="Daffy"/> Last Name: <input type="text" name="Contact.LastName" value="Duck"/> </form> What is the best way serialize this form in javascript to a JSON object in the format: { Company:"ACME, INC.", Contact:{FirstName:"Daffy", LastName:"Duck"} } Also note that there might be more than 1 "." sign in the field name.

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• How can I enable Pascal casing by default when using Jackson JSON in Spring MVC?

  - by bhilstrom

  I have a project that uses Spring MVC to create and handle multiple REST endpoints. I'm currently working on using Jackson to automatically handle the seralization/deserialization of JSON using the @RequestBody and @ResponseBody annotations. I have gotten Jackson working, so I've got a starting point. My problem is that our old serialization was done manually and used Pascal casing instead of Camel casing ("MyVariable" instead of "myVariable"), and Jackson does Camel casing by default. I know that I can manually change the name for a variable using @JsonProperty. That being said, I do not consider adding "@JsonProperty" to all of my variables to be a viable long-term solution. Is there a way to make Jackson use Pascal casing when serializing and deserializing other than using the @JsonProperty annotation?

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• In Django : How to serialize dict object to json ?

  - by Rohit

  I have this very basic problem, >>> serializers.serialize("json", {'a':1}) Traceback (most recent call last): File "<console>", line 1, in <module> File "/usr/lib/pymodules/python2.6/django/core/serializers/__init__.py", line 87, in serialize s.serialize(queryset, **options) File "/usr/lib/pymodules/python2.6/django/core/serializers/base.py", line 40, in serialize for field in obj._meta.local_fields: AttributeError: 'str' object has no attribute '_meta' >>> How can this be done ? Thanks in advance !

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• How do I put my return data from an asmx into JSON? I'm having trouble finding decent literature

  - by jphenow

  I want to return an array of javascript objects from my asp.net asmx file. ie. variable = [ { *value1*: 'value1', *value2*: 'value2', ..., }, { . . } ]; I seem have been having trouble reaching this. I'd put this into code but I've been hacking away at it so much it'd probably do more harm than good in having this answered. Basically I am using a web service to find names as people type the name. I'd use a regular text file or something but its a huge database that's always changing - and don't worry I've indexed the names so searching can be a little snappier - but I would really prefer to stick with this method and just figure out how to get usable JSON back to javascript. I've seen a few that sort of attempt to describe how one would approach this but I honestly think microsofts articles are damn near unreadable. Thanks in advance for assistance.

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• How might I escape Unicode characters in a JSON string using JavaScript?

  - by user293006

  JSON String: { "id":31896, "name":"Zickey attitude - McKinley, La Rosi\u00e8re, 21 ao\u00fbt 2006", ... } this causes an unterminated string in JavaScript. My attempt at a solution is: data.replace(/(\S)\1(\1)+/g, ''); or data.replace(/\\u([0-9A-Z])/, ''); any ideas/solution? Example: http://api.jamendo.com/get2/id+name+url+stream+album_name+album_url+album_id+artist_id+artist_name/track/jsonpretty/track_album+album_artist/?n=13&order=ratingmonth_desc&tag_idstr=jazz last node is the problem, fyi. (/\\u([0-9A-Z])/, '\1');

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• How to get JSON objects value if it's name contains dots?

  - by manakor

  I have a very simple JSON array (please focus on "points.bean.pointsBase" object): var mydata = {"list": [ {"points.bean.pointsBase": [ {"time": 2000, "caption":"caption text", duration: 5000}, {"time": 6000, "caption":"caption text", duration: 3000} ] } ] }; // Usually we make smth like this to get the value: var smth = mydata.list[0].points.bean.pointsBase[0].time; alert(smth); // should display 2000 But, unfortunately, it does display nothing. When I change "points.bean.pointsBase" to smth without dots in it's name - everything works! However, I can't change this name to anything else without dots, but I need to get a value?! Is there any options to get it?

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• Send JSON object via GET and POST without having to wrapping it in another object literal, and manag

  - by Kucebe

  My site does some short ajax call in JSON format, using jQuery. At client-side i'd like to send object just passing it in ajax function, without being forced to wrap it in an object literal like this: {'person' : person}. For the same reasons, at server-side i'd like to manage objects without the binding of $_GET['person'] or $_POST['person']. For example: var person = { 'name' : 'John', 'lastName' : 'Doe', 'age' : 32, 'married' : true } sendAjaxRequest(person); in php, using: $person = json_decode(file_get_contents("php://input")); i can get easily the object, but only with POST format, not in GET. Any suggestions?

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• How to get jSon object in servlet from jsp?

  - by divi

  In jsp page i have written: var sel = document.getElementById("Wimax"); var ip = sel.options[sel.selectedIndex].value; var param; var url = 'ConfigurationServlet?ActionID=Configuration_Physical_Get'; httpRequest = new ActiveXObject("Microsoft.XMLHTTP"); httpRequest.open("POST", url, true); httpRequest.onreadystatechange = handler(){ if (httpRequest.readyState == 4) { if (httpRequest.status == 200) { param = 'ip='+ip; param += 'mmv='+mmv; param += "tab="+tab; }}; httpRequest.send(param); i want this param variable in my configurationServlet. Can any one tel me how to get this json object in servlet???

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• How to store and access JSON data for a site?

  - by Callmeed

  I'm buiding an HTML/jQuery site where almost all the content comes from remote JSON data. I'm having trouble coming up with a good way to store and access the data in the future (scope-wise). Currently, I've written a jQuery plugin that gets the JSONP data when the site loads. But I have other functions and jQuery plugins that need to access this data. Where should this data be stored so other functions and plugins can access it? Should it be a global variable? If it matters, this site will only run on the iPad and the back-end of the site is in Rails.

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• Send JSON object via GET and POST in php without having to wrapping it in another object literal.

  - by Kucebe

  My site does some short ajax call in JSON format, using jQuery. At client-side i'd like to send object just passing it in ajax function, without being forced to wrap it in an object literal like this: {'person' : person}. For the same reasons, at server-side i'd like to manage objects without the binding of $_GET['person'] or $_POST['person']. For example: var person = { 'name' : 'John', 'lastName' : 'Doe', 'age' : 32, 'married' : true } sendAjaxRequest(person); in php, using: $person = json_decode(file_get_contents("php://input")); i can get easily the object, but only with POST format, not in GET. Any suggestions?

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• How to get maximum/largest value from json object with Android?

  - by blankon91

  I've json string like this: {"GetReportResult":[ {"bulan":"4","total":"2448","type":"CHEESE1K","uang":"8847823"},{"bulan":"4","total":"572476","type":"ESL","uang":"5863408410"},{"bulan":"4","total":"46008","type":"ESL500ML","uang":"234498301"},{"bulan":"4","total":"228985","type":"UHT","uang":"1367172990"},{"bulan":"4","total":"40995","type":"WHP","uang":"235750452"},{"bulan":"5","total":"5703","type":"CHEESE1K","uang":"134929306"},{"bulan":"5","total":"648663","type":"ESL","uang":"6645764498"},{"bulan":"5","total":"49305","type":"ESL500ML","uang":"266817346"},{"bulan":"5","total":"287867","type":"UHT","uang":"1446897805"},{"bulan":"5","total":"51958","type":"WHP","uang":"631994613"},{"bulan":"6","total":"4390","type":"CHEESE1K","uang":"104527773"},{"bulan":"6","total":"443335","type":"ESL","uang":"4540123082"},{"bulan":"6","total":"28462","type":"ESL500ML","uang":"148290912"},{"bulan":"6","total":"213250","type":"UHT","uang":"1197646870"},{"bulan":"6","total":"27049","type":"WHP","uang":"189802525"} ]} I want to get maximum/largest value of bulan, which is 6. How to do that on android?

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• Json, Timer, Ajax, What is faster (for shared cronometer) ?

  - by Felipe

  Hi everybody, I'm developing an application using ASP.Net. For first the idea: "My WebApp needs an cronometer to be shared by users and all users will se the same value in cronometer. When a user clicks on a button, the cronometer needs to be restarted and all users will need to see that!" All right, now I'd like to know what's the best choose to improve more performace an make sure that all users will see the same value in cronometer ? Need I use JSon (with jquery in client side), Timer with UpdatePanel of Ajax Extensions, pure Ajax (with JQuery) or any idea to suggested ? Any suggestion for how to shared a cronometer for all users in C# (put information in Cache or database) ? Thanks all Cheers

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• jQuery uses (new Function("return " + data))(); instead of eval(data); to parse JSON, why?

  - by Luca Matteis

  This link shows you that jQuery uses (new Function("return " + data))(); for older browsers, to parse a JSON string instead of eval(). What are the benefits of this? What if the JSON string isn't safe?

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• Token based Authentication for WCF HTTP/REST Services: Authorization

  - by Your DisplayName here!

  In the previous post I showed how token based authentication can be implemented for WCF HTTP based services. Authentication is the process of finding out who the user is – this includes anonymous users. Then it is up to the service to decide under which circumstances the client has access to the service as a whole or individual operations. This is called authorization. By default – my framework does not allow anonymous users and will deny access right in the service authorization manager. You can however turn anonymous access on – that means technically, that instead of denying access, an anonymous principal is placed on Thread.CurrentPrincipal. You can flip that switch in the configuration class that you can pass into the service host/factory. var configuration = new WebTokenWebServiceHostConfiguration {     AllowAnonymousAccess = true }; But this is not enough, in addition you also need to decorate the individual operations to allow anonymous access as well, e.g.: [AllowAnonymousAccess] public string GetInfo() {     ... } Inside these operations you might have an authenticated or an anonymous principal on Thread.CurrentPrincipal, and it is up to your code to decide what to do. Side note: Being a security guy, I like this opt-in approach to anonymous access much better that all those opt-out approaches out there (like the Authorize attribute – or this.). Claims-based Authorization Since there is a ClaimsPrincipal available, you can use the standard WIF claims authorization manager infrastructure – either declaratively via ClaimsPrincipalPermission or programmatically (see also here). [ClaimsPrincipalPermission(SecurityAction.Demand,     Resource = "Claims",     Operation = "View")] public ViewClaims GetClientIdentity() {     return new ServiceLogic().GetClaims(); }   In addition you can also turn off per-request authorization (see here for background) via the config and just use the “domain specific” instrumentation. While the code is not 100% done – you can download the current solution here. HTH (Wanna learn more about federation, WIF, claims, tokens etc.? Click here.)

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• multiple webapps in tomcat -- what is the optimal architecture?

  - by rvdb

  I am maintaining a growing base of mainly Cocoon-2.1-based web applications [http://cocoon.apache.org/2.1/], deployed in a Tomcat servlet container [http://tomcat.apache.org/], and proxied with an Apache http server [http://httpd.apache.org/docs/2.2/]. I am conceptually struggling with the best way to deploy multiple web applications in Tomcat. Since I'm not a Java programmer and we don't have any sysadmin staff I have to figure out myself what is the most sensible way to do this. My setup has evolved through 2 scenarios and I'm considering a third for maximal separation of the distinct webapps. [1] 1 Tomcat instance, 1 Cocoon instance, multiple webapps -tomcat |_ webapps |_ webapp1 |_ webapp2 |_ webapp[n] |_ WEB-INF (with Cocoon libs) This was my first approach: just drop all web applications inside a single Cocoon webapps folder inside a single Tomcat container. This seemed to run fine, I did not encounter any memory issues. However, this poses a maintainability drawback, as some Cocoon components are subject to updates, which often affect the webapp coding. Hence, updating Cocoon becomes unwieldy: since all webapps share the same pool of Cocoon components, updating one of them would require the code in all web applications to be updated simultaneously. In order to isolate the web applications, I moved to the second scenario. [2] 1 Tomcat instance, each webapp in its dedicated Cocoon environment -tomcat |_ webapps |_ webapp1 | |_ WEB-INF (with Cocoon libs) |_ webapp1 | |_ WEB-INF (with Cocoon libs) |_ webapp[n] |_ WEB-INF (with Cocoon libs) This approach separates all webapps into their own Cocoon environment, run inside a single Tomcat container. In theory, this works fine: all webapps can be updated independently. However, this soon results in PermGenSpace errors. It seemed that I could manage the problem by increasing memory allocation for Tomcat, but I realise this isn't a structural solution, and that overloading a single Tomcat in this way is prone to future memory errors. This set me thinking about the third scenario. [3] multiple Tomcat instances, each with a single webapp in its dedicated Cocoon environment -tomcat |_ webapps |_ webapp1 |_ WEB-INF (with Cocoon libs) -tomcat |_ webapps |_ webapp2 |_ WEB-INF (with Cocoon libs) -tomcat |_ webapps |_ webapp[n] |_ WEB-INF (with Cocoon libs) I haven't tried this approach, but am thinking of the $CATALINA_BASE variable. A single Tomcat distribution can be multiply instanciated with different $CATALINA_BASE environments, each pointing to a Cocoon instance with its own webapp. I wonder whether such an approach could avoid the structural memory-related problems of approach [2], or will the same issues apply? On the other hand, this approach would complicate management of the Apache http frontend, as it will require the AJP connectors of the different Tomcat instances to be listening at different ports. Hence, Apache's worker configuration has to be updated and reloaded whenever a new webapp (in its own Tomcat instance) is added. And there seems no way to reload worker.properties without restarting the entire Apache http server. Is there perhaps another / more dynamic way of 'modularizing' multiple Tomcat-served webapps, or can one of these scenarios be refined? Any thoughts, suggestions, advice much appreciated. Ron

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