Trying to understand message size
I sent a 23Mb file containing several PDFS
This sent a 33Mb file
24186474 + (all other bits 24513 inc logo, text & message)
Mime size 33130371
I'm trying understand why !...
bhrt60 wrote:
>
> I sent a 23Mb file containing several PDFS
>
> This sent a 33Mb file
>
> 24186474 + (all other bits 24513 inc logo, text & message)
>
> Mime size 33130371
>
> I'm trying understand why !...
That's how MIME works. With the encoding, attachments increase in size
by roughly 33%. This is true regardless of the e-mail platform.
As a side note, this also then impacts setting attachment size limits.
Taking your example, a limit of 30 MB would actually have blocked the
message even though the attachment was only 23 MB because with the MIME
encoding it was actually 33 MB.
Your world is on the move. http://www.novell.com/mobility/
We know what your world looks like. http://www.novell.com/yourworld/
Similar Messages
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[SOLVED] Trying to understand the "size on disk" concept
Hi all,
I was trying to understand the difference between "size" and "size on disk".
A google search gave plenty of results and I thought I got a clear idea about
it.. All data is stored in small chunks of a fixed size depending on the
filesystem and the last chunk is going to have some wasted space which
will *have* to be allocated.. Thus the extra space on disk.
However I'm still confused.. When I look at my home folder, the size on disk
is more than 320 GB, where as my partition is actually less than 80 GB, so
I guess I'm missing something.. Could somebody explain to me what does
320 GB of 'size on disk' means?
Thanks a lot in advance..
Last edited by geo909 (2011-12-15 23:17:25)Hi all,
Thank you for your replies.. My file manager is indeed pcman fm and
indeed it seems to be an issue.. In b4data's link the last post reads:
B-Con wrote:
FWIW, I found the problem. (This bug is still persistent in v0.9.9.)
My (new) PCManFM bug report is here: http://sourceforge.net/tracker/index.ph … tid=801864
I submitted a potential patch here: http://sourceforge.net/tracker/?func=de … tid=801866
Bottom line is that the file's block size and block count data from the file's inode wasn't being interpreted and used properly. The bug is in PCManFM, not any dependent libraries. Details are in the bug report.
Since PCManFM is highly used by the Arch community, I figured I should post an update here so that there's some record of it in our community. Hopefully this gets addressed by the developer(s) relatively soon. :-)
I guess that pretty much explains things.. And I think I did understand the 'size on disk' concept
anyway
Thanks again!
Last edited by geo909 (2011-12-15 23:17:10) -
Trying to understand message redelivery
Hi,
I'm trying to understand redelivery.
I'm using JMS to sync user data from our J2EE system with our Lotus Domino system. I want to be sure that in the advent of any failure in this the sync-ing process, a notification is sent to ensure that at least the Notes Domino stuff can be sync-ed manually by an administrator.
So my question is how to be sure to capture and send notification of EVERY failure with the information needed to manually sync if needed?
As I understand it, it's my responsiblity to ensure that I handle all Exceptions in the onMessage() method of our MessageListener implementation - without throwing any new Exceptions. I do this so I'm confident that things like a Notes Session not being instantiated, or a Notes document not being found are handled and notifcation sent. The result is that if an Exception occurs at this level, I handle it and as far as JMS is concerned the message was consumed and got acknowledged. Right?
But what about messages that fail before the MessageListener is reached - presumeably a problem with the JMS provider (we're using WebLogic 6.1). Can I just rely on JMS to redeliver failed messages and not worry about them? Is there a recommended way to test such failure so I can be sure what happens? I tried throwing a RuntimeException in the onMessage() method, but I did not observe any attempts to resend the message and when I browsed the queue it was empty.
So as you can you see, I'm unclear about this! Appreciate and clarifying points!
TerrenceYou can rely on the JMS provider to take care of it's own failures. However, please note that the JMS provider can fail right after you have successfully done your work in onMessage - but before the message acknowledgement happens. This means that in case of failure, you may get the last consumed message again.
Also note that different JMS providers will handle RuntimeException's raised from onMessage differently, so check your vendor's documentation. After a couple of re-tries, your JMS provider might for instance deem that the receiver/subscriber has a problem consuming said message and move the message into an error queue.
- Bjarne. -
Trying to understand daemon message
Hi ,
trying to understand message see in the logging log -
DAEMON-3-SYSTEM_MSG: netsnmp_check_tcp_session_for_user : Cache found for user (username).
ThanksYou can rely on the JMS provider to take care of it's own failures. However, please note that the JMS provider can fail right after you have successfully done your work in onMessage - but before the message acknowledgement happens. This means that in case of failure, you may get the last consumed message again.
Also note that different JMS providers will handle RuntimeException's raised from onMessage differently, so check your vendor's documentation. After a couple of re-tries, your JMS provider might for instance deem that the receiver/subscriber has a problem consuming said message and move the message into an error queue.
- Bjarne. -
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Contact FB or use another browser.
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Trying to understand QT Export's size choices
Hey guys, I'm hoping to see if you guys can shed some light on a little thing - it irks me that I don't know this. It's not expressly about an FCE feature, it's more part of the Quicktime Export module, but I figured you experts here have experience with this:
When I choose *Export-->Using Quicktime Conversion* and bring up the dialog, the Size button brings up a pop-up menu of two groups of frame size choices (see enclosed image):
!http://www.geoffkaiser.com/various/export.jpg!
It would look like there's some redundancy here. So for example, what's the difference if I choose "1920x1080 HD" in the upper half or "HD 1920x1080 16:9" in the lower half ?? Are these two groups different somehow?
Just trying to understand....
thanks!Wow, thank you Martin; that set me off on a google path that seems to have led to the answer.
According to this document from Apple, Quicktime 7.1 introduced the ability to display different 'aperture' settings for showing a movie file. In short, this means that during display, it can crop along the edges of a movie when assuming that the compressor's encoder would produce artifacts out there along the edge. Apparently it can only do this if the movie was encoded with that parameter, hence the extended preset menu in the QT export dialog. The menu's bottom half presets seem to be the ones that add that ability.
This screenshot I took shows two rendered output QT files, both from a 1920x1080 sequence in FCE4. The "Sequence 2.1" used the '1920x1080 HD' preset from the upper half, and "Sequence 2.2" used the 'HD 1280x1080 16:9' preset from the bottom half. I set the two movies to display at the same size, and when bringing up Movie Properties in both and selecting the "Clean" setting under Presentation-->Conform Aperture, the movie from the 'HD 1280x1080 16:9' preset (on the right) becomes cropped (if you look closely). Choosing "Clean" (or any other setting) on the first file (on the left) has no effect.
Soooo, apparently that's it; choosing the presets in the bottom half net you an extra display feature (that can be toggled on or off) when using QuickTime Player 7.1 or higher. Of course there's nothing in the QT Export dialog to tell you this. But Martin I appreciate your efforts in investigating the outputs of each, as it led me to the answer. -
Upgraded to Firefox 5.0.1 yesterday. No, after logging on to firefox, which takes me to my comcast page and when I try to get
my e-mail I get this message "your browser sent a request this server could not understand. Size of request header field exceeds server limit" Then it says something about "cookies" I also tried to connect to other sites and get similar messages. Just to let you know I am not a guru, and 80 years old, but I did not have this problem with the previous version. Question, why are the headers repeated? Could that be the problem???This issue can be caused by corrupted cookies.
Clear the cache and the cookies from sites (e.g. comcast) that cause problems.
"Clear the Cache":
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Activesync message size limits
I am running Exchange 2007 and I understand that the default size limits for activesync is 10MB. I also understand that you can increase the message size limits. What I am trying to find ot is if there is a limit or ceiling for increasing the limit? If
there is no limit what is best practice?Best practice is to leave them alone unless you have a compelling reason not to.
Ed Crowley MVP "There are seldom good technological solutions to behavioral problems." -
Trying to understand Android OS updates delays
This is not another hate mail, it´s more about trying to understand the facts and motives regarding the OS updates (or lack of).
Hopefully this material will arrive at someone from Sony with enough power to do something about it.
Ever since I can remember, Sony has been THE brand for electronics. I can´t remember a TV or VCR in my house that it wasn´t Sony, and they lasted for LOTS of years.
When a couple years ago I finally had the money (and the need) for a Smartphone, i chose the X10 Mini, which is a great little phone from a great brand, but it´s stuck at Android 2.1... which makes it a crippled android nowadays...
It really bothered me the lack of OS updates, so I chose to buy a Galaxy Nexus, but it´s really expensive in my country. So my second option was a Galaxy Ace 2, but they haven´t arrived to my country yet, so I went with my third option: Xperia Sola, knowing beforehand that it´s a great phone, a great brand, but I might get slow OS updates.
I bought it about 10 days ago when I saw they were starting to roll out the updates.
10 days later I still don´t have my update. And not only that, but I don´t see much light at the end of the tunnel...
I found a thread with the SI numbers that were updated, and there were a bunch on Oct 1, another bunch on Oct 4, and one code on Oct 8, and no other update since...
I also read that those who did get the update, were having bugs with the OS, and also found threads from other Xperia models, whose updates began rolling 3 months ago, and there is still people who hasn´t gotten the update...
As a customer, and a owner/CEO of a small company, I have a really hard time understanding how a HUGE company like Sony can be making such mistakes...
I have been thinking objective reasons, and I can only think of one. I know it´s a wild guess, but I´m starting to think that our salvation might be the very thing that means our condemnation: CYANOGENMOD!!!
Think about it: Why would Sony spend more money hiring twice as much programmers, when they can make only one update per phone, and sit down and see how CM releases begin to appear, for all tastes and needs. And... IT´s FREE!!!
Also, if there is a software related problem (way more likely than a hardware problem), then the CM developers take the fall, instead of Sony. And I´m beginning to see custom OS installers that are more user friendly, so it might be something that they take in accout when neglecting OS updates.
If that´s the line Sony is following, it´s a very risky move and it won´t work. Sony Mobile will crash and burn, but it´s still a better business plan that "let´s get lazy and make ULTRA slow updates so we don´t spend a lot of money programming".
If you can´t afford more programmers, stop including so much bells and whistles and make your OS near vanilla. Include a couple of Xperia menus, a custom theme and voila!
The main reason I wanted the Galaxy Nexus is Vanilla OS, which means inmediate OS updates. Sony on the other hand, takes a year or two to release it after its launch. If they release it at all...
Another though... why not stop making that many different phones! Really! There are like 5 Xperia models i can´t tell one from the other... even with specs side by side!
You are trying to make too many phones and you are failing with all of them! (Software and software updates are also part of the phone, one of the most importants...)
I know hiring programmers is expensive, but you are sacrificing one of the most expensive values for a company EVER: Customer credibility! Which as you know better than me, takes years to create.
If Apple had problems with carriers and code aprooving and stuff, they might get away with it, becouse they alone have all the devices. If iOS 6 is delayed a few months, it´s delayed for everyone, and besides Apple fanboys rarely complain about Mac products, but Android is a more independent and educated market.
I´m not saying that Apple users are ignorant, not at all, but I´m pretty sure most iPhone owners don´t even know what processor or how much RAM their phone has. They just "swallow" the Apple Way of Life. (it´s a good phone becouse Apple says so).
The Android user on the other side, because of the fragmentation of the market, has many brands and models to choose from. An Android user about to buy a new phone will most likely go online looking for different models, specs, reviews in webs and forums...etc.
You can´t say "I don´t know how HTC and other companies get their updates so soon, but we take a lot more becouse Google and the Operators must aproove the code.", because there are many other brands that have exactly the same difficulties or more, since they are smaller, and we can SEE online that they are indeed delivering solid and relativly fast updates.
Did we miss something? Does HTC use Witchcraft to get their code aprooved?
My underlying point is this: You are getting lazy... VERY lazy with software programming for your phones, and WE KNOW IT!
It´s not the "difficulties" you claim, becouse every brand has those difficulties.
This isn´t 1999 you know. We are in the information age. If you lie to us and tell us that your phones have the latest OS, I can go online and see that you don´t (Hello!!!). If I see that the company lies to it´s customers, I will stop buying their products. If I´m so dissapointed with how Sony handles OS updates and their customers queries about it, then I want for the first time ever to sell my Cell Phone becouse I´m not happy with it, or the brand behind it.
We also live in the "Here and now" age. You can´t expect your customers to read about new Android releases on news and blogs, and wait YEARS with arms crossed waiting for their update... The world doesn´t work like that. Not anymore at least...
It´s not a matter of how many recources you have, it´s about how you use and balance them. GIVE MORE IMPORTANCE TO SOFTWARE UPDATES! IT´S WAY MORE IMPORTANT THAT YOU THINK! LISTEN TO YOUR CUSTOMERS!!!
You guys are Sony are smart and design great products, but you are not GOD! You are not our wife, no one has sworn alliagence to you.
If you stop giving us good products and start lying to us, we hate you and stop giving you our money. Simple as that.
My sola is beatiful, I love the design, the screen, the hardware... but it hasn´t been updated yet to 4.0, not to mention 4.1, which REALLY is the latest version... so stop advertising that your phones have the latest Android OS, unless you want angry customers switching to other companies, which you are getting.
I also read some stories that Androind 4.0 was announced for the Xperia PLAY, and then it was called off... Do you have any idea how pissed I would be and ripped off I would be if I bought my phone based in that information and then you say it won´t be available?
Well, actually right now my possition is worse, since you SAY you will update my phone, but you don´t say when, and I read online about people still not getting their updates months after the rollout started, so I´m in the limbo right now...
As a company, one of the worse things you can do is calling your customers stupid, and when I see the answers you give in this forum, then I feel insulted. I feel like they are talking to an idiot or ignorant person with the so called "diplomatic" answers, which are basicly empty excuses for not doing your job right.
You gave us the frikking CDs, DVDs and Blu-Rays!!! Don´t tell us you can´t tweak an already built OS in a year!
I really hope you change their OS update policies really soon, before you lose the already small cellphone market share you have, or at least change your P.R. and C.M. policies towards a more open one.
We all are humans and make mistakes, but we customers really appreciate honesty and truth.
Have an open conversation with your customers! Don´t lie about your shortcomings! Accept then and ask the community to help you solve them, ask them what they biggest problems are, what features are most important to them, how often do they expect updates... LISTEN TO THEM!!
"Succes is a meneace. It tricks smart people into thinking they can´t lose."
Ps: Nothing personal with the mods from this forum, I´m not killing the messenger, I know that you can ONLY give the info you are allowed to give, and even if you wanted, you probably don´t know the answers yourself, since you work in the Communications department, not Developement or anything technical, and if you can't give any given info, then they probably won´t give it to you either... My message is to the company as a whole. I just hope you will be a good messenger and give this to whoever needs to read it.My bad, it´s closer to 40 the number of phones released hehe
I know it´s all about money, and I know Sony is obligated to neglect users who haven´t given them money after an x ammount of time. However, it´s not a matter of making the phones obsolete earlier, so the users want to buy a new phone faster and therefore getting more money.
A person will buy a new phone when he/she has the money to do so and wants to do so.
It´s not a matter of WHEN. It´s a matter of WHAT.
The question is not "When will that user buy a new phone?", but rather "When that user buys a new phone, whenever that is, what phone will it be?"
I have a love/hate relationship with Apple. I would never use a iPhone. I would love having any Mac, if someone gives it to me, but I would never spend my harn earned dollars on such an overpriced piece of hardware over general principals.
However, i do recognice that Steve Jobs was a business genius. Weather you like or love his ideas and methods, he turned a garage project into the biggest company in the world, with a market value higher than Exxon with 1/3 of it´s assets.
Apple is a money making machine, and that is where the "hate" part of my relationship comes from.
However, it surprised me a lot to see that they released iOS 6 for the iPhone 3GS, released in 2008!
That get´s you thinking, that inside all that "SELL NOW" culture Apple is, they also support their older devices that people bought years ago but can't buy a new phone now. However, when they can do it, it will surely be another iPhone. Because they FEEL that the company listens and cares for them.
Also if you jump from iOS 6 on the 3 GS to a brand new iPhone 5, the transition will be virtually non-existant, except for Siri and a couple of features.
However jumping from Android 1.5 or 2.1 to Jelly Bean, might not be so easy on some users, making them more likely to give iPhone a shot.
Since they have to adapt to another phone anyway, they might as well try the apple...
And for old users, it gives people a sense of continuity and care about the user. Otherwise we feel like being kicked out of a restaurant right after we payed the bill. -
Trying to understand, being prompted the file compression rules on saving, or not
Hello,
I'm trying to understand something, could I ask for your help, please ?
After working on a jpg file, when I want to save it, still as jpg, with my Photoshop CS5,
- sometimes photoshop will just save the picture, and it's done
- sometimes photoshop will show me the compression dialog, "JPEG Options", in which I can choose the compression ratio, the format options (baseline, baseline optimized, progressive), and have an estimation of the total file size
While not being prompted any dialog is simpler, and I'll then simply assume Photoshop decides to retain the current image's compression and format rules, I must say I like to be in control, and I'd like to know under what form the file is being saved without having to resort to the much more complex "Save For Web" menu.
Please, would you know WHAT "triggers" the appearance of the JPEG Options when we close/save a jpeg file, in photoshop ? What makes this menu not to appear, what makes it appear ?
If there are trivial file operations/changes/filters that necessarily trigger its appearance when we want to save, something like that ? I've tried a variety of these, but I still can't figure it out, sometimes it shows in the end, and sometimes it doesn't.
Thank you very much if you can help me
Kind regards,
Oliver@ c.pfaffenbichler
These are images from various sources, not just one.
I'm deliberately excluding Save For Web, this completely re-processes everything.
My purpose, precisely, is to know when photoshop takes the decision to retain the image's "rules", and when photoshop decides to pose us the question, how do we want it saved.
Simply taking a jpeg image, doing stuff on it, and hitting control-w to close the window, and seeing if it will be an
- «OK, sure, do you want to save ? You clicked OK to confirm you wanted the changes saved ? Good, now it's closed» or a
- «please sir, how would you like your image saved, tell me the compression ratio and the format options, thank you» -
Trying to understand the code???
Hi,
I am trying to understand the following bit of code, currently the code puts each catalogue into a different row of the table but i want each catalogue to be put in the next column
(so the catalogues appear across the page on the actual web page). The following code is for the page in question but im not sure how much is relevant so i will paste it all and highlight the section i think is relevant:
<html>
<%-- DECLARATIONS --%>
<%@ page import="se.ibs.ns.cf.*, se.ibs.ccf.*, se.ibs.bap.*, se.ibs.bap.util.*, se.ibs.bap.web.*, java.util.*, se.ibs.ns.icat.*, se.ibs.bap.asw.cf.*, java.lang.*" %>
<% ItemCatalogueBean bean = (ItemCatalogueBean)SessionHelper.getSessionObject("ItemCatalogueBean",session);
String resourcePath = bean.getResourcePath(null);
String title = "Product catalogue";
String languageCode = bean.getLanguageCode();
%>
<%@ include file="FuncHead.jsp" %>
<BODY class="IBSBody" onLoad="loaded = true;">
<form method="POST" action=<%= bean.getEncodedServlet("se.ibs.ns.icat.ItemCatalogueSearchServlet", response) %> name="basicForm">
<%@ include file="FuncSubmitScript.jsp" %>
<%@ include file="FuncPageBegin.jsp" %>
<div align="center">
<table border="0" width="895">
<tr>
<td align="left" width="502">
<div align="left">
<table border="0" width="500">
<tr>
<td class="IBSPageTitleText" align="left" valign="top" width="238">
<%@ include file="FuncPageTitle.jsp" %>
<%@ include file="FuncPageTitleImage.jsp" %>
<br>
On this page you can see the product catalogues. Click on one of the
links to go to the next level. Alternatively you can click the <b>Search
catalogue</b> button to find the products of interest.</td>
<td width="248" valign="bottom">
<div align="left"><%@ include file="FuncShoppingCart.jsp" %></div>
</td>
</tr>
</table>
</div></td></tr></table></div>
<input type="submit" value="Search catalogue" name="ACTION_NONE" onClick="submitButtonOnce(this); return false">
<hr>
<%-- REPEAT CATALOGUES --%>
<div align="left">
<table border="0" width="100%">
<% Vector catalogues = bean.getItemCatalogues();
int cataloguesSize = catalogues.size();
for (int i = 0; i < cataloguesSize; i++){
BAPItemCatalogue cat = (BAPItemCatalogue) catalogues.elementAt(i); %>
<%-- LINK AND MARK AS NEW --%>
<tr>
<td width="23%"><a class="IBSMenuLink" href="link" onClick="javascript:invokeLink('<%= bean.getEncodedServlet("se.ibs.ns.icat.ItemCatalogueCategoryServlet", response) %>?CODE=<%= ToolBox.encodeURLParameter(cat.getCode())%>'); return false">
<%= cat.getDescription(languageCode) %></a>
</td>
<td width="40%" align="right">
<% if (cat.isNew()) {%>
<img border=0 src="<%= resourcePath %>new.gif">
<% } %>
</td>
</tr>
<%-- CATALOGUES IMAGE AND INTERNET INFORMATION (text, multimedia objects,downloads, links...) --%>
<tr>
<td width="23%" valign="top" align="left">
<% if (bean.isAdvanced(cat) && bean.hasMultimediaImage(cat)) { %>
<a href="link" onClick="javascript:invokeLink('<%= bean.getEncodedServlet("se.ibs.ns.icat.ItemCatalogueCategoryServlet", response) %>?CODE=<%= ToolBox.encodeURLParameter(cat.getCode())%>'); return false">
<img border="0" src="<%= bean.getMultimediaImage(cat) %>"></a>
<% } else {%>
<img border="0" src="<%= resourcePath %>Catalog.gif">
<% } %>
</td>
<td class="IBSTextNormal" width="40%" valign="top">
<%= bean.getWebText(cat) %>
</td>
</tr>
<tr>
<td width="23%">
</td>
<td width="40%">
<% Vector mmLinks = bean.getMultimediaLinks(cat);
int mmLinksSize = mmLinks.size();
for (int ml=0; ml<mmLinksSize; ml++){
BAPCodeAndDescription mmLink = (BAPCodeAndDescription)mmLinks.elementAt(ml); %>
<a class="IBSLink" href="<%= mmLink.getCode() %>" target="_blank"><%= mmLink.getDescription() %></a><br>
<% } %>
<% Vector webLinks = bean.getWebLinks(cat);
int webLinksSize = webLinks.size();
for (int wl=0; wl<webLinksSize; wl++){
BAPCodeAndDescription webLink = (BAPCodeAndDescription)webLinks.elementAt(wl); %>
<a class="IBSLink" href="<%= webLink.getCode() %>" target="_blank"><%= webLink.getDescription() %></a><br>
<% } %>
</td>
</tr>
<%}%>
</table>
</div>
<%@ include file="FuncPageLinks.jsp" %>
<%@ include file="FuncPageEnd.jsp" %>
</form>
</body>
</html>i hope someone could help me to understand this,
thank you for your helpYou've probably already seen these, but here are a couple of links that may help.
http://help.adobe.com/en_US/FlashPlatform//reference/actionscript/3/operators.html#array_a ccess
http://www.adobe.com/livedocs/flash/9.0/ActionScriptLangRefV3/Array.html
What's basically happening is that the "for" loop goes through each item in the array. Don't be confused by the fact that two of the items in the array are Strings and one is an Integer - variable i being a String has nothing to do with the data type of the elements in the array.
The following code:
private function createLabels():void
var myArray:Array = ['one', 'two', 3];
for(var i:String in myArray)
trace("i = " + i);
trace(myArray[i]);
gives the following results:
i = 0
one
i = 1
two
i = 2
3
From that we can see that the "for" loop is assigning the index number of each array element, not the actual array element ('one', 'two', or 3) to the variable i. So calling myArray[i] is the same as calling myArray[0] the first time through the loop. This type of "for" loop is just a shorter way of doing the following, which produces exactly the same results:
private function createLabels():void
var myArray:Array = ['one', 'two', 3];
for(var i:int = 0; n < myArray.length; i++)
trace("i = " + i);
trace(myArray[i]);
Hope that helps.
Cheers! -
Trying to understand the basic concept of object oriented programming.
I am trying to understand the basic concept of object oriented programming.
Object - a region of storage that define is defined by both state/behavior.
( An object is the actual thing that behavior affects.)
State - Represented by a set of variables and the values they contain.
(Is the location or movement or action that is the goal that the behavior is trying to accomplish.)
Variables- (What does this mean?)
Value - (What does this mean?)
Behavior - Represented by a set of methods and the logic they implement.
( A set of methods that is built up to tell's the how object to change it's state. )
Methods - A procedure that is executed when an object receives a message.
( A very basic comand.For example the method tells the object to move up, another method tells the method to go left. Thus making the object move up/left that combination is the behavior.)
Class - A template from which the objects are created.
( I am very confused on what classes are.)
- The definitions of the words I obtained from the "Osborne Teach Yourself Java". The () statements are how I interperate the Mechanisms (I do not know if Thats what you call them.) interact with each other. I understand my interpretation may be horribly wrong. I will incredibly appreciate all the support I may get from you.
Thank youObject oriented programming is a replacement for the older idea of procedural programming (you can research procedural programming in google). As I understand it, in procedural programming, you have a step by step set of function calls to accomplish some task. Each function receives a data structure, manipulates it, and passes it to the next function. The problem with this is that each function preforms some action for the overall task and can't easily be reused by some other task. Its also harder to read the flow of what is happening with raw data structures flying all over the place.
In object oriented programming, an object calls a function of another object and receives back, not a data structure, but another object. Objects contain a data structure that can only be accessed by its functions. An object is not so much a sub component of a bigger task, as it is a service that any other task can use for any purpose. Also, when you pass an object to the caller, the caller can ask questions about the data structure via its functions. The developer doesnt have to know what the previous function did to the data by reading up on any documentation, or having to reverse engineer the code.
I suggest the best way of learning this is to code something like a library object.
A library object contains a collection of book objects
A book object contains a collection of chapter objects
A chapter object contains a collection of paragraph objects
A paragraph object contains a collection of sentence objects
A sentence object contains a collection of word objects.
Add functions to each object to provide a service
Example: A library object should have a:
public void addBook(Book book)
public Book getBook(String title)
public boolean isBookInLibrary(String title)
The key is to add functions to provide a service to anyone who uses your object(s)
For example, what functions (service) should a paragraph object provide?
It shouldn't provide a function that tells how many words there are in a sentence. That function belongs to a sentence object.
Lets say you want to add a new chapter to a book. The task is easy to read
if you write your objects well:
Sentence sentence1=new Sentence("It was a dark and stormy night");
Sentence sentence2=new Sentence("Suddenly, a shot ran out");
Paragraph paragraph=new Paragraph();
paragraph.addSentence(sentence1);
paragraph.addSentence(sentence2);
Paragraphs paragraphs=new Paragraphs();
paragraphs.addParagraph(paragraph);
Library library= new Library();
library.getBook("My Novel").addChapter("Chapter 1",paragraphs).
Now, lets say you want to have a word count for the entire book.
The book should ask each chapter how many words it contains.
Each chapter should ask its paragraphs, each paragraph should ask
its sentences. The total of words should ripple up and be tallied at each
stage until it reaches the book. The book can then report the total.
Only the sentence object actually counts words. The other objects just tallies the counts.
Now, where would you assign a librarian? What object(s) and functions would you provide?
If written well, the project is easily extensible. -
Hi all,
I have a question regarding the message size for the mapping:
What is the size limit for messages when using the XSLT mapping methods?
What are the maximum message sizes (if any) for the other methods like ABAP mapping, Graphical mapping, JAVA Mapping and XSLT Mapping (JAVA) ?
Looking foward to hear from you:)
Regards
MarkusHi Markus,
Just go through the belwo thread which talks about the same.
Wat is the maximu size of data XI can handle
Also go through the mapping performance which helps u in understanding the performance as well.
Mapping Performance:
/people/udo.martens/blog/2006/08/23/comparing-performance-of-mapping-programs
Thnx
Chirag
Reward points if it helps. -
Trying to understand Transferable
Hello, I'm trying to write a drag-and-drop file uploading applet and am thus trying to understand the Transferable interface. I found some very clear source but no clear explanation of one point. I'm sure this information is commonly available; I apologize for being unable to find it and would appreciate a link.
Running this code :
public boolean importData(JComponent src, Transferable transferable) {
println("Receiving data from " + src);
println("Transferable object is: " + transferable);
println("Valid data flavors: ");
DataFlavor[] flavors = transferable.getTransferDataFlavors();
DataFlavor listFlavor = null;
DataFlavor objectFlavor = null;
DataFlavor readerFlavor = null;
int lastFlavor = flavors.length - 1;
// Check the flavors and see if we find one we like.
// If we do, save it.
for (int f = 0; f <= lastFlavor; f++) {
println(" " + flavors[f]);
if (flavors[f].isFlavorJavaFileListType()) {
listFlavor = flavors[f];
if (flavors[f].isFlavorSerializedObjectType()) {
objectFlavor = flavors[f];
if (flavors[f].isRepresentationClassReader()) {
readerFlavor = flavors[f];
// Ok, now try to display the content of the drop.
try {
DataFlavor bestTextFlavor = DataFlavor.selectBestTextFlavor(flavors);
BufferedReader br = null;
String line = null;
if (bestTextFlavor != null) {
println("Best text flavor: " + bestTextFlavor.getMimeType());
println("Content:");
Reader r = bestTextFlavor.getReaderForText(transferable);
br = new BufferedReader(r);
line = br.readLine();
while (line != null) {
println(line);
line = br.readLine();
br.close();
else if (listFlavor != null) {
java.util.List list = (java.util.List)transferable.getTransferData(listFlavor);
println( list + " Size " + list.size());
else if (objectFlavor != null) {
println("Data is a java object:\n" + transferable.getTransferData(objectFlavor));
else if (readerFlavor != null) {
println("Data is an InputStream:");
br = new BufferedReader((Reader)transferable.getTransferData(readerFlavor));
line = br.readLine();
while (line != null) {
println(line);
br.close();
else {
// Don't know this flavor type yet...
println("No text representation to show.");
println("\n\n");
catch (Exception e) {
println("Caught exception decoding transfer:");
println(e);
return false;
return true;
which you'll agree is very clear, returns me a List of filepaths when I drop files on it. Perhaps naively, I was hoping to get the data itself.
Obviously I can go the route of messing with security settings to allow the applet to open files (eeew) but I'm hoping the actual data is available from Transferable and I'm simply not understanding how to do it.
Thanks for any tips.And don't forget to check this link:
http://www.javaworld.com/jw-03-1999/dragndrop/jw-03-dragndrop.zip
I think with few modifications you can get what you want. -
Trying to understand a WS-I validation failure
I'm trying to understand the following WS-I validation failure message. I'm sure I'm making a basic mistake but I can't find an example of the use case where an xsd is imported. Can someone point out my error?
Thanks,
Bret
Validation failure:
Result failed:
Failure Message: A QName reference that is referring to a schema component, uses a namespace not defined in the targetNamespace attribute on the xs:schema element, or in the namespace attribute on an xs:import element within the xs:schema element.Failure Detail Message:
{http://Messages.xsd}SigReplyMessage,
{http://schemas.xmlsoap.org/wsdl/}string,
{http://Messages.xsd}SigRequestMessage
Element Location: lineNumber=8
My wsdl looks like this:
<definitions targetNamespace="urn:S3SignatureGenerator"
xmlns="http://schemas.xmlsoap.org/wsdl/"
xmlns:tns="urn:S3SignatureGenerator"
xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/"
xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
xmlns:messages="http://Messages.xsd">
<types>
<xsd:schema>
<xsd:import id="Messages.xsd"
schemaLocation="../../XSDDocument/Messages.xsd"
namespace="http://Messages.xsd"/>
</xsd:schema>
</types>
<message name="ReturnSignature">
<part name="SigAndExp" type="messages:SigReplyMessage"/>
</message>
<message name="RequestSignature">
<part name="Keys" type="messages:SigRequestMessage"/>
</message>
<portType name="SigGenerator">
<operation name="GetSignature">
<input message="tns:RequestSignature"/>
<output message="tns:ReturnSignature"/>
<fault name="sigFault" message="tns:SigFault"/>
</operation>
</portType>
<message name="SigFault">
<part name="faultMessage" element="string"/>
</message>
<binding name="SigGenSoapHttp" type="tns:SigGenerator">
<soap:binding style="document"
transport="http://schemas.xmlsoap.org/soap/http"/>
<operation name="GetSignature">
<soap:operation soapAction="urn:S3SignatureGenerator/GetSignature"/>
<input>
<soap:body use="literal" parts="SecretKey PublicKey"/>
</input>
<output>
<soap:body use="literal" parts="Signature"/>
</output>
<fault name="sigFault">
<soap:body use="literal" parts="SecretKey PublicKey"/>
</fault>
</operation>
</binding>
<service name="SignatureGenerationService">
<port name="SigGenSoapHttpPort" binding="tns:SigGenSoapHttp">
<soap:address location="tbd"/>
</port>
</service>
</definitions>
Messages.xsd looks like this:
<?xml version="1.0" encoding="windows-1252" ?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns="http://www.bret.org/S3test/Messages"
targetNamespace="http://www.bret.org/S3test/Messages"
elementFormDefault="qualified">
<xsd:complexType name="sigRequestMessage">
<xsd:sequence>
<xsd:element name="publicKey" type="xsd:string"/>
<xsd:element name="privateKey" type="xsd:string"/>
</xsd:sequence>
</xsd:complexType>
<xsd:complexType name="sigReplyMessage">
<xsd:sequence>
<xsd:element name="Signature" type="xsd:string"/>
<xsd:element name="expiration" type="xsd:dateTime"/>
</xsd:sequence>
</xsd:complexType>
</xsd:schema>Hi Bret,
Sorry it's taken me a bit of time to respond, but please find below a run-down of the WS-I related problems I spotted in your WSDL document. The first few are related to the import error you saw, and there's a few others that I'll also discuss. Apologies in advance if you've already spotted and corrected those.
I'll use line numbering based on the formatting of the WSDL and XSD that you supplied.
BP2417 (the one you asked about)
The line number in the error is a red herring. There are two problems here:
- WSDL document, line 29: You're using the XSD type string unqualified - it should be xsd:string.
- WSDL document, lines 8 and 13; schema, lines 3 and 4: The namespaces you're using don't match. Either change the namespaces in the schema to be http://Messages.xsd, or change the namespaces in the WSDL to http://www.bret.org/S3test/Messages.
BP2202
You should declare UTF-8 or UTF-16 encoding when creating WSDL or schema documents. The easiest way to do this is to go to Tools|Preferences, and set JDeveloper's default encoding to either UTF-8 or UTF-16.
BP2032
WSDL document, line 26 and 43: The name attribute of the fault should read SigFault, not sigFault, as WSDL is case-sensitive.
WSDL document, line 44: You should use a soap:fault element, not a soap:body element, to bind a fault, thus:
<soap:fault name="SigFault" use="literal"/>
BP2012
WSDL document, lines 17 and 20: Message parts in a document-bound service like this one should reference XSD elements and not complexTypes. What you need to do is define two elements in your messages schema whose types are SigReplyMessage and SigRequestMessage respectively, and then reference those elements from the WSDL.
WSDL document, line 38: The value of the parts attribute should be Keys to match the name of the part child of the RequestSignature.
WSDL document, line 41: The value of the parts attribute should be SigAndExp to match the name of the part child of the ReturnSignature.
WSDL document, line 44: The value of the parts attribute should be faultMessage to match the name of the part child of the SigFault.
BP2115
WSDL document, lines 17 and 20: The names of the elements should be sigReplyMessage and sigRequestMessage and not SigReplyMessage and SigRequestMessage, again because WSDL is case-sensitive.
WSDL document, line 30: The element attribute of the part references xsd:string, which is not an element but a complexType. You'll need to add an element declaration to your schema, which is of type xsd:string.
I've included corrected versions of your WSDL and schema below, I hope this helps. I also note you've posted a few other messages related to WS-I and WSDL, I hope I've managed to cover those in this message too.
Regards,
Alan.
WSDL:
<?xml version="1.0" encoding="UTF-8" ?>
<definitions targetNamespace="urn:S3SignatureGenerator"
xmlns="http://schemas.xmlsoap.org/wsdl/"
xmlns:tns="urn:S3SignatureGenerator"
xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/"
xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
xmlns:messages="http://Messages.xsd">
<types>
<xsd:schema>
<xsd:import id="Messages.xsd"
schemaLocation="Messages.xsd"
namespace="http://Messages.xsd"/>
</xsd:schema>
</types>
<message name="ReturnSignature">
<part name="SigAndExp" element="messages:sigReplyMessage"/>
</message>
<message name="RequestSignature">
<part name="Keys" element="messages:sigRequestMessage"/>
</message>
<message name="SigFault">
<part name="faultMessage" element="messages:faultMessage"/>
</message>
<portType name="SigGenerator">
<operation name="GetSignature">
<input message="tns:RequestSignature"/>
<output message="tns:ReturnSignature"/>
<fault name="SigFault" message="tns:SigFault"/>
</operation>
</portType>
<binding name="SigGenSoapHttp" type="tns:SigGenerator">
<soap:binding style="document"
transport="http://schemas.xmlsoap.org/soap/http"/>
<operation name="GetSignature">
<soap:operation soapAction="urn:S3SignatureGenerator/GetSignature"/>
<input>
<soap:body use="literal" parts="Keys"/>
</input>
<output>
<soap:body use="literal" parts="SigAndExp"/>
</output>
<fault name="SigFault">
<soap:fault name="SigFault" use="literal"/>
</fault>
</operation>
</binding>
<service name="SignatureGenerationService">
<port name="SigGenSoapHttpPort" binding="tns:SigGenSoapHttp">
<soap:address location="tbd"/>
</port>
</service>
</definitions>
Schema:
<?xml version="1.0" encoding="UTF-8" ?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns="http://Messages.xsd"
targetNamespace="http://Messages.xsd"
elementFormDefault="qualified">
<xsd:element name="sigRequestMessage">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="publicKey" type="xsd:string"/>
<xsd:element name="privateKey" type="xsd:string"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:element name="sigReplyMessage">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="Signature" type="xsd:string"/>
<xsd:element name="expiration" type="xsd:dateTime"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:element name="faultMessage" type="xsd:string"/>
</xsd:schema>
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