Trying to understand the basics of architecture
Hi there, that's my first post here.
I began working with Oracle SGBD, started using Oracle 11g, then I have installed it on a computer and created sucessufully an user/database, the question is: I don't understand clearly
yet the difference between tablesapce, schema, instance , database/user (is an user a database and vice-versa) and other question is about view, trigger, procedure and profile?
Could you help me on understanding both questions?
André AS.
user13002323 wrote:
hmm, very good, liked it... thanks for sharing the reference EdStevens.Good, but you haven't had time to do more than scan the TOC. Go back and start reading
>
I have read some tips now that helped me out too, let me try saying the concepts I've got and being more specific on questioning:
1 - When I created the user, it also meant I've created the database by creating the user, I wanted to say, on Oracle user and database are the same?
Absolutely untrue. Sounds like you are trying to apply SQL Server concepts to Oracle. The very term 'database' means different concepts between the two products.
In oracle, the 'database' is the all-encompassing structure. EVERYTHING else exists inside the database - including users. Go back and
2 - The Oracle's instance is a scope where someone could find the schemas that hierarchically are the databases linked to a tablespace (directory to record data)?The instance is the memory space and processes that operate the database.
>
3 - Every user/database I generate will use some profile? Every user you created will have a profile. Creating a user is NOT the same as creating a database.
>
4 - What's the difference between procedure, trigger and view?
What is the difference between a car, a truck, and a duck?
A procedure is a named and stored set of sql and plsql statements, that can be executed on-demand by referencing the name of the procedure.
A trigger is a special kind of procedure, that executes when a defined event occurs.
A view is a pre-defined and name query that can be SELECTed as if it were a table.
hope that's clearer.
Please spend some time actually reading the Concepts Guide, and specifically looking for the answers to your questions. We don't mind answering questions -- that's why we're here -- but we expect you to do some reading and thinking on your own.
=================================================
Learning how to look things up in the documentation is time well spent investing in your career. To that end, you should drop everything else you are doing and do the following:
Go to tahiti.oracle.com.
Drill down to your product and version.
<b><i><u>BOOKMARK THAT LOCATION</u></i></b>
Spend a few minutes just getting familiar with what is available here. Take special note of the "books" and "search" tabs. Under the "books" tab you will find the complete documentation library.
Spend a few minutes just getting familiar with what <b><i><u>kind</u></i></b> of documentation is available there by simply browsing the titles under the "Books" tab.
Open the Reference Manual and spend a few minutes looking through the table of contents to get familiar with what <b><i><u>kind</u></i></b> of information is available there.
Do the same with the SQL Reference Manual.
Do the same with the Utilities manual.
You don't have to read the above in depth. They are <b><i><u>reference</b></i></u> manuals. Just get familiar with <b><i><u>what</b></i></u> is there to <b><i><u>be</b></i></u> referenced. Ninety percent of the questions asked on this forum can be answered in less than 5 minutes by simply searching one of the above manuals.
Then set yourself a plan to dig deeper.
- Read a chapter a day from the Concepts Manual.
- Take a look in your alert log. One of the first things listed at startup is the initialization parms with non-default values. Read up on each one of them (listed in your alert log) in the Reference Manual.
- Take a look at your listener.ora, tnsnames.ora, and sqlnet.ora files. Go to the Network Administrators manual and read up on everything you see in those files.
- When you have finished reading the Concepts Manual, do it again.
Give a man a fish and he eats for a day. Teach a man to fish and he eats for a lifetime.
=================================
Edited by: user13002323 on 10/01/2013 05:02
Similar Messages
-
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. -
Trying to understand the basics of iTunes
It may sound stupid, but after having read various manuals, guides, forum discussions, I still don't understand the basics of iTunes - is a 64 yo maybe too old for this?
Yes, I can fill my iPod with music and sync it with my laptop. But to manage everything well, I need answers on these questions:
- After I add my laptop folder MY MUSIC to the iTunes library, does iTunes make COPIES of all my files in that folder? Or just links? If copies, where are they stored?
- What does the term synchronisation include? Does it mean: the music in the iTunes library will be identical to the music in the iPod? Or:
- Will all changes in that folder automatically lead to updates of my iTunes library? Changes such as adding/removing files, changing filenames, modifying files with audio editors. If the contents are not automatically updated/synchronised, is there a manual way to do that?
- And vice versa: if I delete a song in iTunes, does that effect the source file in MY MUSIC? If not, is there an option to delete the song there as well?
- Could I theoretically delete the whole contents of MY MUSIC folder after all files have been added to iTunes? Is it recommended to do so? Or should I keep the 'originals'?
- The same goes for cd's: After I (automatically or manually) added the contents of a cd to iTunes, could I theoretically throw or give it away?
- There is the option to find doubles. If I want to delete one or more of them, how do I know which file I delete. I mean this: if song X is part of album A but also of a bunch of single files, then I would like to keep the album folder complete and just delete the 'single' occurrence. But how to determine that?
- Changing filenames in MY MUSIC often has no effect on the filename as displayed in iTunes. Why not?
- I think that is all for now. Maybe later I still come across more basic questions.
Could anyone give me the basic answers? And if possible in language for dummies, not in nerd slang, please
Thanks!
WimYogya
Dutchman in Indonesia*After I add my laptop folder MY MUSIC to the iTunes library, does iTunes make COPIES of all my files in that folder? Or just links? If copies, where are they stored?*
That depends. Open iTunes and go to Edit>Preferences>Advanced. If "Copy files to iTunes Music Folder" is checked then iTunes is "copying" the files into the iTunes Music folder which is inside the iTunes folder. The library is then referenced to the location of the copy ( in this case you can if you wish delete the original). If it's unchecked it is adding the songs to to your iTunes library but referencing the location that the file is in without making a copy.
*Will all changes in that folder automatically lead to updates of my iTunes library? Changes such as adding/removing files, changing filenames, modifying files with audio editors.*
No, iTunes doesn't support folder watching so all changes have to be made within iTunes.
*If the contents are not automatically updated/synchronised, is there a manual way to do that?*
File>Add File to Library: Adding Content to iTunes
*if I delete a song in iTunes, does that effect the source file in MY MUSIC? If not, is there an option to delete the song there as well?*
iTunes will delete songs from the library and move them to Trash (Recycle Bin) only if they are in the iTunes Music folder. (iTunes will ask if you want to trash the file if this is the case, it doesn't trash it automatically). If your songs are kept outside of this folder then deleting only removes the reference to the song from the library and you have to go to the folder they are located in to trash the file itself.
*Could I theoretically delete the whole contents of MY MUSIC folder after all files have been added to iTunes? Is it recommended to do so? Or should I keep the 'originals'?*
You could only delete the songs from the original folder if you have set the preference above to copy the files to the iTunes Music folder, if not you have to keep them where they are. Regardless of where the files are stored you would be well advised to back them up in case you have problems with your computer. You might also find this article interesting/useful: iLounge - The Complete Guide to Backing Up your iTunes Library
*The same goes for cd's: After I (automatically or manually) added the contents of a cd to iTunes, could I theoretically throw or give it away?*
You don't own the copyright of the song, basically you own the license to play it. if you make a copy and then sell/give the CD away you are essentially sharing the files illegally.
*There is the option to find doubles. If I want to delete one or more of them, how do I know which file I delete. I mean this*
You would have to check the location of the file manually to be sure which one you wanted to keep.
*Changing filenames in MY MUSIC often has no effect on the filename as displayed in iTunes*
Because iTunes doesn't support folder watching, changes need to be made within iTunes. Changing the name of a file outside of iTunes can cause iTunes to lose the location of the file since it is referenced under the name it had when you added it. -
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! -
I'm trying to understand the difference between Photoshop Elements and Lightroom software.
Does one have things the other does not?
Hi,
Lightroom is to manage photos and produce derivative images without ever modifying an original file. Its processing functionality has a narrow feature-set covering the most common needs of professional photographers whereas Elements is a simpler yet powerful photo manipulation tool. Elements is designed to satisfy the needs of photo enthusiasts who like to manipulate images.
You can also go through the thread to understand the basic difference between PSE and Lightroom.
Check if this helps.
Thanks,
Swapnil -
I am trying to understand the licensing procedures for using tabKiller for 3.5.7 firefox. Who should I contact for this? I do not have the customer service phone number for Firefox
Tab Killer is not created by Mozilla, it is created by a private individual who has made it available at no cost for other people to use.
-
[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 the sound system
Here's my problem. My mic didn't work (neither the front mic nor the line-in in the rear), so after some research and trial and error I found that if I do
modprobe soundcore
my mic works on both the jacks
But here's where my confusion lies. This is the output of lsmod |grep snd before probing explicitly for soundcore
[inxs ~ ]$ lsmod |grep snd
snd_hda_codec_analog 78696 1
snd_hda_intel 22122 1
snd_hda_codec 77927 2 snd_hda_codec_analog,snd_hda_intel
snd_hwdep 6325 1 snd_hda_codec
snd_pcm_oss 38818 0
snd_pcm 73856 3 snd_hda_intel,snd_hda_codec,snd_pcm_oss
snd_timer 19416 1 snd_pcm
snd_page_alloc 7121 2 snd_hda_intel,snd_pcm
snd_mixer_oss 15275 2 snd_pcm_oss
snd 57786 8 snd_hda_codec_analog,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm_oss,snd_pcm,snd_timer,snd_mixer_oss
soundcore 6146 2 snd
[inxs ~ ]$
So as you can see, soundcore's already loaded, so why do I have to explicitly load it again to get the mic to work?
Once I add soundcore to my MODULES array and reboot, the lsmod output is also the same as above.
So my question is -- what does the explicit loading of soundcore do, that is not done by auto-loading of that module?Oh... since your topic is Trying to understand the sound system, that puts you (and me) inside the whole world's population... chuckle. But I thought I'd pass along a document written by probably "The" main ALSA developer that I totally stumbled across just 3 days ago.
Go here:
http://kernel.org/pub/linux/kernel/people/tiwai/docs/
and download the flavor of your choice of the "HD-Audio" document, or simply view it online. It documents the deepest dive into the current ALSA snd_hda_* layers and issues that I've found to date (but still leaves me wanting).
Why that document isn't plastered across the interwebs is beyond me. I only get 11 hits when I search for it... such are the secrets of the ALSA world I guess.
Last edited by pigiron (2011-08-26 18:26:48) -
Trying to Understand the PostSyncCleanup parameter
I've got a problem with running my application on the Australian version of Windows. We have a "test" application built around SQL Server Compact Merge Replication Library (thanks ErikEJ) and that works but our application doesn't.
One of the main differences with our application code is that we do not set the PostSyncCleanup value to anything and the library sets it to 2 per this link:
http blogs.msdn.com/b/sqlblog/archive/2009/04/15/sql-compact-performance-postsynccleanup-to-turn-off-updatestatistics-during-initial-download-of-sql-compact-replication.aspx (put the :// back to get the link)
I'm trying to understand the impact of making that our "production" configuration since we haven't been using it. The description looks harmless enough but I don't really understand what statistics I'm turning off and what the impact
would be and what even the default setting is. Anything that could enlighten me would be appreciated along with a guess as to why that might be causing a problem on the Australian version of Windows would be appreciated.So we've been running with the default value (0) and have not really had any "problems". I haven't done any testing but I'm ok with faster, like everyone would be, but am also a bit risk averse so want to know what exactly I'm turning off.
I also saw this advice from Rob Tiffany:
Use the appropriate x64, x86 or ARM version of SQL Server Compact 3.5 SP2 to take advantage of the
PostSyncCleanup property of the SqlCeReplication object that can reduce the time it takes to perform an initial synchronization. Set the
PostSyncCleanup property equal to 3 where neither
UpdateStats nor CleanByRetention are performed.
Here: http robtiffany.com/microsoft-sql-server-compact-3-5-sp2-has-arrived/
So, is the best advice to use that parameter and set the value to 3 or 2
I don't really know what I'm losing to "not performing" UpdateStats or CleanByRetention and does making that change need I need to do something else on the server or client to "clear out" or "clean up" something that this is
doing. -
Trying to understand the Serialization interface
Im trying to understand the Serialization of objects?
As an example, I create a Library class that implements Serializable, that stores a collection of Book objects
If I am only looking at saving a Library object to file, does the Book class require Serialization also or just the Library?
I have read the API on serialization, no answer there, if it is it's not easy to understand or read into the API...There are some really important things to know about when doing serialization. For example one important thing to know about that not is mentioned here is that your serializable classes must define its own private static final long serialVersionUID because if you not do that will you not be able to deserialize (read in) the data you have saved later if you change anything in your serializable class. It is a bit tricky to manage files to which you have serialized different versions of your class, that is versions where you have added more serializable members to the class after you have serialized files. Well, it is not a problem if you don´t care if you have to type in all your saved data again every time you change anything instead of deserialize it (read it) from your file of course :)
Situations like this may be handled if you define your own (private) writeObject(ObjectOutputStream) and your own readObject(ObjectInputStream) methods in your serializable class but there is a better a lot smarter way to handle this. Use of a serialization proxy! how to use that is described in the excellent book Effective Java 2nd ed. With a serialzation proxy for every serializable version of your class (where a version corresponds to a version of your class with differences in its number of serializable members) may your class deserialize data written from elder versions of your class also. Actually is it first since I read the last chapter of Effective Java that I think I have myself begin to understand serialization well enough and I recommend you to do the same to learn how to use serialization in practice. -
You know you are in trouble when you cannot complete step #2 of a tutorial. The good news is I understand all the AS3 code, I am a programmer by trade.
The tutorial in question is Build a Dynamic Flash Gallery with Slider Controland I am stuck on creating the movies in step 2. I did go through a more basic tutorial on Adobe's web site and know that I can turn a tool, like the rectangler tool, into a Movie Clip. But I don't know exactly how the author got to the screens shown in step 2. Did he create that from the Rectangler Tool or did he do something else?
While I wait an answer to this very basic question, I am going to be going through more tutorials from this page, thanks!
SamYea, I have been going through some more tutorials and the basics are starting to make a lot more sence now, like how to do the gradient, thank you!
I have been able to progress quite far in the original tutorial. I am in Step #11 now. But when I went to step into the code, I ran into a problem that stems from the brevity of step #6. I am getting this error when I try to run the movie:
Description: 1120: Access of undefined property descr.
Source: descr.text = src;
In step six the instructions are:
"Start off with creating a movieclip about the size you want your images to be displayed. Give it a margin of a few pixels and save some space on the bottom for the description text. Add a dynamic text field for the description and give it an instance name of 'descr'."
Based on what I have learned about Flash, I created my own rectangle using the Rectangle Primitive Tool and then created a dynamic text field on the rectangle. Then I selected both things and created a movie clip (F8) of them. It was after the fact I give the dynamic text field the instance name of 'descr'. But it does have a name now.
I have tried to go into the author's source code and look at the dynamic text on his Img movie clip, but I cannot select the dynamic text in his Img movie clip. (Yes, I am going to the Library and double clicking on the Img item.)
There is one of two problems:
1: I did not create my movie clip correctly.
2: I do not have my Img object using the Img.cs file correctly.
I believe it is #1 because I don't think I would get the error if #2 was the issue, for the error is in the file and I would not get the compiler error to begin with, I think
Any help would be appreciated!
Sam
P.S. I am attaching what I have done so far. -
Hello, World - trying to understand the steps
Hello, Experts!
I am pretty new to Flash Development, so I am trying to understand how to implement the following steps using Flash environment
http://pdfdevjunkie.host.adobe.com/00_helloWorld.shtml
Step 1: Create the top level object. Use a "Module" rather than an "Application" and implement the "acrobat.collection.INavigator" interface. The INavigator interface enables the initial hand shake with the Acrobat ActionScript API. Its only member is the set host function, which your application implements. During the initialize cycle, the Acrobat ActionScript API invokes your set host function. Your set host function then initializes itself, can add event listeners, and performs other setup tasks.Your code might look something like this.
<mx:Module xmlns:mx="http://www.adobe.com/2006/mxml" implements="acrobat.collection.INavigator" height="100%" width="100%" horizontalScrollPolicy="off" verticalScrollPolicy="off" >
Step 2: Create your user interface elements. In this example, I'm using a "DataGrid" which is overkill for a simple list but I'm going to expand on this example in the future. Also notice that I'm using "fileName" in the dataField. The "fileName" is a property of an item in the PDF Portfolio "items" collection. Later when we set the dataProvider of the DataGrid, the grid will fill with the fileNames of the files in the Portfolio.
<mx:DataGrid id="itemList" initialize="onInitialize()" width="350" rowCount="12"> <mx:columns> <mx:DataGridColumn dataField="fileName" headerText="Name"/> </mx:columns> </mx:DataGrid>
Step 3: Respond to the "initialize" event during the creation of your interface components. This is important because there is no coordination of the Flash Player's initialization of your UI components and the set host(), so these two important milestone events in your Navigator's startup phase could occur in either order. The gist of a good way to handler this race condition is to have both your INavigator.set host() implementation and your initialize() or creationComplete() handler both funnel into a common function that starts interacting with the collection only after you have a non-null host and an initialized UI. You'll see in the code samples below and in step 4, both events funnel into the "startEverything()" function. I'll duscuss that function in the 5th step.
private function onInitialize():void { _listInitialized = true; startEverything(); }Hello, Experts!
I am pretty new to Flash Development, so I am trying to understand how to implement the following steps using Flash environment
http://pdfdevjunkie.host.adobe.com/00_helloWorld.shtml
Step 1: Create the top level object. Use a "Module" rather than an "Application" and implement the "acrobat.collection.INavigator" interface. The INavigator interface enables the initial hand shake with the Acrobat ActionScript API. Its only member is the set host function, which your application implements. During the initialize cycle, the Acrobat ActionScript API invokes your set host function. Your set host function then initializes itself, can add event listeners, and performs other setup tasks.Your code might look something like this.
<mx:Module xmlns:mx="http://www.adobe.com/2006/mxml" implements="acrobat.collection.INavigator" height="100%" width="100%" horizontalScrollPolicy="off" verticalScrollPolicy="off" >
Step 2: Create your user interface elements. In this example, I'm using a "DataGrid" which is overkill for a simple list but I'm going to expand on this example in the future. Also notice that I'm using "fileName" in the dataField. The "fileName" is a property of an item in the PDF Portfolio "items" collection. Later when we set the dataProvider of the DataGrid, the grid will fill with the fileNames of the files in the Portfolio.
<mx:DataGrid id="itemList" initialize="onInitialize()" width="350" rowCount="12"> <mx:columns> <mx:DataGridColumn dataField="fileName" headerText="Name"/> </mx:columns> </mx:DataGrid>
Step 3: Respond to the "initialize" event during the creation of your interface components. This is important because there is no coordination of the Flash Player's initialization of your UI components and the set host(), so these two important milestone events in your Navigator's startup phase could occur in either order. The gist of a good way to handler this race condition is to have both your INavigator.set host() implementation and your initialize() or creationComplete() handler both funnel into a common function that starts interacting with the collection only after you have a non-null host and an initialized UI. You'll see in the code samples below and in step 4, both events funnel into the "startEverything()" function. I'll duscuss that function in the 5th step.
private function onInitialize():void { _listInitialized = true; startEverything(); } -
UTL_HTTP.end_of_body Exception Error. Trying to Understand the Reason Why?
I have the following PLSQL Function that returns a End_of_body Error. This started when we migrated from 10g to 11g. It is simple enough to capture so the error does not stop the Function Flow, but the error causes the OCI driver in OBIEE to error, which prevents the use of OBIEE IBOT to execute. Trying to understand why this error is occurring..not sure if we have a permissions issue on the UTL_HTTP Package or what?
Anyone seen this problem in 11g? Suggests on resolving would be great. Thanks.
FUNCTION AA_DEMO_PO_WSDL(IN_MESSAGE IN VARCHAR2)
RETURN VARCHAR IS
soap_request varchar2(30000);
soap_respond varchar2(30000);
http_req utl_http.req;
http_resp utl_http.resp;
launch_url varchar2(240) ;
o_message varchar2(240) ;
po_amount number := 2000 ;
total_calls number := 0;
cursor c_PO_exists is Cursor Logic..
begin
total_calls := 0;
For po_wsdl in c_PO_exists
LOOP
total_calls := total_calls + 1;
soap_request:='<?xml version="1.0" encoding="UTF-8"?>
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
<soap:Header/>
<soap:Body xmlns:ns1="http://xmlns.oracle.com/PurchaseOrder_Approval">
<ns1:ProcessRequest><ns1:input>PO' || po_wsdl.order_no || '</ns1:input></ns1:ProcessRequest>
</soap:Body>
</soap:Envelope>';
Begin
http_req:= utl_http.begin_request('myURL/PurchaseOrder_Approval/1.0','POST','HTTP/1.1');
utl_http.set_header(http_req, 'Content-Type', 'text/xml') ;
utl_http.set_header(http_req, 'Content-Length', length(soap_request)) ;
utl_http.set_header(http_req, 'SOAPAction', 'initiate');
utl_http.write_text(http_req, soap_request) ;
http_resp:= utl_http.get_response(http_req) ;
utl_http.read_text(http_resp, soap_respond) ;
utl_http.end_response(http_resp) ;
Exception
WHEN UTL_HTTP.end_of_body THEN
utl_http.end_response(http_resp);
When utl_http.too_many_requests then
utl_http.end_response(http_resp);
o_message := 'End_Reponse' || ' from proc.';
when OTHERS then
o_message := SQLERRM || ' from proc.';
return o_message;
end;
END LOOP;
Return 'Workflow Initiated-' ||to_char(total_calls);
end AA_DEMO_PO_WSDL;Hi, thanks,
it is oracle10g,
The Exception is : ORA-29266: end-of-body reached
ORA-06512: at "SYS.UTL_HTTP", line 1349
then the line in my function ,
damorgan wrote:
But I do note that when I do this I always do a get_header_count and get_header before get_read.what get_read , u mean?
thanks for the link ,
appreciated -
Trying to understand the getResource method
Hi!
I'm writing a simple game and I'm using a game framework for java. The framework uses the getResource("path") method on creating every texture. The constructor only accepts the relative path. My problem is I don't want image files to be placed in the build folder. I would like to create textures from an absolute path. I don't want to modify the framework code.
In the Class Loader javadoc I've found that getResorce method executes the findResorce method if it fails on finding the resource. The findResource method should be overriden in a Class Loader implementation. How can I do it?
Thanks.morgalr wrote:
tom_ex wrote:
Hi!
I'm writing a simple game and I'm using a game framework for java. The framework uses the getResource("path") method on creating every texture. The constructor only accepts the relative path. My problem is I don't want image files to be placed in the build folder. I would like to create textures from an absolute path. I don't want to modify the framework code.
In the Class Loader javadoc I've found that getResorce method executes the findResorce method if it fails on finding the resource. The findResource method should be overriden in a Class Loader implementation. How can I do it?
Thanks.It does this so you can JAR your application, which gives you the ability to distribute an executable with all of your resources included. So your buds will not have to worry about if they have the support files installed to run your application or not.I understand the intention, but it's rather an opposite of what I'm trying to do. In my idea the game on it's first running aks the user for a path. The path points a place where the sounds and images should by downloaded i.e. from an ftp server. On the later runnings the game already know where the images, etc have been downloaded and uses them. -
Trying to understand the issue
Under 10.5.1 I used TM to back to a external USB drive off my PC. It worked fine. Along comes 10.5.2 and that fails. Finally heard about creating the sparse image on my machine and copied it to the drive and then the backups went well again. Unfortunately this was about 1 week before 10.5.3. Now they do not work again. I finally gave up, and moved the drive over to the USB on my MacBook, reformatted and now TM is happy. Can someone explain the issues here and what the basic problem is with using TM across the network? I do not get it and would simply like to understand. Thank you!
the basic problem is that using TM over a network is not officially supported except for backing up to disks attached to Time Capsule. there are various hacks to get around that but they are just that - hacks. updates are not tested to see if they break those hacks and any update can break any one of them at any moment. this being said, I haven't heard of 10.5.3 breaking this particular hack.
did you use [this procedure|http://www.macosxhints.com/article.php?story=20080420211034137&query= Time%2Bmachine] to set up your TM?
Maybe you are looking for
-
I have just signed up for iTunes match and have a question. I have a shedload of unorganized music from various CD rips over the years. None of the file names are right, tags are not filled in etc and I dont have the time/patience to go through thous
-
Time Machine has been making its regular backups but now for some reason, Time Machine is not recognizing the external disk. I have tried restarting the machine, powering off and on the external drive, changing firewire ports and nothing has worked.
-
I have lost sound on my iPad in apps unless I use headphones ,does anyone know how to get sound back without them .I have used the mute volume on the bar at bottom of screen and the slider volume control there only shows when headphones are plugged i
-
Error in starting nidevldu and nipxirmu services (windows event viewer)
A computer running Windows XP SP1 and a Visual basic (V6.0) application that I've developped had crashed several times. I've seen lots of errors in the Windows event viewer saying that the nidevldu and nipxirmu services were trying to start (exact fr
-
Prime NCS: TACACS+ Integration into ACS 5.1
Hello, i'd like to integrate TACACS+ Integration into NCS. I configured my ACS 5.1 correctly, but I get an "Access is denied to NCS" at the web login page. In the ACS i see a successful authentication. Any ideas? regards Alex Here is my Shell Profile