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• How Would You Design This Table?

  - by sooprise

  I have to create a table where each row needs to store 50 number values. Each row will always need to store 50 number values. If this was a smaller number of values, I would just make fields for each of the values, but because there are 50, this approach seems a bit cumbersome (but since it will always be 50 values, maybe this is the correct approach?). Is there a way to store an array of values in a field? This seems like a nice solution, but the concept is almost identical to creating a relational database.

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• design an extendible and pluggable business logic flow handler in php

  - by Broncha

  I am working on a project where I need to allow a pluggable way to inject business processes in the normal data flow. eg There is an ordering system. The standard flow of the application is A consumer orders an item. Pays for it and card is authorized. Admin captures the payment. Order is marked as complete and item is shipped. But this process may vary (extra steps in between) for different clients. Say a client would need to validate the location of the consumer before he is presented with a credit card form, OR his policies might require some other processes in between. I am thinking of using State Pattern for processing orders, saving the current state of the order in database, and initializing the state of order from the saved state. I would also need some mechanism, where a small plugin would be able to inject business specific states in the state machine. Am I thinking the right way? Are there already implemented patterns for this kind of situation? I am working with Codeigniter and basically this would mean for me, to redirect to proper controller according to the current state of the order. Like, if the state of the order is unconfirmed then redirect the user to details page and then change the state to pending. If some client would need to do some validation, then register an intermediate state between unconfirmed and pending Please suggest.

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• Client-server application design issue

  - by user2547823

  I have a collection of clients on server's side. And there are some objects that need to work with that collection - adding and removing clients, sending message to them, updating connection settings and so on. They should perform these actions simultaneously, so mutex or another synchronization primitive is required. I want to share one instance of collection between these objects, but all of them require access to private fields of collection. I hope that code sample makes it more clear[C++]: class Collection { std::vector< Client* > clients; Mutex mLock; ... } class ClientNotifier { void sendMessage() { mLock.lock(); // loop over clients and send message to each of them } } class ConnectionSettingsUpdater { void changeSettings( const std::string& name ) { mLock.lock(); // if client with this name is inside collection, change its settings } } As you can see, all these classes require direct access to Collection's private fields. Can you give me an advice about how to implement such behaviour correctly, i.e. keeping Collection's interface simple without it knowing about its users?

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• Layering Design Pattern in Java clean code style

  - by zeraDev

  As a Java developer, I am developing trying to use the clean code rules. But in my team we are facing a concrete problem: We have a business layer offering a service called "createObject", this service makes a lot of operation which can result to problem. E.g: parentObjectDontExist, objectAlreadyExist, dontHaveAuthorizationToCreate, operationFailed... and we want the UI using this service to display different information messages depending which error occurred. In old java dev, we should have create all signed exception type and throw it in createObject. As Clean code says, it is forbidden to use Exception for business logic AND signed exceptions are evil... Why not...But i don't know how to solved this problem and i don't want to use return code. How do you do? Thanks for youre experience return.

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• What OO Design to use ( is there a Design Pattern )?

  - by Blundell

  I have two objects that represent a 'Bar/Club' ( a place where you drink/socialise). In one scenario I need the bar name, address, distance, slogon In another scenario I need the bar name, address, website url, logo So I've got two objects representing the same thing but with different fields. I like to use immutable objects, so all the fields are set from the constructor. One option is to have two constructors and null the other fields i.e: class Bar { private final String name; private final Distance distance; private final Url url; public Bar(String name, Distance distance){ this.name = name; this.distance = distance; this.url = null; } public Bar(String name, Url url){ this.name = name; this.distance = null; this.url = url; } // getters } I don't like this as you would have to null check when you use the getters In my real example the first scenario has 3 fields and the second scenario has about 10, so it would be a real pain having two constructors, the amount of fields I would have to declare null and then when the object are in use you wouldn't know which Bar you where using and so what fields would be null and what wouldn't. What other options do I have? Two classes called BarPreview and Bar? Some type of inheritance / interface? Something else that is awesome?

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• Android design advice - services & broadcast receivers

  - by basudz

  I'm in the process of learning the Android SDK and creating some projects to get a grasp on the system. The current project I'm working with works just fine but I'd like to get some advice about other ways I can go about designing it. Here's what it needs to do. When a text message is received from a specific number, it should fire off a toast message that repeats at a certain interval for a specific duration. To make this work, I created an SMS BroadcastReceiver and checked the incoming messages for the number I'm looking for. If found, an IntentService would be started that would pull out the interval and duration from saved shared prefs. The IntentService would then fire off a broadcast. The BroadcastReceiver for this would catch it and use the AlarmManager to handle the toast message repetitions. This all works just fine, but I'm wondering if there's a cleaner or more efficient way of going about doing this? Any suggestions or advice?

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• Advice needed on Process - Service Design

  - by user99314

  Need some advice from experts on designing a flow. Create a service that will read a csv file which may contain anywhere over 6000+ rows of individual ids as shown in the sample below. Need to read that file and go to oracle database and fetch a vname,vnumber,vid of each id in the csv and then go to document repository i.e. Oracle UCM and download all documents matching vname,vnumber,vid there can be =0 documents for each vname,vnumber,vid and save them on a file system. UCM exposes a webservice to dowload the documents. Finally create a new csv appending the filenames that are downloaded for each id. Need to keep track of any errors but need to make sure to go over the whole ids in the csv to download the documents and skip in case of errors. Need some advice on how to go about designing this as there may be over 6000+ rows in a csv file and looping it and hitting the database for each individual id and then hitting a UCM may be a bit expensive so open for any idea. How to go by designing this solution. Wondering if messaging can be helpful here or offloading process of getting the vname,vnumber,vid to pl/sql packages, creating staging tables etc. Initial csv that contains ids: **ID** 12345a 12s345 3456fr we9795 we9797 Final csv output: **ID Files Downloaded from UCM** 12345a a.pdf,b.doc,d.txt 12s345 a1.pdf,s2.pdf,f4.gif 3456fr b.xls we9795 we9797 x.doc Thanks

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• How can I design multi-threaded application for larger user base

  - by rokonoid

  Here's my scenario, I need to develop a scalable application. My user base may be over 100K, every user has 10 or more small tasks. Tasks check every minute with a third party application through web services, retrieving data which is written in the database, then the data is forwarded to it's original destination. So here's the processing of a small task: while(true){ Boolean isNewInformationAvailable = checkWhetherInformationIsAvailableOrNot(); If(isNewInformationAvailable ==true){ fetchTheData(); writeToDatabase(); findTheDestination(); deliverTheData(); isAvailable =false; } } As the application is large, how should I approach designing this? I'm going to use Java to write it. Should I use concurrency, and how would you manage the concurrency?

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• Numeric Data Entry in WPF

  - by Matt Hamilton

  How are you handling the entry of numeric values in WPF applications? Without a NumericUpDown control, I've been using a TextBox and handling its PreviewKeyDown event with the code below, but it's pretty ugly. Has anyone found a more graceful way to get numeric data from the user without relying on a third-party control?private void NumericEditPreviewKeyDown(object sender, KeyEventArgs e) { bool isNumPadNumeric = (e.Key >= Key.NumPad0 && e.Key <= Key.NumPad9) || e.Key == Key.Decimal; bool isNumeric = (e.Key >= Key.D0 && e.Key <= Key.D9) || e.Key == Key.OemPeriod; if ((isNumeric || isNumPadNumeric) && Keyboard.Modifiers != ModifierKeys.None) { e.Handled = true; return; } bool isControl = ((Keyboard.Modifiers != ModifierKeys.None && Keyboard.Modifiers != ModifierKeys.Shift) || e.Key == Key.Back || e.Key == Key.Delete || e.Key == Key.Insert || e.Key == Key.Down || e.Key == Key.Left || e.Key == Key.Right || e.Key == Key.Up || e.Key == Key.Tab || e.Key == Key.PageDown || e.Key == Key.PageUp || e.Key == Key.Enter || e.Key == Key.Return || e.Key == Key.Escape || e.Key == Key.Home || e.Key == Key.End); e.Handled = !isControl && !isNumeric && !isNumPadNumeric; }

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• Foreign key,local key?

  - by user198729

  CREATE TABLE products ( id integer unsigned auto_increment primary key ) ENGINE=INNODB; CREATE TABLE orders ( id integer PRIMARY KEY auto_increment, product_id integer unsigned, quantity integer, INDEX product_id_idx (product_id), FOREIGN KEY (product_id) REFERENCES products (id) ) ENGINE=INNODB; Here the products and orders obviously have some kind of relation--foreign key relation. Also a coin has two sides,so I'm doubting how do we say which table is the foreign key side or local key side?

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• NULL-keys for key/value table

  - by user72185

  (Using Oracle) I have a table with key/value pairs like this: create table MESSAGE_INDEX ( KEY VARCHAR2(256) not null, VALUE VARCHAR2(4000) not null, MESSAGE_ID NUMBER not null ) I now want to find all the messages where key = 'someKey' and value is 'val1', 'val2' or 'val3' - OR value is null in which case there will be no entry in the table at all. This is to save space; there would be a large number of keys with null values if I stored them all. I think this works: SELECT message_id FROM message_index idx WHERE ((key = 'someKey' AND value IN ('val1', 'val2', 'val3')) OR NOT EXISTS (SELECT 1 FROM message_index WHERE key = 'someKey' AND idx.message_id = message_id)) But is is extremely slow. Takes 8 seconds with 700K records in message_index and there will be many more records and more search criteria when moving outside of my test environment. Primary key is key, value, message_id: add constraint PK_KEY_VALUE primary key (KEY, VALUE, MESSAGE_ID) And I added another index for message_id, to speed up searching for missing keys: create index IDX_MESSAGE_ID on MESSAGE_INDEX (MESSAGE_ID) I will be doing several of these key/value lookups in every search, not just one as shown above. So far I am doing them nested, where output id's of one level is the input to the next. E.g.: SELECT message_id from message_index WHERE (key/value compare) AND message_id IN ( SELECT ... and so on ) What can I do to speed this up?

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• Would Using a PHP Framework Be Beneficial in My Context?

  - by Fractal

  I've just started work at a small start-up company who mainly uses PHP to develop their front-end apps. I had no prior PHP experience before joining, and this has led to my apps becoming large pieces of spaghetti code. I essentially started by adding code to implement an initial feature, and then continued to hack in more code to implement further features – without much thought for the overall design. The apps themselves output XML to render on small mobile devices. I recently started looking into frameworks that I could use. I reckon an advantage would be that they seem to force developers to modularise their programs using good-practice design patterns. This seems great for someone in my position. The extra functions they provide, for example: interfacing with databases in such a way as to make SQL injection impossible, would be very useful too. The downside I can see is that there will be a lot of overhead for me in terms of the time taken to learn the framework itself (while still getting to grips with PHP itself). I'm also worried that it will be overkill for the scale of the apps we develop. They tend to be programs that interface with a fairly simple back-end DB, and will generate about 5 different XML screens. Probably around 1 or 2 thousand lines of code. The time it takes just to configure the frameworks may not be worth it. The final problem I can see is that developers in the company – who have to go over my code, and who do not know the PHP framework I may use – will have a much harder time understanding it. Given those pros and cons, I'm still not sure on what the best course of action will be; so any advice will be greatly appreciated.

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• Checking preconditions or not

  - by Robert Dailey

  I've been wanting to find a solid answer to the question of whether or not to have runtime checks to validate input for the purposes of ensuring a client has stuck to their end of the agreement in design by contract. For example, consider a simple class constructor: class Foo { public: Foo( BarHandle bar ) { FooHandle handle = GetFooHandle( bar ); if( handle == NULL ) { throw std::exception( "invalid FooHandle" ); } } }; I would argue in this case that a user should not attempt to construct a Foo without a valid BarHandle. It doesn't seem right to verify that bar is valid inside of Foo's constructor. If I simply document that Foo's constructor requires a valid BarHandle, isn't that enough? Is this a proper way to enforce my precondition in design by contract? So far, everything I've read has mixed opinions on this. It seems like 50% of people would say to verify that bar is valid, the other 50% would say that I shouldn't do it, for example consider a case where the user verifies their BarHandle is correct, but a second (and unnecessary) check is also being done inside of Foo's constructor.

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• Confused about implementing Single Responsibility Principle

  - by HichemSeeSharp

  Please bear with me if the question looks not well structured. To put you in the context of my issue: I am building an application that invoices vehicles stay duration in a parking. In addition to the stay service there are some other services. Each service has its own calculation logic. Here is an illustration (please correct me if the design is wrong): public abstract class Service { public int Id { get; set; } public bool IsActivated { get; set; } public string Name { get; set } public decimal Price { get; set; } } public class VehicleService : Service { //MTM : many to many public virtual ICollection<MTMVehicleService> Vehicles { get; set; } } public class StayService : VehicleService { } public class Vehicle { public int Id { get; set; } public string ChassisNumber { get; set; } public DateTime? EntryDate { get; set; } public DateTime? DeliveryDate { get; set; } //... public virtual ICollection<MTMVehicleService> Services{ get; set; } } Now, I am focusing on the stay service as an example: I would like to know at invoicing time which class(es) would be responsible for generating the invoice item for the service and for each vehicle? This should calculate the duration cost knowing that the duration could be invoiced partially so the like is as follows: not yet invoiced stay days * stay price per day. At this moment I have InvoiceItemsGenerator do everything but I am aware that there is a better design.

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• A better alternative to incompatible implementations for the same interface?

  - by glenatron

  I am working on a piece of code which performs a set task in several parallel environments where the behaviour of the different components in the task are similar but quite different. This means that my implementations are quite different but they are all based on the relationships between the same interfaces, something like this: IDataReader -> ContinuousDataReader -> ChunkedDataReader IDataProcessor -> ContinuousDataProcessor -> ChunkedDataProcessor IDataWriter -> ContinuousDataWriter -> ChunkedDataWriter So that in either environment we have an IDataReader, IDataProcessor and IDataWriter and then we can use Dependency Injection to ensure that we have the correct one of each for the current environment, so if we are working with data in chunks we use the ChunkedDataReader, ChunkedDataProcessor and ChunkedDataWriter and if we have continuous data we have the continuous versions. However the behaviour of these classes is quite different internally and one could certainly not go from a ContinuousDataReader to the ChunkedDataReader even though they are both IDataProcessors. This feels to me as though it is incorrect ( possibly an LSP violation? ) and certainly not a theoretically correct way of working. It is almost as though the "real" interface here is the combination of all three classes. Unfortunately in the project I am working on with the deadlines we are working to, we're pretty much stuck with this design, but if we had a little more elbow room, what would be a better design approach in this kind of scenario?

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• Use decorator and factory together to extend objects?

  - by TheClue

  I'm new to OOP and design pattern. I've a simple app that handles the generation of Tables, Columns (that belong to Table), Rows (that belong to Column) and Values (that belong to Rows). Each of these object can have a collection of Property, which is in turn defined as an enum. They are all interfaces: I used factories to get concrete instances of these products, depending on circumnstances. Now I'm facing the problem of extending these classes. Let's say I need another product called "SpecialTable" which in turn has some special properties or new methods like 'getSomethingSpecial' or an extended set of Property. The only way is to extend/specialize all my elements (ie. build a SpecialTableFactory, a SpecialTable interface and a SpecialTableImpl concrete)? What to do if, let's say, I plan to use standard methods like addRow(Column column, String name) that doesn't need to be specialized? I don't like the idea to inherit factories and interfaces, but since SpecialTable has more methods than Table i guess it cannot share the same factory. Am I wrong? Another question: if I need to define product properties at run time (a Table that is upgraded to SpecialTable at runtime), i guess i should use a decorator. Is it possible (and how) to combine both factory and decorator design? Is it better to use a State or Strategy pattern, instead?

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• Linux: Apple Wireless A1314 Fn key not registered, looks like software bug

  - by ramplank

  I'm trying to set up my Apple Wireless Keyboard with my Kubuntu systems. These are PC hardware powered by Intel Atom and Intel i5 respectively. The keyboard has a US keyboard layout and has model number A1314 written on the back. It takes two AA batteries. I'm saying that because it appears there are multiple types of model A1314. I have tried this on a 10.04, 11.04, 11.10 and 12.04 system with no success. Every time using a bluetooth dongle and the KDE bluetooth notification tray applet, the keyboard can be connected. In both cases it shows up as "Apple Wireless Keyboard". Almost everything works as expected, in fact, I'm typing on it right now. But one thing doesn't: The Fn key. I'd like to use Fn + Down Arrow as PgDn / Page Down, I understand this is default behaviour on Apple keyboards. And of course I'd like the same for Page Up, Home and End. I'll stick to Page Down in my example. I used the xev tool to see the keycodes the system receives, and if I press on Fn nothing happens, and nothing is registered. If I press Fn + Down Arrow, xev only registers the down arrow. Here's the output from my 11.04 system to illustrate: Press just the Fn key: no output Press Down Arrow key: KeyPress event, serial 36, synthetic NO, window 0x4400001, root 0x15d, subw 0x4400002, time 2699773, (44,45), root:(1352,298), state 0x10, keycode 116 (keysym 0xff54, Down), same_screen YES, XLookupString gives 0 bytes: XmbLookupString gives 0 bytes: XFilterEvent returns: False KeyRelease event, serial 36, synthetic NO, window 0x4400001, root 0x15d, subw 0x4400002, time 2699860, (44,45), root:(1352,298), state 0x10, keycode 116 (keysym 0xff54, Down), same_screen YES, XLookupString gives 0 bytes: XFilterEvent returns: False Press Fn+Down Arrow Keys together: KeyPress event, serial 36, synthetic NO, window 0x4400001, root 0x15d, subw 0x4400002, time 2701548, (44,45), root:(1352,298), state 0x10, keycode 116 (keysym 0xff54, Down), same_screen YES, XLookupString gives 0 bytes: XmbLookupString gives 0 bytes: XFilterEvent returns: False KeyRelease event, serial 36, synthetic NO, window 0x4400001, root 0x15d, subw 0x4400002, time 2701623, (44,45), root:(1352,298), state 0x10, keycode 116 (keysym 0xff54, Down), same_screen YES, XLookupString gives 0 bytes: XFilterEvent returns: False I've been searching this forum and other Linux-related forums for hours but I still have not found a solution. I mostly found advice on how to fix this when using an actual apple laptop or desktop, but I don't have that. They said to try something like the following echo 2 > /sys/module/hid_apple/ ... But since there's no hid_apple directory present on my systems, I've needed to modprobe hid_apple first. That didn't help either. I'm cool with changing some config files, or compiling my own patched kernel if that's necessary. I currently have a 10.04 and 12.04 system available to test. The same issue occurs when hooked up to Windows 7. Fn key still does nothing, not by itself or in combination with other keys. With some AutoHotkey fiddling, I was able to confirm the key is registered as pressed, but ignored by default. A custom AutoHotkey script can fix that. But AutoHotkey is only for Windows, I want my problem fixed on Linux. Hooked up to an iPad 2 it only works in combination with the F1-F12 keys. Not with the arrow keys. If the screen of the ipad is off, and I press just the Fn key, the screen will come on, so the key itself is registered as pressed. So to sum up my question: Can anyone help me get Page Up, Page Down, Home and End to work on this keyboard, when that requires me to use an Fn key which is currently not registered?

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• Database PK-FK design for future-effective-date entries?

  - by Scott Balmos

  Ultimately I'm going to convert this into a Hibernate/JPA design. But I wanted to start out from purely a database perspective. We have various tables containing data that is future-effective-dated. Take an employee table with the following pseudo-definition: employee id INT AUTO_INCREMENT ... data fields ... effectiveFrom DATE effectiveTo DATE employee_reviews id INT AUTO_INCREMENT employee_id INT FK employee.id Very simplistic. But let's say Employee A has id = 1, effectiveFrom = 1/1/2011, effectiveTo = 1/1/2099. That employee is going to be changing jobs in the future, which would in theory create a new row, id = 2 with effectiveFrom = 7/1/2011, effectiveTo = 1/1/2099, and id = 1's effectiveTo updated to 6/30/2011. But now, my program would have to go through any table that has a FK relationship to employee every night, and update those FK to reference the newly-effective employee entry. I have seen various postings in both pure SQL and Hibernate forums that I should have a separate employee_versions table, which is where I would have all effective-dated data stored, resulting in the updated pseudo-definition below: employee id INT AUTO_INCREMENT employee_versions id INT AUTO_INCREMENT employee_id INT FK employee.id ... data fields ... effectiveFrom DATE effectiveTo DATE employee_reviews id INT AUTO_INCREMENT employee_id INT FK employee.id Then to get any actual data, one would have to actually select from employee_versions with the proper employee_id and date range. This feels rather unnatural to have this secondary "versions" table for each versioned entity. Anyone have any opinions, suggestions from your own prior work, etc? Like I said, I'm taking this purely from a general SQL design standpoint first before layering in Hibernate on top. Thanks!

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• Memento with optional state?

  - by Korey Hinton

  EDIT: As pointed out by Steve Evers and pdr, I am not correctly implementing the Memento pattern, my design is actually State pattern. Menu Program I built a console-based menu program with multiple levels that selects a particular test to run. Each level more precisely describes the operation. At any level you can type back to go back one level (memento). Level 1: Server Type? [1] Server A [2] Server B Level 2: Server environment? [1] test [2] production Level 3: Test type? [1] load [2] unit Level 4: Data Collection? [1] Legal docs [2] Corporate docs Level 4.5 (optional): Load Test Type [2] Multi TIF [2] Single PDF Level 5: Command Type? [1] Move [2] Copy [3] Remove [4] Custom Level 6: Enter a keyword [setup, cleanup, run] Design States PROBLEM: Right now the STATES enum is the determining factor as to what state is BACK and what state is NEXT yet it knows nothing about what the current memento state is. Has anyone experienced a similar issue and found an effective way to handle mementos with optional state? static enum STATES { SERVER, ENVIRONMENT, TEST_TYPE, COLLECTION, COMMAND_TYPE, KEYWORD, FINISHED } Possible Solution (Not-flexible) In reference to my code below, every case statement in the Menu class could check the state of currentMemo and then set the STATE (enum) accordingly to pass to the Builder. However, this doesn't seem flexible very flexible to change and I'm struggling to see an effective way refactor the design. class Menu extends StateConscious { private State state; private Scanner reader; private ServerUtils utility; Menu() { state = new State(); reader = new Scanner(System.in); utility = new ServerUtils(); } // Recurring menu logic public void startPromptingLoop() { List<State> states = new ArrayList<>(); states.add(new State()); boolean redoInput = false; boolean userIsDone = false; while (true) { // get Memento from last loop Memento currentMemento = states.get(states.size() - 1) .saveMemento(); if (currentMemento == null) currentMemento = new Memento.Builder(0).build(); if (!redoInput) System.out.println(currentMemento.prompt); redoInput = false; // prepare Memento for next loop Memento nextMemento = null; STATES state = STATES.values()[states.size() - 1]; // get user input String selection = reader.nextLine(); switch (selection) { case "exit": reader.close(); return; // only escape case "quit": nextMemento = new Memento.Builder(first(), currentMemento, selection).build(); states.clear(); break; case "back": nextMemento = new Memento.Builder(previous(state), currentMemento, selection).build(); if (states.size() <= 1) { states.remove(0); } else { states.remove(states.size() - 1); states.remove(states.size() - 1); } break; case "1": nextMemento = new Memento.Builder(next(state), currentMemento, selection).build(); break; case "2": nextMemento = new Memento.Builder(next(state), currentMemento, selection).build(); break; case "3": nextMemento = new Memento.Builder(next(state), currentMemento, selection).build(); break; case "4": nextMemento = new Memento.Builder(next(state), currentMemento, selection).build(); break; default: if (state.equals(STATES.CATEGORY)) { String command = selection; System.out.println("Executing " + command + " command on: " + currentMemento.type + " " + currentMemento.environment); utility.executeCommand(currentMemento.nickname, command); userIsDone = true; states.clear(); nextMemento = new Memento.Builder(first(), currentMemento, selection).build(); } else if (state.equals(STATES.KEYWORD)) { nextMemento = new Memento.Builder(next(state), currentMemento, selection).build(); states.clear(); nextMemento = new Memento.Builder(first(), currentMemento, selection).build(); } else { redoInput = true; System.out.println("give it another try"); continue; } break; } if (userIsDone) { // start the recurring menu over from the beginning for (int i = 0; i < states.size(); i++) { if (i != 0) { states.remove(i); // remove all except first } } reader = new Scanner(System.in); this.state = new State(); userIsDone = false; } if (!redoInput) { this.state.restoreMemento(nextMemento); states.add(this.state); } } } }

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• How to update primary key

  - by slave016

  Here is my problem: I have 2 tables: 1.WORKER, with coloumns |ID|OTHER_STAF| , where ID is primary key, and 2.FIRM, with coloumns |FPK|ID|SOMETHING_ELSE| , where combination FPK and ID make primary key, and also ID is a foreign key referenced to WORKER.ID (not null, and must have same value as in WORKER). I want to make stored procedure UPDATE_ID_WORKER, where I would like to change the value of specific ID in WORKER, and also in all instances of specific value of ID in FIRM. stored procedure: ........ @id .. ???? ........ Thanks for every advice...

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• Problem using a public key when connecting to a SSH server running on Cygwin

  - by binary255

  We have installed Cygwin on a Windows Server 2008 Standard server and it working pretty well. Unfortunately we still have a big problem. We want to connect using a public key through SSH which doesn't work. It always falls back to using password login. We have appended our public key to ~/.ssh/authorized_keys on the server and we have our private and public key in ~/.ssh/id_dsa respective ~/.ssh/id_dsa.pub on the client. When debugging the SSH login session we see that the key is offered by the server apparently rejects it by some unknown reason. The SSH output when connecting from an Ubuntu 9.10 desktop with debug information enabled: $ ssh -v 192.168.10.11 OpenSSH_5.1p1 Debian-6ubuntu2, OpenSSL 0.9.8g 19 Oct 2007 debug1: Reading configuration data /home/myuseraccount/.ssh/config debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for debug1: Connecting to 192.168.10.11 [192.168.10.11] port 22. debug1: Connection established. debug1: identity file /home/myuseraccount/.ssh/identity type -1 debug1: identity file /home/myuseraccount/.ssh/id_rsa type -1 debug1: identity file /home/myuseraccount/.ssh/id_dsa type 2 debug1: Checking blacklist file /usr/share/ssh/blacklist.DSA-1024 debug1: Checking blacklist file /etc/ssh/blacklist.DSA-1024 debug1: Remote protocol version 2.0, remote software version OpenSSH_5.3 debug1: match: OpenSSH_5.3 pat OpenSSH debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.1p1 Debian-6ubuntu2 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-cbc hmac-md5 none debug1: kex: client->server aes128-cbc hmac-md5 none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY debug1: Host '192.168.10.11' is known and matches the RSA host key. debug1: Found key in /home/myuseraccount/.ssh/known_hosts:12 debug1: ssh_rsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,password,keyboard-interactive debug1: Next authentication method: publickey debug1: Offering public key: /home/myuseraccount/.ssh/id_dsa debug1: Authentications that can continue: publickey,password,keyboard-interactive debug1: Trying private key: /home/myuseraccount/.ssh/identity debug1: Trying private key: /home/myuseraccount/.ssh/id_rsa debug1: Next authentication method: keyboard-interactive debug1: Authentications that can continue: publickey,password,keyboard-interactive debug1: Next authentication method: password [email protected]'s password: The version of Cygwin: $ uname -a CYGWIN_NT-6.0 servername 1.7.1(0.218/5/3) 2009-12-07 11:48 i686 Cygwin The installed packages: $ cygcheck -c Cygwin Package Information Package Version Status _update-info-dir 00871-1 OK alternatives 1.3.30c-10 OK arj 3.10.22-1 OK aspell 0.60.5-1 OK aspell-en 6.0.0-1 OK aspell-sv 0.50.2-2 OK autossh 1.4b-1 OK base-cygwin 2.1-1 OK base-files 3.9-3 OK base-passwd 3.1-1 OK bash 3.2.49-23 OK bash-completion 1.1-2 OK bc 1.06-2 OK bzip2 1.0.5-10 OK cabextract 1.1-1 OK compface 1.5.2-1 OK coreutils 7.0-2 OK cron 4.1-59 OK crypt 1.1-1 OK csih 0.9.1-1 OK curl 7.19.6-1 OK cvs 1.12.13-10 OK cvsutils 0.2.5-1 OK cygrunsrv 1.34-1 OK cygutils 1.4.2-1 OK cygwin 1.7.1-1 OK cygwin-doc 1.5-1 OK cygwin-x-doc 1.1.0-1 OK dash 0.5.5.1-2 OK diffutils 2.8.7-2 OK doxygen 1.6.1-2 OK e2fsprogs 1.35-3 OK editrights 1.01-2 OK emacs 23.1-10 OK emacs-X11 23.1-10 OK file 5.04-1 OK findutils 4.5.5-1 OK flip 1.19-1 OK font-adobe-dpi75 1.0.1-1 OK font-alias 1.0.2-1 OK font-encodings 1.0.3-1 OK font-misc-misc 1.1.0-1 OK fontconfig 2.8.0-1 OK gamin 0.1.10-10 OK gawk 3.1.7-1 OK gettext 0.17-11 OK gnome-icon-theme 2.28.0-1 OK grep 2.5.4-2 OK groff 1.19.2-2 OK gvim 7.2.264-1 OK gzip 1.3.12-2 OK hicolor-icon-theme 0.11-1 OK inetutils 1.5-6 OK ipc-utils 1.0-1 OK keychain 2.6.8-1 OK less 429-1 OK libaspell15 0.60.5-1 OK libatk1.0_0 1.28.0-1 OK libaudio2 1.9.2-1 OK libbz2_1 1.0.5-10 OK libcairo2 1.8.8-1 OK libcurl4 7.19.6-1 OK libdb4.2 4.2.52.5-2 OK libdb4.5 4.5.20.2-2 OK libexpat1 2.0.1-1 OK libfam0 0.1.10-10 OK libfontconfig1 2.8.0-1 OK libfontenc1 1.0.5-1 OK libfreetype6 2.3.12-1 OK libgcc1 4.3.4-3 OK libgdbm4 1.8.3-20 OK libgdk_pixbuf2.0_0 2.18.6-1 OK libgif4 4.1.6-10 OK libGL1 7.6.1-1 OK libglib2.0_0 2.22.4-2 OK libglitz1 0.5.6-10 OK libgmp3 4.3.1-3 OK libgtk2.0_0 2.18.6-1 OK libICE6 1.0.6-1 OK libiconv2 1.13.1-1 OK libidn11 1.16-1 OK libintl3 0.14.5-1 OK libintl8 0.17-11 OK libjasper1 1.900.1-1 OK libjbig2 2.0-11 OK libjpeg62 6b-21 OK libjpeg7 7-10 OK liblzma1 4.999.9beta-10 OK libncurses10 5.7-18 OK libncurses8 5.5-10 OK libncurses9 5.7-16 OK libopenldap2_3_0 2.3.43-1 OK libpango1.0_0 1.26.2-1 OK libpcre0 8.00-1 OK libpixman1_0 0.16.6-1 OK libpng12 1.2.35-10 OK libpopt0 1.6.4-4 OK libpq5 8.2.11-1 OK libreadline6 5.2.14-12 OK libreadline7 6.0.3-2 OK libsasl2 2.1.19-3 OK libSM6 1.1.1-1 OK libssh2_1 1.2.2-1 OK libssp0 4.3.4-3 OK libstdc++6 4.3.4-3 OK libtiff5 3.9.2-1 OK libwrap0 7.6-20 OK libX11_6 1.3.3-1 OK libXau6 1.0.5-1 OK libXaw3d7 1.5D-8 OK libXaw7 1.0.7-1 OK libxcb-render-util0 0.3.6-1 OK libxcb-render0 1.5-1 OK libxcb1 1.5-1 OK libXcomposite1 0.4.1-1 OK libXcursor1 1.1.10-1 OK libXdamage1 1.1.2-1 OK libXdmcp6 1.0.3-1 OK libXext6 1.1.1-1 OK libXfixes3 4.0.4-1 OK libXft2 2.1.14-1 OK libXi6 1.3-1 OK libXinerama1 1.1-1 OK libxkbfile1 1.0.6-1 OK libxml2 2.7.6-1 OK libXmu6 1.0.5-1 OK libXmuu1 1.0.5-1 OK libXpm4 3.5.8-1 OK libXrandr2 1.3.0-10 OK libXrender1 0.9.5-1 OK libXt6 1.0.7-1 OK links 1.00pre20-1 OK login 1.10-10 OK luit 1.0.5-1 OK lynx 2.8.5-4 OK man 1.6e-1 OK minires 1.02-1 OK mkfontdir 1.0.5-1 OK mkfontscale 1.0.7-1 OK openssh 5.4p1-1 OK openssl 0.9.8m-1 OK patch 2.5.8-9 OK patchutils 0.3.1-1 OK perl 5.10.1-3 OK rebase 3.0.1-1 OK run 1.1.12-11 OK screen 4.0.3-5 OK sed 4.1.5-2 OK shared-mime-info 0.70-1 OK tar 1.22.90-1 OK terminfo 5.7_20091114-13 OK terminfo0 5.5_20061104-11 OK texinfo 4.13-3 OK tidy 041206-1 OK time 1.7-2 OK tzcode 2009k-1 OK unzip 6.0-10 OK util-linux 2.14.1-1 OK vim 7.2.264-2 OK wget 1.11.4-4 OK which 2.20-2 OK wput 0.6.1-2 OK xauth 1.0.4-1 OK xclipboard 1.1.0-1 OK xcursor-themes 1.0.2-1 OK xemacs 21.4.22-1 OK xemacs-emacs-common 21.4.22-1 OK xemacs-sumo 2007-04-27-1 OK xemacs-tags 21.4.22-1 OK xeyes 1.1.0-1 OK xinit 1.2.1-1 OK xinput 1.5.0-1 OK xkbcomp 1.1.1-1 OK xkeyboard-config 1.8-1 OK xkill 1.0.2-1 OK xmodmap 1.0.4-1 OK xorg-docs 1.5-1 OK xorg-server 1.7.6-2 OK xrdb 1.0.6-1 OK xset 1.1.0-1 OK xterm 255-1 OK xz 4.999.9beta-10 OK zip 3.0-11 OK zlib 1.2.3-10 OK zlib-devel 1.2.3-10 OK zlib0 1.2.3-10 OK The ssh deamon configuration file: $ cat /etc/sshd_config # $OpenBSD: sshd_config,v 1.80 2008/07/02 02:24:18 djm Exp $ # This is the sshd server system-wide configuration file. See # sshd_config(5) for more information. # This sshd was compiled with PATH=/bin:/usr/sbin:/sbin:/usr/bin # The strategy used for options in the default sshd_config shipped with # OpenSSH is to specify options with their default value where # possible, but leave them commented. Uncommented options change a # default value. Port 22 #AddressFamily any #ListenAddress 0.0.0.0 #ListenAddress :: # Disable legacy (protocol version 1) support in the server for new # installations. In future the default will change to require explicit # activation of protocol 1 Protocol 2 # HostKey for protocol version 1 #HostKey /etc/ssh_host_key # HostKeys for protocol version 2 #HostKey /etc/ssh_host_rsa_key #HostKey /etc/ssh_host_dsa_key # Lifetime and size of ephemeral version 1 server key #KeyRegenerationInterval 1h #ServerKeyBits 1024 # Logging # obsoletes QuietMode and FascistLogging #SyslogFacility AUTH #LogLevel INFO # Authentication: #LoginGraceTime 2m #PermitRootLogin yes StrictModes no #MaxAuthTries 6 #MaxSessions 10 RSAAuthentication yes PubkeyAuthentication yes AuthorizedKeysFile .ssh/authorized_keys # For this to work you will also need host keys in /etc/ssh_known_hosts #RhostsRSAAuthentication no # similar for protocol version 2 #HostbasedAuthentication no # Change to yes if you don't trust ~/.ssh/known_hosts for # RhostsRSAAuthentication and HostbasedAuthentication #IgnoreUserKnownHosts no # Don't read the user's ~/.rhosts and ~/.shosts files #IgnoreRhosts yes # To disable tunneled clear text passwords, change to no here! #PasswordAuthentication yes #PermitEmptyPasswords no # Change to no to disable s/key passwords #ChallengeResponseAuthentication yes # Kerberos options #KerberosAuthentication no #KerberosOrLocalPasswd yes #KerberosTicketCleanup yes #KerberosGetAFSToken no # GSSAPI options #GSSAPIAuthentication no #GSSAPICleanupCredentials yes # Set this to 'yes' to enable PAM authentication, account processing, # and session processing. If this is enabled, PAM authentication will # be allowed through the ChallengeResponseAuthentication and # PasswordAuthentication. Depending on your PAM configuration, # PAM authentication via ChallengeResponseAuthentication may bypass # the setting of "PermitRootLogin without-password". # If you just want the PAM account and session checks to run without # PAM authentication, then enable this but set PasswordAuthentication # and ChallengeResponseAuthentication to 'no'. #UsePAM no AllowAgentForwarding yes AllowTcpForwarding yes GatewayPorts yes X11Forwarding yes X11DisplayOffset 10 X11UseLocalhost no #PrintMotd yes #PrintLastLog yes TCPKeepAlive yes #UseLogin no UsePrivilegeSeparation yes #PermitUserEnvironment no #Compression delayed #ClientAliveInterval 0 #ClientAliveCountMax 3 #UseDNS yes #PidFile /var/run/sshd.pid #MaxStartups 10 #PermitTunnel no #ChrootDirectory none # no default banner path #Banner none # override default of no subsystems Subsystem sftp /usr/sbin/sftp-server # Example of overriding settings on a per-user basis #Match User anoncvs #X11Forwarding yes #AllowTcpForwarding yes #ForceCommand cvs server I hope this information is enough to solve the problem. In case any more is needed please comment and I'll add it. Thank you for reading!

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• Problem using a public key when connecting to a SSH server running on Cygwin

  - by Deleted

  We have installed Cygwin on a Windows Server 2008 Standard server and it working pretty well. Unfortunately we still have a big problem. We want to connect using a public key through SSH which doesn't work. It always falls back to using password login. We have appended our public key to ~/.ssh/authorized_keys on the server and we have our private and public key in ~/.ssh/id_dsa respective ~/.ssh/id_dsa.pub on the client. When debugging the SSH login session we see that the key is offered by the server apparently rejects it by some unknown reason. The SSH output when connecting from an Ubuntu 9.10 desktop with debug information enabled: $ ssh -v 192.168.10.11 OpenSSH_5.1p1 Debian-6ubuntu2, OpenSSL 0.9.8g 19 Oct 2007 debug1: Reading configuration data /home/myuseraccount/.ssh/config debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for debug1: Connecting to 192.168.10.11 [192.168.10.11] port 22. debug1: Connection established. debug1: identity file /home/myuseraccount/.ssh/identity type -1 debug1: identity file /home/myuseraccount/.ssh/id_rsa type -1 debug1: identity file /home/myuseraccount/.ssh/id_dsa type 2 debug1: Checking blacklist file /usr/share/ssh/blacklist.DSA-1024 debug1: Checking blacklist file /etc/ssh/blacklist.DSA-1024 debug1: Remote protocol version 2.0, remote software version OpenSSH_5.3 debug1: match: OpenSSH_5.3 pat OpenSSH debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.1p1 Debian-6ubuntu2 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-cbc hmac-md5 none debug1: kex: client->server aes128-cbc hmac-md5 none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY debug1: Host '192.168.10.11' is known and matches the RSA host key. debug1: Found key in /home/myuseraccount/.ssh/known_hosts:12 debug1: ssh_rsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,password,keyboard-interactive debug1: Next authentication method: publickey debug1: Offering public key: /home/myuseraccount/.ssh/id_dsa debug1: Authentications that can continue: publickey,password,keyboard-interactive debug1: Trying private key: /home/myuseraccount/.ssh/identity debug1: Trying private key: /home/myuseraccount/.ssh/id_rsa debug1: Next authentication method: keyboard-interactive debug1: Authentications that can continue: publickey,password,keyboard-interactive debug1: Next authentication method: password [email protected]'s password: The version of Cygwin: $ uname -a CYGWIN_NT-6.0 servername 1.7.1(0.218/5/3) 2009-12-07 11:48 i686 Cygwin The installed packages: $ cygcheck -c Cygwin Package Information Package Version Status _update-info-dir 00871-1 OK alternatives 1.3.30c-10 OK arj 3.10.22-1 OK aspell 0.60.5-1 OK aspell-en 6.0.0-1 OK aspell-sv 0.50.2-2 OK autossh 1.4b-1 OK base-cygwin 2.1-1 OK base-files 3.9-3 OK base-passwd 3.1-1 OK bash 3.2.49-23 OK bash-completion 1.1-2 OK bc 1.06-2 OK bzip2 1.0.5-10 OK cabextract 1.1-1 OK compface 1.5.2-1 OK coreutils 7.0-2 OK cron 4.1-59 OK crypt 1.1-1 OK csih 0.9.1-1 OK curl 7.19.6-1 OK cvs 1.12.13-10 OK cvsutils 0.2.5-1 OK cygrunsrv 1.34-1 OK cygutils 1.4.2-1 OK cygwin 1.7.1-1 OK cygwin-doc 1.5-1 OK cygwin-x-doc 1.1.0-1 OK dash 0.5.5.1-2 OK diffutils 2.8.7-2 OK doxygen 1.6.1-2 OK e2fsprogs 1.35-3 OK editrights 1.01-2 OK emacs 23.1-10 OK emacs-X11 23.1-10 OK file 5.04-1 OK findutils 4.5.5-1 OK flip 1.19-1 OK font-adobe-dpi75 1.0.1-1 OK font-alias 1.0.2-1 OK font-encodings 1.0.3-1 OK font-misc-misc 1.1.0-1 OK fontconfig 2.8.0-1 OK gamin 0.1.10-10 OK gawk 3.1.7-1 OK gettext 0.17-11 OK gnome-icon-theme 2.28.0-1 OK grep 2.5.4-2 OK groff 1.19.2-2 OK gvim 7.2.264-1 OK gzip 1.3.12-2 OK hicolor-icon-theme 0.11-1 OK inetutils 1.5-6 OK ipc-utils 1.0-1 OK keychain 2.6.8-1 OK less 429-1 OK libaspell15 0.60.5-1 OK libatk1.0_0 1.28.0-1 OK libaudio2 1.9.2-1 OK libbz2_1 1.0.5-10 OK libcairo2 1.8.8-1 OK libcurl4 7.19.6-1 OK libdb4.2 4.2.52.5-2 OK libdb4.5 4.5.20.2-2 OK libexpat1 2.0.1-1 OK libfam0 0.1.10-10 OK libfontconfig1 2.8.0-1 OK libfontenc1 1.0.5-1 OK libfreetype6 2.3.12-1 OK libgcc1 4.3.4-3 OK libgdbm4 1.8.3-20 OK libgdk_pixbuf2.0_0 2.18.6-1 OK libgif4 4.1.6-10 OK libGL1 7.6.1-1 OK libglib2.0_0 2.22.4-2 OK libglitz1 0.5.6-10 OK libgmp3 4.3.1-3 OK libgtk2.0_0 2.18.6-1 OK libICE6 1.0.6-1 OK libiconv2 1.13.1-1 OK libidn11 1.16-1 OK libintl3 0.14.5-1 OK libintl8 0.17-11 OK libjasper1 1.900.1-1 OK libjbig2 2.0-11 OK libjpeg62 6b-21 OK libjpeg7 7-10 OK liblzma1 4.999.9beta-10 OK libncurses10 5.7-18 OK libncurses8 5.5-10 OK libncurses9 5.7-16 OK libopenldap2_3_0 2.3.43-1 OK libpango1.0_0 1.26.2-1 OK libpcre0 8.00-1 OK libpixman1_0 0.16.6-1 OK libpng12 1.2.35-10 OK libpopt0 1.6.4-4 OK libpq5 8.2.11-1 OK libreadline6 5.2.14-12 OK libreadline7 6.0.3-2 OK libsasl2 2.1.19-3 OK libSM6 1.1.1-1 OK libssh2_1 1.2.2-1 OK libssp0 4.3.4-3 OK libstdc++6 4.3.4-3 OK libtiff5 3.9.2-1 OK libwrap0 7.6-20 OK libX11_6 1.3.3-1 OK libXau6 1.0.5-1 OK libXaw3d7 1.5D-8 OK libXaw7 1.0.7-1 OK libxcb-render-util0 0.3.6-1 OK libxcb-render0 1.5-1 OK libxcb1 1.5-1 OK libXcomposite1 0.4.1-1 OK libXcursor1 1.1.10-1 OK libXdamage1 1.1.2-1 OK libXdmcp6 1.0.3-1 OK libXext6 1.1.1-1 OK libXfixes3 4.0.4-1 OK libXft2 2.1.14-1 OK libXi6 1.3-1 OK libXinerama1 1.1-1 OK libxkbfile1 1.0.6-1 OK libxml2 2.7.6-1 OK libXmu6 1.0.5-1 OK libXmuu1 1.0.5-1 OK libXpm4 3.5.8-1 OK libXrandr2 1.3.0-10 OK libXrender1 0.9.5-1 OK libXt6 1.0.7-1 OK links 1.00pre20-1 OK login 1.10-10 OK luit 1.0.5-1 OK lynx 2.8.5-4 OK man 1.6e-1 OK minires 1.02-1 OK mkfontdir 1.0.5-1 OK mkfontscale 1.0.7-1 OK openssh 5.4p1-1 OK openssl 0.9.8m-1 OK patch 2.5.8-9 OK patchutils 0.3.1-1 OK perl 5.10.1-3 OK rebase 3.0.1-1 OK run 1.1.12-11 OK screen 4.0.3-5 OK sed 4.1.5-2 OK shared-mime-info 0.70-1 OK tar 1.22.90-1 OK terminfo 5.7_20091114-13 OK terminfo0 5.5_20061104-11 OK texinfo 4.13-3 OK tidy 041206-1 OK time 1.7-2 OK tzcode 2009k-1 OK unzip 6.0-10 OK util-linux 2.14.1-1 OK vim 7.2.264-2 OK wget 1.11.4-4 OK which 2.20-2 OK wput 0.6.1-2 OK xauth 1.0.4-1 OK xclipboard 1.1.0-1 OK xcursor-themes 1.0.2-1 OK xemacs 21.4.22-1 OK xemacs-emacs-common 21.4.22-1 OK xemacs-sumo 2007-04-27-1 OK xemacs-tags 21.4.22-1 OK xeyes 1.1.0-1 OK xinit 1.2.1-1 OK xinput 1.5.0-1 OK xkbcomp 1.1.1-1 OK xkeyboard-config 1.8-1 OK xkill 1.0.2-1 OK xmodmap 1.0.4-1 OK xorg-docs 1.5-1 OK xorg-server 1.7.6-2 OK xrdb 1.0.6-1 OK xset 1.1.0-1 OK xterm 255-1 OK xz 4.999.9beta-10 OK zip 3.0-11 OK zlib 1.2.3-10 OK zlib-devel 1.2.3-10 OK zlib0 1.2.3-10 OK The ssh deamon configuration file: $ cat /etc/sshd_config # $OpenBSD: sshd_config,v 1.80 2008/07/02 02:24:18 djm Exp $ # This is the sshd server system-wide configuration file. See # sshd_config(5) for more information. # This sshd was compiled with PATH=/bin:/usr/sbin:/sbin:/usr/bin # The strategy used for options in the default sshd_config shipped with # OpenSSH is to specify options with their default value where # possible, but leave them commented. Uncommented options change a # default value. Port 22 #AddressFamily any #ListenAddress 0.0.0.0 #ListenAddress :: # Disable legacy (protocol version 1) support in the server for new # installations. In future the default will change to require explicit # activation of protocol 1 Protocol 2 # HostKey for protocol version 1 #HostKey /etc/ssh_host_key # HostKeys for protocol version 2 #HostKey /etc/ssh_host_rsa_key #HostKey /etc/ssh_host_dsa_key # Lifetime and size of ephemeral version 1 server key #KeyRegenerationInterval 1h #ServerKeyBits 1024 # Logging # obsoletes QuietMode and FascistLogging #SyslogFacility AUTH #LogLevel INFO # Authentication: #LoginGraceTime 2m #PermitRootLogin yes StrictModes no #MaxAuthTries 6 #MaxSessions 10 RSAAuthentication yes PubkeyAuthentication yes AuthorizedKeysFile .ssh/authorized_keys # For this to work you will also need host keys in /etc/ssh_known_hosts #RhostsRSAAuthentication no # similar for protocol version 2 #HostbasedAuthentication no # Change to yes if you don't trust ~/.ssh/known_hosts for # RhostsRSAAuthentication and HostbasedAuthentication #IgnoreUserKnownHosts no # Don't read the user's ~/.rhosts and ~/.shosts files #IgnoreRhosts yes # To disable tunneled clear text passwords, change to no here! #PasswordAuthentication yes #PermitEmptyPasswords no # Change to no to disable s/key passwords #ChallengeResponseAuthentication yes # Kerberos options #KerberosAuthentication no #KerberosOrLocalPasswd yes #KerberosTicketCleanup yes #KerberosGetAFSToken no # GSSAPI options #GSSAPIAuthentication no #GSSAPICleanupCredentials yes # Set this to 'yes' to enable PAM authentication, account processing, # and session processing. If this is enabled, PAM authentication will # be allowed through the ChallengeResponseAuthentication and # PasswordAuthentication. Depending on your PAM configuration, # PAM authentication via ChallengeResponseAuthentication may bypass # the setting of "PermitRootLogin without-password". # If you just want the PAM account and session checks to run without # PAM authentication, then enable this but set PasswordAuthentication # and ChallengeResponseAuthentication to 'no'. #UsePAM no AllowAgentForwarding yes AllowTcpForwarding yes GatewayPorts yes X11Forwarding yes X11DisplayOffset 10 X11UseLocalhost no #PrintMotd yes #PrintLastLog yes TCPKeepAlive yes #UseLogin no UsePrivilegeSeparation yes #PermitUserEnvironment no #Compression delayed #ClientAliveInterval 0 #ClientAliveCountMax 3 #UseDNS yes #PidFile /var/run/sshd.pid #MaxStartups 10 #PermitTunnel no #ChrootDirectory none # no default banner path #Banner none # override default of no subsystems Subsystem sftp /usr/sbin/sftp-server # Example of overriding settings on a per-user basis #Match User anoncvs #X11Forwarding yes #AllowTcpForwarding yes #ForceCommand cvs server I hope this information is enough to solve the problem. In case any more is needed please comment and I'll add it. Thank you for reading!

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• USE case to Class Diagram - How do I?

  - by 01010011

  Hi, I would like your guidance on how to create classes and their relationships (generalization, association, aggregation and composition) accurately from my USE case diagram (please see below). I am trying to create this class diagram so I can use it to create a simple online PHP application that allows the user to register an account, login and logout, and store, search and retrieve data from a MySQL database. Are my classes correct? Or should I create more classes? And if so, what classes are missing? What relationships should I use when connecting the register, login, logout, search_database and add_to_database to the users? I'm new to design patterns and UML class diagrams but from my understanding, the association relationship relates one object with another object; the aggregation relationship is a special kind of association that allows "a part" to belong to more than one "whole" (e.g. a credit card and its PIN - the PIN class can also be used in a debit card class); and a composition relationship is a special form of aggregation that allows each part to belong to only one whole at a time. I feel like I have left out some classes or something because I just can't seem to find the relationships from my understanding of relationships. Any assistance will be really appreciated. Thanks in advance. USE CASE DIAGRAM CLASS DIAGRAM

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• Hibernate/JPA and PostgreSQL - Primary Key?

  - by Shadowman

  I'm trying to implement some basic entities using Hibernate/JPA. Initially the code was deployed on MySQL and was working fine. Now, I'm porting it over to use PostgreSQL. In MySQL, my entity class defines its primary key as an auto-incrementing long value with the following syntax: @Id @GeneratedValue(strategy = GenerationType.AUTO) private Long id; However, I've found that I get errors with PostgreSQL when I try and insert numerous records at a time. What do I need to annotate my primary key with to get the same auto-incrementing behavior in PostgreSQL as I have with MySQL? Thanks for any help you can provide!

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• Separation of domain and ui layer in a composite

  - by hansmaad

  Hi all, i'm wondering if there is a pattern how to separate the domain logic of a class from the ui responsibilities of the objects in the domain layer. Example: // Domain classes interface MachinePart { CalculateX(in, out) // Where do we put these: // Draw(Screen) ?? // ShowProperties(View) ?? // ... } class Assembly : MachinePart { CalculateX(in, out) subParts } class Pipe : MachinePart { CalculateX(in, out) length, diamater... } There is an application that calculates the value X for machines assembled from many machine parts. The assembly is loaded from a file representation and is designed as a composite. Each concrete part class stores some data to implement the CalculateX(in,out) method to simulate behaviour of the whole assembly. The application runs well but without GUI. To increase the usability a GUi should be developed on top of the existing implementation (changes to the existing code are allowed). The GUI should show a schematic graphical representation of the assembly and provide part specific dialogs to edit several parameters. To achieve these goals the application needs new functionality for each machine part to draw a schematic representation on the screen, show a property dialog and other things not related to the domain of machine simulation. I can think of some different solutions to implement a Draw(Screen) functionality for each part but i am not happy with each of them. First i could add a Draw(Screen) method to the MachinePart interface but this would mix-up domain code with ui code and i had to add a lot of functionality to each machine part class what makes my domain model hard to read and hard to understand. Another "simple" solution is to make all parts visitable and implement ui code in visitors but Visitor does not belong to my favorite patterns. I could derive UI variants from each machine part class to add the UI implementation there but i had to check if each part class is suited for inheritance and had to be careful on changes to the base classes. My currently favorite design is to create a parallel composite hierarchy where each component stores data to define a machine part, has implementation for UI methods and a factory method which creates instances of the corresponding domain classes, so that i can "convert" a UI assembly to a domain assembly. But there are problems to go back from the created domain hierarchy to the UI hierarchy for showing calculation results in the drawing for example (imagine some parts store some values during the calculation i want to show in the schematic representation after the simluation). Maybe there are some proven patterns for such problems?

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