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• BizTalk: History of one project architecture

  - by Leonid Ganeline

  "In the beginning God made heaven and earth. Then he started to integrate." At the very start was the requirement: integrate two working systems. Small digging up: It was one system. It was good but IT guys want to change it to the new one, much better, chipper, more flexible, and more progressive in technologies, more suitable for the future, for the faster world and hungry competitors. One thing. One small, little thing. We cannot turn off the old system (call it A, because it was the first), turn on the new one (call it B, because it is second but not the last one). The A has a hundreds users all across a country, they must study B. A still has a lot nice custom features, home-made features that cannot disappear. These features have to be moved to the B and it is a long process, months and months of redevelopment. So, the decision was simple. Let’s move not jump, let’s both systems working side-by-side several months. In this time we could teach the users and move all custom A’s special functionality to B. That automatically means both systems should work side-by-side all these months and use the same data. Data in A and B must be in sync. That’s how the integration projects get birth. Moreover, the specific of the user tasks requires the both systems must be in sync in real-time. Nightly synchronization is not working, absolutely.   First draft The first draft seems simple. Both systems keep data in SQL databases. When data changes, the Create, Update, Delete operations performed on the data, and the sync process could be started. The obvious decision is to use triggers on tables. When we are talking about data, we are talking about several entities. For example, Orders and Items [in Orders]. We decided to use the BizTalk Server to synchronize systems. Why it was chosen is another story. Second draft   Let’s take an example how it works in more details. 1.       User creates a new entity in the A system. This fires an insert trigger on the entity table. Trigger has to pass the message “Entity created”. This message includes all attributes of the new entity, but I focused on the Id of this entity in the A system. Notation for this message is id.A. System A sends id.A to the BizTalk Server. 2.       BizTalk transforms id.A to the format of the system B. This is easiest part and I will not focus on this kind of transformations in the following text. The message on the picture is still id.A but it is in slightly different format, that’s why it is changing in color. BizTalk sends id.A to the system B. 3.       The system B creates the entity on its side. But it uses different id-s for entities, these id-s are id.B. System B saves id.A+id.B. System B sends the message id.A+id.B back to the BizTalk. 4.       BizTalk sends the message id.A+id.B to the system A. 5.       System A saves id.A+id.B. Why both id-s should be saved on both systems? It was one of the next requirements. Users of both systems have to know the systems are in sync or not in sync. Users working with the entity on the system A can see the id.B and use it to switch to the system B and work there with the copy of the same entity. The decision was to store the pairs of entity id-s on both sides. If there is only one id, the entities are not in sync yet (for the Create operation). Third draft Next problem was the reliability of the synchronization. The synchronizing process can be interrupted on each step, when message goes through the wires. It can be communication problem, timeout, temporary shutdown one of the systems, the second system cannot be synchronized by some internal reason. There were several potential problems that prevented from enclosing the whole synchronization process in one transaction. Decision was to restart the whole sync process if it was not finished (in case of the error). For this purpose was created an additional service. Let’s call it the Resync service. We still keep the id pairs in both systems, but only for the fast access not for the synchronization process. For the synchronizing these id-s now are kept in one main place, in the Resync service database. The Resync service keeps record as: ·       Id.A ·       Id.B ·       Entity.Type ·       Operation (Create, Update, Delete) ·       IsSyncStarted (true/false) ·       IsSyncFinished (true/false0 The example now looks like: 1.       System A creates id.A. id.A is saved on the A. Id.A is sent to the BizTalk. 2.       BizTalk sends id.A to the Resync and to the B. id.A is saved on the Resync. 3.       System B creates id.B. id.A+id.B are saved on the B. id.A+id.B are sent to the BizTalk. 4.       BizTalk sends id.A+id.B to the Resync and to the A. id.A+id.B are saved on the Resync. 5.       id.A+id.B are saved on the B. Resync changes the IsSyncStarted and IsSyncFinished flags accordingly. The Resync service implements three main methods: ·       Save (id.A, Entity.Type, Operation) ·       Save (id.A, id.B, Entity.Type, Operation) ·       Resync () Two Save() are used to save id-s to the service storage. See in the above example, in 2 and 4 steps. What about the Resync()? It is the method that finishes the interrupted synchronization processes. If Save() is started by the trigger event, the Resync() is working as an independent process. It periodically scans the Resync storage to find out “unfinished” records. Then it restarts the synchronization processes. It tries to synchronize them several times then gives up.     One more thing, both systems A and B must tolerate duplicates of one synchronizing process. Say on the step 3 the system B was not able to send id.A+id.B back. The Resync service must restart the synchronization process that will send the id.A to B second time. In this case system B must just send back again also created id.A+id.B pair without errors. That means “tolerate duplicates”. Fourth draft Next draft was created only because of the aesthetics. As it always happens, aesthetics gave significant performance gain to the whole system. First was the stupid question. Why do we need this additional service with special database? Can we just master the BizTalk to do something like this Resync() does? So the Resync orchestration is doing the same thing as the Resync service. It is started by the Id.A and finished by the id.A+id.B message. The first works as a Start message, the second works as a Finish message.     Here is a diagram the whole process without errors. It is pretty straightforward. The Resync orchestration is waiting for the Finish message specific period of time then resubmits the Id.A message. It resubmits the Id.A message specific number of times then gives up and gets suspended. It can be resubmitted then it starts the whole process again: waiting [, resubmitting [, get suspended]], finishing. Tuning up The Resync orchestration resubmits the id.A message with special “Resubmitted” flag. The subscription filter on the Resync orchestration includes predicate as (Resubmit_Flag != “Resubmitted”). That means only the first Sync orchestration starts the Resync orchestration. Other Sync orchestration instantiated by the resubmitting can finish this Resync orchestration but cannot start another instance of the Resync   Here is a diagram where system B was inaccessible for some period of time. The Resync orchestration resubmitted the id.A two times. Then system B got the response the id.A+id.B and this finished the Resync service execution. What is interesting about this, there were submitted several identical id.A messages and only one id.A+id.B message. Because of this, the system B and the Resync must tolerate the duplicate messages. We also told about this requirement for the system B. Now the same requirement is for the Resunc. Let’s assume the system B was very slow in the first response and the Resync service had time to resubmit two id.A messages. System B responded not, as it was in previous case, with one id.A+id.B but with two id.A+id.B messages. First of them finished the Resync execution for the id.A. What about the second id.A+id.B? Where it goes? So, we have to add one more internal requirement. The whole solution must tolerate many identical id.A+id.B messages. It is easy task with the BizTalk. I added the “SinkExtraMessages” subscriber (orchestration with one receive shape), that just get these messages and do nothing. Real design Real architecture is much more complex and interesting. In reality each system can submit several id.A almost simultaneously and completely unordered. There are not only the “Create entity” operation but the Update and Delete operations. And these operations relate each other. Say the Update operation after Delete means not the same as Update after Create. In reality there are entities related each other. Say the Order and Order Items. Change on one of it could start the series of the operations on another. Moreover, the system internals are the “black boxes” and we cannot predict the exact content and order of the operation series. It worth to say, I had to spend a time to manage the zombie message problems. The zombies are still here, but this is not a problem now. And this is another story. What is interesting in the last design? One orchestration works to help another to be more reliable. Why two orchestration design is more reliable, isn’t it something strange? The Synch orchestration takes all the message exchange between systems, here is the area where most of the errors could happen. The Resync orchestration sends and receives messages only within the BizTalk server. Is there another design? Sure. All Resync functionality could be implemented inside the Sync orchestration. Hey guys, some other ideas?

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• usb device in dual mode on gentoo linux

  - by Idlecool

  i am having a flip flop usb modem which has two modes 1 usb mass storage mode: root@devbox:/media/F872F0FD72F0C184/Users/idlecool/Downloads# lsusb Bus 006 Device 003: ID 19d2:fff5 ONDA Communication S.p.A. 2 usbserial mode: root@devbox:/media/F872F0FD72F0C184/Users/idlecool/Downloads# lsusb Bus 006 Device 003: ID 19d2:fffe ONDA Communication S.p.A. by default whenever i plug the modem to the usb port.. the linux machine recognize it as a usb mass storage device.. how can i make it load as usbserial device i have been using a package usb_modeswitch in the past on ubuntu 10.04 but i cannt install the same package on gentoo live cd.. even udev is not installed on live cd.. how to change the product-id of the usb device on gentoo live disc without udev.

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• jquery get form id by input id

  - by Mikk

  Hi, I have really basic question. How can I get form id by input element id. <form id="my_form"> <fieldset> <!--some <div>'s--> <input id="my_input"></div> <!--some <div>'s end--> </fieldset> </form> Now if I have var form_input = $('#my_input'); How can I get id "my_form"? Thank you.

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• Event ID for modified GPOs

  - by Hinek

  I have to know, who (usersid or loginname) changed a specified GPO for a specified OU in the Active Directory. Given our audit settings include this, what would be the right Event ID to look for?

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• matching an element's class to another element's ID, or *part* of another element's ID

  - by shecky

  hello again Such a simple concept but I'm struggling to express it ... apologies in advance for my verbosity. I have a container div with a class, e.g., ; I want to use that class to do two things: add a class (e.g., 'active') to the nav element whose ID matches the class of div#container (e.g., #nav-primary li# apples) add the same class to another element if part of this element's ID matches the class of #container (e.g., div#secondary-apples) I assume there's an .each() loop to check the primary nav's list items' IDs, and to check the div IDs of the secondary nav ... though the latter needs to have its prefix trimmed ... or should I say more simply if the secondary nav div IDs contain the class of div#container? I've tried a few variations of something like this: <script type="text/javascript"> $(document).ready(function() { $('#nav-primary li').each(function(){ var containerClass = $('#container').attr('class'); var secondaryID = $('#nav-primary li').attr('id'); // something like if ('#nav-primary li id' == (containerClass) { } // or should I first store a variable of the LI's ID and do something like this: if ( secondaryID == containerClass ) { } // and for the trickier part, how do I filter/trim the secondary nav div IDs, something like this: var secondaryNavID = $('#aux-left div[id ... something here to strip the 'secondary-' bit ... ]'); }); // end each }); // end doc.ready.func </script> The markup is, e.g.: ... ... ... ... ... ... ... Many thanks in advance for any suggestions, svs

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• How can I create a weekly calendar view for an Android Honeycomb application?

  - by BVB

  I am working on an Android (v3.0) application that has a requirement of mimicking the weekly calendar layout found on Google Calendar: The events will be based on external requests through the Google Calendar API (I already have this part working). Using the API, I can obtain a list of events for the week, with each event having a starting and and ending datetime. I would like to use this data to show the scheduled events to the application's users in a view similar to the one above. Here's what I have so far: The XML appears below: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="800dp" android:layout_height="match_parent" android:orientation="vertical" > <TextView android:id="@+id/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Calendar Title" android:textAppearance="?android:attr/textAppearanceLarge" /> <RelativeLayout android:id="@+id/relativeLayout1" android:layout_width="match_parent" android:layout_height="wrap_content" > <LinearLayout android:id="@+id/linearLayout1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_alignParentRight="true" android:layout_alignParentTop="true" > <TextView android:id="@+id/textView2" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:text="" /> <TextView android:id="@+id/textView3" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="2" android:gravity="center" android:text="Sunday" /> <TextView android:id="@+id/textView4" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="2" android:gravity="center" android:text="Monday" /> <TextView android:id="@+id/textView5" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="2" android:gravity="center" android:text="Tuesday" /> <TextView android:id="@+id/textView6" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="2" android:gravity="center" android:text="Wednesday" /> <TextView android:id="@+id/textView7" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="2" android:gravity="center" android:text="Thursday" /> <TextView android:id="@+id/textView8" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="2" android:gravity="center" android:text="Friday" /> <TextView android:id="@+id/textView9" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="2" android:gravity="center" android:text="Saturday" /> </LinearLayout> </RelativeLayout> <ScrollView android:id="@+id/scrollView1" android:layout_width="match_parent" android:layout_height="match_parent" android:padding="0dp" android:scrollbars="none" >" <RelativeLayout android:id="@+id/relativeLayout242" android:layout_width="match_parent" android:layout_height="wrap_content" android:padding="0dp" > <View android:background="#aaa" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="0dp"/> <View android:background="#aaa" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="40dp"/> <View android:background="#aaa" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="80dp"/> <View android:background="#aaa" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="120dp"/> <View android:background="#aaa" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="160dp"/> <View android:background="#aaa" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="200dp"/> <View android:background="#aaa" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="240dp"/> <View android:background="#aaa" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="280dp"/> <View android:background="#aaa" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="320dp"/> <View android:background="#aaa" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="360dp"/> <View android:background="#aaa" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="400dp"/> <View android:background="#aaa" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="440dp"/> <View android:background="#aaa" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="480dp"/> <View android:background="#aaa" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="520dp"/> <View android:background="#aaa" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="560dp"/> <View android:background="#aaa" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="600dp"/> <View android:background="#aaa" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="640dp"/> <View android:background="#aaa" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="680dp"/> <View android:background="#aaa" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="720dp"/> <View android:background="#aaa" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="760dp"/> <View android:background="#aaa" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="800dp"/> <View android:background="#aaa" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="840dp"/> <View android:background="#aaa" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="880dp"/> <View android:background="#aaa" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="920dp"/> <View android:background="#777" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="20dp"/> <View android:background="#777" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="60dp"/> <View android:background="#777" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="100dp"/> <View android:background="#777" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="140dp"/> <View android:background="#777" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="180dp"/> <View android:background="#777" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="220dp"/> <View android:background="#777" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="260dp"/> <View android:background="#777" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="300dp"/> <View android:background="#777" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="340dp"/> <View android:background="#777" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="380dp"/> <View android:background="#777" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="420dp"/> <View android:background="#777" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="460dp"/> <View android:background="#777" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="500dp"/> <View android:background="#777" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="540dp"/> <View android:background="#777" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="580dp"/> <View android:background="#777" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="620dp"/> <View android:background="#777" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="660dp"/> <View android:background="#777" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="700dp"/> <View android:background="#777" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="740dp"/> <View android:background="#777" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="780dp"/> <View android:background="#777" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="820dp"/> <View android:background="#777" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="860dp"/> <View android:background="#777" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="900dp"/> <View android:background="#777" android:layout_width = "fill_parent" android:layout_height="1dp" android:layout_marginTop="940dp"/> <LinearLayout android:id="@+id/linearLayout2" android:layout_width="match_parent" android:layout_height="wrap_content" android:padding="0dp" > <RelativeLayout android:id="@+id/relativeLayout2" android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1" android:padding="0dp" > <View android:background="#aaa" android:layout_width = "1dp" android:layout_height="fill_parent" android:layout_alignParentRight="true"/> <TextView android:id="@+id/textView10" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="0dp" android:gravity="center" android:text="12am" /> <TextView android:id="@+id/textView10" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="40dp" android:gravity="center" android:text="1am" /> <TextView android:id="@+id/textView10" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="80dp" android:gravity="center" android:text="2am" /> <TextView android:id="@+id/textView10" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="120dp" android:gravity="center" android:text="3am" /> <TextView android:id="@+id/textView10" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="160dp" android:gravity="center" android:text="4am" /> <TextView android:id="@+id/textView10" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="200dp" android:gravity="center" android:text="5am" /> <TextView android:id="@+id/textView10" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="240dp" android:gravity="center" android:text="6am" /> <TextView android:id="@+id/textView10" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="280dp" android:gravity="center" android:text="7am" /> <TextView android:id="@+id/textView10" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="320dp" android:gravity="center" android:text="8am" /> <TextView android:id="@+id/textView10" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="360dp" android:gravity="center" android:text="9am" /> <TextView android:id="@+id/textView10" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="400dp" android:gravity="center" android:text="10am" /> <TextView android:id="@+id/textView10" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="440dp" android:gravity="center" android:text="11am" /> <TextView android:id="@+id/textView10" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="480dp" android:gravity="center" android:text="12pm" /> <TextView android:id="@+id/textView10" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="520dp" android:gravity="center" android:text="1pm" /> <TextView android:id="@+id/textView10" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="560dp" android:gravity="center" android:text="2pm" /> <TextView android:id="@+id/textView10" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="600dp" android:gravity="center" android:text="3pm" /> <TextView android:id="@+id/textView10" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="640dp" android:gravity="center" android:text="4pm" /> <TextView android:id="@+id/textView10" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="680dp" android:gravity="center" android:text="5pm" /> <TextView android:id="@+id/textView10" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="720dp" android:gravity="center" android:text="6pm" /> <TextView android:id="@+id/textView10" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="760dp" android:gravity="center" android:text="7pm" /> <TextView android:id="@+id/textView10" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="800dp" android:gravity="center" android:text="8pm" /> <TextView android:id="@+id/textView10" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="840dp" android:gravity="center" android:text="9pm" /> <TextView android:id="@+id/textView10" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="880dp" android:gravity="center" android:text="10pm" /> <TextView android:id="@+id/textView10" android:layout_width="match_parent" android:layout_height="40dp" android:layout_marginTop="920dp" android:gravity="center|top" android:text="11pm" /> </RelativeLayout> <RelativeLayout android:id="@+id/relativeLayout3" android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="14" android:padding="0dp" > <LinearLayout android:id="@+id/linearLayout3" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_alignParentRight="true" android:layout_alignParentTop="true" android:padding="0dp" > <RelativeLayout android:id="@+id/relativeLayout4" android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1" > <View android:background="#00f" android:layout_width = "fill_parent" android:layout_height="180dp" android:layout_marginTop="180dp"/> <Button android:id="@+id/button1" android:layout_width="fill_parent" android:layout_height="180dp" android:layout_marginTop="180dp" android:text="Some Event" /> </RelativeLayout> <RelativeLayout android:id="@+id/relativeLayout5" android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1" > <View android:background="#00f" android:layout_width = "fill_parent" android:layout_height="180dp" android:layout_marginTop="280dp"/> <Button android:id="@+id/button1" android:layout_width="fill_parent" android:layout_height="180dp" android:layout_marginTop="280dp" android:text="Some Event" /> </RelativeLayout> <RelativeLayout android:id="@+id/relativeLayout6" android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1" > <View android:background="#00f" android:layout_width = "fill_parent" android:layout_height="60dp" android:layout_marginTop="40dp"/> <Button android:id="@+id/button1" android:layout_width="fill_parent" android:layout_height="60dp" android:layout_marginTop="40dp" android:text="Some Event" /> </RelativeLayout> <RelativeLayout android:id="@+id/relativeLayout7" android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1" > <View android:background="#00f" android:layout_width = "fill_parent" android:layout_height="90dp" android:layout_marginTop="60dp"/> <Button android:id="@+id/button1" android:layout_width="fill_parent" android:layout_height="90dp" android:layout_marginTop="60dp" android:text="Some Event" /> <View android:background="#00f" android:layout_width = "fill_parent" android:layout_height="120dp" android:layout_marginTop="340dp"/> <Button android:id="@+id/button1" android:layout_width="fill_parent" android:layout_height="120dp" android:layout_marginTop="340dp" android:text="Some Event" /> </RelativeLayout> <RelativeLayout android:id="@+id/relativeLayout8" android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1" > <View android:background="#00f" android:layout_width = "fill_parent" android:layout_height="180dp" android:layout_marginTop="380dp"/> <Button android:id="@+id/button1" android:layout_width="fill_parent" android:layout_height="180dp" android:layout_marginTop="380dp" android:text="Some Event" /> </RelativeLayout> <RelativeLayout android:id="@+id/relativeLayout9" android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1" > <View android:background="#00f" android:layout_width = "fill_parent" android:layout_height="180dp" android:layout_marginTop="480dp"/> <Button android:id="@+id/button1" android:layout_width="fill_parent" android:layout_height="180dp" android:layout_marginTop="480dp" android:text="Some Event" /> </RelativeLayout> <RelativeLayout android:id="@+id/relativeLayout10" android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1" > <View android:background="#00f" android:layout_width = "fill_parent" android:layout_height="180dp" android:layout_marginTop="340dp"/> <Button android:id="@+id/button1" android:layout_width="fill_parent" android:layout_height="180dp" android:layout_marginTop="340dp" android:text="Some Event" /> </RelativeLayout> </LinearLayout> </RelativeLayout> </LinearLayout> </RelativeLayout> </ScrollView> </LinearLayout> My approach was to make 40dp equal to 1 hr of time. Thus, whenever I would like to add an event that has a duration of 1.5 hours, I will make an 60dp button that I will place at the exact location that the time begins (12am = 0dp from the top, 1pm = 40dp from the top, 2pm = 80d from the top, etc). My questions are: Is there a better way of doing this? How can I convert my XML to be stand-alone view that could be added to any Android project? (I plan on perhaps making a blog post about the end product) Thank you!

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• Event ID: 861 - The Windows Firewall has detected an application listening for incoming traffic

  - by Chris Marisic

  Firstly, my machines aren't compromised any person suggesting such will be DV'd. The security logs on some of my networks client machines (all Windows Xp Sp3) get filled with these useless error messages. Security Failure Audit Detailed Tracking Event ID: 861 User: NT AUTHORITY\NETWORK SERVICE The Windows Firewall has detected an application listening for incoming traffic. Name: - Path: C:\WINDOWS\system32\svchost.exe Process identifier: 976 User account: NETWORK SERVICE User domain: NT AUTHORITY Service: Yes RPC server: No IP version: IPv4 IP protocol: UDP Port number: 55035 Allowed: No User notified: No It's always on various random ports of UDP so setting up a port exception isn't really an option. It's always from svchost or lsass both of which are running services from DLLs. One of the most offending processes seems to the be DnsCache. I have in my global policy under AT < Network < Network Connection < Widnows Firewall < Domain Profile (I haven't changed any standard profile options do both need configured? To allow remote administration and desktop exceptions and have a custom program exception list that has %SystemRoot%\system32\svchost.exe:*:enabled:svchost (Windows won't allow you to add this exception on a local machine but it let me have it on here in the global policy it just doesn't seem to do anything) %SystemRoot%\system32\lsass.exe:*enabled:lsass (I think this one ended all of my LSASS messages) %SystemRoot%\system32\dnsrslvr.dll:*:enabled:dnscache (I tried adding the dll itself to the exception list, this didn't seem to do anything) Is there really any other options left other than disabling the Windows Firewall entirely, disabling auditing entirely or just changing the event viewer to just auto overwrite when needed? I'd much rather fix the problem and get rid of these entries ever being created instead of just trying to cover up the problem.

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• Error while detecting start profile for instance with ID _u

  - by Techboy

  I am upgrading a SAP Java instance and am getting the error shown in the log below. There are not backup profile files in the profiles directory. The string _u does not exist in the default, start or instance profile for instance SCS01. Please can you suggest what the issue might be? Mar 13, 2010 12:09:01 PM [Info]: com.sap.sdt.ucp.phases.AbstractPhaseType.initializexAbstractPhaseType.javax758x [Thread[main,5,main]]: Phase PREPARE/INIT/DETERMINE_PROFILES has been started. Mar 13, 2010 12:09:01 PM [Info]: com.sap.sdt.ucp.phases.AbstractPhaseType.initializexAbstractPhaseType.javax759x [Thread[main,5,main]]: Phase type is com.sap.sdt.j2ee.phases.PhaseTypeDetermineProfiles. Mar 13, 2010 12:09:01 PM [Info]: ...ap.sdt.j2ee.phases.PhaseTypeDetermineProfiles.checkVariablesxPhaseTypeDetermineProfiles.javax284x [Thread[main,5,main]]: All 4 required variables exist in variable handler. Mar 13, 2010 12:09:01 PM [Info]: ....j2ee.tools.sysinfo.AbstractInfoController.updateProfileVariablexAbstractInfoController.javax302x [Thread[main,5,main]]: Parameter /J2EE/StandardSystem/DefaultProfilePath has been detected. Parameter value is \server1\SAPMNT\PI7\SYS\profile\DEFAULT.PFL. Mar 13, 2010 12:09:01 PM [Info]: com.sap.sdt.j2ee.tools.sysinfo.ProfileDetector.detectInstancexProfileDetector.javax340x [Thread[main,5,main]]: Instance SCS01 with profile \server1\SAPMNT\PI7\SYS\profile\PI7_SCS01_server1, start profile \server1\SAPMNT\PI7\SYS\profile\START_SCS01_server1, and host server1 has been detected. Mar 13, 2010 12:09:01 PM [Error]: com.sap.sdt.ucp.phases.AbstractPhaseType.doExecutexAbstractPhaseType.javax862x [Thread[main,5,main]]: Exception has occurred during the execution of the phase. Mar 13, 2010 12:09:01 PM [Error]: com.sap.sdt.j2ee.tools.sysinfo.ProfileDetector.detectInstancexProfileDetector.javax297x [Thread[main,5,main]]: Error while detecting start profile for instance with ID _u. Mar 13, 2010 12:09:01 PM [Info]: com.sap.sdt.ucp.phases.AbstractPhaseType.cleanupxAbstractPhaseType.javax905x [Thread[main,5,main]]: Phase PREPARE/INIT/DETERMINE_PROFILES has been completed. Mar 13, 2010 12:09:01 PM [Info]: com.sap.sdt.ucp.phases.AbstractPhaseType.cleanupxAbstractPhaseType.javax906x [Thread[main,5,main]]: Start time: 2010/03/13 12:09:01. Mar 13, 2010 12:09:01 PM [Info]: com.sap.sdt.ucp.phases.AbstractPhaseType.cleanupxAbstractPhaseType.javax908x [Thread[main,5,main]]: End time: 2010/03/13 12:09:01. Mar 13, 2010 12:09:01 PM [Info]: com.sap.sdt.ucp.phases.AbstractPhaseType.cleanupxAbstractPhaseType.javax909x [Thread[main,5,main]]: Duration: 0:00:00.078. Mar 13, 2010 12:09:01 PM [Info]: com.sap.sdt.ucp.phases.AbstractPhaseType.cleanupxAbstractPhaseType.javax910x [Thread[main,5,main]]: Phase status is error.

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• JQuery remove() not working with a two word id

  - by Programer

  I have a button <button onclick="takedown()"> take down </button> that creates a H1 and button with the id of the text in my text field and h1 at the end for the h1 and button at the end for the button the button has a onclick onclick="delete()". This is that function function takedown(){ note = document.getElementById("noteinput").value; idh1 = note + "h1"; idbutton = note + "button"; idcenter = note + "center"; $('<center id="' + idcenter + '"> <h1 id="' + idh1 + '">' + note + '</h1> <button id="'+ idbutton +'" onclick="deletenote()"> Delete </button> </center>').appendTo("body"); } For the delete function the remove() works only if the id of the button and the h1 is one word. function deletenote(){ // First setting var idbuttondelete = event.target.id; var idh1delete = idbuttondelete.replace("button", "h1"); // Removing the button, h1,center $('#' + idbuttondelete).remove(); $('#' + idh1delete).remove(); } Does anybody know whats wrong or how to use JQuery to delete something if it has a two word id.

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• Getting USB Storage Device Instance ID (unique ID) programmatically

  - by Navaneeth

  Whenever user plug a USB mass storage device, how to get the Device Instance ID (unique ID) of that particular device programmatically?

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• Find if id of a link equals id of parent container

  - by Robert Lawson

  Hi guys needing a bit of help. I am creating a one page personal site. Each section has a menu in it to jump to another section, however i want to have a class added to menu for the current section: i.e. if you are in about the about link would have a class 'current'. This is how it looks. <section id="about"> <nav> <li><a href="#" id ="about">About</a></li> <li><a href="#" id ="contact">About</a></li> <li><a href="#" id ="blog">About</a></li> </nav> New to jquery so i am struggling to find out how to do this. Any help will be greatly appreciated. Thanks

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• Querying my JPA provider (Hibernate) for a collection of <Id,Name> of an entity

  - by Ittai

  Hi, I have an entity which looks something like this: Id (PK) Name Other business properties and associations... I have the need for my DAL (JPA with hibernate as provider) to return a list of the entities which correlate to some constraints (or just return them all) but instead of returning the entities themselves I'd like to receive only the Id and the Name properties. I know this can be achieved with HQL/SQL (something like: select id,name from entity where...) but I don't want to go down that road. I was thinking of somehow defining the pair a compositioned part of the entity and thought that might help me but I'm not sure that's "legal" as the Id is the PK. The logic for this scenario is to have a textbox which asynchronously queries the web-service (and through it the DAL) for the relevant entities and once an entity is selected then it is loaded as a whole and shipped to the front-end. Would appreciate any feedback, Ittai

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• Drupal form with custom ID

  - by Andrew

  Correct me if I'm wrong, after reading drupal fapi related articles, I got the impression that fapi generates 'id' attributes by itself. It allows developers to assign 'name' attribute only. If that's the case, is there a way I can set desire 'id' value for elements? Because, I want my elements to have meaningful 'id' so that html/jquery code would be easier to read as well as save my time from going through already written jquery code to change those all 'id's that I've used inside. P.S:drupal version - 6.x

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• how to get vendor id and product id of a plugged usb device on windows

  - by new

  Hello all, I am using Qt on windows platform. i want to get and display vendor id and product id of a plugged usb device from my local system. Below is my full source code to get the vendor id and product id from the usb device. when i run the my qt application it does not throw me any errors . so i plug the usb device into the system. but my print statement displays the result as below qDebug ()<DevicePath; i get the result as 0x4 Whether i have any implementation mistakes in my source code ? if so please guide me what i am doing wrong.. Have i missed out any other functions ? Is it possible to get the vendor id and product id from the usb device based on my source code .( my implementation of the code ) ? kindly find my source code below static GUID GUID_DEVINTERFACE_USB_DEVICE = { 0xA5DCBF10L, 0x6530, 0x11D2, { 0x90, 0x1F, 0x00, 0xC0, 0x4F, 0xB9, 0x51, 0xED } }; HANDLE hInfo = SetupDiGetClassDevs(&GUID_DEVINTERFACE_USB_DEVICE,NULL,NULL,DIGCF_PRESENT | DIGCF_INTERFACEDEVICE); if ( hInfo == INVALID_HANDLE_VALUE ) { qDebug ()<<"invalid"; } else { qDebug ()<<"valid handle"; SP_DEVINFO_DATA DeviceInfoData; DeviceInfoData.cbSize = sizeof(SP_DEVINFO_DATA); SP_INTERFACE_DEVICE_DATA Interface_Info; Interface_Info.cbSize = sizeof(Interface_Info); BYTE Buf[1024]; DWORD i; DWORD InterfaceNumber= 0; PSP_DEVICE_INTERFACE_DETAIL_DATA pspdidd = (PSP_DEVICE_INTERFACE_DETAIL_DATA)Buf; for (i=0;SetupDiEnumDeviceInfo(hInfo,i,&DeviceInfoData);i++) { DWORD DataT; LPTSTR buffer = NULL; DWORD buffersize = 0; while (!SetupDiGetDeviceRegistryProperty( hInfo,&DeviceInfoData,SPDRP_DEVICEDESC,&DataT,(PBYTE)buffer,buffersize,&buffersize)) { if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) { // Change the buffer size. if (buffer) LocalFree(buffer); buffer = (LPTSTR)LocalAlloc(LPTR,buffersize); } else { // Insert error handling here. break; } qDebug ()<<(TEXT("Device Number %i is: %s\n"),i, buffer); if (buffer) LocalFree(buffer); if ( GetLastError()!=NO_ERROR && GetLastError()!=ERROR_NO_MORE_ITEMS ) { // Insert error handling here. qDebug ()<<"return false"; } InterfaceNumber = 0; // this just returns the first one, you can iterate on this if (SetupDiEnumDeviceInterfaces(hInfo,NULL,&GUID_DEVINTERFACE_USB_DEVICE,InterfaceNumber,&Interface_Info)) { printf("Got interface"); DWORD needed; pspdidd->cbSize = sizeof(*pspdidd); SP_DEVICE_INTERFACE_DETAIL_DATA *pDetData = NULL; DWORD dwDetDataSize = sizeof (SP_DEVICE_INTERFACE_DETAIL_DATA) + 256; SetupDiGetDeviceInterfaceDetail(hInfo, &Interface_Info, pDetData,dwDetDataSize, NULL,&DeviceInfoData); qDebug ()<<pDetData->DevicePath; //qDebug ()<<QString::fromWCharArray(pDetData->DevicePath); } else { printf("\nNo interface"); //ErrorExit((LPTSTR) "SetupDiEnumDeviceInterfaces"); if ( GetLastError() == ERROR_NO_MORE_ITEMS) printf(", since there are no more items found."); else printf(", unknown reason."); } // Cleanup SetupDiDestroyDeviceInfoList(hInfo); qDebug ()<<"return true"; } } }

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• Microsoft's New Beta for Composite Apps Services

  As Microsoft makes the latest beta of its Windows Server AppFabric available, it's urging developers to begin building composite applications that span both local servers and services in the cloud.

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• Microsoft Composite Apps Tools Near Release

  Microsoft unveils "release candidate" version of Windows Server AppFabric tools for building and maintaining composite applications. First beta of the new BizTalk Server also released.

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• How should I define a composite foreign key for domain constraints in the presence of surrogate keys

  - by Samuel Danielson

  I am writing a new app with Rails so I have an id column on every table. What is the best practice for enforcing domain constraints using foreign keys? I'll outline my thoughts and frustration. Here's what I would imagine as "The Rails Way". It's what I started with. Companies: id: integer, serial company_code: char, unique, not null Invoices: id: integer, serial company_id: integer, not null Products: id: integer, serial sku: char, unique, not null company_id: integer, not null LineItems: id: integer, serial invoice_id: integer, not null, references Invoices (id) product_id: integer, not null, references Products (id) The problem with this is that a product from one company might appear on an invoice for a different company. I added a (company_id: integer, not null) to LineItems, sort of like I'd do if only using natural keys and serials, then added a composite foreign key. LineItems (product_id, company_id) references Products (id, company_id) LineItems (invoice_id, company_id) references Invoices (id, company_id) This properly constrains LineItems to a single company but it seems over-engineered and wrong. company_id in LineItems is extraneous because the surrogate foreign keys are already unique in the foreign table. Postgres requires that I add a unique index for the referenced attributes so I am creating a unique index on (id, company_id) in Products and Invoices, even though id is simply unique. The following table with natural keys and a serial invoice number would not have these issues. LineItems: company_code: char, not null sku: char, not null invoice_id: integer, not null I can ignore the surrogate keys in the LineItems table but this also seems wrong. Why make the database join on char when it has an integer already there to use? Also, doing it exactly like the above would require me to add company_code, a natural foreign key, to Products and Invoices. The compromise... LineItems: company_id: integer, not null sku: integer, not null invoice_id: integer, not null does not require natural foreign keys in other tables but it is still joining on char when there is a integer available. Is there a clean way to enforce domain constraints with foreign keys like God intended, but in the presence of surrogates, without turning the schema and indexes into a complicated mess?

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• MySQL Select statement Where table1.id != table2.id

  - by Michael

  I have a table of data which has posts, then I have a separate table of data which has deleted posts. What happens when a post is deleted is that it's ID get's added to the deleted table rather than removing the post entry. What is a clean efficient way of selecting all the posts from the posts table without selecting the ones that have their ID in the deleted table

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• VB.net Unique Hardware ID ideas

  - by xzerox

  I was wondering if there would be anything else I could use in my Hardware ID protection that would make it much more unique. I am currently using Processor ID Volume ID Mac Address Graphics Card Name If you guys can provide source codes to anything else that would make it even more unique please tell me.

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• Have problem understanding the id/name of java bean

  - by symfony

  In an XmlBeanFactory (including ApplicationContext variants), you use the id or name attributes to specify the bean id(s), and at least one id must be specified in one or both of these attributes. Does it mean the following are legal? <bean id="test"> <bean name="test"> But this is illegal: <bean non_idnorname="test"> you may also or instead specify one or more bean ids (separated by a comma (,) or semicolon (;) via the name attribute. Does it mean I can specify multiple ids this way: <bean name="id1;id2,id3"> Can someone convince my doubt?

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• jQuery: rename duplicate id

  - by Tillebeck

  Hi I would like to insert multible sliders in one page. I have a block of code I would like to reuse but it will insert 2 DIV's with the id=slider... Is it possible to find second element with id=slider and rename to id=slider01? BR. Anders

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• jquery ui selectable get id?

  - by Grinart

  how to get 'id' of item in selectable list, if the list is created dunamically? <ul id="selectable"> <li id='1'>..</li> . . <li... </ul> I tried var num = $('#selecable :selected').attr( "option" , 'id' ); but get only [object Object]... what is the right way?

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• Setting a label's id in Zend_Form

  - by slkandy

  Hey, guys, I'm trying to set an id for one of my form's labels so I can hide it with jquery later. Here's my element: $password = new Zend_Form_Element_Password('password'); $password->setLabel('Password:') ->setRequired(true) ->addFilter('StripTags') ->addFilter('StringTrim') ->addValidator('NotEmpty') ->setAttrib( "id", "password" ); In the source, it looks like this: <dt> <label for="password" class="required">Password:</label> </dt> <dd> <input type="password" name="password" id="password" value=""> </dd> I need the label to look like: <label id="pass_label" for="password" class="required">Password:</label> Any ideas?

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• Hibernate, select by id or unique column

  - by Nican

  I am using hibernate for Java, and I want to be able to select users by id or by name from the database. Nice thing about Hibernate is that it caches the result by id, but I seem to be unable to make it cache by name. static Session openSession = Factory.openSession(); public static User GetUser(int Id) { return (User) openSession.get(User.class, new Integer(Id)); } public static User GetUser( String Name ){ return (User) openSession.createCriteria( User.class ). add( Restrictions.eq("username", Name) ). uniqueResult(); } If I use GetUser(1) many times, hibernate will only show that it executed the first time. But every time I use GetUser("user1"), hibernate shows that it is executing a new query to database. What would be the best way to have the string identifier be cached also?

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• Diff between <head id="Head1" runat="server"> and <asp:ContentPlaceHolder runat="server" ID="HeadCon

  - by justSteve

  Looking for an better understanding of how an mvc project should define javascript and css includes. I'm working with sample code where includes are defined like: <head id="Head1" runat="server"> <title><asp:ContentPlaceHolder ID="TitleContent" runat="server" />Affiliate Checkout</title> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /> <meta http-equiv="pragma" content="no-cache"> <script type="text/javascript" src="/Scripts/jquery.js"></script> <script type="text/javascript" src="/Scripts/jquery-ui-1.7.2.custom.min.js"></script> . . . <asp:ContentPlaceHolder runat="server" ID="HeadContent"></asp:ContentPlaceHolder> </head> I'm reading that to be that _all pages looking at this MasterPage will get jquery and jqueryUI and, additionally, each page will have the opportunity to add head elements thankx to the content placeholder HeadContent tag. The specific problem i'm troubleshooting is an instance where my rendered page is not including the 'prama no-cache' tag - as you see, it's defined in the upper level header section. Other .js and .css elements are making it into the rendered page so it very confusing to see that the no-cache tag isn't. When execute a 'View Generated Source' - the 'charset' is present the 'no-cache' is not.

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