bill 080 - Page 6 - Developer IT

OpenAL - determine maximum sources

- by Bill Kotsias

Is there an API that allows you to define the maximum number of OpenAL "sources" allowed by the underlying sound hardware? Searching the internet, I found 2 recommendations : keep generating OpenAL sources till you get an error. However, there is a note in FreeSL (OpenAL wrapper) stating that this is "very bad and may even crash the library" assume you only have 16; why would anyone ever require more? (!) The second recommendation is even adopted by FreeSL. So, is there a common API to define the number of simultaneous "voices" supported? Thank you for your time, Bill

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Is there a way to disable all other Java Scripts other than my own with Grease Monkey

- by DKinzer

I need help getting a Grease Monkey with JQuery Script to run on a broken site. I'm trying to get the following GM script to run, but the page I want it to work on has a JS error and my JS does not get executed. // ==UserScript== // @name BILL INFO PAGE ALTER // @namespace http://jenkinslaw.org // @description Alter the web page in order to pretty print // @include http://www.legis.state.pa.us/cfdocs/billinfo/bill_history.cfm?* // @require http://code.jquery.com/jquery-1.4.2.min.js // ==/UserScript== */ (function() { //Make a copy of the bill table var bill_table = $('.main_table').clone(); //empty the whole lot $(body).empty(); //append the bill back to the dom. $(body).append(bill_table); }()); Thanks! D

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AVG time spent on multiple rows SQL-server?

- by seo20

I have a table tblSequence with 3 cols in MS SQL: ID, IP, [Timestamp] Content could look like this: ID IP [Timestamp] -------------------------------------------------- 4347 62.107.95.103 2010-05-24 09:27:50.470 4346 62.107.95.103 2010-05-24 09:27:45.547 4345 62.107.95.103 2010-05-24 09:27:36.940 4344 62.107.95.103 2010-05-24 09:27:29.347 4343 62.107.95.103 2010-05-24 09:27:12.080 ID is unique, there can be n number of IP's. Would like to calculate the average time spent per IP. in a single row Know you can do something like this: SELECT CAST(AVG(CAST(MyTable.MyDateTimeFinish - MyTable.MyDateTimeStart AS float)) AS datetime) But how on earth do I find the first and last entry of my unique IP row so I can have a start and finish time? I'M stuck. Would like to calculate the average time spent per IP. in a single row

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iPhone not returning to application after calling eMail send

- by Bill

I am sending an email from within my iPhone application. The eMail page pops up ok, I click on the Send button, the iPhone plays a whoosh sound, and the eMail actually arrives at the recipient. Unfortunately, the mail dialog still sits there unresponsive, and the only option - to click the home button - kills the app. Is there something else that needs to be specified to close the eMailMessage view? MFMailComposeViewController *eMailMessage; NSArray *toAddress; if ([MFMailComposeViewController canSendMail]) { toAddress = [NSArray arrayWithObject:@"[email protected]"]; eMailMessage = [[MFMailComposeViewController alloc] init]; [eMailMessage setToRecipients:toAddress]; [eMailMessage setSubject:@"Notification"]; [eMailMessage setMessageBody:@"Performed by ..." isHTML:NO]; [self presentModalViewController:eMailMessage animated:YES]; [eMailMessage release]; }

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Rails: unexpected behavior updating a shared instance

- by Pascal Lindelauf

I have a User object, that is related to a Post object via two different association paths: Post --(has_many)-- comments --(belongs to)-- writer (of type User) Post --(belongs to)-- writer (of type User) Say the following hold: user1.name == "Bill" post1.comments[1].writer == user1 post1.writer == user1 Now when I retrieve the post1 and its comments from the database and I update post1.comments[1].writer like so: post1.comments[1].writer.name = "John" I would expect post1.writer to equal "John" too. But it doesn't! It still equals "Bill". So there seems to be some caching going on, but the kind I would not expect. I would expect Rails to be clever enough to load exactly one instance of the user with name "Bill"; instead is appears to load two individual ones: one for each association path. Can someone explain how this works exactly and how I am to handle these types of situations the "Rails way"?

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Printing All Entries in A PHP Table

- by mgunawan

I'm trying to insert a php excerpt with SQL (I understand this is outdated, but am trying to grasp the syntax first) into my HTML page, and I've got the following table: ID Name Element1 Element2 0 John John's 1st John's 2nd 1 Bill Bill's 1st Bill's 2nd 2 Steve Steven's 1st Steve's 2nd I'm trying to get the for loop that will essentially print out the following in my html page Name: Name where ID=0 Element1: Element1 where ID=0 Element2: Element2 where ID=0 Name: Name where ID=1 Element1: Element1 where ID=1 Element2: Element2 where ID=1 and so forth. Basically, I am trying to make this process automated so that whenever a new record is added into the table, the HTML page will automatically update with a new "profile". Thank you for your help!

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Remove successive 0th entries in args[] for a Java command line interface?

- by Bill IV

I recall seeing, somewhere, an example that stepped through String args[] by deleting the lowest numbered value(s) public static void main( String args[]) { while (args.length > 0 ) { // do something and obliterate elements from args[] } } Obviously, a variable tracking current position in args and compared to args.length will do it; or an ArrayList made from args[]'s contents, with argsAL.size(). Am I mis-remembering an ArrayList example? I know this is a borderline question, the likely answer is, "No, there isn't and there shouldn't be either!". Maybe I'm over-focused... Bill

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How to Get Control Panel Categories (Groups) on Windows Vista and Windows 7

- by Bill

Is there a way to get a listing of control panel categories on Windows Vista and Windows 7 using the shell? Is there a way to determine which category an applet is assigned to using conical Names using the shell? such as Microsoft.Mouse is in which category? I have some code that works nicely to display control panel applet names obtained from the shell in a TListView in a Vista Classic ungrouped list. I'd like to try to group the applet names in the TListView similar to Control Panel Classic Grouped by Category in Vista. Bill

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Android - creating a custom preferences activity screen

- by Bill Osuch

Android applications can maintain their own internal preferences (and allow them to be modified by users) with very little coding. In fact, you don't even need to write an code to explicitly save these preferences, it's all handled automatically! Create a new Android project, with an intial activity title Main. Create two more activities: ShowPrefs, which extends Activity Set Prefs, which extends PreferenceActivity Add these two to your AndroidManifest.xml file: <activity android:name=".SetPrefs"></activity> <activity android:name=".ShowPrefs"></activity> Now we'll work on fleshing out each activity. First, open up the main.xml layout file and add a couple of buttons to it: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <Button android:text="Edit Preferences" android:id="@+id/prefButton" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_horizontal"/> <Button android:text="Show Preferences" android:id="@+id/showButton" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_horizontal"/> </LinearLayout> Next, create a couple button listeners in Main.java to handle the clicks and start the other activities: Button editPrefs = (Button) findViewById(R.id.prefButton); editPrefs.setOnClickListener(new View.OnClickListener() { public void onClick(View view) { Intent myIntent = new Intent(view.getContext(), SetPrefs.class); startActivityForResult(myIntent, 0); } }); Button showPrefs = (Button) findViewById(R.id.showButton); showPrefs.setOnClickListener(new View.OnClickListener() { public void onClick(View view) { Intent myIntent = new Intent(view.getContext(), ShowPrefs.class); startActivityForResult(myIntent, 0); } }); Now, we'll create the actual preferences layout. You'll need to create a file called preferences.xml inside res/xml, and you'll likely have to create the xml directory as well. Add the following xml: <?xml version="1.0" encoding="utf-8"?> <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"> </PreferenceScreen> First we'll add a category, which is just a way to group similar preferences... sort of a horizontal bar. Add this inside the PreferenceScreen tags: <PreferenceCategory android:title="First Category"> </PreferenceCategory> Now add a Checkbox and an Edittext box (inside the PreferenceCategory tags): <CheckBoxPreference android:key="checkboxPref" android:title="Checkbox Preference" android:summary="This preference can be true or false" android:defaultValue="false"/> <EditTextPreference android:key="editTextPref" android:title="EditText Preference" android:summary="This allows you to enter a string" android:defaultValue="Nothing"/> The key is how you will refer to the preference in code, the title is the large text that will be displayed, and the summary is the smaller text (this will make sense when you see it). Let's say we've got a second group of preferences that apply to a different part of the app. Add a new category just below the first one: <PreferenceCategory android:title="Second Category"> </PreferenceCategory> In there we'll a list with radio buttons, so add: <ListPreference android:key="listPref" android:title="List Preference" android:summary="This preference lets you select an item in a array" android:entries="@array/listArray" android:entryValues="@array/listValues" /> When complete, your full xml file should look like this: <?xml version="1.0" encoding="utf-8"?> <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"> <PreferenceCategory android:title="First Category"> <CheckBoxPreference android:key="checkboxPref" android:title="Checkbox Preference" android:summary="This preference can be true or false" android:defaultValue="false"/> <EditTextPreference android:key="editTextPref" android:title="EditText Preference" android:summary="This allows you to enter a string" android:defaultValue="Nothing"/> </PreferenceCategory> <PreferenceCategory android:title="Second Category"> <ListPreference android:key="listPref" android:title="List Preference" android:summary="This preference lets you select an item in a array" android:entries="@array/listArray" android:entryValues="@array/listValues" /> </PreferenceCategory> </PreferenceScreen> However, when you try to save it, you'll get an error because you're missing your array definition. To fix this, add a file called arrays.xml in res/values, and paste in the following: <?xml version="1.0" encoding="utf-8"?> <resources> <string-array name="listArray"> <item>Value 1</item> <item>Value 2</item> <item>Value 3</item> </string-array> <string-array name="listValues"> <item>1</item> <item>2</item> <item>3</item> </string-array> </resources> Finally (for the preferences screen at least...) add the code that will display the preferences layout to the SetPrefs.java file: @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); addPreferencesFromResource(R.xml.preferences); } OK, so now we've got an activity that will set preferences, and save them without the need to write custom save code. Let's throw together an activity to work with the saved preferences. Create a new layout called showpreferences.xml and give it three Textviews: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <TextView android:id="@+id/textview1" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="textview1"/> <TextView android:id="@+id/textview2" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="textview2"/> <TextView android:id="@+id/textview3" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="textview3"/> </LinearLayout> Open up the ShowPrefs.java file and have it use that layout: setContentView(R.layout.showpreferences); Then add the following code to load the DefaultSharedPreferences and display them: SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this); TextView text1 = (TextView)findViewById(R.id.textview1); TextView text2 = (TextView)findViewById(R.id.textview2); TextView text3 = (TextView)findViewById(R.id.textview3); text1.setText(new Boolean(prefs.getBoolean("checkboxPref", false)).toString()); text2.setText(prefs.getString("editTextPref", "<unset>"));; text3.setText(prefs.getString("listPref", "<unset>")); Fire up the application in the emulator and click the Edit Preferences button. Set various things, click the back button, then the Edit Preferences button again. Notice that your choices have been saved. Now click the Show Preferences button, and you should see the results of what you set: There are two more preference types that I did not include here: RingtonePreference - shows a radioGroup that lists your ringtones PreferenceScreen - allows you to embed a second preference screen inside the first - it opens up a new set of preferences when clicked

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ATG Live Webcast Event - EBS 12 OAF Rich UI Enhancements

- by Bill Sawyer

The E-Business Suite Applications Technology Group (ATG) participates in several conferences a year, including Oracle OpenWorld in San Francisco and OAUG/Collaborate. We announce new releases, roadmaps, updates, and other news at these events. These events are exciting, drawing thousands of attendees, but it's clear that only a fraction of our EBS users are able to participate. We touch upon many of the same announcements here on this blog, but a blog article is necessarily different than an hour-long conference session. We're very interested in offering more in-depth technical content and the chance to interact directly with senior ATG Development staff. New ATG Live Webcast series -- free of charge As part of that initiative, I'm very pleased to announce that we're launching a new series of free ATG Live Webcasts jointly with Oracle University. Our goal is to provide solid, authoritative coverage of some of the latest ATG technologies, broadcasting live from our development labs to you. Our first event is titled: The Latest E-Business Suite R12.x OA Framework Rich User Interface Enhancements This live one-hour webcast will offer a comprehensive review of the latest user interface enhancements and updates to OA Framework in EBS 12. Developers will get a detailed look at new features designed to enhance usability, offer more capabilities for personalization and extensions, and support the development and use of dashboards and web services. Topics will include new rich user interface (UI) capabilities such as:

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ATG Live Webcast Feb. 24th: Using the EBS 12 SOA Adapter

- by Bill Sawyer

Our next ATG Live Webcast is now open for registration. The event is titled:E-Business Suite R12.x SOA Using the E-Business Suite AdapterThis live one-hour webcast will offer a review of the Service Oriented Architecture (SOA) capabilities within E-Business Suite R12 focusing on the E-Business Suite Adapter. While primarily focused on integrators and developers, understanding SOA capabilities is important for all E-Business Suite technologists and superusers.ATG Live Webcast Logistics The one-hour event will be webcast live with a dial-in access for Q&A with the Applications Technology Group (ATG) Development experts presenting the event. The basic information for the event is as follows:E-Business Suite R12.x SOA Using the E-Business Suite AdapterDate: Thursday, February 24, 2011Time: 8:00 AM - 9:00 AM Pacific Standard TimePresenters: Neeraj Chauhan, Product Manager, ATG DevelopmentNOTE: When you register for the event, the confirmation will show the event starting at 7:30 AM Pacific Standard Time. This is to allow you time to connect to the conference call and web conference. The presentation will start at 8:00 AM Pacfic Standard Time.

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Lessons from a SAN Failure

- by Bill Graziano

At 1:10AM Sunday morning the main SAN at one of my clients suffered a “partial” failure. Partial means that the SAN was still online and functioning but the LUNs attached to our two main SQL Servers “failed”. Failed means that SQL Server wouldn’t start and the MDF and LDF files mostly showed a zero file size. But they were online and responding and most other LUNs were available. I’m not sure how SANs know to fail at 1AM on a Saturday night but they seem to. From a personal standpoint this worked out poorly: I was out with friends and after more than a few drinks. From a work standpoint this was about the best time to fail you could imagine. Everything was running well before Monday morning. But it was a long, long Sunday. I started tipsy, got tired and ended up hung over later in the day. Note to self: Try not to go out drinking right before the SAN fails. This caught us at an interesting time. We’re in the process of migrating to an entirely new set of servers so some things were partially moved. This made it difficult to follow our procedures as cleanly as we’d like. The benefit was that we had much better documentation of everything on the server. I would encourage everyone to really think through the process of implementing your DR plan and document as much as possible. Following a checklist is much easier than trying to remember at night under pressure in a hurry after a few drinks. I had a series of estimates on how long things would take. They were accurate for any single server failure. They weren’t accurate for a SAN failure that took two servers down. This wasn’t bad but we should have communicated better. Don’t forget how many things are outside the database. Logins, linked servers, DTS packages (yikes!), jobs, service broker, DTC (especially DTC), database triggers and any objects in the master database are all things you need backed up. We’d done a decent job on this and didn’t find significant problems here. That said this still took a lot of time. There were many annoyances as a result of this. Small settings like a login’s default database had a big impact on whether an application could run. This is probably the single biggest area of concern when looking to recreate a server. I’d encourage everyone to go through every single node of SSMS and look for user created objects or settings outside the database. Script out your logins with the proper SID and already encrypted passwords and keep it updated. This makes life so much easier. I used an approach based on KB246133 that worked well. I’ll get my scripts posted over the next few days. The disaster can cause your DR process to fail in unexpected ways. We have a job that scripts out all logins and role memberships and writes it to a file. This runs on the DR server and pulls from the production server. Upon opening the file I found that the contents were a “server not found” error. Fortunately we had other copies and didn’t need to try and restore the master database. This now runs on the production server and pushes the script to the DR site. Soon we’ll get it pushed to our version control software. One of the biggest challenges is keeping your DR resources up to date. Any server change (new linked server, new SQL Server Agent job, etc.) means that your DR plan (and scripts) is out of date. It helps to automate the generation of these resources if possible. Take time now to test your database restore process. We test ours quarterly. If you have a large database I’d also encourage you to invest in a compressed backup solution. Restoring backups was the single larger consumer of time during our recovery. And yes, there’s a database mirroring solution planned in our new architecture. I didn’t have much involvement in things outside SQL Server but this caused many, many things to change in our environment. Many applications today aren’t just executables or web sites. They are a combination of those plus network infrastructure, reports, network ports, IP addresses, DTS and SSIS packages, batch systems and many other things. These all needed a little bit of attention to make sure they were functioning properly. Profiler turned out to be a handy tool. I started a trace for failed logins and kept that running. That let me fix a number of problems before people were able to report them. I also ran traces to capture exceptions. This helped identify problems with linked servers. Overall the thing that gave me the most problem was linked servers. In order for a linked server to function properly you need to be pointed to the right server, have the proper login information, have the network routes available and have MSDTC configured properly. We have a lot of linked servers and this created many failure points. Some of the older linked servers used IP addresses and not DNS names. This meant we had to go in and touch all those linked servers when the servers moved.

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Making Money from your SQL Server Blog

- by Bill Graziano

My SQL Server blog reading list is around one hundred blogs. Many people are writing great content and generating lots of page views. I see some of them running Google AdSense and trying to make a little money off their traffic. If you want to earn some some extra money from what you’ve written there are a couple of options. And one new option that I’m announcing here. Background Internet advertising is sold based on a few different pricing schemes. Flat Fee. You offer either all your impressions (page views) or some percentage of your impressions in exchange for a flat monthly fee. CPM or cost per thousand impressions. If the quoted price is $2 CPM you’ll get $2 for every 1,000 times the ad is displayed. While you might think the “M” means millions, the “M” in CPM is the roman numeral for 1,000. CPC or cost per click. This is also called PPC or pay per click. In this method you get paid based on how many clicks there are on the ad. CPA or cost per action. In this method you get paid based on an action that occurs on the advertisers site after they click on the ad. This is typically some type of sign up form. This is how most affiliate programs work. Darren Rowse at ProBlogger has been writing about blogging and making money off blogs for years. He has a good introduction to making money on your blog in his “Making Money” section. If you’re interested in learning more he has a post up titled How to Make More Money From Your Blog in the New Year that links to many of his best posts on the subject. Google AdSense This is the most common method for people earning money from their blogging. It’s easy to setup and administer. You tell AdSense what size ads you’d like to run and it gives you a little piece of JavaScript to put on your site. AdSense quickly learns the topics you write about and displays ads that are appropriate for your site. I typically see ads for hosting, SQL Server tools and developer tools running in AdSense slots. AdSense pays on a CPC model. If you translate that back to CPM pricing you’ll see rates from $0.50 to $1.00 CPM. Amazon While you might not make much money writing books it’s now possible to make even less helping Amazon sell them. You can sign up for an Amazon affiliate program. Each time you send Amazon a link and someone buys the book you get a cut of that sale. This is the CPA model from above. Amazon can help you build some pretty nice “stores”. Here’s the SQL Server bookstore I built for SQLTeam.com. If you’re just putting in a page with books like I’ve done on SQLTeam you should keep your expectations low. If you’re writing book reviews of suggesting books on your blog it really does make sense to setup an Amazon affiliate link. People are much more likely to buy a book based on a review from a trusted source. I always try to buy through a referral link if there is one. Amazon pays about 4% of the price as a referral fee. You also get credit for anything else they buy while on the site. I recently had someone buy an iPod nano with their SQL Server book making me an extra $5.60 richer! Estimating how much you can make is difficult though. How much attention you draw to the links and book reviews can dramatically affect the earnings. Private Ad Sales This is the hardest but potentially most lucrative option. You sell advertising directly to companies that want to sell things to your readers. Typically this would be SQL Server tool vendors, hosting companies or anyone else that wants to make money off database administrators. This is also the most difficult to do. You’ll need the contacts at the companies and enough page views to make it worth their while. You’ll also need software to track the page views and clicks, geo-target your ads and smooth out the impressions. Your earnings are based on whatever you can negotiate with the companies. SQL Server Ad Network For the last couple of years I’ve run any extra ads that I sold on the SQLTeam Weblogs. You can see an example of that on Mladen’s blog. The ad in the upper right corner is one that I’m running for him. (Note: Many of the ads I’m running are geo-targeted to only appear in English speaking countries. You may see a different set of ads outside the US, Canada and the UK. You can also see he has a couple of Google ads on his blog.) When I run ads on his blog I split the advertising revenue with him. They make a little and I make a little. I recently started to expand this and sell advertising specifically to run on SQL Server-related blogs. I’m also starting to run ads on non-SQLTeam blogs. The only way I can sell more advertising is to have more blogs to run it on. And that’s where you come in. I’ve created a SQL Server advertising network. I handle all the ad sales and provide the technology to serve the ads. I handle collections and payments back to you. You get paid at the end of each month regardless of when (or if) the advertiser actually pays. All you need to do is add a small piece of JavaScript to your site to display the ads. If you’re writing about SQL Server and interested in earning a little money for your site I’d like to talk to you. You can use the Contact Us page on SQLTeam.com to reach me. Running advertising on your blog isn’t for everyone. If you’re concerned about what advertisers might think about certain posts then you might not be a good fit. For the most part this isn’t an issue. You’ll also need to have a PayPal account to receive payments. You probably won’t get rich doing this. But you can earn extra cash on the side for doing what you would do anyway. I do know that people have earned enough to buy themselves a nice laptop doing this. My initial target is blogs with more than 10,000 page views per month. I expect to pay two to three times what Google pays. If you have less than 10,000 page views per month but are still interested I’d still like to hear from you. I may not be able to sign up smaller blogs right away but we’ll get the process started. If you’re unsure about your traffic Google Analytics is a free tool that provides great reporting on traffic, popular posts and how people find your blog. If you have any questions or are just curious drop me a line and I’ll try to answer your questions.

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SQL Server Scripts I Use

- by Bill Graziano

When I get to a new client I usually find myself using the same set of scripts for maintenance and troubleshooting. These are all drop in solutions for various maintenance issues. Reindexing. I use Michelle Ufford’s (SQLFool) re-indexing script. I like that it has a throttle and only re-indexes when needed. She also has a variety of other interesting scripts on her blog too. Server Activity. Adam Machanic is up to version 10 of sp_WhoIsActive. It’s a great replacement for the sp_who* stored procedures and does so much more. If a server is acting funny this is one of the first tools I use. Backups. Tara Kizer has a great little T-SQL script for SQL Server backups. Wait Stats. Paul Randal has a great script to display wait stats. The biggest benefit for me is that his script filters out at least three dozen wait stats that I just don’t care about (for example LAZYWRITER_SLEEP). Update Statistics. I didn’t find anything I liked so I wrote a simple script to update stats myself. The big need for me was that it had to run inside a time window and update the oldest statistics first. Is there a better one? Diagnostic Queries. Glenn Berry has a huge collection of DMV queries available. He also just highlighted five of them including two I really like dealing with unused indexes and suggested indexes. Single Use Query Plans. Kim Tripp has a script that counts the number of single-use query plans. This should guide you in whether to enable the Optimize for Adhoc Workloads option in SQL Server 2008. Granting Permissions to Developers. This is one of those scripts I didn’t even know I needed until I needed it. Kendra Little wrote it to grant a login read-only permission to all the databases. It also grants view server state and a few other handy permissions. What else do you use? What should I add to my list?

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How to run developer team meetings?

- by Bill Iacocca

Our team of 10 developers meet weekly. The meetings are rather boring and not particularly useful. What format/agenda do you utilize to have good meetings? We meet weekly in the conference room with pizza provided. The format is we go around the room and list the status of various tasks we are working on and discuss tasks for the next week. Managers will provide an overview of upcoming projects and priorities for the coming months and year ahead. Update The goal of these meeting is more or less - general team building, to share the knowledge of what everyone is working on, and to keep everyone aware of shifting company initiatives. It is not to formally 'hand out' work assignments (that is done via other means).

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Collision filtering by object, team

- by Bill Zimmerman

Hi, I am looking for a good method to determine which objects will be considered for collision with other objects. My current idea is that each object has the following properties: alwaysCollidesWith = [list of objects that will always trigger a collision check] neverCollidesWith = [lost of objects that will never be considered] teamCollidesWith = [list of objects that will be checked, provided they belong to a different team] For example: -projectiles never have to be checked for collisions with other projectiles -players are always checked for collisions with players, regardless of team -projectiles are only considered for collisions if they collide with another teams players Does anyone see any weaknesses with this approach? Can anyone recommend a better approach?

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Extending UPK with Enablement Packs

- by bill.x.miller

We've mentioned in earlier posts that UPK Development keeps the tool up to date through the use of Enable Service Packs (ESP'S). Regular releases ensure that the UPK Developer supports updates to targeted applications as well as new Java updates. Installing an ESP is quick and easy. • Download the latest ESP from My Oracle Support (requires a My Oracle Support account). • Run the setup for each client machine that uses the UPK Developer • Run the Library Updates from one of the clients (multi-user only) Enablement Pack 1 for UPK 3.6.1 contains new features such as a new Tabbed Gateway, FireFox 3.6 support for the Player and SmartHelp, and several new target application versions. But a very exciting feature that is part of this ESP is now available to all Oracle E-Business Suite customers. Until now, a requirement for EBS customers who wish to record UPK content is to install delivered library files (CUSTOM.pll and ODPN.pll) on to the Oracle Application Server. These files were required to present context information to the UPK Developer so that content can be launched in a context sensitive manner. This requirement involved the Oracle system administrator to transfer, install and compile these libraries into the system. Usually a simple process, however, we understood the need to streamline the procedure. With ESP 1 for UPK 3.6.1, these pll files are no longer required. Now, a simple procedure from within the EBS application can make context available to the UPK recorder. From the System Profile, search for UPK: Change the Site field to Enable UPK Recording. Save the Form. Context information will now be made available to the UPK Recorder without involving the System Administrator or DBA. The setting you see here makes context available to all client machines recording content with UPK and does not affect the performance of your EBS application.

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Digital Storage for Airline Entertainment

- by Bill Evjen

by Thomas Coughlin Common flash memory cards The most common flash memory products currently in use are SD cards and derivative products (e.g. mini and micro-SD cards) Some compact flash used for professional applications (such as DSLR cameras) Evolution of leading flash formats Standardization –> market expansion Market expansion –> volume iNAND –> focus is on enabling embedded X3 iSSD –> ideal for thin form factor devices Flash memory applications Phones are the #1 user of flash memory Flash memory is used as embedded and removable storage in many mobile applications Flash memory is being used in computers as USB sticks and SSDs Possible use of flash memory in computer combined with HDDs (hybrid HDDs and paired or dual storage computers) It can be a removable card or an embedded card These devices can only handle a specific number of writes Flash memory reads considerably quicker than hard drives Hybrid and dual storage in computers SSDs can provide fast performance but they are expensive HDDs can provide cheap storage but they are relatively slow Combining some flash memory with a HDD can provide costs close to those of HDDs and performance close to flash memory Seagate Momentus XT hybrid HDD Various dual storage offerings putting flash memory with HDDs Other common flash memory devices USB sticks All forms and colors Used for moving files around Some sold with content on them (Sony Movies on USB sticks) Solid State Drives (SSDs) Floating Gate Flash Memory Cell When a bit is programmed, electrons are stored upon the floating gate This has the effect of offsetting the charge on the control gate of the transistor If there is no charge upon the floating gate, then the control gate’s charge determines whether or not a current flows through the channel A strong charge on the control gate assumes that no current flows. A weak charge will allow a strong current to flow through. Similar to HDDs, flash memory must provide: Bit error correction Bad block management NAND and NOR memories are treated differently when it comes to managing wear In many NOR-based systems no management is used at all, since the NOR is simply used to store code, and data is stored in other devices. In this case, it would take a near-infinite amount of time for wear to become an issue since the only time the chip would see an erase/write cycle is when the code in the system is being upgraded, which rarely if ever happens over the life of a typical system. NAND is usually found in very different application than is NOR Flash memory wears out This is expected to get worse over time Retention: Disappearing data Bits fade away Retention decreases with increasing read/writes Bits may change when adjacent bits are read Time and traffic are concerns Controllers typically groom read disturb errors Like DRAM refresh Increases erase/write frequency Application characteristics Music – reads high / writes very low Video – r high / writes very low Internet Cache – r high / writes low On airplanes Many consumers now have their own content viewing devices – do they need the airlines? Is there a way to offer more to consumers, especially with their own viewers Additional special content tie into airplane network access to electrical power, internet Should there be fixed embedded or removable storage for on-board airline entertainment? Is there a way to leverage personal and airline viewers and content in new and entertaining ways?

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First steps into css - aligning data insite one DIV [on hold]

- by Andrew

I am trying to move away from tables, and start doing CSS. Here is my HTML code that I currently trying to place into a nice looking container. <div> <div> <h2>ID: 4000 | SSN#: 4545</h2> </div> <div> <img src="./images/tenant/unknown.png"> </div> <div> <h3>Names Used</h3> Will Smith<br> Bill Smmith<br> John Smith<br> Will Smith<br> Bill Smmith<br> John Smith<br> Will Smith<br> Bill Smmith<br> John Smith<br> </div> <div> <h3>Phones Used</h3> 123456789<br> 123456789<br> 123456789<br> 123456789<br> 123456789<br> 123456789<br> 123456789<br> 123456789<br> </div> <div> <h3>Addresses Used</h3> 125 Main Evanston IL 60202<br> 465 Greenwood St. Schaumburg null 60108<br> 125 Main Evanston IL 60202<br> 465 Greenwood St. Schaumburg null 60108<br> 125 Main Evanston IL 60202<br> 465 Greenwood St. Schaumburg null 60108<br> 125 Main Evanston IL 60202<br> 465 Greenwood St. Schaumburg null 60108<br> 125 Main Evanston IL 60202<br> 465 Greenwood St. Schaumburg null 60108<br> </div> </div> I now understand now I create classes and assign classes to elements. I have no issues doing colors. But I am very confused with elements alignments. Could you suggest a nice way to pack it together with some CSS which I can analyze and take as a CSS starting learning point?

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Can LittleBigPlanet2's engine be used for other ?

- by Bill

LittleBigPlanet2 just came out. I've worked with the original LBP level editor a bit and really enjoyed it. I've read that LBP2's featureset in the game is much richer; is it possible to use these advanced features to create different sorts of game other than just a regular platformer? I imagine that something along the lines of a Breakout clone would definitely be manageable, but I'm interested in hearing more about the capabilities of the platform.

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Changing the BizTalk message output file name

- by Bill Osuch

By default, BizTalk creates the filename of the message dropped to a send port as %MessageID%, which is the unique identifier (GUID) of the message. What if you want to create your own filename? To start, create a simple schema, and a basic orchestration that will receive the message and send it right back out, like this: If you deploy this and wire up the ports, you can drop an xml file into your receive port and have it come out at your send port named something like {7A63CAF8-317B-49D5-871F-9FD57910C3A0}.xml. Now, we'll create a new message with a custom filename. First, create a new orchestration variable called NewFileName, of the type System.String. Next, create a second message using the same schema as the message you're receiving in the Receive shape. Now, drag a Construct Message shape to the orchestration. In the shape's properties, set Messages Constructed to be the new message you just created. Double click the Message Assignment shape (inside the Construct shape...) and paste in the following code: Message_2 = Message_1; NewFileName = Message_1(FILE.ReceivedFileName); NewFileName = NewFileName.Replace(".xml","_"); NewFileName = NewFileName + "output_" + System.DateTime.Now.Year.ToString() + "-" + System.DateTime.Now.Month.ToString(); Message_2(FILE.ReceivedFileName) = NewFileName; Here we make a copy of the received message, get it's original file name (ReceivedFileName), replace its extension with an underscore, and date-stamp it. Finally, add a Send shape and a Port to the surface, and configure them to send the message you just created. You should wind up with an orchestration like this: Deploy it, and create a new send port. It should be just about identical to the first send port, except this time the file name will be "%SourceFileName%.xml" (without the quotes of course). Fire up the application, drop in a test file, and you should now get both the xml file named with a GUID, and a second file named something along the lines of "MySchemaTestFile_output_2011-6.xml".

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Getting SQL table row counts via sysindexes vs. sys.indexes

- by Bill Osuch

Among the many useful SQL snippets I regularly use is this little bit that will return row counts in a table: SELECT so.name as TableName, MAX(si.rows) as [RowCount] FROM sysobjects so JOIN sysindexes si ON si.id = OBJECT_ID(so.name) WHERE so.xtype = 'U' GROUP BY so.name ORDER BY [RowCount] DESC This is handy to find tables that have grown wildly, zero-row tables that could (possibly) be dropped, or other clues into the data. Right off the bat you may spot some "non-ideal" code - I'm using sysobjects rather than sys.objects. What's the difference? In SQL Server 2005 and later, sysobjects is no longer a table, but a "compatibility view", meant for backward compatibility only. SELECT * from each and you'll see the different data that each returns. Microsoft advises that sysindexes could be removed in a future version of SQL Server, but this has never really been an issue for me since my company is still using SQL 2000. However, there are murmurs that we may actually migrate to 2008 some year, so I might as well go ahead and start using an updated version of this snippet on the servers that can handle it: SELECT so.name as TableName, ddps.row_count as [RowCount] FROM sys.objects so JOIN sys.indexes si ON si.OBJECT_ID = so.OBJECT_ID JOIN sys.dm_db_partition_stats AS ddps ON si.OBJECT_ID = ddps.OBJECT_ID AND si.index_id = ddps.index_id WHERE si.index_id < 2 AND so.is_ms_shipped = 0 ORDER BY ddps.row_count DESC

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Android - passing data between Activities

- by Bill Osuch

(To follow along with this, you should understand the basics of starting new activities: Link ) The easiest way to pass data from one activity to another is to create your own custom bundle and pass it to your new class. First, create two new activities called Search and SearchResults (make sure you add the second one you create to the AndroidManifest.xml file!), and create xml layout files for each. Search's file should look like this: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical"> <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="Name:"/> <EditText android:id="@+id/edittext" android:layout_width="fill_parent" android:layout_height="wrap_content"/> <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="ID Number:"/> <EditText android:id="@+id/edittext2" android:layout_width="fill_parent" android:layout_height="wrap_content"/> <Button android:id="@+id/btnSearch" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="Search" /> </LinearLayout> and SearchResult's should look like this: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical"> <TextView android:id="@+id/txtName" android:layout_width="fill_parent" android:layout_height="wrap_content"/> <TextView android:id="@+id/txtState" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="No data"/> </LinearLayout> Next, we'll override the OnCreate method of Search: @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.search); Button search = (Button) findViewById(R.id.btnSearch); search.setOnClickListener(new View.OnClickListener() { public void onClick(View view) { Intent intent = new Intent(Search.this, SearchResults.class); Bundle b = new Bundle(); EditText txt1 = (EditText) findViewById(R.id.edittext); EditText txt2 = (EditText) findViewById(R.id.edittext2); b.putString("name", txt1.getText().toString()); b.putInt("state", Integer.parseInt(txt2.getText().toString())); //Add the set of extended data to the intent and start it intent.putExtras(b); startActivity(intent); } }); } This is very similar to the previous example, except here we're creating our own bundle, adding some key/value pairs to it, and adding it to the intent. Now, to retrieve the data, we just need to grab the Bundle that was passed to the new Activity and extract our values from it: @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.search_results); Bundle b = getIntent().getExtras(); int value = b.getInt("state", 0); String name = b.getString("name"); TextView vw1 = (TextView) findViewById(R.id.txtName); TextView vw2 = (TextView) findViewById(R.id.txtState); vw1.setText("Name: " + name); vw2.setText("State: " + String.valueOf(value)); }

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Android - Switching Activities with a Tab Layout

- by Bill Osuch

This post is based on the Tab Layout tutorial on the Android developers site, with some modifications. I wanted to get rid of the icons (they take up too much screen real estate), and modify the fonts on the tabs. First, create a new Android project, with an Activity called TabWidget. Then, create two additional Activities called TabOne and TabTwo. Throw a simple TextView on each one with a message identifying the tab, like this: public class TabTwo extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); TextView tv = new TextView(this); tv.setText("This is tab 2"); setContentView(tv); } } And don't forget to add them to your AndroidManifest.xml file: <activity android:name=".TabOne"></activity> <activity android:name=".TabTwo"></activity> Now we'll create the tab layout - open the res/layout/main.xml file and insert the following: <?xml version="1.0" encoding="utf-8"?> <TabHost xmlns:android="http://schemas.android.com/apk/res/android" android:id="@android:id/tabhost" android:layout_width="fill_parent" android:layout_height="fill_parent"> <LinearLayout android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <TabWidget android:id="@android:id/tabs" android:layout_width="fill_parent" android:layout_height="wrap_content" /> <FrameLayout android:id="@android:id/tabcontent" android:layout_width="fill_parent" android:layout_height="fill_parent" /> </LinearLayout> </TabHost> Finally, we'll create the code needed to populate the TabHost. Make sure your TabWidget class extends TabActivity rather than Activity, and add code to grab the TabHost and create an Intent to launch a new Activity: TabHost tabHost = getTabHost(); // The activity TabHost TabHost.TabSpec spec; // Reusable TabSpec for each tab Intent intent; // Reusable Intent for each tab // Create an Intent to launch an Activity for the tab (to be reused) intent = new Intent().setClass(this, TabOne.class); Add the first tab to the layout: // Initialize a TabSpec for each tab and add it to the TabHost spec = tabHost.newTabSpec("tabOne"); spec.setContent(intent); spec.setIndicator("Tab One"); tabHost.addTab(spec); It's pretty tall as-is, so we'll shorten it: // Squish the tab a little bit horizontally tabHost.getTabWidget().getChildAt(0).getLayoutParams().height = 40; But the text is a little small, so let's increase the font size: // Bump the text size up LinearLayout ll = (LinearLayout) tabHost.getChildAt(0); android.widget.TabWidget tw = (android.widget.TabWidget) ll.getChildAt(0); RelativeLayout rllf = (RelativeLayout) tw.getChildAt(0); TextView lf = (TextView) rllf.getChildAt(1); lf.setTextSize(20); Do the same for the second tab, and you wind up with this: @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); TabHost tabHost = getTabHost(); // The activity TabHost TabHost.TabSpec spec; // Reusable TabSpec for each tab Intent intent; // Reusable Intent for each tab // Create an Intent to launch an Activity for the tab (to be reused) intent = new Intent().setClass(this, TabOne.class); // Initialize a TabSpec for each tab and add it to the TabHost spec = tabHost.newTabSpec("tabOne"); spec.setContent(intent); spec.setIndicator("Tab One"); tabHost.addTab(spec); // Squish the tab a little bit horizontally tabHost.getTabWidget().getChildAt(0).getLayoutParams().height = 40; // Bump the text size up LinearLayout ll = (LinearLayout) tabHost.getChildAt(0); android.widget.TabWidget tw = (android.widget.TabWidget) ll.getChildAt(0); RelativeLayout rllf = (RelativeLayout) tw.getChildAt(0); TextView lf = (TextView) rllf.getChildAt(1); lf.setTextSize(20); // Do the same for the other tabs intent = new Intent().setClass(this, TabTwo.class); spec = tabHost.newTabSpec("tabTwo"); spec.setContent(intent); spec.setIndicator("Tab Two"); tabHost.addTab(spec); tabHost.getTabWidget().getChildAt(1).getLayoutParams().height = 40; RelativeLayout rlrf = (RelativeLayout) tw.getChildAt(1); TextView rf = (TextView) rlrf.getChildAt(1); rf.setTextSize(20); tabHost.setCurrentTab(0); } Save and fire up the emulator, and you should be able to switch back and forth between your tabs!

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Android - Create a custom multi-line ListView bound to an ArrayList

- by Bill Osuch

The Android HelloListView tutorial shows how to bind a ListView to an array of string objects, but you'll probably outgrow that pretty quickly. This post will show you how to bind the ListView to an ArrayList of custom objects, as well as create a multi-line ListView. Let's say you have some sort of search functionality that returns a list of people, along with addresses and phone numbers. We're going to display that data in three formatted lines for each result, and make it clickable. First, create your new Android project, and create two layout files. Main.xml will probably already be created by default, so paste this in: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <TextView android:layout_height="wrap_content" android:text="Custom ListView Contents" android:gravity="center_vertical|center_horizontal" android:layout_width="fill_parent" /> <ListView android:id="@+id/ListView01" android:layout_height="wrap_content" android:layout_width="fill_parent"/> </LinearLayout> Next, create a layout file called custom_row_view.xml. This layout will be the template for each individual row in the ListView. You can use pretty much any type of layout - Relative, Table, etc., but for this we'll just use Linear: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <TextView android:id="@+id/name" android:textSize="14sp" android:textStyle="bold" android:textColor="#FFFF00" android:layout_width="wrap_content" android:layout_height="wrap_content"/> <TextView android:id="@+id/cityState" android:layout_width="wrap_content" android:layout_height="wrap_content"/> <TextView android:id="@+id/phone" android:layout_width="wrap_content" android:layout_height="wrap_content"/> </LinearLayout> Now, add an object called SearchResults. Paste this code in: public class SearchResults { private String name = ""; private String cityState = ""; private String phone = ""; public void setName(String name) { this.name = name; } public String getName() { return name; } public void setCityState(String cityState) { this.cityState = cityState; } public String getCityState() { return cityState; } public void setPhone(String phone) { this.phone = phone; } public String getPhone() { return phone; } } This is the class that we'll be filling with our data, and loading into an ArrayList. Next, you'll need a custom adapter. This one just extends the BaseAdapter, but you could extend the ArrayAdapter if you prefer. public class MyCustomBaseAdapter extends BaseAdapter { private static ArrayList<SearchResults> searchArrayList; private LayoutInflater mInflater; public MyCustomBaseAdapter(Context context, ArrayList<SearchResults> results) { searchArrayList = results; mInflater = LayoutInflater.from(context); } public int getCount() { return searchArrayList.size(); } public Object getItem(int position) { return searchArrayList.get(position); } public long getItemId(int position) { return position; } public View getView(int position, View convertView, ViewGroup parent) { ViewHolder holder; if (convertView == null) { convertView = mInflater.inflate(R.layout.custom_row_view, null); holder = new ViewHolder(); holder.txtName = (TextView) convertView.findViewById(R.id.name); holder.txtCityState = (TextView) convertView.findViewById(R.id.cityState); holder.txtPhone = (TextView) convertView.findViewById(R.id.phone); convertView.setTag(holder); } else { holder = (ViewHolder) convertView.getTag(); } holder.txtName.setText(searchArrayList.get(position).getName()); holder.txtCityState.setText(searchArrayList.get(position).getCityState()); holder.txtPhone.setText(searchArrayList.get(position).getPhone()); return convertView; } static class ViewHolder { TextView txtName; TextView txtCityState; TextView txtPhone; } } (This is basically the same as the List14.java API demo) Finally, we'll wire it all up in the main class file: public class CustomListView extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); ArrayList<SearchResults> searchResults = GetSearchResults(); final ListView lv1 = (ListView) findViewById(R.id.ListView01); lv1.setAdapter(new MyCustomBaseAdapter(this, searchResults)); lv1.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> a, View v, int position, long id) { Object o = lv1.getItemAtPosition(position); SearchResults fullObject = (SearchResults)o; Toast.makeText(ListViewBlogPost.this, "You have chosen: " + " " + fullObject.getName(), Toast.LENGTH_LONG).show(); } }); } private ArrayList<SearchResults> GetSearchResults(){ ArrayList<SearchResults> results = new ArrayList<SearchResults>(); SearchResults sr1 = new SearchResults(); sr1.setName("John Smith"); sr1.setCityState("Dallas, TX"); sr1.setPhone("214-555-1234"); results.add(sr1); sr1 = new SearchResults(); sr1.setName("Jane Doe"); sr1.setCityState("Atlanta, GA"); sr1.setPhone("469-555-2587"); results.add(sr1); sr1 = new SearchResults(); sr1.setName("Steve Young"); sr1.setCityState("Miami, FL"); sr1.setPhone("305-555-7895"); results.add(sr1); sr1 = new SearchResults(); sr1.setName("Fred Jones"); sr1.setCityState("Las Vegas, NV"); sr1.setPhone("612-555-8214"); results.add(sr1); return results; } } Notice that we first get an ArrayList of SearchResults objects (normally this would be from an external data source...), pass it to the custom adapter, then set up a click listener. The listener gets the item that was clicked, converts it back to a SearchResults object, and does whatever it needs to do. Fire it up in the emulator, and you should wind up with something like this:

Search Results

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