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• BYOD is not a fashion statement; it’s an architectural shift - by Indus Khaitan

  - by Greg Jensen

  Ten years ago, if you asked a CIO, “how mobile is your enterprise?”. The answer would be, “100%, we give Blackberry to all our employees.”Few things have changed since then: 1.    Smartphone form-factors have matured, especially after the launch of iPhone. 2.    Rapid growth of productivity applications and services that enable creation and consumption of digital content 3.    Pervasive mobile data connectivityThere are two threads emerging from the change. Users are rapidly mingling their personas of an individual as well as an employee. In the first second, posting a picture of a fancy dinner on Facebook, to creating an expense report for the same meal on the mobile device. Irrespective of the dual persona, a user’s personal and corporate lives intermingle freely on a single hardware and more often than not, it’s an employees personal smartphone being used for everything. A BYOD program enables IT to “control” an employee owned device, while enabling productivity. More often than not the objective of BYOD programs are financial; instead of the organization, an employee pays for it.  More than a fancy device, BYOD initiatives have become sort of fashion statement, of corporate productivity, of letting employees be in-charge and a show of corporate empathy to not force an archaic form-factor in a world of new device launches every month. BYOD is no longer a means of effectively moving expense dollars and support costs. It does not matter who owns the device, it has to be protected.  BYOD brings an architectural shift.  BYOD is an architecture, which assumes that every device is vulnerable, not just what your employees have brought but what organizations have purchased for their employees. It's an architecture, which forces us to rethink how to provide productivity without comprising security.Why assume that every device is vulnerable? Mobile operating systems are rapidly evolving with leading upgrade announcement every other month. It is impossible for IT to catch-up. More than that, user’s are savvier than earlier.  While IT could install locks at the doors to prevent intruders, it may degrade productivity—which incentivizes user’s to bypass restrictions. A rapidly evolving mobile ecosystem have moving parts which are vulnerable. Hence, creating a mobile security platform, which uses the fundamental blocks of BYOD architecture such as identity defragmentation, IT control and data isolation, ensures that the sprawl of corporate data is contained. In the next post, we’ll dig deeper into the BYOD architecture. Normal 0 false false false EN-US JA X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:12.0pt; font-family:"Cambria","serif"; mso-ascii-font-family:Cambria; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Cambria; mso-hansi-theme-font:minor-latin;}

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• What Banks Can Learn From An English Teacher’s Advice

  - by Gaurav H

  The earliest definitions I learnt at school pertained to nouns and verbs. Nouns, my teacher said, indicated names of people, things and places. Verbs, the stern lady said, are “action words”. They indicated motion.  The idea for this blog filtered in when I applied these definitions to the entity I most often deal with for my personal financial needs, and think about or relate to from a professional standpoint: ‘a bank’. Noun? It certainly is. At least that’s how I’d had it figured in my head. It used to be a place I visited to get my financial business done. It is the name of an entity I have a business relationship with. But, taking a closer look at how ‘the bank’ has evolved recently makes me wonder. Is it not after all acquiring some shades of a verb? For one, it’s in motion if I consider my mobile device with its financial apps. For another, it’s in ‘quasi-action’ if I consider a highly interactive virtual bank. The point I’m driving at is not semantic. But the words we use and the way we use them are revealing, and can offer tremendous insights into our existing mindsets. I think the same applies to businesses. Banks that first began examining and deconstructing their cherished ‘definitions’ or business models (nouns) were the earliest to adapt, change, and reinvent (verbs). They were able to waltz past disintermediation threats. Though rooted in a ‘brick and mortar’ heritage, their thinking and infrastructure were flexible enough for the digital era. While their physical premises imposed restrictions—opening hours, transaction hours, appointments, waiting time, overcrowding, processing time, clearing time, etc,—their thinking did not. They innovated. Across traditional and new-era channels, they easily slipped in customer services of a differentiated kind: spot loans, deposits with idle account balances, convenient mortgages with multiple liens or collateral, and instant payment options.I believe the most successful banks are those that fit into the rhythm of their customers’ lives rather than forcing their customers to fit into theirs. It was true for banks that existed before the Internet era; it’s true for banks now. I look no further than UBANK, JIBUN and HBOS Germany to make my point. They are resounding successes because they are not trapped in their own definitions of ‘a bank’. They walk with their customers, rather than waiting for their clients to walk-in for services.Back to my English teacher. She once advised me to use more verbs in my composition. Readers relate better to “action” she said. Banks too can profit from her advice. To succeed, they need to interact more. And remain flexible enough to interact with their customers. Sonny Singh is Senior Vice President  and General Manager of the Oracle Financial Services Global Business Unit. He can be reached at sonny.singh AT oracle.com or on twitter @sonnyhsingh

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• Give a session on C++ AMP – here is how

  - by Daniel Moth

  Ever since presenting on C++ AMP at the AMD Fusion conference in June, then the Gamefest conference in August, and the BUILD conference in September, I've had numerous requests about my material from folks that want to re-deliver the same session. The C++ AMP session I put together has evolved over the 3 presentations to its final form that I used at BUILD, so that is the one I recommend you base yours on. Please get the slides and the recording from channel9 (I'll refer to slide numbers below). This is how I've been presenting the C++ AMP session: Context (slide 3, 04:18-08:18) Start with a demo, on my dual-GPU machine. I've been using the N-Body sample (for VS 11 Developer Preview). (slide 4) Use an nvidia slide that has additional examples of performance improvements that customers enjoy with heterogeneous computing. (slide 5) Talk a bit about the differences today between CPU and GPU hardware, leading to the fact that these will continue to co-exist and that GPUs are great for data parallel algorithms, but not much else today. One is a jack of all trades and the other is a number cruncher. (slide 6) Use the APU example from amd, as one indication that the hardware space is still in motion, emphasizing that the C++ AMP solution is a data parallel API, not a GPU API. It has a future proof design for hardware we have yet to see. (slide 7) Provide more meta-data, as blogged about when I first introduced C++ AMP. Code (slide 9-11) Introduce C++ AMP coding with a simplistic array-addition algorithm – the slides speak for themselves. (slide 12-13) index<N>, extent<N>, and grid<N>. (Slide 14-16) array<T,N>, array_view<T,N> and comparison between them. (Slide 17) parallel_for_each. (slide 18, 21) restrict. (slide 19-20) actual restrictions of restrict(direct3d) – the slides speak for themselves. (slide 22) bring it altogether with a matrix multiplication example. (slide 23-24) accelerator, and accelerator_view. (slide 26-29) Introduce tiling incl. tiled matrix multiplication [tiling probably deserves a whole session instead of 6 minutes!]. IDE (slide 34,37) Briefly touch on the concurrency visualizer. It supports GPU profiling, but enhancements specific to C++ AMP we hope will come at the Beta timeframe, which is when I'll be spending more time talking about it. (slide 35-36, 51:54-59:16) Demonstrate the GPU debugging experience in VS 11. Summary (slide 39) Re-iterate some of the points of slide 7, and add the point that the C++ AMP spec will be open for other compiler vendors to implement, even on other platforms (in fact, Microsoft is actively working on that). (slide 40) Links to content – see slide – including where all your questions should go: http://social.msdn.microsoft.com/Forums/en/parallelcppnative/threads.   "But I don't have time for a full blown session, I only need 2 (or just 1, or 3) C++ AMP slides to use in my session on related topic X" If all you want is a small number of slides, you can take some from the session above and customize them. But because I am so nice, I have created some slides for you, including talking points in the notes section. Download them here. Comments about this post by Daniel Moth welcome at the original blog.

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• Using Live Data in Database Development Work

  - by Phil Factor

  Guest Editorial for Simple-Talk Newsletter... in which Phil Factor reacts with some exasperation when coming across a report that a majority of companies were still using financial and personal data for both developing and testing database applications. If you routinely test your development work using real production data that contains personal or financial information, you are probably being irresponsible, and at worst, risking a heavy financial penalty for your company. Surprisingly, over 80% of financial companies still do this. Plenty of data breaches and fraud have happened from the use of real data for testing, and a data breach is a nightmare for any organisation that suffers one. The cost of each data breach averages out at around $7.2 million in the US in notification, escalation, credit monitoring, fines, litigation, legal costs, and lost business due to customer churn, £1.9 million in the UK. 70% of data breaches are done from within the organisation. Real data can be exploited in a number of ways for malicious or criminal purposes. It isn't just the obvious use of items such as name and address, date of birth, social security number, and credit card and bank account numbers: Data can be exploited in many subtle ways, so there are excellent reasons to ensure that a high priority is given to the detection and prevention of any data breaches. You'll never successfully guess all the ways that real data can be exploited maliciously, or the ease with which it can be accessed. It would be silly to argue that developers never need access to a copy of the database containing live data. Developers sometimes need to track a bug that can only be replicated on the data from the live database. However, it has to be done in a very restrictive harness. The law makes no distinction between development and production databases when a data breach occurs, so the data has to be held with all appropriate security measures in place. In Europe, the use of personal data for testing requires the explicit consent of the people whose data is being held. There are federal standards such as GLBA, PCI DSS and HIPAA, and most US States have privacy legislation. The task of ensuring compliance and tight security in such circumstances is an expensive and time-consuming overhead. The developer is likely to suffer investigation if a data breach occurs, even if the company manages to stay in business. Ironically, the use of copies of live data isn't usually the most effective way to develop or test your data. Data is usually time-specific and isn't usually current by the time it is used for testing, Existing data doesn't help much for new functionality, and every time the data is refreshed from production, any test data is likely to be overwritten. Also, it is not always going to test all the 'edge' conditions that are likely to flush out bugs. You still have the task of simulating the dynamics of actual usage of the database, and here you have no alternative to creating 'spoofed' data. Because of the complexities of relational data, It used to be that there was no realistic alternative to developing and testing with live data. However, this is no longer the case. Real data can be obfuscated, or it can be created entirely from scratch. The latter process used to be impractical, now that there are plenty of third-party tools to choose from. The process of obfuscation isn't risk free. The process must access the live data, and the success of the obfuscation process has to be carefully monitored. Database data security isn't an exciting topic to you or I, but to a hacker it can be an all-consuming obsession, especially if there is financial or political gain involved. This is not the sort of adversary one would wish for and it is far better to accept, and work with, security restrictions that exist for using live data in database development work, especially when the tools exist to create large realistic database test data that can be better for several aspects of testing.

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• DAC pack up all your troubles

  - by Tony Davis

  Visual Studio 2010, or perhaps its apparently-forthcoming sister, "SQL Studio", is being geared up to become the natural way for developers to create databases. Central to this drive is the introduction of 'data-tier application components', or DACs. Applications are developed as normal but when it comes to deployment, instead of supplying the DBA with a bunch of scripts to create the required database objects, the developer creates a single DAC Package ("DAC Pack"); a zipped XML file containing all the database objects needed by the application, along with versioning information, policies for deployment, and so on. It's an intriguing prospect. Developers can work on their development database using their existing tools and source control, and then package up the changes into a single DACPAC for deployment and management. DBAs get an "application level view" of how their instances are being used and the ability to collectively, rather than individually, manage the objects. The DBA needing to manage a large number of relatively small databases can use "DAC snapshots" to get a quick overview of what has changed across all the databases they manage. The reason that DAC packs haven't caused more excitement is that they can only be pushed to SQL Server 2008 R2, and they must be developed or inspected using Visual Studio 2010. Furthermore, what we see right now in VS2010 is more of a 'work-in-progress' or 'vision of the future', with serious shortcomings and restrictions that render it unsuitable for anything but small 'non-critical' departmental databases. The first problem is that DAC packs support a limited set of schema objects (corresponding closely to the features available on 'Azure'). This means that Service Broker queues, CLR Objects, and perhaps most critically security (permissions, certificates etc.), are off-limits. Applications that require these objects will need to add them via a post-deployment TSQL script, rather defeating the whole idea. More worrying still is the process for altering a database with a DAC pack. The grand 'collective' philosophy, whereby a single XML file can be used for deploying and managing builds and changes, extends, unfortunately, to database upgrades. Any change to a database object will result in the creation of a new database, copying the data from the old version, nuking the previous one, and then renaming the new one. Simple eh? The problem is that even something as trivial as adding a comment to a stored procedure in a 5GB database will require the server to find at least twice as much space, as well sufficient elbow-room in the transaction log for copying the largest table. Of course, you'll need to take the database offline for the full course of the deployment, which is likely to take a long time if there is a lot of data. This upgrade/rename process breaks the log chain, makes any subsequent full restore operation highly complicated, and will also break log shipping. As with any grand vision, the devil is always in the detail. It's hard to fathom why Microsoft hasn't used a SQL Compare-style approach to the upgrade process, altering a database with a change script, and this will surely be adopted in the near future. Something had to be in place for VS2010, but right now DAC packs only make sense for Azure. For this, they're cute, but hardly compelling. Nevertheless, DBAs would do well to get familiar with VS 2010 and DAC packs. Like it or not, they're both coming. Cheers, Tony.

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• T-SQL Tuesday #025 &ndash; CHECK Constraint Tricks

  - by Most Valuable Yak (Rob Volk)

  Allen White (blog | twitter), marathoner, SQL Server MVP and presenter, and all-around awesome author is hosting this month's T-SQL Tuesday on sharing SQL Server Tips and Tricks.  And for those of you who have attended my Revenge: The SQL presentation, you know that I have 1 or 2 of them.  You'll also know that I don't recommend using anything I talk about in a production system, and will continue that advice here…although you might be sorely tempted.  Suffice it to say I'm not using these examples myself, but I think they're worth sharing anyway. Some of you have seen or read about SQL Server constraints and have applied them to your table designs…unless you're a vendor ;)…and may even use CHECK constraints to limit numeric values, or length of strings, allowable characters and such.  CHECK constraints can, however, do more than that, and can even provide enhanced security and other restrictions. One tip or trick that I didn't cover very well in the presentation is using constraints to do unusual things; specifically, limiting or preventing inserts into tables.  The idea was to use a CHECK constraint in a way that didn't depend on the actual data: -- create a table that cannot accept data CREATE TABLE dbo.JustTryIt(a BIT NOT NULL PRIMARY KEY, CONSTRAINT chk_no_insert CHECK (GETDATE()=GETDATE()+1)) INSERT dbo.JustTryIt VALUES(1)   I'll let you run that yourself, but I'm sure you'll see that this is a pretty stupid table to have, since the CHECK condition will always be false, and therefore will prevent any data from ever being inserted.  I can't remember why I used this example but it was for some vague and esoteric purpose that applies to about, maybe, zero people.  I come up with a lot of examples like that. However, if you realize that these CHECKs are not limited to column references, and if you explore the SQL Server function list, you could come up with a few that might be useful.  I'll let the names describe what they do instead of explaining them all: CREATE TABLE NoSA(a int not null, CONSTRAINT CHK_No_sa CHECK (SUSER_SNAME()<>'sa')) CREATE TABLE NoSysAdmin(a int not null, CONSTRAINT CHK_No_sysadmin CHECK (IS_SRVROLEMEMBER('sysadmin')=0)) CREATE TABLE NoAdHoc(a int not null, CONSTRAINT CHK_No_AdHoc CHECK (OBJECT_NAME(@@PROCID) IS NOT NULL)) CREATE TABLE NoAdHoc2(a int not null, CONSTRAINT CHK_No_AdHoc2 CHECK (@@NESTLEVEL>0)) CREATE TABLE NoCursors(a int not null, CONSTRAINT CHK_No_Cursors CHECK (@@CURSOR_ROWS=0)) CREATE TABLE ANSI_PADDING_ON(a int not null, CONSTRAINT CHK_ANSI_PADDING_ON CHECK (@@OPTIONS & 16=16)) CREATE TABLE TimeOfDay(a int not null, CONSTRAINT CHK_TimeOfDay CHECK (DATEPART(hour,GETDATE()) BETWEEN 0 AND 1)) GO -- log in as sa or a sysadmin server role member, and try this: INSERT NoSA VALUES(1) INSERT NoSysAdmin VALUES(1) -- note the difference when using sa vs. non-sa -- then try it again with a non-sysadmin login -- see if this works: INSERT NoAdHoc VALUES(1) INSERT NoAdHoc2 VALUES(1) GO -- then try this: CREATE PROCEDURE NotAdHoc @val1 int, @val2 int AS SET NOCOUNT ON; INSERT NoAdHoc VALUES(@val1) INSERT NoAdHoc2 VALUES(@val2) GO EXEC NotAdHoc 2,2 -- which values got inserted? SELECT * FROM NoAdHoc SELECT * FROM NoAdHoc2   -- and this one just makes me happy :) INSERT NoCursors VALUES(1) DECLARE curs CURSOR FOR SELECT 1 OPEN curs INSERT NoCursors VALUES(2) CLOSE curs DEALLOCATE curs INSERT NoCursors VALUES(3) SELECT * FROM NoCursors   I'll leave the ANSI_PADDING_ON and TimeOfDay tables for you to test on your own, I think you get the idea.  (Also take a look at the NoCursors example, notice anything interesting?)  The real eye-opener, for me anyway, is the ability to limit bad coding practices like cursors, ad-hoc SQL, and sa use/abuse by using declarative SQL objects.  I'm sure you can see how and why this would come up when discussing Revenge: The SQL.;) And the best part IMHO is that these work on pretty much any version of SQL Server, without needing Policy Based Management, DDL/login triggers, or similar tools to enforce best practices. All seriousness aside, I highly recommend that you spend some time letting your mind go wild with the possibilities and see how far you can take things.  There are no rules! (Hmmmm, what can I do with rules?) #TSQL2sDay

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• What's up with LDoms: Part 9 - Direct IO

  - by Stefan Hinker

  In the last article of this series, we discussed the most general of all physical IO options available for LDoms, root domains.  Now, let's have a short look at the next level of granularity: Virtualizing individual PCIe slots.  In the LDoms terminology, this feature is called "Direct IO" or DIO.  It is very similar to root domains, but instead of reassigning ownership of a complete root complex, it only moves a single PCIe slot or endpoint device to a different domain.  Let's look again at hardware available to mars in the original configuration: root@sun:~# ldm ls-io NAME TYPE BUS DOMAIN STATUS ---- ---- --- ------ ------ pci_0 BUS pci_0 primary pci_1 BUS pci_1 primary pci_2 BUS pci_2 primary pci_3 BUS pci_3 primary /SYS/MB/PCIE1 PCIE pci_0 primary EMP /SYS/MB/SASHBA0 PCIE pci_0 primary OCC /SYS/MB/NET0 PCIE pci_0 primary OCC /SYS/MB/PCIE5 PCIE pci_1 primary EMP /SYS/MB/PCIE6 PCIE pci_1 primary EMP /SYS/MB/PCIE7 PCIE pci_1 primary EMP /SYS/MB/PCIE2 PCIE pci_2 primary EMP /SYS/MB/PCIE3 PCIE pci_2 primary OCC /SYS/MB/PCIE4 PCIE pci_2 primary EMP /SYS/MB/PCIE8 PCIE pci_3 primary EMP /SYS/MB/SASHBA1 PCIE pci_3 primary OCC /SYS/MB/NET2 PCIE pci_3 primary OCC /SYS/MB/NET0/IOVNET.PF0 PF pci_0 primary /SYS/MB/NET0/IOVNET.PF1 PF pci_0 primary /SYS/MB/NET2/IOVNET.PF0 PF pci_3 primary /SYS/MB/NET2/IOVNET.PF1 PF pci_3 primary All of the "PCIE" type devices are available for SDIO, with a few limitations.  If the device is a slot, the card in that slot must support the DIO feature.  The documentation lists all such cards.  Moving a slot to a different domain works just like moving a PCI root complex.  Again, this is not a dynamic process and includes reboots of the affected domains.  The resulting configuration is nicely shown in a diagram in the Admin Guide: There are several important things to note and consider here: The domain receiving the slot/endpoint device turns into an IO domain in LDoms terminology, because it now owns some physical IO hardware. Solaris will create nodes for this hardware under /devices.  This includes entries for the virtual PCI root complex (pci_0 in the diagram) and anything between it and the actual endpoint device.  It is very important to understand that all of this PCIe infrastructure is virtual only!  Only the actual endpoint devices are true physical hardware. There is an implicit dependency between the guest owning the endpoint device and the root domain owning the real PCIe infrastructure: Only if the root domain is up and running, will the guest domain have access to the endpoint device. The root domain is still responsible for resetting and configuring the PCIe infrastructure (root complex, PCIe level configurations, error handling etc.) because it owns this part of the physical infrastructure. This also means that if the root domain needs to reset the PCIe root complex for any reason (typically a reboot of the root domain) it will reset and thus disrupt the operation of the endpoint device owned by the guest domain.  The result in the guest is not predictable.  I recommend to configure the resulting behaviour of the guest using domain dependencies as described in the Admin Guide in Chapter "Configuring Domain Dependencies". Please consult the Admin Guide in Section "Creating an I/O Domain by Assigning PCIe Endpoint Devices" for all the details! As you can see, there are several restrictions for this feature.  It was introduced in LDoms 2.0, mainly to allow the configuration of guest domains that need access to tape devices.  Today, with the higher number of PCIe root complexes and the availability of SR-IOV, the need to use this feature is declining.  I personally do not recommend to use it, mainly because of the drawbacks of the depencies on the root domain and because it can be replaced with SR-IOV (although then with similar limitations). This was a rather short entry, more for completeness.  I believe that DIO can usually be replaced by SR-IOV, which is much more flexible.  I will cover SR-IOV in the next section of this blog series.

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• Seamless STP with Oracle SOA Suite

  - by user12339860

  STP stands for “Straight Through Processing”. Wikipedia describes STP as a solution that enables “the entire trade process for capital markets and payment transactions to be conducted electronically without the need for re-keying or manual intervention, subject to legal and regulatory restrictions” .I will deal with the later part of the definition i.e “payment transactions without manual intervention” in this article. The STP that I am writing about involves the interaction between a Bank and its’ corporate customers,to that extent this business case is also called “Corporate Payments”.Simply put a  Corporate Payment-STP solution needs to connect the payment transaction right from the Corporate ERP into the Bank’s Payment Hub. A SOA based STP solution can do a lot more than just process transaction. But before I get to the solution let me describe the perspectives of the two primary parties in this interaction. The Corporate customer and the Bank. Corporate's Interaction with Bank:  Typically it is the treasury department of an enterprise which interacts with the Bank on a daily basis. Here is how a day of interaction would look like from the treasury department of a corp. Corporate Cash Retrieve Beginning of day totals Monitor Cash Accounts Send or receive cash between accounts Supply chain payments Payment Settlements Calculate settlement positions Retrieve End of Day totals Assess Transaction Financial Impact Short Term Investment Desk Retrieve Current Account information Conduct Investment activities Bank’s Interaction with the Corporate :  From the Bank’s perspective, the interaction starts from the point of on boarding a corporate customer to billing the corporate for the value added services it provides. Once the corporate is on-boarded the daily interaction involves Handle the various formats of data arriving from customers Process Beginning of Day & End of Day reporting request from customers Meet compliance requirements Process Payments Transmit Payment Status Challenges with this Interaction :  Both the Bank & the Corporate face many challenges from these interactions. Some of the challenges include Keeping a consistent view of transaction data for various LOBs of the corporate & the Bank Corporate customers use different ERPs, hence the data formats are bound to be different Can the Bank’s IT systems convert the data formats that can be easily mapped to the corporate ERP How does the Bank manage the communication profiles of these customers?  Corporate customers are demanding near real time visibility on their corporate accounts Corporate customers can make better cash management decisions if they can analyse the impact. Can the Bank create opportunities to sell its products to the investment desks at corporate houses & manage their orders? How will the Bank bill the corporate customer for the value added services it provides. What does a SOA based Seamless STP solution bring to the table? Highlights of Oracle SOA based STP solution For the Corporate Customer: No Manual or Paper based banking transactions Secure Delivery of Payment data to the Bank from multiple ERPs without customization Single Portal for monitoring & administering payment transactions Rule based validation of payments Customer has data necessary for more effective handling of payment and cash management decisions  Business measurements track progress toward payment cost goals  For the Bank: Reduces time & complexity of transactions Simplifies the process of introducing new products to corporate customers Single Payment hub for all corporate ERP payments across multiple instruments New Revenue sources by delivering value added services to customers Leverages existing payment infrastructure Remove Inconsistent data formats and interchange between bank and corporate systems  Compliance and many other benefits

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• Communication between state machines with hidden transitions

  - by slartibartfast

  The question emerged for me in embedded programming but I think it can be applied to quite a number of general networking situations e.g. when a communication partner fails. Assume we have an application logic (a program) running on a computer and a gadget connected to that computer via e.g. a serial interface like RS232. The gadget has a red/green/blue LED and a button which disables the LED. The LEDs color can be driven by software commands over the serial interface and the state (red/green/blue/off) is read back and causes a reaction in the application logic. Asynchronous behaviour of the application logic with regard to the LED color down to a certain delay (depending on the execution cycle of the application) is tolerated. What we essentially have is a resource (the LED) which can not be reserved and handled atomically by software because the (organic) user can at any time press the button to interfere/break the software attempt to switch the LED color. Stripping this example from its physical outfit I dare to say that we have two communicating state machines A (application logic) and G (gadget) where G executes state changes unbeknownst to A (and also the other way round, but this is not significant in our example) and only A can be modified at a reasonable price. A needs to see the reaction and state of G in one piece of information which may be (slightly) outdated but not inconsistent with respect to the short time window when this information was generated on the side of G. What I am looking for is a concise method to handle such a situation in embedded software (i.e. no layer/framework like CORBA etc. available). A programming technique which is able to map the complete behaviour of both participants on classical interfaces of a classical programming language (C in this case). To complicate matters (or rather, to generalize), a simple high frequency communication cycle of A to G and back (IOW: A is rapidly polling G) is out of focus because of technical restrictions (delay of serial com, A not always active, etc.). What I currently see as a general solution is: the application logic A as one thread of execution an adapter object (proxy) PG (presenting G inside the computer), together with the serial driver as another thread a communication object between the two (A and PG) which is transactionally safe to exchange The two execution contexts (threads) on the computer may be multi-core or just interrupt driven or tasks in an RTOS. The com object contains the following data: suspected state (written by A): effectively a member of the power set of states in G (in our case: red, green, blue, off, red_or_green, red_or_blue, red_or_off...etc.) command data (written by A): test_if_off, switch_to_red, switch_to_green, switch_to_blue operation status (written by PG): operation_pending, success, wrong_state, link_broken new state (written by PG): red, green, blue, off The idea of the com object is that A writes whichever (set of) state it thinks G is in, together with a command. (Example: suspected state="red_or_green", command: "switch_to_blue") Notice that the commands issued by A will not work if the user has switched off the LED and A needs to know this. PG will pick up such a com object and try to send the command to G, receive its answer (or a timeout) and set the operation status and new state accordingly. A will take back the oject once it is no longer at operation_pending and can react to the outcome. The com object could be separated of course (into two objects, one for each direction) but I think it is convenient in nearly all instances to have the command close to the result. I would like to have major flaws pointed out or hear an entirely different view on such a situation.

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• Give a session on C++ AMP – here is how

  - by Daniel Moth

  Ever since presenting on C++ AMP at the AMD Fusion conference in June, then the Gamefest conference in August, and the BUILD conference in September, I've had numerous requests about my material from folks that want to re-deliver the same session. The C++ AMP session I put together has evolved over the 3 presentations to its final form that I used at BUILD, so that is the one I recommend you base yours on. Please get the slides and the recording from channel9 (I'll refer to slide numbers below). This is how I've been presenting the C++ AMP session: Context (slide 3, 04:18-08:18) Start with a demo, on my dual-GPU machine. I've been using the N-Body sample (for VS 11 Developer Preview). (slide 4) Use an nvidia slide that has additional examples of performance improvements that customers enjoy with heterogeneous computing. (slide 5) Talk a bit about the differences today between CPU and GPU hardware, leading to the fact that these will continue to co-exist and that GPUs are great for data parallel algorithms, but not much else today. One is a jack of all trades and the other is a number cruncher. (slide 6) Use the APU example from amd, as one indication that the hardware space is still in motion, emphasizing that the C++ AMP solution is a data parallel API, not a GPU API. It has a future proof design for hardware we have yet to see. (slide 7) Provide more meta-data, as blogged about when I first introduced C++ AMP. Code (slide 9-11) Introduce C++ AMP coding with a simplistic array-addition algorithm – the slides speak for themselves. (slide 12-13) index<N>, extent<N>, and grid<N>. (Slide 14-16) array<T,N>, array_view<T,N> and comparison between them. (Slide 17) parallel_for_each. (slide 18, 21) restrict. (slide 19-20) actual restrictions of restrict(direct3d) – the slides speak for themselves. (slide 22) bring it altogether with a matrix multiplication example. (slide 23-24) accelerator, and accelerator_view. (slide 26-29) Introduce tiling incl. tiled matrix multiplication [tiling probably deserves a whole session instead of 6 minutes!]. IDE (slide 34,37) Briefly touch on the concurrency visualizer. It supports GPU profiling, but enhancements specific to C++ AMP we hope will come at the Beta timeframe, which is when I'll be spending more time talking about it. (slide 35-36, 51:54-59:16) Demonstrate the GPU debugging experience in VS 11. Summary (slide 39) Re-iterate some of the points of slide 7, and add the point that the C++ AMP spec will be open for other compiler vendors to implement, even on other platforms (in fact, Microsoft is actively working on that). (slide 40) Links to content – see slide – including where all your questions should go: http://social.msdn.microsoft.com/Forums/en/parallelcppnative/threads.   "But I don't have time for a full blown session, I only need 2 (or just 1, or 3) C++ AMP slides to use in my session on related topic X" If all you want is a small number of slides, you can take some from the session above and customize them. But because I am so nice, I have created some slides for you, including talking points in the notes section. Download them here. Comments about this post by Daniel Moth welcome at the original blog.

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• Process for Securing Web Sites and Applications

  - by Aamir Hasan

  The following quick-start guide provides a detailed overview of how to configure security for IIS 6.0. Reduce the Attack Surface of the Web Server 1.       Enable only essential Windows Server 2003 components and services. 2.       Enable only essential IIS 6.0 components and services. 3.       Enable only essential Web service extensions. 4.       Enable only essential Multipurpose Internet Mail Extensions (MIME) types. 5.       Configure Windows Server 2003 security settings. Prevent Unauthorized Access to Web Sites and Applications 1.       Store content on a dedicated disk volume. 2.       Set IIS Web site permissions. 3.       Set IP address and domain name restrictions. 4.       Set the NTFS file system permissions. Isolate Web Sites and Applications 1.       Evaluate the effects of impersonation on application compatibility: 2·         Identify the impersonation behavior for ASP applications. 3·         Select the impersonation behavior for ASP.NET applications. 4.       Configure Web sites and applications for isolation. Configure User Authentication 1.       Configure Web site authentication. 2·         Select the Web site authentication method. 3·         Configure the Web site authentication method. 4.       Configure File Transfer Protocol (FTP) site authentication. Encrypt Confidential Data Exchanged with Clients 1.       Use Secure Sockets Layer (SSL) to encrypt confidential data. 2.       Use Internet Protocol security (IPSec) or virtual private network (VPN) with remote administration. Maintain Web Site and Application Security 1.       Obtain and apply current security patches. 2.       Enable Windows Server 2003 security logs. 3.       Enable file access auditing for Web site content. 4.       Configure IIS logs. 5.       Review security policies, processes, and procedures.  Note:To secure the Web sites and applications in a Web farm, use the process described in this chapter to configure security for each server in the Web farm. Link:http://www.studentacad.com/post/2010/04/28/Process-for-Securing-Web-Sites-and-Applications.aspx

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• “Apparently, you signed a software services agreement without fully understanding it.”

  - by Dave Ballantyne

  I am not a lawyer. Let me say that again, I am not a lawyer. Todays Dilbert has prompted me to post about my recent experience with SqlServer licensing. I'm in the technical realm and rarely have much to do with purchasing and licensing.  I say “I need” , budget realities will state weather I actually get.  However, I do keep my ear to the ground and due to my community involvement, I know, or at least have an understanding of, some licensing restrictions. Due to a misunderstanding, Microsoft Licensing stated that we needed licenses for our standby servers.  I knew that that was not the case,  and a quick tweet confirmed this. So after composing an email stating exactly what the machines in question were used for ie Log shipped to and used in a disaster recover scenario only,  and posting several Technet articles to back this up, we saved 2 enterprise edition licences, a not inconsiderable cost. However during this discussion, I was made aware of another ‘legalese’ document that could completely override the referenced articles, and anything I knew, or thought i knew, about SqlServer licensing. Personally, I had no knowledge of this.  The “Purchase Use Rights” agreement would appear to be the volume licensing equivalent of the “End User License Agreement” , click throughs we all know and ignore.  Here is a direct quote from Microsoft licensing, when asked for clarification. “Thanks for your email. Just to give some background on the Product Use Rights (PUR), licenses acquired through volume licensing are bound by the most recent PUR at the time of license acquisition. The link for the current PUR and PUR archive is http://www.microsoft.com/licensing/about-licensing/product-licensing.aspx. Further to this, products acquired through boxed product or pre-installed on hardware (OEM) are bound by the End User License Agreement (EULA). The PUR will explain limitations, license requirements and rulings on areas like multiplexing, virtualization, processor licensing, etc. When an article will appear on a Microsoft site or blog describing the licensing of a product, it will be using the PUR as a base. Due to the writing style or language used by the person writing areas of the website or technical blogs, the PUR is what you should use as a rule and not any of the other media. The PUR is updated quarterly and will reference every product available at that time working on the latest version unless otherwise stated. The crux of this is that the PUR is written after extensive discussions between the different branches of Microsoft (legal, technical, etc) and the wording is then approved. This is not always the case for some pages explaining licensing as they are merely intended to advise and not subject to the intense scrutiny as the PUR.” So, exactly what does that mean ? My take :  This is a living document, “updated quarterly” , though presumably this could be done on a whim and a fancy.  It could state , you are only licensed if ,that during install you stand in a corner juggling and that photographic evidence is required. A plainly ridiculous demand but,  what else could it override or new requirements could it state that change your existing understanding of the product or your legal usage of it. As i say, im not a lawyer, but are you checking the PURA prior to purchase ?

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• Procedual level generation for a platformer game (tilebased) using player physics

  - by Notbad

  I have been searching for information about how to build a 2d world generator (tilebased) for a platformer game I am developing. The levels should look like dungeons with a ceiling and a floor and they will have a high probability of being just made of horizontal rooms but sometimes they can have exits to a top/down room. Here is an example of what I would like to achieve. I'm refering only to the caves part. I know level design won't be that great when generated but I think it is possible to have something good enough for people to enjoy the procedural maps (Note: Supermetrod Spoiler!): http://www.snesmaps.com/maps/SuperMetroid/SuperMetroidMapNorfair.html Well, after spending some time thinking about this I have some ideas to create the maps that I would like to share with you: 1) I have read about celular automatas and I would like to use them to carve the rooms but instead of carving just a tile at once I would like to carve full columns of tiles. Of course this carving system will have some restrictions like how many tiles must be left for the roof and the ceiling, etc... This way I could get much cleaner rooms than using the ussual automata. 2) I want some branching into the rooms. It will have little probability to happen but I definitely want it. Thinking about carving I came to the conclusion that I could be using some sort of path creation algorithm that the carving system would follow to create a path in the rooms. This could be more noticiable if we make the carving system to carve columns with the height of a corridor or with the height of a wide room (this will be added to the system as a param). This way at some point I could spawn a new automa beside the main one to create braches. This new automata should play side by side with the first one to create dead ends, islands (both paths created by the automatas meet at some point or lead to the same room. It would be too long to explain here all the tests I have done, etc... just will try to summarize the problems to see if anyone could bring some light to solve them (I don't mind sharing my successes but I think they aren't too relevant): 1) Zone reachability: How can I make sure that the player will be able to reach all zones I created (mainly when branches happen or vertical rooms are created). When branches are created I have to make sure that there will be a way to get onto the new created branch. I mean a bifurcation that the player could follow. Player will follow the main path or jump to a platform to get onto the other way). On the other hand if an island is created by the meeting of both branches I need to make sure the player will be able to get onto the island too. 2) When a branch is created and corridors are generated for each branch how can I make then both merge or repel to create an island or just make them separated corridors. 3) When I create a branch and an island is created becasue both corridors merge at somepoint or they lead to the same room, is there any way to detect this and randomize where to create the needed platforms to get onto the created isle? This platforms could be created at the start of the island or at the end. I guess part of the problem could be solved using some sort of graph following the created paths but I'm a bit lost in this sea of precedural content creation :). On the other hand I don't expect a solution to the problem but some information to get me moving forward again. Thanks in advance.

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• Access Control Lists for Roles

  - by Kyle Hatlestad

  Back in an earlier post, I wrote about how to enable entity security (access control lists, aka ACLs) for UCM 11g PS3.  Well, there was actually an additional security option that was included in that release but not fully supported yet (only for Fusion Applications).  It's the ability to define Roles as ACLs to entities (documents and folders).  But now in PS5, this security option is now fully supported.   The benefit of defining Roles for ACLs is that those user roles come from the enterprise security directory (e.g. OID, Active Directory, etc) and thus the WebCenter Content administrator does not need to define them like they do with ACL Groups (Aliases).  So it's a bit of best of both worlds.  Users are managed through the LDAP repository and are automatically granted/denied access through their group membership which are mapped to Roles in WCC.  A different way to think about it is being able to add multiple Accounts to content items...which I often get asked about.  Because LDAP groups can map to Accounts, there has always been this association between the LDAP groups and access to the entity in WCC.  But that mapping had to define the specific level of access (RWDA) and you could only apply one Account per content item or folder.  With Roles for ACLs, it basically takes away both of those restrictions by allowing users to define more then one Role and define the level of access on-the-fly. To turn on ACLs for Roles, there is a component to enable.  On the Component Manager page, click the 'advanced component manager' link in the description paragraph at the top.   In the list of Disabled Components, enable the RoleEntityACL component. Then restart.  This is assuming the other configuration settings have been made for the other ACLs in the earlier post.   Once enabled, a new metadata field called xClbraRoleList will be created.  If you are using OracleTextSearch as the search indexer, be sure to run a Fast Rebuild on the collection. For Users and Groups, these values are automatically picked up from the corresponding database tables.  In the case of Roles, there is an explicitly defined list of choices that are made available.  These values must match the roles that are coming from the enterprise security repository. To add these values, go to Administration -> Admin Applets -> Configuration Manager.  On the Views tab, edit the values for the ExternalRolesView.  By default, 'guest' and 'authenticated' are added.  Once added, you can assign the roles to your content or folder. If you are a user that can both access the Security Group for that item and you belong to that particular Role, you now have access to that item.  If you don't belong to that Role, you won't! [Extra] Because the selection mechanism for the list is using a type-ahead field, users may not even know the possible choices to start typing to.  To help them, one thing you can add to the form is a placeholder field which offers the entire list of roles as an option list they can scroll through (assuming its a manageable size)  and view to know what to type to.  By being a placeholder field, it won't need to be added to the custom metadata database table or search engine.  

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• How to place rooms proceduraly (rule based) on in a game word

  - by gardian06

  I am trying to design the algorithm for my level generation which is a rule driven system. I have created all the rules for the system. I have taken care to insure that all rooms make sense in a grid type setup. for example: these rooms could make this configuration The logic flow code that I have so far Door{ Vector3 position; POD orient; // 5 possible values (up is not an option) bool Open; } Room{ String roomRule; Vector3 roomPos; Vector3 dimensions; POD roomOrient; // 4 possible values List doors<Door>; } LevelManager{ float scale = 18f; List usedRooms<Room>; List openDoors<Door> bool Grid[][][]; Room CreateRoom(String rule, Vector3 position, POD Orient){ place recieved values based on rule fill in other data } Vector3 getDimenstions(String rule){ return dimensions of the room } RotateRoom(POD rotateAmount){ rotate all items in the room } MoveRoom(Room toBeMoved, POD orientataion, float distance){ move the position of the room based on inputs } GenerateMap(Vector3 size, Vector3 start, Vector3 end){ Grid = array[size.y][size.x][size.z]; Room floatingRoom; floatingRoom = Room.CreateRoom(S01, start, rand(4)); usedRooms.Add(floatingRoom); for each Door in floatingRoom.doors{ openDoors.Add(door); } // fill used grid spaces floatingRoom = Room.CreateRoom(S02, end, rand(4); usedRooms.Add(floatingRoom); for each Door in floatingRoom.doors{ openDoors.Add(door); } Vector3 nRoomLocation; Door workingDoor; string workingRoom; // fill used grid spaces // pick random door on the openDoors list workingDoor = /*randomDoor*/ // get a random rule nRoomLocation = workingDoor.position; // then I'm lost } } I know that I have to make sure for convergence (namely the end is reachable), and to do this until there are no more doors on the openDoors list. right now I am simply trying to get this to work in 2D (there are rules that introduce 3D), but I am working on a presumption that a rigorous algorithm can be trivially extended to 3D. EDIT: my thought pattern so far is to take an existing open door and then pick a random room (restrictions can be put in later) place that room's center at the doors location move the room in the direction of the doors orientation half the rooms dimension w/respect to that axis then test against the 3D array to see if all the grid points are open, or have been used, or if there is even space to put the room (caseEdge) if caseEdge (which can also occur in between rooms) then put the door on a toBeClosed list, and remove it from the open list (placing a wall or something there). then to do some kind of test that both the start, and the goal are connected, and reachable from each other (each room has nodes for AI, but I don't want to "have" to pull those out to accomplish this). but this logic has the problem for say the U, or L shaped rooms in my example, and then I also have a problem conceptually if the room needs to be rotated.

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• ZFS Storage Appliance ? ldap ??????

  - by user13138569

  ZFS Storage Appliance ? Openldap ????????? ???ldap ?????????????? Solaris 11 ? Openldap ????????????? ??? slapd.conf ??ldif ?????????? user01 ??????? ?????? slapd.conf # # See slapd.conf(5) for details on configuration options. # This file should NOT be world readable. # include /etc/openldap/schema/core.schema include /etc/openldap/schema/cosine.schema include /etc/openldap/schema/nis.schema # Define global ACLs to disable default read access. # Do not enable referrals until AFTER you have a working directory # service AND an understanding of referrals. #referral ldap://root.openldap.org pidfile /var/openldap/run/slapd.pid argsfile /var/openldap/run/slapd.args # Load dynamic backend modules: modulepath /usr/lib/openldap moduleload back_bdb.la # moduleload back_hdb.la # moduleload back_ldap.la # Sample security restrictions # Require integrity protection (prevent hijacking) # Require 112-bit (3DES or better) encryption for updates # Require 63-bit encryption for simple bind # security ssf=1 update_ssf=112 simple_bind=64 # Sample access control policy: # Root DSE: allow anyone to read it # Subschema (sub)entry DSE: allow anyone to read it # Other DSEs: # Allow self write access # Allow authenticated users read access # Allow anonymous users to authenticate # Directives needed to implement policy: # access to dn.base="" by * read # access to dn.base="cn=Subschema" by * read # access to * # by self write # by users read # by anonymous auth # # if no access controls are present, the default policy # allows anyone and everyone to read anything but restricts # updates to rootdn. (e.g., "access to * by * read") # # rootdn can always read and write EVERYTHING! ####################################################################### # BDB database definitions ####################################################################### database bdb suffix "dc=oracle,dc=com" rootdn "cn=Manager,dc=oracle,dc=com" # Cleartext passwords, especially for the rootdn, should # be avoid. See slappasswd(8) and slapd.conf(5) for details. # Use of strong authentication encouraged. rootpw secret # The database directory MUST exist prior to running slapd AND # should only be accessible by the slapd and slap tools. # Mode 700 recommended. directory /var/openldap/openldap-data # Indices to maintain index objectClass eq ?????????ldif???? dn: dc=oracle,dc=com objectClass: dcObject objectClass: organization dc: oracle o: oracle dn: cn=Manager,dc=oracle,dc=com objectClass: organizationalRole cn: Manager dn: ou=People,dc=oracle,dc=com objectClass: organizationalUnit ou: People dn: ou=Group,dc=oracle,dc=com objectClass: organizationalUnit ou: Group dn: uid=user01,ou=People,dc=oracle,dc=com uid: user01 objectClass: top objectClass: account objectClass: posixAccount objectClass: shadowAccount cn: user01 uidNumber: 10001 gidNumber: 10000 homeDirectory: /home/user01 userPassword: secret loginShell: /bin/bash shadowLastChange: 10000 shadowMin: 0 shadowMax: 99999 shadowWarning: 14 shadowInactive: 99999 shadowExpire: -1 ldap?????????????ZFS Storage Appliance??????? Configuration SERVICES LDAP ??Base search DN ?ldap??????????? ???? ldap ????????? user01 ???????????????? ???????????? user ????????? Unknown or invalid user ?????????????????? ????????????????Solaris 11 ???????????? ????????????? ldap ????????getent ??????????????? # svcadm enable svc:/network/nis/domain:default # svcadm enable ldap/client # ldapclient manual -a authenticationMethod=none -a defaultSearchBase=dc=oracle,dc=com -a defaultServerList=192.168.56.201 System successfully configured # getent passwd user01 user01:x:10001:10000::/home/user01:/bin/bash ????????? user01 ?????????????? # mount -F nfs -o vers=3 192.168.56.101:/export/user01 /mnt # su user01 bash-4.1$ cd /mnt bash-4.1$ touch aaa bash-4.1$ ls -l total 1 -rw-r--r-- 1 user01 10000 0 May 31 04:32 aaa ?????? ldap ??????????????????????????!

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• Ninject.Web, OnePerRequestModule, and IIS7 Integrated Pipeline

  - by Ted

  Using Ninject.Web with ASP.NET WebForms project. Works without issues using classic pipeline, but when it's under integrated pipeline, a null reference exception occurs on every request (which I've narrowed down to the use of the OnePerRequestModule): [NullReferenceException: Object reference not set to an instance of an object.] System.Web.PipelineStepManager.ResumeSteps(Exception error) +1216 System.Web.HttpApplication.BeginProcessRequestNotification(HttpContext context, AsyncCallback cb) +113 System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +616 The above always occurs unless I remove the OnePerRequestModule initializization. occurs consistently on a very basic test app I put together. On a standard app where I actually want to implement it, I can solve the issue by initializing the OnePerRequestModule like so: protected override IKernel CreateKernel() { // This will always blow up. //var module = new OnePerRequestModule(); //module.Init(this); IKernel kernel = new StandardKernel(new MyModule()); // This works on larger app, but on basic app, it makes no difference under integrated pipeline as the above exception is always thrown. var module = new OnePerRequestModule(); module.Init(this); return kernel; } Before I start spelunking further, is anybody out there using Ninject.Web extension successfully under the integrated pipeline in IIS7 AND using the OnePerRequestModule? There are certain restrictions for modules under the integrated pipeline that weren't there in previous IIS versions/classic pipeline. Quickly thrown together sample project at http://www.filedropper.com/test_59 And in case it's not obvious with Ninject.Web: it's an ASP.NET WebForms project.

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• Hibernate Criteria: Perform JOIN in Subquery/DetachedCriteria

  - by Gilean

  I'm running into an issue with adding JOIN's to a subquery using DetachedCriteria. The code looks roughly like this: Criteria criteria = createCacheableCriteria(ProductLine.class, "productLine"); criteria.add(Expression.eq("productLine.active", "Y")); DetachedCriteria subCriteria = DetachedCriteria.forClass(Models.class, "model"); subCriteria.setProjection(Projections.rowCount()); subCriteria.createAlias("model.language", "modelLang"); criteria.add(Expression.eq("modelLang.language_code", "EN")); subCriteria.add(Restrictions.eqProperty("model.productLine.id","productLine.id")); criteria.add(Subqueries.lt(0, subCriteria)); But the logged SQL does not contain the JOIN in the subquery, but does include the alias which is throwing an error SELECT * FROM PRODUCT_LINES this_ WHERE this_.ACTIVE=? AND ? < (SELECT COUNT(*) AS y0_ FROM MODELS this0__ WHERE modelLang3_.LANGUAGE ='EN' AND this0__.PRODUCT_LINE_ID =this_.ID ) How can I add the joins to the DetachedCriteria? Hibernate version: 3.2.6.ga Hibernate core: 3.3.2.GA Hibernate annotations: 3.4.0.GA Hibernate commons-annotations: 3.3.0.ga Hibernate entitymanager: 3.4.0.GA Hibernate validator: 3.1.0.GA

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• ORA-03113 in code. In addition, TNS-12535 and ORA-03137 in alert file

  - by user1348107

  I've got an exception that contain ORA-03113: (SiPPSS.GetPrintWorkDirectDetail) - ERR:ORA-03113: end-of-file on communication channel Process ID: 7448 Session ID: 30 Serial number: 9802 ?????:12110937 ????:T855 Oracle.DataAccess.Client.OracleException ORA-03113: end-of-file on communication channel Process ID: 7448 Session ID: 30 Serial number: 9802 ?? Oracle.DataAccess.Client.OracleException.HandleErrorHelper(Int32 errCode, OracleConnection conn, IntPtr opsErrCtx, OpoSqlValCtx* pOpoSqlValCtx, Object src, String procedure, Boolean bCheck) ?? Oracle.DataAccess.Client.OracleException.HandleError(Int32 errCode, OracleConnection conn, String procedure, IntPtr opsErrCtx, OpoSqlValCtx* pOpoSqlValCtx, Object src, Boolean bCheck) ?? Oracle.DataAccess.Client.OracleCommand.ExecuteReader(Boolean requery, Boolean fillRequest, CommandBehavior behavior) ?? Oracle.DataAccess.Client.OracleDataAdapter.Fill(DataTable[] dataTables, Int32 startRecord, Int32 maxRecords, IDbCommand command, CommandBehavior behavior) ?? System.Data.Common.DbDataAdapter.Fill(DataTable dataTable) ?? SiPPSS.VSireiMeisaiDsTableAdapters.V_SIREI_MEISAITableAdapter.FillByRunningNoAndProcNo(V_SIREI_MEISAIDataTable dataTable, String RUNNING_NO, String PROC_NO) ?? C:\SVM\trunk\SiPPSSServer\Server\Dao\View\VSireiMeisaiDs.Designer.vb:? 386 ?? SiPPSS.GetPrintWorkDirectDetail.Execute(BLogicParam param) ?? C:\SVM\trunk\SiPPSSServer\Server\BLogic\Screen\Printing\Rprt0701\GetPrintWorkDirectDetail.vb:? 105 In this case, the oracle alert log as beblow: Fatal NI connect error 12170. VERSION INFORMATION: TNS for 64-bit Windows: Version 11.2.0.1.0 - Production Oracle Bequeath NT Protocol Adapter for 64-bit Windows: Version 11.2.0.1.0 - Production Windows NT TCP/IP NT Protocol Adapter for 64-bit Windows: Version 11.2.0.1.0 - Production Time: 01-11?-2012 13:50:45 Tracing not turned on. Tns error struct: ns main err code: 12535 TNS-12535: TNS: ??????·???????? ns secondary err code: 12560 nt main err code: 505 TNS-00505: ??????????? nt secondary err code: 60 nt OS err code: 0 Client address: (ADDRESS=(PROTOCOL=tcp)(HOST=10.41.102.53)(PORT=1794)) Thu Nov 01 13:54:17 2012 Thread 1 cannot allocate new log, sequence 1880 Private strand flush not complete Current log# 1 seq# 1879 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Thread 1 advanced to log sequence 1880 (LGWR switch) Current log# 2 seq# 1880 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO02.LOG Thu Nov 01 13:54:21 2012 Archived Log entry 1118 added for thread 1 sequence 1879 ID 0xe48db805 dest 1: Thu Nov 01 14:40:12 2012 Thread 1 cannot allocate new log, sequence 1881 Private strand flush not complete Current log# 2 seq# 1880 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO02.LOG Thread 1 advanced to log sequence 1881 (LGWR switch) Current log# 3 seq# 1881 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO03.LOG Thu Nov 01 14:40:16 2012 Archived Log entry 1119 added for thread 1 sequence 1880 ID 0xe48db805 dest 1: Thu Nov 01 15:27:42 2012 Thread 1 cannot allocate new log, sequence 1882 Private strand flush not complete Current log# 3 seq# 1881 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO03.LOG Thread 1 advanced to log sequence 1882 (LGWR switch) Current log# 1 seq# 1882 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Thu Nov 01 15:27:46 2012 Archived Log entry 1120 added for thread 1 sequence 1881 ID 0xe48db805 dest 1: Thu Nov 01 16:23:48 2012 Thread 1 cannot allocate new log, sequence 1883 Private strand flush not complete Current log# 1 seq# 1882 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Thread 1 advanced to log sequence 1883 (LGWR switch) Current log# 2 seq# 1883 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO02.LOG Thu Nov 01 16:23:52 2012 Archived Log entry 1121 added for thread 1 sequence 1882 ID 0xe48db805 dest 1: Thu Nov 01 17:05:50 2012 Thread 1 cannot allocate new log, sequence 1884 Private strand flush not complete Current log# 2 seq# 1883 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO02.LOG Thread 1 advanced to log sequence 1884 (LGWR switch) Current log# 3 seq# 1884 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO03.LOG Thu Nov 01 17:05:55 2012 Archived Log entry 1122 added for thread 1 sequence 1883 ID 0xe48db805 dest 1: Thu Nov 01 17:26:52 2012 Fatal NI connect error 12170. VERSION INFORMATION: TNS for 64-bit Windows: Version 11.2.0.1.0 - Production Oracle Bequeath NT Protocol Adapter for 64-bit Windows: Version 11.2.0.1.0 - Production Windows NT TCP/IP NT Protocol Adapter for 64-bit Windows: Version 11.2.0.1.0 - Production Time: 01-11?-2012 17:26:52 Tracing not turned on. Tns error struct: ns main err code: 12535 TNS-12535: TNS: ??????·???????? ns secondary err code: 12560 nt main err code: 505 TNS-00505: ??????????? nt secondary err code: 60 nt OS err code: 0 Client address: (ADDRESS=(PROTOCOL=tcp)(HOST=10.41.102.62)(PORT=1286)) Thu Nov 01 17:27:16 2012 Fatal NI connect error 12170. VERSION INFORMATION: TNS for 64-bit Windows: Version 11.2.0.1.0 - Production Oracle Bequeath NT Protocol Adapter for 64-bit Windows: Version 11.2.0.1.0 - Production Windows NT TCP/IP NT Protocol Adapter for 64-bit Windows: Version 11.2.0.1.0 - Production Time: 01-11?-2012 17:27:16 Tracing not turned on. Tns error struct: ns main err code: 12535 TNS-12535: TNS: ??????·???????? ns secondary err code: 12560 nt main err code: 505 TNS-00505: ??????????? nt secondary err code: 60 nt OS err code: 0 Client address: (ADDRESS=(PROTOCOL=tcp)(HOST=10.41.102.62)(PORT=1285)) Thu Nov 01 18:08:39 2012 Thread 1 advanced to log sequence 1885 (LGWR switch) Current log# 1 seq# 1885 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Thu Nov 01 18:08:40 2012 Archived Log entry 1123 added for thread 1 sequence 1884 ID 0xe48db805 dest 1: Thu Nov 01 19:33:21 2012 Thread 1 cannot allocate new log, sequence 1886 Private strand flush not complete Current log# 1 seq# 1885 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Thread 1 advanced to log sequence 1886 (LGWR switch) Current log# 2 seq# 1886 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO02.LOG Thu Nov 01 19:33:25 2012 Archived Log entry 1124 added for thread 1 sequence 1885 ID 0xe48db805 dest 1: Thu Nov 01 20:32:25 2012 Thread 1 cannot allocate new log, sequence 1887 Private strand flush not complete Current log# 2 seq# 1886 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO02.LOG Thread 1 advanced to log sequence 1887 (LGWR switch) Current log# 3 seq# 1887 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO03.LOG Thu Nov 01 20:32:29 2012 Archived Log entry 1125 added for thread 1 sequence 1886 ID 0xe48db805 dest 1: Thu Nov 01 21:13:07 2012 Thread 1 advanced to log sequence 1888 (LGWR switch) Current log# 1 seq# 1888 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Thu Nov 01 21:13:08 2012 Archived Log entry 1126 added for thread 1 sequence 1887 ID 0xe48db805 dest 1: Thu Nov 01 22:00:00 2012 Setting Resource Manager plan SCHEDULER[0x3006]:DEFAULT_MAINTENANCE_PLAN via scheduler window Setting Resource Manager plan DEFAULT_MAINTENANCE_PLAN via parameter Thu Nov 01 22:00:00 2012 Starting background process VKRM Thu Nov 01 22:00:00 2012 VKRM started with pid=32, OS id=4048 Thu Nov 01 22:00:59 2012 Thread 1 cannot allocate new log, sequence 1889 Private strand flush not complete Current log# 1 seq# 1888 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Thread 1 advanced to log sequence 1889 (LGWR switch) Current log# 2 seq# 1889 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO02.LOG Thu Nov 01 22:01:03 2012 Archived Log entry 1127 added for thread 1 sequence 1888 ID 0xe48db805 dest 1: Thu Nov 01 22:32:36 2012 Thread 1 advanced to log sequence 1890 (LGWR switch) Current log# 3 seq# 1890 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO03.LOG Thu Nov 01 22:32:37 2012 Archived Log entry 1128 added for thread 1 sequence 1889 ID 0xe48db805 dest 1: Thu Nov 01 22:33:18 2012 Errors in file d:\oracle\diag\rdbms\siporex\siporex\trace\siporex_ora_11884.trc (incident=101313): ORA-03137: TTC protocol internal error : [12333] [8] [49] [50] [] [] [] [] Incident details in: d:\oracle\diag\rdbms\siporex\siporex\incident\incdir_101313\siporex_ora_11884_i101313.trc Thu Nov 01 22:33:21 2012 Trace dumping is performing id=[cdmp_20121101223321] Thu Nov 01 22:40:43 2012 Thread 1 cannot allocate new log, sequence 1891 Private strand flush not complete Current log# 3 seq# 1890 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO03.LOG Thread 1 advanced to log sequence 1891 (LGWR switch) Current log# 1 seq# 1891 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Thu Nov 01 22:40:47 2012 Archived Log entry 1129 added for thread 1 sequence 1890 ID 0xe48db805 dest 1: Thu Nov 01 23:47:30 2012 Thread 1 cannot allocate new log, sequence 1892 Private strand flush not complete Current log# 1 seq# 1891 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Thread 1 advanced to log sequence 1892 (LGWR switch) Current log# 2 seq# 1892 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO02.LOG Thu Nov 01 23:47:34 2012 Archived Log entry 1130 added for thread 1 sequence 1891 ID 0xe48db805 dest 1: Fri Nov 02 00:49:31 2012 Thread 1 cannot allocate new log, sequence 1893 Private strand flush not complete Current log# 2 seq# 1892 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO02.LOG Thread 1 advanced to log sequence 1893 (LGWR switch) Current log# 3 seq# 1893 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO03.LOG Fri Nov 02 00:49:35 2012 Archived Log entry 1131 added for thread 1 sequence 1892 ID 0xe48db805 dest 1: Fri Nov 02 01:43:12 2012 Thread 1 cannot allocate new log, sequence 1894 Private strand flush not complete Current log# 3 seq# 1893 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO03.LOG Thread 1 advanced to log sequence 1894 (LGWR switch) Current log# 1 seq# 1894 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Fri Nov 02 01:43:17 2012 Archived Log entry 1132 added for thread 1 sequence 1893 ID 0xe48db805 dest 1: Fri Nov 02 01:52:51 2012 Errors in file d:\oracle\diag\rdbms\siporex\siporex\trace\siporex_ora_6124.trc (incident=101273): ORA-03137: TTC protocol internal error : [12333] [4] [80] [82] [] [] [] [] Incident details in: d:\oracle\diag\rdbms\siporex\siporex\incident\incdir_101273\siporex_ora_6124_i101273.trc Fri Nov 02 01:52:54 2012 Trace dumping is performing id=[cdmp_20121102015254] Fri Nov 02 02:00:00 2012 Clearing Resource Manager plan via parameter Fri Nov 02 02:43:37 2012 Thread 1 cannot allocate new log, sequence 1895 Private strand flush not complete Current log# 1 seq# 1894 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Thread 1 advanced to log sequence 1895 (LGWR switch) Current log# 2 seq# 1895 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO02.LOG Fri Nov 02 02:43:41 2012 Archived Log entry 1133 added for thread 1 sequence 1894 ID 0xe48db805 dest 1: Fri Nov 02 04:46:18 2012 Thread 1 cannot allocate new log, sequence 1896 Private strand flush not complete Current log# 2 seq# 1895 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO02.LOG Thread 1 advanced to log sequence 1896 (LGWR switch) Current log# 3 seq# 1896 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO03.LOG Fri Nov 02 04:46:22 2012 Archived Log entry 1134 added for thread 1 sequence 1895 ID 0xe48db805 dest 1: Fri Nov 02 04:51:41 2012 Errors in file d:\oracle\diag\rdbms\siporex\siporex\trace\siporex_ora_4048.trc (incident=101425): ORA-03137: TTC protocol internal error : [12333] [4] [67] [85] [] [] [] [] Incident details in: d:\oracle\diag\rdbms\siporex\siporex\incident\incdir_101425\siporex_ora_4048_i101425.trc Fri Nov 02 04:51:44 2012 Trace dumping is performing id=[cdmp_20121102045144] Fri Nov 02 05:54:44 2012 Thread 1 cannot allocate new log, sequence 1897 Private strand flush not complete Current log# 3 seq# 1896 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO03.LOG Thread 1 advanced to log sequence 1897 (LGWR switch) Current log# 1 seq# 1897 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Fri Nov 02 05:54:48 2012 Archived Log entry 1135 added for thread 1 sequence 1896 ID 0xe48db805 dest 1: Fri Nov 02 07:00:34 2012 Thread 1 cannot allocate new log, sequence 1898 Private strand flush not complete Current log# 1 seq# 1897 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Thread 1 advanced to log sequence 1898 (LGWR switch) Current log# 2 seq# 1898 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO02.LOG Fri Nov 02 07:00:38 2012 Archived Log entry 1136 added for thread 1 sequence 1897 ID 0xe48db805 dest 1: Fri Nov 02 08:32:41 2012 Thread 1 cannot allocate new log, sequence 1899 Private strand flush not complete Current log# 2 seq# 1898 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO02.LOG Thread 1 advanced to log sequence 1899 (LGWR switch) Current log# 3 seq# 1899 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO03.LOG Fri Nov 02 08:32:45 2012 Archived Log entry 1137 added for thread 1 sequence 1898 ID 0xe48db805 dest 1: Fri Nov 02 09:48:57 2012 Thread 1 advanced to log sequence 1900 (LGWR switch) Current log# 1 seq# 1900 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Fri Nov 02 09:48:58 2012 Archived Log entry 1138 added for thread 1 sequence 1899 ID 0xe48db805 dest 1: Fri Nov 02 10:18:15 2012 Thread 1 cannot allocate new log, sequence 1901 Private strand flush not complete Current log# 1 seq# 1900 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Thread 1 advanced to log sequence 1901 (LGWR switch) Current log# 2 seq# 1901 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO02.LOG Fri Nov 02 10:18:19 2012 Archived Log entry 1139 added for thread 1 sequence 1900 ID 0xe48db805 dest 1: Fri Nov 02 10:22:58 2012 Thread 1 cannot allocate new log, sequence 1902 Private strand flush not complete Current log# 2 seq# 1901 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO02.LOG Thread 1 advanced to log sequence 1902 (LGWR switch) Current log# 3 seq# 1902 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO03.LOG Fri Nov 02 10:23:02 2012 Archived Log entry 1140 added for thread 1 sequence 1901 ID 0xe48db805 dest 1: Fri Nov 02 10:27:38 2012 Thread 1 cannot allocate new log, sequence 1903 Checkpoint not complete Current log# 3 seq# 1902 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO03.LOG Thread 1 cannot allocate new log, sequence 1903 Private strand flush not complete Current log# 3 seq# 1902 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO03.LOG Thread 1 advanced to log sequence 1903 (LGWR switch) Current log# 1 seq# 1903 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Fri Nov 02 10:27:45 2012 Archived Log entry 1141 added for thread 1 sequence 1902 ID 0xe48db805 dest 1: Fri Nov 02 10:32:27 2012 Thread 1 cannot allocate new log, sequence 1904 Checkpoint not complete Current log# 1 seq# 1903 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Thread 1 cannot allocate new log, sequence 1904 Private strand flush not complete Current log# 1 seq# 1903 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO01.LOG Thread 1 advanced to log sequence 1904 (LGWR switch) Current log# 2 seq# 1904 mem# 0: D:\ORACLE\ORADATA\SIPOREX\REDO02.LOG Fri Nov 02 10:32:34 2012 Archived Log entry 1142 added for thread 1 sequence 1903 ID 0xe48db805 dest 1: Fri Nov 02 10:35:42 2012 Errors in file d:\oracle\diag\rdbms\siporex\siporex\trace\siporex_ora_15856.trc (incident=101353): ORA-03137: TTC protocol internal error : [12333] [8] [49] [50] [] [] [] [] Incident details in: d:\oracle\diag\rdbms\siporex\siporex\incident\incdir_101353\siporex_ora_15856_i101353.trc Fri Nov 02 10:35:44 2012 Trace dumping is performing id=[cdmp_20121102103544] I don't know main reason of this issue as well as how to fixing it. Please help me.

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• Recommendations on developing a WPF application without using MVVM or similar

  - by Metro Smurf

  We were building out the next version of an in-house thick-client application using WPF/Prism (Composite Application Library). As we were nearly done with the client our team was put under new management and shortly thereafter: We were then directed to drop the Prism framework to keep things simple. This includes not using any type of Inversion of Control. We were directed to build out the WPF application without using MVVM or similar; and more along the lines of a traditional WinForm application. The idea is that if a developer sees a control in Visual Studio’s designer view, then (s)he should be able to click on the control and see exactly what it's doing without having to traverse through a view-model (or similar). We have now been tasked with building out the WPF application using one primary Window, use a Frame Control to contain the content, and use a Ribbon outside of the frame for the menu items. Reason we were provided to use Frame Control: a. We will show a view in the Frame with a Page (not a user control) and then load the page in the Frame. b. When a new view is to be shown in the Frame, the current view (Page) will be closed/disposed and the new view (Page) will take its place in the Frame. c. When a developer looks at the Page in design view, (s)he will be able to click on any control and see exactly what is being done. Given the restrictions of 1 and 2 above, we’d like to present another method of building out the application that: Can be presented as an alternative to using the “Frame Methodology” (item 3 above) but still provides the same type of functionality. Does not use MVVM (see #1 and #2 above). Provided the direction we’ve been given, any suggestions as to an alternative we can present? I’d request that the responses be kept on the professional level and thank you in advance.

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• ssh tunneling with visualsvn

  - by DeveloperChris

  I have been asked to setup visualsvn for visual studio 2008 Due to firewall restrictions and server configuration. I need to use ssh tunneling. My problem is this. The local machine needs to connect to a gateway machine via ssh then connect to the subversion server so Local machine ---{ssh}--- gateway ---{ssh}-- subversion server I am not exactly sure of the correct process to do this. It appears that I must start a ssh process using plink to open a local port and forward that to the remote subversion server. eg: plink user@gateway -L 22:192.168.1.1:22 Then when visualsvn starts it uses tortoiseplink to make the actual connection through to the subversion server using svn+ssh://username@localhost:22/myrepo This seems very very clunky. firstly it needs several steps to setup the connection secondly I need plink running which leaves a command prompt on the desktop (clutter = yuck) lastly I need to use two different programs that do the same thing. (plink + tortoiseplink) The problem is that tortoiseplink doesn't run in the background. As soon as I connect to the ssh gateway and enter the password it closes again. So I can't use it to create the initial connection. If I use plink instead of tortoiseplink in visualsvn then I never get prompted for the password. so it just hangs with an open command prompt and no password request. Is there a way to setup visualsvn so that everything happens in one command line? I have searched high and low for a suitable and clean method to tunnel from visualsvn to the remote server and have found very little. it all either assumes one hop (not two like mine) or it glosses over all the hard bits. DC

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• LGPL and Dual Licensing Ajax Library

  - by Thomas Hansen

  Hi guys, I'm the previous founder of Gaiaware and Gaia Ajax Widgets and when I used to work there we had this rhetoric (which I have confirmed with some very smart FOSS people is correct) that when using a GPL Ajax library you're basically "distributing" the JavaScript which in turn makes the GPL viral clause kick in and forces people to purchase a proprietary license if they're going to build Closed Source stuff... So now I'm the the LGPL world here with Ra-Ajax which is an LGPL licensed library and I've got no intentions of creating a GPL licensed library since I believe strongly in that the LGPL is the "enabler" of the Open Web to prevail. But something interesting have happened which I think might still give me a "business model" here which is the Linking clause of the LGPL which I think goes something like this (pseudo); "If you link to an LGPL licensed thing you get no restrictions on your own derived works"... But so we started creating something we're calling Ajax Starter-Kits which effectively is a "Project Kickstarter" where you can download a finished project/solution which basically enables you to start out with some pre-done boiler plate code for problems such as Ajax DataGrids, Ajax Calendar Applications, Ajax TreeView Applications etc. And the funny thing is that our users would NOT "link" to these, they would effectively BE our users applications... So to wrap up my question. Would this force users of our LGPL licensed Ajax Starter-Kits to LGPL license their own work? Basically if it does we have a business model (and I get very happy) if not I'd just have to hope people would still like to pay us those $29 for our Starter-Kits to support the project... ;) Help rewarded with extreme gratitude...

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• Date query with Hibernate on Timestamp Column in PostgreSQL

  - by Shashikant Kore

  A table has timestamp column. A sample value in that could be 2010-03-30 13:42:42. With Hibernate, I am doing a range query Restrictions.between("column-name", fromDate, toDate). The Hibernate mapping for this column is as follows. <property name="orderTimestamp" column="order_timestamp" type="java.util.Date" /> Let's say, I want to find out all the records that have the date 30th March 2010 and 31st March 2010. A range query on this field is done as follows. Date fromDate = new SimpleDateFormat("yyyy-MM-dd").parse("2010-03-30"); Date toDate = new SimpleDateFormat("yyyy-MM-dd").parse("2008-03-31"); Expression.between("orderTimestamp", fromDate, toDate); This doesn't work. The query is converted to respective timestamps as "2010-03-30 00:00:00" and "2010-03-31 00:00:00". So, all the records for the 31st March 2010 are ignored. A simple solution to this problem could be to have the end date as "2010-03-31 23:59:59." But, I would like to know if there is way to match only the date part of the timestamp column. Also, is Expression.between() inclusive of both limits? Documentation doesn't throw any light on this.

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• Polymorphic NHibernate mappings

  - by Ben Aston

  I have an interface IUserLocation and a concrete type UserLocation. When I use ICriteria, specifying the interface IUserLocation, I want NHibernate to instantiate a collection of the concrete UserLocation type. I have created an HBM mapping file using the table per concrete type strategy (shown below). However, when I query NHibernate using ICriteria I get: NHibernate cannot instantiate abstract class or interface MyNamespace.IUserLocation Can anyone see why this is? (source code for the relevant bit of NHibernate here (I think)) My ICriteria: var filter = DetachedCriteria.For<IUserLocation>() .Add(Restrictions.Eq("UserId", userId)); return filter.GetExecutableCriteria(UoW.Session) .List<IUserLocation>(); My mapping file: <hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" default-lazy="true"> <class xmlns="urn:nhibernate-mapping-2.2" name="MyNamespace.IUserLocation,MyAssembly" abstract="true" table="IUserLocations"> <composite-id> <key-property name="UserId" column="UserId" type="System.Guid"></key-property> <key-many-to-one name="Location" column="LocationId" class="MyNamespace.ILocation,MyAssembly"></key-many-to-one> </composite-id> <union-subclass table="UserLocations" name="MyNamespace2.UserLocation,MyAssembly2"> <property name="IsAdmin" /> </union-subclass> </class> </hibernate-mapping>

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• How to pass a reference to a JS function as an argument to an ExternalInterface call?

  - by Ryan Wilson

  Summary I want to be able to call a JavaScript function from a Flex app using ExternalInterface and pass a reference to a different JavaScript function as an argument. Base Example Given the following JavaScript: function foo(callback) { // ... do some stuff callback(); } function bar() { // do some stuff that should happen after a call to foo } I want to call foo from my flex app using ExternalInterface and pass a reference to bar as the callback. Why Really,foo is not my function (but, rather, FB.Connect.showBookmarkDialog), which due to restrictions on Facebook iframe apps can only be called on a button click. My button, for design reasons, is in the Flex app. Fortunately, it's possible to call ExternalInterface.call("FB.Connect.showBookmarkDialog", callback) to display the bookmark dialog. But, FB.Connect.showBookmarkDialog requires a JS callback so, should I want to receive a callback (which I do), I need to pass a reference to a JS function as the single argument. Real Example MXML: <mx:Button click="showBookmarkDialog();" /> ActionScript: function showBookmarkDialog() : void { ExternalInterface.registerCallback( "onBookmarkDialogClosed", onBookmarkDialogClosed ); ExternalInterface.call( "FB.Connect.showBookmarkDialog", /* ref to JS function onBookmarkDialogClosed ? */ ); } function onBookmarkDialogClosed(success:Boolean) : void { // sweet, we made it back } JavaScript: function onBookmarkDialogClosed() { var success; // determine value of success getSWF().onBookmarkDialogClosed(success); } Failed Experiments I have tried... ExternalInterface.call( "FB.Connect.showBookmarkDialog", "onBookmarkDialogClosed" ); ExternalInterface.call( "FB.Connect.showBookmarkDialog", onBookmarkDialogClosed ); ExternalInterface.call( "FB.Connect.showBookmarkDialog", function() : void { ExternalInterface.call("onBookmarkDialogClosed"); } ); ExternalInterface.call( "FB.Connect.showBookmarkDialog", function() { this["onBookmarkDialogClosed"](); } ); Of note: Passing a string as the argument to an ExternalInterface call results in FB's JS basically trying to do `"onBookmarkDialogClosed"()` which, needless to say, will not work. Passing a function as the argument results in a function object on the other side (confirmable with `typeof`), but it seems to be an empty function; namely, `function Function() {}`

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