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  • Interaction between Java and Android

    - by Grasper
    I am currently trying to research how to use Android with an existing java based system. Basically, I need to communicate to/from an Android application. The system currently passes object data from computer to computer using ActiveMQ as the JMS provider. On one of the computers is a display which shows object data to the user. What we want to do now is use a phone (running Android) as another option to show this object data to a user with wifi/network access. Ideally we would like to have a native application on the Android that would listen to the ActiveMQ topic and publish to another Topic and read/write/display the object data, but from some research I have done, I am not sure if this is possible. What are some other ways to approach this problem? The android Phone needs to be able to send/receive data. I have been using the AndroidEmulator for testing.

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  • InnoDB Compression Improvements in MySQL 5.6

    - by Inaam Rana
    MySQL 5.6 comes with significant improvements for the compression support inside InnoDB. The enhancements that we'll talk about in this piece are also a good example of community contributions. The work on these was conceived, implemented and contributed by the engineers at Facebook. Before we plunge into the details let us familiarize ourselves with some of the key concepts surrounding InnoDB compression. In InnoDB compressed pages are fixed size. Supported sizes are 1, 2, 4, 8 and 16K. The compressed page size is specified at table creation time. InnoDB uses zlib for compression. InnoDB buffer pool will attempt to cache compressed pages like normal pages. However, whenever a page is actively used by a transaction, we'll always have the uncompressed version of the page as well i.e.: we can have a page in the buffer pool in compressed only form or in a state where we have both the compressed page and uncompressed version but we'll never have a page in uncompressed only form. On-disk we'll always only have the compressed page. When both compressed and uncompressed images are present in the buffer pool they are always kept in sync i.e.: changes are applied to both atomically. Recompression happens when changes are made to the compressed data. In order to minimize recompressions InnoDB maintains a modification log within a compressed page. This is the extra space available in the page after compression and it is used to log modifications to the compressed data thus avoiding recompressions. DELETE (and ROLLBACK of DELETE) and purge can be performed without recompressing the page. This is because the delete-mark bit and the system fields DB_TRX_ID and DB_ROLL_PTR are stored in uncompressed format on the compressed page. A record can be purged by shuffling entries in the compressed page directory. This can also be useful for updates of indexed columns, because UPDATE of a key is mapped to INSERT+DELETE+purge. A compression failure happens when we attempt to recompress a page and it does not fit in the fixed size. In such case, we first try to reorganize the page and attempt to recompress and if that fails as well then we split the page into two and recompress both pages. Now lets talk about the three major improvements that we made in MySQL 5.6.Logging of Compressed Page Images:InnoDB used to log entire compressed data on the page to the redo logs when recompression happens. This was an extra safety measure to guard against the rare case where an attempt is made to do recovery using a different zlib version from the one that was used before the crash. Because recovery is a page level operation in InnoDB we have to be sure that all recompress attempts must succeed without causing a btree page split. However, writing entire compressed data images to the redo log files not only makes the operation heavy duty but can also adversely affect flushing activity. This happens because redo space is used in a circular fashion and when we generate much more than normal redo we fill up the space much more quickly and in order to reuse the redo space we have to flush the corresponding dirty pages from the buffer pool.Starting with MySQL 5.6 a new global configuration parameter innodb_log_compressed_pages. The default value is true which is same as the current behavior. If you are sure that you are not going to attempt to recover from a crash using a different version of zlib then you should set this parameter to false. This is a dynamic parameter.Compression Level:You can now set the compression level that zlib should choose to compress the data. The global parameter is innodb_compression_level - the default value is 6 (the zlib default) and allowed values are 1 to 9. Again the parameter is dynamic i.e.: you can change it on the fly.Dynamic Padding to Reduce Compression Failures:Compression failures are expensive in terms of CPU. We go through the hoops of recompress, failure, reorganize, recompress, failure and finally page split. At the same time, how often we encounter compression failure depends largely on the compressibility of the data. In MySQL 5.6, courtesy of Facebook engineers, we have an adaptive algorithm based on per-index statistics that we gather about compression operations. The idea is that if a certain index/table is experiencing too many compression failures then we should try to pack the 16K uncompressed version of the page less densely i.e.: we let some space in the 16K page go unused in an attempt that the recompression won't end up in a failure. In other words, we dynamically keep adding 'pad' to the 16K page till we get compression failures within an agreeable range. It works the other way as well, that is we'll keep removing the pad if failure rate is fairly low. To tune the padding effort two configuration variables are exposed. innodb_compression_failure_threshold_pct: default 5, range 0 - 100,dynamic, implies the percentage of compress ops to fail before we start using to padding. Value 0 has a special meaning of disabling the padding. innodb_compression_pad_pct_max: default 50, range 0 - 75, dynamic, the  maximum percentage of uncompressed data page that can be reserved as pad.

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  • How the kernel gives seg. fault for a scenario like this?

    - by bala1486
    I have a doubt in accessing some invalid data. How will the OS cause segmentation fault for a scenario like this? Suppose a date segment has some 100 bytes. This will be mapped and a page table entry will be created. But the page size is 4K. Consider the data segment is aligned with this page boundary. So at first consider accessing a valid data within the 100 bytes. So now the page table entry is in TLB. Next if you try to access some invalid data between the 100 and 4K, the entry is there in page table and will it be allowed to access the invalid data??? Thanks, Bala

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  • Oracle Develop 2011 - Moscow and Hyderabad Editions

    - by Cassandra Clark
    Connect with Oracle developers at Oracle Develop - Oracle Develop will be held in Moscow, April 12-13th, 2011 and again in Hyderabad, May 10th - 11th, 2011. Enjoy two days of technical content and hands-on learning focused on Oracle products and next-generation development trends and technologies, including rich enterprise applications (REAs), service-oriented architecture (SOA), and the database.Oracle Develop Moscow Tracks - Database DevelopmentApplication Infrastructure and Oracle WeblogicOracle Fusion Development and Rich Enterprise ApplicationsService Oriented ArchitectureOracle Develop Hyderabad Tracks - Application Grid and Oracle WeblogicDatabase DevelopmentOracle Fusion Development and Rich Enterprise ApplicationsService Oriented Architecture.NET with Oracle DatabaseRegister Now for Oracle Develop Moscow!Register Now for Oracle Develop Hyderabad!

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  • How to Make Your Page Titles Keyword Rich

    In addition to including meta tags in your web pages, one of the most effective traffic generation technique is to include one of your main keywords in the page title tags. If you have a website with several pages, this should be done for all the pages of you website. Including the main keywords in your title is known to be one of the best traffic techniques which help in improving website ranking by search engines.

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  • Reused UIWebView showing previous loaded content for a brief second on iPhone

    - by Roi
    In one of my apps I reuse a webview. Each time the user enters a certain view on reload cached data to the webview using the method - (void)loadData:(NSData *)data MIMEType:(NSString *)MIMEType textEncodingName:(NSString *)encodingName baseURL:(NSURL *)baseURL and I wait for the callback call - (void) webViewDidFinishLoad:(UIWebView *)webView. In the mean time I hide the webview and show a 'loading' label. Only when I receive webViewDidFinishLoad do I show the webview. Many times what happens is I see the previous data that was loaded to the webview for a brief second before the new data I loaded kicks in. I already added a delay of 0.2 seconds before showing the webview but it didn't help. Instead of solving this by adding more time to the delay does anyone know how to solve this issue or maybe clear old data from a webview without release and allocating it every time?

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  • Android serialization: ImageView

    - by embo
    I have a simple class: public class Ball2 extends ImageView implements Serializable { public Ball2(Context context) { super(context); } } Serialization ok: private void saveState() throws IOException { ObjectOutputStream oos = new ObjectOutputStream(openFileOutput("data", MODE_PRIVATE)); try { Ball2 data = new Ball2(Game2.this); oos.writeObject(data); oos.flush(); } catch (Exception e) { Log.e("write error", e.getMessage(), e); } finally { oos.close(); } } But deserealization private void loadState() throws IOException { ObjectInputStream ois = new ObjectInputStream(openFileInput("data")); try { Ball2 data = (Ball2) ois.readObject(); } catch (Exception e) { Log.e("read error", e.getMessage(), e); } finally { ois.close(); } } fail with error: 03-24 21:52:43.305: ERROR/read error(1948): java.io.InvalidClassException: android.widget.ImageView; IllegalAccessException How deserialize object correctly?

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  • What happens to date-times and booleans when using DbLinq with SQLite?

    - by DanM
    I've been thinking about using SQLite for my next project, but I'm concerned that it seems to lack proper datetime and bit data types. If I use DbLinq (or some other ORM) to generate C# classes, will the data types of the properties be "dumbed down"? Will date-time data be placed in properties of type string or double? Will boolean data be placed in properties of type int? If yes, what are the implications? I'm imaging a scenario where I need to write a whole second layer of classes with more specific data types and do a bunch of transformations and casts, but maybe it's not so bad. If you have any experience with this or a similar scenario, what are your "lessons learned"?

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  • Updating a TableView with a WebService and Saving to CoreData

    - by jcady
    I am working on a project where I have a table view that is currently updated via a web request that returns XML. I implemented -(int)numberOfRowsInTableView:(NSTableView*)tv and -(id)tableView:(NSTableView *)tv objectValueForTableColumn:(NSTableColumn*)tableColumn row:(int)row in my XML parsing class, and have the table updated with the data that is pulled down from the server. I want to save the data that is pulled down using Core Data, so that the table can be saved/loaded. Then later on application start when the web request is made, it will only add data that is not already present. (The XML is sorted by release date, so later I will check to see which release dates are not loaded up from the Core Data store, and only load newer entries.) How would I go about implementing this? I am a very new Cocoa developer, but have gone through the entire Hillegass book. Thanks so much.

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  • Connecting to multiple firebird Databases via Delphi

    - by Branden
    I am integrating a system with 2 other applications, 1 using a Firebird database whilst the other BIS (using ADO). My delphi application uses Firebird. I need to read data from my database, insert it into both the BIS database and the other application firebird database. I have created seperate data modules for each. Sending data to the ADO works fine, but when writing to the other Firebird DB (my db still open) I get strange errors. I have managed to isolate the problem to the second firebird DB. Small data writes seems fine. The data structures are completly different, so un able to use a synch tool. is there a way to overcome this by using multi threading or seperate memory space each Firebird instance uses?

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  • Oracle SOA Suite - Highlighted Travel and Transportation Customer References

    - by Bruce Tierney
    0 0 1 1137 6483 - 54 15 7605 14.0 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; mso-ascii-font-family:Cambria; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Cambria; mso-hansi-theme-font:minor-latin;} Next in this series on industry-specific highlights of Oracle SOA Suite customers is the Travel and Transportation industry.  If you are in the travel or transportation industry, take a look at how these Oracle SOA Suite integration customers have addressed common business requirements to enable better customer service, lower costs, and deliver new business services. For example, All Nippon Airways (ANA) has significantly lowered management costs associated with their hybrid on-premise/cloud ticketing system deployments for domestic and international flights. Their lead-time for changes or new applications has been greatly reduced compared to their old mainframe-based systems, enabling ANA to rapidly develop new services in response to changing market needs. Another example is Schneider National, a leading provider of truckload logistics, and how they have integrated Oracle E-Business Suite, Siebel CRM, Oracle Transportation Management and customers applications using Oracle SOA Suite. Schneider National has 400 BPEL processes that generate over 60 million composite instances over five SOA clusters.  Take a deeper look into any of these case studies, videos, and Oracle Magazine articles that closely align with your industry:  Customers fly and airline succeeds with an IT transformation. Company:  All Nippon Airways  Customer Oracle or Profit Magazine Article   |   Travel and Transportation   |   Published on January 06, 2014 Any successful business must ensure ongoing customer satisfaction, respond to increased competition, and minimize costs. Running a successful airline in today’s economic climate requires all of those things, as well a... Openmatics Revolutionizes Fleet Management with Standards-Based Vehicle Telematics Platform New Company:  Openmatics s.r.o.  Customer Snapshot   |   Automotive   |   Published on May 20, 2014 Openmatics uses Oracle WebCenter Portal and Oracle Application Development Framework as a foundation for Openmatics, a vehicle telematics service for next-generation fleet management. It integrated its own app shop wi... Future Proof: To keep pace with mobile, social, and location-based services, smart technologists are using middleware to innovate Company:  SFpark  Customer Oracle or Profit Magazine Article   |   Professional Services   |   Published on August 01, 2012 Oracle Fusion Middleware is at the heart of a recently completed and very ambitious project to change how people handle the challenge of finding a parking space in San Francisco, California. “Parking is a universal is... Globalia Corporación Empresarial Accelerates Hotel Bookings, Boosts Sales by 40% with In-Memory Data Grid Solution Company:  Globalia Corporación Empresarial S.A.  Customer Snapshot   |   Travel and Transportation   |   Published on April 29, 2013 Globalia Corporación Empresarial S.A. deployed Oracle Coherence to reengineer the group’s core system for hotel bookings, now serving booking requests involving 80 hotels within an average response time of 100 millise... Choice Hotels Uses Oracle SOA Suite and Oracle BPM Suite to Modernize Global IT Architecture Company:  Choice Hotels  Press Release   |   Travel and Transportation   |   Published on August 07, 2012 Choice Hotels International, one of the largest and most successful hotel franchises in the world, has implemented Oracle SOA Suite and Oracle BPM Suite. Sascar Consolidates Fleet Management Infrastructure and Accelerates Customers’ Data Access Company:  Sascar  Customer Case Study   |   Travel and Transportation   |   Published on February 07, 2014 Description – Sascar used Oracle Exadata Database Machine, Oracle Exalogic Elastic Cloud and Oracle WebLogic Suite 11g to consolidate fleet management and perform real-time vehicle tracking 4x faster. Directorate General of Civil Aviation Streamlines Key Aviation Applications Access, Improves Productivity and Reduces Maintenance Costs Company:  Directorate General of Civil Aviation (DGAC)  Customer Snapshot   |   Travel and Transportation   |   Published on May 24, 2013 With Oracle Fusion Middleware, the Directorate General of Civil Aviation (DGAC) provided its 12,500 employees a virtual office environment that integrates team workspaces, business applications, and e-mails within a n... Schneider National Implements Next-Generation IT Infrastructure to Continue Leadership in Transportation and Logistics Industry Company:  Schneider National, Inc.  Customer Snapshot   |   Travel and Transportation   |   Published on February 26, 2013 Schneider National, Inc. deployed Oracle applications, Oracle Fusion Middleware, and Oracle development tools as the foundation for its next-generation IT environment, which is driving new levels of efficiency, profit... DGAC Cuts Subscription Costs with Oracle Company:  DGAC  Video   |   Travel and Transportation   |   Published on October 31, 2012 Using Oracle WebCenter Portal, Oracle SOA Suite, and Oracle Exalogic, DGAC reduces the cost of subscriptions to newsletters and provide to its 12,500 employees a collaborative workspace portal. Asiana Airlines Builds PIP System with Oracle Solutions Company:  Asiana Airlines  Video   |   Travel and Transportation   |   Published on July 26, 2012 With Oracle Exalogic and the Oracle SOA Suite, Asiana Airlines builds a passenger service integrated platform providing various services such as integration between its interface and internal systems and a data wareho... Choice Hotels Reduces Time to Market with Oracle WebCenter Company:  Choice Hotels  Video   |   Travel and Transportation   |   Published on April 11, 2014 Using Oracle WebCenter and Oracle SOA standardization, Choice Hotels consolidated multiple platforms, reduced IT dependency and realized tremendous benefits in total cost of ownership and faster time to market support... An Interview with Schneider National's Judy Lemke Company:  Schneider National  Video   |   Travel and Transportation   |   Published on December 17, 2013 Judy Lemke talks with Mark Sunday about the challenges Schneider National faced and how they overcame them through a companywide transformational change. For more details on these case studies, you can use this pre-filtered search on “Travel and Transportation” / “Middleware” / “Service Oriented Architecture” or browse on your own at www.oracle.com/customers

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  • Integrating with Oracle Fusion Applications: Discovering Integration Artifacts

    - by Simone Geib
    Rajesh Raheja, software architect at Oracle, has recently posted the first of a series of blogs on the topic of integrating with Oracle Fusion Applications, which is the next generation of enterprise applications built on top of Oracle Fusion Middleware. His goal is to share the ease with which integrations are now possible using standards-based technologies with enterprise applications. You can find his full blog post here.

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  • Will Outsourcing Your SEO Increase Your MLM Leads?

    Search engine optimization or SEO is absolutely booming in the MLM home business industry right now. Configuring your MLM website to look attractive to search engines will raise your page rank, put you higher in search results, and increase your organic traffic, and thus MLM lead generation.

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  • EntitySpaces 2008 Alpha Released

    - by Editor
    From the EntitySpaces Team: EntitySpaces 2008 Persistence Layer and Business Objects for Microsoft .NET We are very excited to offer this Alpha release for those who want to get a head start with EntitySpaces 2008 (ES2008). This Alpha release supports only C# class generation from within CodeSmith, and only supports Microsoft SqlServer. A subsequent [...]

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  • Abort a slow flush to disk after write?

    - by Therealstubot
    Is there a way to abort a python write operation in such a way that the OS doesn't feel it's necessary to flush the unwritten data to the disc? I'm writing data to a USB device, typically many megabytes. I'm using 4096 bytes as my block size on the write, but it appears that Linux caches up a bunch of data early on, and write it out to the USB device slowly. If at some point during the write, my user decides to cancel, I want the app to just stop writing immediately. I can see that there's a delay between when the data stops flowing from the application, and the USB activity light stops blinking. Several seconds, up to about 10 seconds typically. I find that the app is holding in the close() method, I'm assuming, waiting for the OS to finish writing the buffered data. I call flush() after every write, but that doesn't appear to have any impact on the delay. I've scoured the python docs for an answer but have found nothing.

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  • Crystal report - Conversion from text to decimal ?

    - by 123rmn
    I have a crystal report, which takes data from an XML template. For a particular field of report, say 'Cost' the database stored procedure send data to XSD file in decimal format , but when the crystal report displays data picking from XSD, it is rounded off. When i right click on other data fields of report, I can see 'Field:table1.columnname',. But when i click on 'Cost' field, it shows 'Text:'. To my understanding, this is a text field which is mapped to pick data from XSD and since the type is text, it gives result in text hence truncating the decimal. Please suggest how can I get decimals here. P.S: This code was created by someone else, so i have no idea on what they had set at that time. I have to fix it and i have no clue about it.

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  • Why is iOS "jailbreaking" CPU specific? [closed]

    - by Ted Wong
    Recently, iOS 6 was "jailbroken" but only on the Apple A4 CPU. Why is the "jailbreaking" process specific to a CPU? From Wikipedia: ... "iOS jailbreaking is the process of removing the limitations imposed by Apple on devices running the iOS operating system through the use of hardware/software exploits – such devices include the iPhone, iPod touch, iPad, and second generation Apple TV. Jailbreaking allows iOS users to gain root access to the operating system""" ...

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  • Would an ORM have any way of determining that a SQLite column contains date-times or booleans?

    - by DanM
    I've been thinking about using SQLite for my next project, but I'm concerned that it seems to lack proper datetime and bit data types. If I use DbLinq (or some other ORM) to generate C# classes, will the data types of the properties be "dumbed down"? Will date-time data be placed in properties of type string or double? Will boolean data be placed in properties of type int? If yes, what are the implications? I'm envisioning a scenario where I need to write a whole second layer of classes with more specific data types and do a bunch of transformations and casts, but maybe it's not as bad as I fear. If you have any experience with this or a similar scenario, how did you handle it?

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  • Best C# and SQL server reporting tool [closed]

    - by user65439
    What is the best reporting tool to use with C# applications? I have been playing around with Pentaho (a Java based reporting tool) but would prefer to work with something that integrate better with my c# and SQL server. The reporting requirements are extensive and I need a tool that can generate graphs etc. and can be called from within my c# code to automate and email these reports. Perhaps the people that is more experienced with report generation can help me out with some of the better applications used with C#

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  • Multiple vulnerabilities in Wireshark

    - by chandan
    CVE DescriptionCVSSv2 Base ScoreComponentProduct and Resolution CVE-2012-1593 Denial of Service (DoS) vulnerability 3.3 Wireshark Solaris 11 11/11 SRU 8.5 CVE-2012-1594 Improper Control of Generation of Code ('Code Injection') vulnerability 3.3 CVE-2012-1595 Resource Management Errors vulnerability 4.3 CVE-2012-1596 Resource Management Errors vulnerability 5.0 This notification describes vulnerabilities fixed in third-party components that are included in Sun's product distribution.Information about vulnerabilities affecting Oracle Sun products can be found on Oracle Critical Patch Updates and Security Alerts page.

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  • Generating Insert Statements

    This article from new author Oleg Netchaev describes the cursor-less script used to generate insert statements. This allows you to efficiently and easily add data generation statements to your project deployments.

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  • Oracle Magazine, March/April 2009

    Oracle Magazine March/April features articles on next-generation data centers, Oracle and midsize businesses, efficient business processes, improving performance and management of Oracle Database 11g, managing Oracle Application Express, Technologist Tom Kyte, Oracle ADF, PL/SQL best practices, the HP Oracle Database Machine, security with Oracle Configuration Manager and much more.

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  • BizTalk To Get Improvements and 2010 Branding

    Microsoft on Tuesday described a few BizTalk Server enhancements to come, as well as a new name for its next-generation enterprise server bus product....Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • A controller problem using a base CRUD model

    - by rkj
    In CodeIgniter I'm using a base CRUD My_model, but I have this small problem in my browse-controller.. My $data['posts'] gets all posts from the table called "posts". Though the author in that table is just a user_id, which is why I need to use my "getusername" function (gets the username from a ID - the ID) to grab the username from the users table. Though I don't know how to proceed from here, since it is not just one post. Therefore I need the username to either be a part of the $data['posts'] array or some other smart solution. Anyone who can help me out? function index() { $this->load->model('browse_model'); $data['posts'] = $this->browse_model->get_all(); $data['user'] = $this->browse_model->getusername(XX); $this->load->view('header'); $this->load->view('browse/index', $data); $this->load->view('footer'); }

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