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• Severe mysqldump performance degradation using Centos Linux, 8GB PAE and MySQL 5.0.77

  - by Duncan Harris

  We use MySQL 5.0.77 on CentOS 5.5 on VMWare: Linux dev.ic.soschildrensvillages.org.uk 2.6.18-194.11.4.el5PAE #1 SMP Tue Sep 21 05:48:23 EDT 2010 i686 i686 i386 GNU/Linux We have recently upgraded from 4GB RAM to 8GB. When we did this the time of our mysqldump overnight backup jumped from under 10 minutes to over 2 hours. It also caused unresponsiveness on our plone based web site due to database load. The dump is using the optimized mysqldump format and is spooled directly through a socket to another server. Any ideas on what we could do to fix gratefully appreciated. Would a MySQL upgrade help? Anything we can do to MySQL config? Anything we can do to Linux config? Or do we have to add another server or go to 64-bit? We ran a previous (non-virtual) server on 6GB PAE and didn't notice a similar issue. This was on same MySQL version, but Centos 4.4. Server config file: [mysqld] port=3307 socket=/tmp/mysql_live.sock wait_timeout=31536000 interactive_timeout=31536000 datadir=/var/mysql/live/data user=mysql max_connections = 200 max_allowed_packet = 64M table_cache = 2048 binlog_cache_size = 128K max_heap_table_size = 32M sort_buffer_size = 2M join_buffer_size = 2M lower_case_table_names = 1 innodb_data_file_path = ibdata1:10M:autoextend innodb_buffer_pool_size=1G innodb_log_file_size=300M innodb_log_buffer_size=8M innodb_flush_log_at_trx_commit=1 innodb_file_per_table [mysqldump] # Do not buffer the whole result set in memory before writing it to # file. Required for dumping very large tables quick max_allowed_packet = 64M [mysqld_safe] # Increase the amount of open files allowed per process. Warning: Make # sure you have set the global system limit high enough! The high value # is required for a large number of opened tables open-files-limit = 8192 Server variables: mysql> show variables; +---------------------------------+------------------------------------------------------------------+ | Variable_name | Value | +---------------------------------+------------------------------------------------------------------+ | auto_increment_increment | 1 | | auto_increment_offset | 1 | | automatic_sp_privileges | ON | | back_log | 50 | | basedir | /usr/local/mysql-5.0.77-linux-i686-glibc23/ | | binlog_cache_size | 131072 | | bulk_insert_buffer_size | 8388608 | | character_set_client | latin1 | | character_set_connection | latin1 | | character_set_database | latin1 | | character_set_filesystem | binary | | character_set_results | latin1 | | character_set_server | latin1 | | character_set_system | utf8 | | character_sets_dir | /usr/local/mysql-5.0.77-linux-i686-glibc23/share/mysql/charsets/ | | collation_connection | latin1_swedish_ci | | collation_database | latin1_swedish_ci | | collation_server | latin1_swedish_ci | | completion_type | 0 | | concurrent_insert | 1 | | connect_timeout | 10 | | datadir | /var/mysql/live/data/ | | date_format | %Y-%m-%d | | datetime_format | %Y-%m-%d %H:%i:%s | | default_week_format | 0 | | delay_key_write | ON | | delayed_insert_limit | 100 | | delayed_insert_timeout | 300 | | delayed_queue_size | 1000 | | div_precision_increment | 4 | | keep_files_on_create | OFF | | engine_condition_pushdown | OFF | | expire_logs_days | 0 | | flush | OFF | | flush_time | 0 | | ft_boolean_syntax | + -><()~*:""&| | | ft_max_word_len | 84 | | ft_min_word_len | 4 | | ft_query_expansion_limit | 20 | | ft_stopword_file | (built-in) | | group_concat_max_len | 1024 | | have_archive | YES | | have_bdb | NO | | have_blackhole_engine | YES | | have_compress | YES | | have_crypt | YES | | have_csv | YES | | have_dynamic_loading | YES | | have_example_engine | NO | | have_federated_engine | YES | | have_geometry | YES | | have_innodb | YES | | have_isam | NO | | have_merge_engine | YES | | have_ndbcluster | DISABLED | | have_openssl | DISABLED | | have_ssl | DISABLED | | have_query_cache | YES | | have_raid | NO | | have_rtree_keys | YES | | have_symlink | YES | | hostname | app.ic.soschildrensvillages.org.uk | | init_connect | | | init_file | | | init_slave | | | innodb_additional_mem_pool_size | 1048576 | | innodb_autoextend_increment | 8 | | innodb_buffer_pool_awe_mem_mb | 0 | | innodb_buffer_pool_size | 1073741824 | | innodb_checksums | ON | | innodb_commit_concurrency | 0 | | innodb_concurrency_tickets | 500 | | innodb_data_file_path | ibdata1:10M:autoextend | | innodb_data_home_dir | | | innodb_adaptive_hash_index | ON | | innodb_doublewrite | ON | | innodb_fast_shutdown | 1 | | innodb_file_io_threads | 4 | | innodb_file_per_table | ON | | innodb_flush_log_at_trx_commit | 1 | | innodb_flush_method | | | innodb_force_recovery | 0 | | innodb_lock_wait_timeout | 50 | | innodb_locks_unsafe_for_binlog | OFF | | innodb_log_arch_dir | | | innodb_log_archive | OFF | | innodb_log_buffer_size | 8388608 | | innodb_log_file_size | 314572800 | | innodb_log_files_in_group | 2 | | innodb_log_group_home_dir | ./ | | innodb_max_dirty_pages_pct | 90 | | innodb_max_purge_lag | 0 | | innodb_mirrored_log_groups | 1 | | innodb_open_files | 300 | | innodb_rollback_on_timeout | OFF | | innodb_support_xa | ON | | innodb_sync_spin_loops | 20 | | innodb_table_locks | ON | | innodb_thread_concurrency | 8 | | innodb_thread_sleep_delay | 10000 | | interactive_timeout | 31536000 | | join_buffer_size | 2097152 | | key_buffer_size | 8384512 | | key_cache_age_threshold | 300 | | key_cache_block_size | 1024 | | key_cache_division_limit | 100 | | language | /usr/local/mysql-5.0.77-linux-i686-glibc23/share/mysql/english/ | | large_files_support | ON | | large_page_size | 0 | | large_pages | OFF | | lc_time_names | en_US | | license | GPL | | local_infile | ON | | locked_in_memory | OFF | | log | OFF | | log_bin | OFF | | log_bin_trust_function_creators | OFF | | log_error | | | log_queries_not_using_indexes | OFF | | log_slave_updates | OFF | | log_slow_queries | OFF | | log_warnings | 1 | | long_query_time | 10 | | low_priority_updates | OFF | | lower_case_file_system | OFF | | lower_case_table_names | 1 | | max_allowed_packet | 67108864 | | max_binlog_cache_size | 4294963200 | | max_binlog_size | 1073741824 | | max_connect_errors | 10 | | max_connections | 200 | | max_delayed_threads | 20 | | max_error_count | 64 | | max_heap_table_size | 33554432 | | max_insert_delayed_threads | 20 | | max_join_size | 18446744073709551615 | | max_length_for_sort_data | 1024 | | max_prepared_stmt_count | 16382 | | max_relay_log_size | 0 | | max_seeks_for_key | 4294967295 | | max_sort_length | 1024 | | max_sp_recursion_depth | 0 | | max_tmp_tables | 32 | | max_user_connections | 0 | | max_write_lock_count | 4294967295 | | multi_range_count | 256 | | myisam_data_pointer_size | 6 | | myisam_max_sort_file_size | 2146435072 | | myisam_recover_options | OFF | | myisam_repair_threads | 1 | | myisam_sort_buffer_size | 8388608 | | myisam_stats_method | nulls_unequal | | ndb_autoincrement_prefetch_sz | 1 | | ndb_force_send | ON | | ndb_use_exact_count | ON | | ndb_use_transactions | ON | | ndb_cache_check_time | 0 | | ndb_connectstring | | | net_buffer_length | 16384 | | net_read_timeout | 30 | | net_retry_count | 10 | | net_write_timeout | 60 | | new | OFF | | old_passwords | OFF | | open_files_limit | 8192 | | optimizer_prune_level | 1 | | optimizer_search_depth | 62 | | pid_file | /var/mysql/live/mysqld.pid | | plugin_dir | | | port | 3307 | | preload_buffer_size | 32768 | | profiling | OFF | | profiling_history_size | 15 | | protocol_version | 10 | | query_alloc_block_size | 8192 | | query_cache_limit | 1048576 | | query_cache_min_res_unit | 4096 | | query_cache_size | 0 | | query_cache_type | ON | | query_cache_wlock_invalidate | OFF | | query_prealloc_size | 8192 | | range_alloc_block_size | 4096 | | read_buffer_size | 131072 | | read_only | OFF | | read_rnd_buffer_size | 262144 | | relay_log | | | relay_log_index | | | relay_log_info_file | relay-log.info | | relay_log_purge | ON | | relay_log_space_limit | 0 | | rpl_recovery_rank | 0 | | secure_auth | OFF | | secure_file_priv | | | server_id | 0 | | skip_external_locking | ON | | skip_networking | OFF | | skip_show_database | OFF | | slave_compressed_protocol | OFF | | slave_load_tmpdir | /tmp/ | | slave_net_timeout | 3600 | | slave_skip_errors | OFF | | slave_transaction_retries | 10 | | slow_launch_time | 2 | | socket | /tmp/mysql_live.sock | | sort_buffer_size | 2097152 | | sql_big_selects | ON | | sql_mode | | | sql_notes | ON | | sql_warnings | OFF | | ssl_ca | | | ssl_capath | | | ssl_cert | | | ssl_cipher | | | ssl_key | | | storage_engine | MyISAM | | sync_binlog | 0 | | sync_frm | ON | | system_time_zone | GMT | | table_cache | 2048 | | table_lock_wait_timeout | 50 | | table_type | MyISAM | | thread_cache_size | 0 | | thread_stack | 196608 | | time_format | %H:%i:%s | | time_zone | SYSTEM | | timed_mutexes | OFF | | tmp_table_size | 33554432 | | tmpdir | /tmp/ | | transaction_alloc_block_size | 8192 | | transaction_prealloc_size | 4096 | | tx_isolation | REPEATABLE-READ | | updatable_views_with_limit | YES | | version | 5.0.77 | | version_comment | MySQL Community Server (GPL) | | version_compile_machine | i686 | | version_compile_os | pc-linux-gnu | | wait_timeout | 31536000 | +---------------------------------+------------------------------------------------------------------+ 237 rows in set (0.00 sec)

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• Looking for advice on Hyper-v storage replication

  - by Notre1

  I am designing a 2-host Hyper-V R2 cluster with 6-10 guests stored on a SMB iSCSI SAN device (probably Promise VessRAID). I will be getting at least two of the SAN devices and need to eliminate the storage a single point of failure. Ideally, that would involve real-time failover for the storage, like the Windows failover clustering does for the hosts. This design will be used at around six of our sites, and I would like to allow for us to eventually setup a cluster at colocation site and replicate each site's VMs there for DR. (Ideally a live multi-site cluster, but a manual import of the VMs would be fine for this sort of DR.) The tools that come with enterprise SANs, like EMC and NetApp, seem to be the most commonly used items for a Hyper-V cluster, but I can't afford their prices with my budget. Outside of them, the two tools that seem to be most common for Hyper-V storage replication are SteelEye (now SIOS) DataKeeper Cluster Edition and Double-Take Availability. Originally, I was planning on using Clustered Shared Volume(s) (CSV), but it seems like replication support for these is either not available or brand new in both these products. It looks like CSVs are supported in Double-Take 5.22, see this discussion, but I don't think I want to run something that new in production. Right now, it seems like the best option for me is not to implement CSVs, implement some sort of storage replication, and upgrade to CSVs at a later date once replicating them is more mature. I would love to have live migration, and CSVs are not required for live migration if you are using one LUN per VM, so I guess this is what I'll do. I would prefer to stick to the using the Microsoft Windows Server and Hyper-V tools and features as much as possible. From that standpoint, SteelEye looks more appealing than Double-Take because they make the DataKeeper volume(s) available to the Failover Clustering Manager and then failover clustering is all configured and managed through the native Microsoft tools. Double-Take says that "clustered Hyper-V hosts are not supported," and Double-Take Availability itself seems to be what is used for the actual clustering and failover. Does anyone know if any of these replication tools work with more than two hosts in the cluster? All the information I can find on the web only uses two hosts in their examples. Are there any better tools than SteelEye and Double-Take for doing what I am trying to do, which is eliminate the storage as as single point of failure? Neverfail, AppAssure, and DataCore all seem to offer similar functionality, but they don't seems to be as popular as SteelEye and Double-Take. I have seen a number of people suggest using Starwind iSCSI SAN software for the shared storage, which includes replication (and CSV replication at that). There are a couple of reasons I have not seriously considered this route: 1) The company I work for is exclusively a Dell shop and Dell does not have any servers with that I can pack with more than six 3.5" SATA drives. 2) In the future, it could be advantegous for us to not be locked into a particular brand or type of storage and third-party replication softwares all allow replication to heterogeneous storage devices. I am pretty new to iSCSI and clustering, so please let me know if it looks like I am planning something that goes against best practices or overlooking/missing something.

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• Looking for advice on Hyper-v storage replication

  - by Notre1

  I am designing a 2-host Hyper-V R2 cluster with 6-10 guests stored on a SMB iSCSI SAN device (probably Promise VessRAID). I will be getting at least two of the SAN devices and need to eliminate the storage a single point of failure. Ideally, that would involve real-time failover for the storage, like the Windows failover clustering does for the hosts. This design will be used at around six of our sites, and I would like to allow for us to eventually setup a cluster at colocation site and replicate each site's VMs there for DR. (Ideally a live multi-site cluster, but a manual import of the VMs would be fine for this sort of DR.) The tools that come with enterprise SANs, like EMC and NetApp, seem to be the most commonly used items for a Hyper-V cluster, but I can't afford their prices with my budget. Outside of them, the two tools that seem to be most common for Hyper-V storage replication are SteelEye (now SIOS) DataKeeper Cluster Edition and Double-Take Availability. Originally, I was planning on using Clustered Shared Volume(s) (CSV), but it seems like replication support for these is either not available or brand new in both these products. It looks like CSVs are supported in Double-Take 5.22, see this discussion, but I don't think I want to run something that new in production. Right now, it seems like the best option for me is not to implement CSVs, implement some sort of storage replication, and upgrade to CSVs at a later date once replicating them is more mature. I would love to have live migration, and CSVs are not required for live migration if you are using one LUN per VM, so I guess this is what I'll do. I would prefer to stick to the using the Microsoft Windows Server and Hyper-V tools and features as much as possible. From that standpoint, SteelEye looks more appealing than Double-Take because they make the DataKeeper volume(s) available to the Failover Clustering Manager and then failover clustering is all configured and managed through the native Microsoft tools. Double-Take says that "clustered Hyper-V hosts are not supported," and Double-Take Availability itself seems to be what is used for the actual clustering and failover. Does anyone know if any of these replication tools work with more than two hosts in the cluster? All the information I can find on the web only uses two hosts in their examples. Are there any better tools than SteelEye and Double-Take for doing what I am trying to do, which is eliminate the storage as as single point of failure? Neverfail, AppAssure, and DataCore all seem to offer similar functionality, but they don't seems to be as popular as SteelEye and Double-Take. I have seen a number of people suggest using Starwind iSCSI SAN software for the shared storage, which includes replication (and CSV replication at that). There are a couple of reasons I have not seriously considered this route: 1) The company I work for is exclusively a Dell shop and Dell does not have any servers with that I can pack with more than six 3.5" SATA drives. 2) In the future, it could be advantegous for us to not be locked into a particular brand or type of storage and third-party replication softwares all allow replication to heterogeneous storage devices. I am pretty new to iSCSI and clustering, so please let me know if it looks like I am planning something that goes against best practices or overlooking/missing something.

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• Netflix, jQuery, JSONP, and OData

  - by Latest Microsoft Blogs

  At the last MIX conference, Netflix announced that they are exposing their catalog of movie information using the OData protocol. This is great news! This means that you can take advantage of all of the advanced OData querying features against a live Read More......(read more)

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• Dynamic connection for LINQ to SQL DataContext

  - by Steve Clements

  If for some reason you need to specify a specific connection string for a DataContext, you can of course pass the connection string when you initialise you DataContext object.  A common scenario could be a dev/test/stage/live connection string, but in my case its for either a live or archive database.   I however want the connection string to be handled by the DataContext, there are probably lots of different reasons someone would want to do this…but here are mine. I want the same connection string for all instances of DataContext, but I don’t know what it is yet! I prefer the clean code and ease of not using a constructor parameter. The refactoring of using a constructor parameter could be a nightmare.   So my approach is to create a new partial class for the DataContext and handle empty constructor in there. First from within the LINQ to SQL designer I changed the connection property to None.  This will remove the empty constructor code from the auto generated designer.cs file. Right click on the .dbml file, click View Code and a file and class is created for you! You’ll see the new class created in solutions explorer and the file will open. We are going to be playing with constructors so you need to add the inheritance from System.Data.Linq.DataContext public partial class DataClasses1DataContext : System.Data.Linq.DataContext    {    }   Add the empty constructor and I have added a property that will get my connection string, you will have whatever logic you need to decide and get the connection string you require.  In my case I will be hitting a database, but I have omitted that code. public partial class DataClasses1DataContext : System.Data.Linq.DataContext {    // Connection String Keys - stored in web.config    static string LiveConnectionStringKey = "LiveConnectionString";    static string ArchiveConnectionStringKey = "ArchiveConnectionString";      protected static string ConnectionString    {       get       {          if (DoIWantToUseTheLiveConnection) {             return global::System.Configuration.ConfigurationManager.ConnectionStrings[LiveConnectionStringKey].ConnectionString;          }          else {             return global::System.Configuration.ConfigurationManager.ConnectionStrings[ArchiveConnectionStringKey].ConnectionString;          }       }    }      public DataClasses1DataContext() :       base(ConnectionString, mappingSource)    {       OnCreated();    } }   Now when I new up my DataContext, I can just leave the constructor empty and my partial class will decide which one i need to use. Nice, clean code that can be easily refractored and tested.   Share this post :

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• ASP.NET AJAX Microsoft tutorial

  - by Yousef_Jadallah

  Many people asking about the previous link of ASP.NET AJAX 1.0 documentation that started with  http://www.asp.net/ajax/documentation/live which support .NET 2. Actually, this link has been removed but instead you can visit  http://msdn.microsoft.com/en-us/library/bb398874.aspx which illustrate the version that Supported for .NET  4, 3.5 . Hope this help.

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• how to solve eclipse's Type The project was not built due to "Could not delete

  - by user50680

  when I change a properties file's content, Eclipse always show error,say "Description Resource Path Location Type The project was not built due to "Could not delete '/lichong-test-tester/target/test-classes/config'.". Fix the problem, then try refreshing this project and building it since it may be inconsistent lichong-test-tester Unknown Java Problem ". I have to clean and rebuild whole project to solve this problem ,can anybody tell me how to avoid this. https://skydrive.live.com/redir.aspx?cid=02a1e6543b4cc73e&resid=2A1E6543B4CC73E!458&parid=root that's my Screenshot

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• SSIS packages incompatibilities between SSIS 2008 and SSIS 2008 R2

  - by Marco Russo (SQLBI)

  When you install SQL 2008 R2 workstation components you get a newer version of BIDS (BI Developer Studio, included in the workstation components) that replaces BIDS 2008 version (BIDS 2005 still live side-by-side). Everything would be good if you can use the newer version to edit any 2008 AND 2008R2 project. SSIS editor doesn't offer a way to set the "compatibility level" of the package, becuase it is almost all unchanged. However, if a package has an ADO.NET Destination Adapter, there is a difference...(read more)

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• An Introduction to Meteor

  - by Stephen.Walther

  The goal of this blog post is to give you a brief introduction to Meteor which is a framework for building Single Page Apps. In this blog entry, I provide a walkthrough of building a simple Movie database app. What is special about Meteor? Meteor has two jaw-dropping features: Live HTML – If you make any changes to the HTML, CSS, JavaScript, or data on the server then every client shows the changes automatically without a browser refresh. For example, if you change the background color of a page to yellow then every open browser will show the new yellow background color without a refresh. Or, if you add a new movie to a collection of movies, then every open browser will display the new movie automatically. With Live HTML, users no longer need a refresh button. Changes to an application happen everywhere automatically without any effort. The Meteor framework handles all of the messy details of keeping all of the clients in sync with the server for you. Latency Compensation – When you modify data on the client, these modifications appear as if they happened on the server without any delay. For example, if you create a new movie then the movie appears instantly. However, that is all an illusion. In the background, Meteor updates the database with the new movie. If, for whatever reason, the movie cannot be added to the database then Meteor removes the movie from the client automatically. Latency compensation is extremely important for creating a responsive web application. You want the user to be able to make instant modifications in the browser and the framework to handle the details of updating the database without slowing down the user. Installing Meteor Meteor is licensed under the open-source MIT license and you can start building production apps with the framework right now. Be warned that Meteor is still in the “early preview” stage. It has not reached a 1.0 release. According to the Meteor FAQ, Meteor will reach version 1.0 in “More than a month, less than a year.” Don’t be scared away by that. You should be aware that, unlike most open source projects, Meteor has financial backing. The Meteor project received an $11.2 million round of financing from Andreessen Horowitz. So, it would be a good bet that this project will reach the 1.0 mark. And, if it doesn’t, the framework as it exists right now is still very powerful. Meteor runs on top of Node.js. You write Meteor apps by writing JavaScript which runs both on the client and on the server. You can build Meteor apps on Windows, Mac, or Linux (Although the support for Windows is still officially unofficial). If you want to install Meteor on Windows then download the MSI from the following URL: http://win.meteor.com/ If you want to install Meteor on Mac/Linux then run the following CURL command from your terminal: curl https://install.meteor.com | /bin/sh Meteor will install all of its dependencies automatically including Node.js. However, I recommend that you install Node.js before installing Meteor by installing Node.js from the following address: http://nodejs.org/ If you let Meteor install Node.js then Meteor won’t install NPM which is the standard package manager for Node.js. If you install Node.js and then you install Meteor then you get NPM automatically. Creating a New Meteor App To get a sense of how Meteor works, I am going to walk through the steps required to create a simple Movie database app. Our app will display a list of movies and contain a form for creating a new movie. The first thing that we need to do is create our new Meteor app. Open a command prompt/terminal window and execute the following command: Meteor create MovieApp After you execute this command, you should see something like the following: Follow the instructions: execute cd MovieApp to change to your MovieApp directory, and run the meteor command. Executing the meteor command starts Meteor on port 3000. Open up your favorite web browser and navigate to http://localhost:3000 and you should see the default Meteor Hello World page: Open up your favorite development environment to see what the Meteor app looks like. Open the MovieApp folder which we just created. Here’s what the MovieApp looks like in Visual Studio 2012: Notice that our MovieApp contains three files named MovieApp.css, MovieApp.html, and MovieApp.js. In other words, it contains a Cascading Style Sheet file, an HTML file, and a JavaScript file. Just for fun, let’s see how the Live HTML feature works. Open up multiple browsers and point each browser at http://localhost:3000. Now, open the MovieApp.html page and modify the text “Hello World!” to “Hello Cruel World!” and save the change. The text in all of the browsers should update automatically without a browser refresh. Pretty amazing, right? Controlling Where JavaScript Executes You write a Meteor app using JavaScript. Some of the JavaScript executes on the client (the browser) and some of the JavaScript executes on the server and some of the JavaScript executes in both places. For a super simple app, you can use the Meteor.isServer and Meteor.isClient properties to control where your JavaScript code executes. For example, the following JavaScript contains a section of code which executes on the server and a section of code which executes in the browser: if (Meteor.isClient) { console.log("Hello Browser!"); } if (Meteor.isServer) { console.log("Hello Server!"); } console.log("Hello Browser and Server!"); When you run the app, the message “Hello Browser!” is written to the browser JavaScript console. The message “Hello Server!” is written to the command/terminal window where you ran Meteor. Finally, the message “Hello Browser and Server!” is execute on both the browser and server and the message appears in both places. For simple apps, using Meteor.isClient and Meteor.isServer to control where JavaScript executes is fine. For more complex apps, you should create separate folders for your server and client code. Here are the folders which you can use in a Meteor app: · client – This folder contains any JavaScript which executes only on the client. · server – This folder contains any JavaScript which executes only on the server. · common – This folder contains any JavaScript code which executes on both the client and server. · lib – This folder contains any JavaScript files which you want to execute before any other JavaScript files. · public – This folder contains static application assets such as images. For the Movie App, we need the client, server, and common folders. Delete the existing MovieApp.js, MovieApp.html, and MovieApp.css files. We will create new files in the right locations later in this walkthrough. Combining HTML, CSS, and JavaScript Files Meteor combines all of your JavaScript files, and all of your Cascading Style Sheet files, and all of your HTML files automatically. If you want to create one humongous JavaScript file which contains all of the code for your app then that is your business. However, if you want to build a more maintainable application, then you should break your JavaScript files into many separate JavaScript files and let Meteor combine them for you. Meteor also combines all of your HTML files into a single file. HTML files are allowed to have the following top-level elements: <head> — All <head> files are combined into a single <head> and served with the initial page load. <body> — All <body> files are combined into a single <body> and served with the initial page load. <template> — All <template> files are compiled into JavaScript templates. Because you are creating a single page app, a Meteor app typically will contain a single HTML file for the <head> and <body> content. However, a Meteor app typically will contain several template files. In other words, all of the interesting stuff happens within the <template> files. Displaying a List of Movies Let me start building the Movie App by displaying a list of movies. In order to display a list of movies, we need to create the following four files: · client\movies.html – Contains the HTML for the <head> and <body> of the page for the Movie app. · client\moviesTemplate.html – Contains the HTML template for displaying the list of movies. · client\movies.js – Contains the JavaScript for supplying data to the moviesTemplate. · server\movies.js – Contains the JavaScript for seeding the database with movies. After you create these files, your folder structure should looks like this: Here’s what the client\movies.html file looks like: <head> <title>My Movie App</title> </head> <body> <h1>Movies</h1> {{> moviesTemplate }} </body>   Notice that it contains <head> and <body> top-level elements. The <body> element includes the moviesTemplate with the syntax {{> moviesTemplate }}. The moviesTemplate is defined in the client/moviesTemplate.html file: <template name="moviesTemplate"> <ul> {{#each movies}} <li> {{title}} </li> {{/each}} </ul> </template> By default, Meteor uses the Handlebars templating library. In the moviesTemplate above, Handlebars is used to loop through each of the movies using {{#each}}…{{/each}} and display the title for each movie using {{title}}. The client\movies.js JavaScript file is used to bind the moviesTemplate to the Movies collection on the client. Here’s what this JavaScript file looks like: // Declare client Movies collection Movies = new Meteor.Collection("movies"); // Bind moviesTemplate to Movies collection Template.moviesTemplate.movies = function () { return Movies.find(); }; The Movies collection is a client-side proxy for the server-side Movies database collection. Whenever you want to interact with the collection of Movies stored in the database, you use the Movies collection instead of communicating back to the server. The moviesTemplate is bound to the Movies collection by assigning a function to the Template.moviesTemplate.movies property. The function simply returns all of the movies from the Movies collection. The final file which we need is the server-side server\movies.js file: // Declare server Movies collection Movies = new Meteor.Collection("movies"); // Seed the movie database with a few movies Meteor.startup(function () { if (Movies.find().count() == 0) { Movies.insert({ title: "Star Wars", director: "Lucas" }); Movies.insert({ title: "Memento", director: "Nolan" }); Movies.insert({ title: "King Kong", director: "Jackson" }); } }); The server\movies.js file does two things. First, it declares the server-side Meteor Movies collection. When you declare a server-side Meteor collection, a collection is created in the MongoDB database associated with your Meteor app automatically (Meteor uses MongoDB as its database automatically). Second, the server\movies.js file seeds the Movies collection (MongoDB collection) with three movies. Seeding the database gives us some movies to look at when we open the Movies app in a browser. Creating New Movies Let me modify the Movies Database App so that we can add new movies to the database of movies. First, I need to create a new template file – named client\movieForm.html – which contains an HTML form for creating a new movie: <template name="movieForm"> <fieldset> <legend>Add New Movie</legend> <form> <div> <label> Title: <input id="title" /> </label> </div> <div> <label> Director: <input id="director" /> </label> </div> <div> <input type="submit" value="Add Movie" /> </div> </form> </fieldset> </template> In order for the new form to show up, I need to modify the client\movies.html file to include the movieForm.html template. Notice that I added {{> movieForm }} to the client\movies.html file: <head> <title>My Movie App</title> </head> <body> <h1>Movies</h1> {{> moviesTemplate }} {{> movieForm }} </body> After I make these modifications, our Movie app will display the form: The next step is to handle the submit event for the movie form. Below, I’ve modified the client\movies.js file so that it contains a handler for the submit event raised when you submit the form contained in the movieForm.html template: // Declare client Movies collection Movies = new Meteor.Collection("movies"); // Bind moviesTemplate to Movies collection Template.moviesTemplate.movies = function () { return Movies.find(); }; // Handle movieForm events Template.movieForm.events = { 'submit': function (e, tmpl) { // Don't postback e.preventDefault(); // create the new movie var newMovie = { title: tmpl.find("#title").value, director: tmpl.find("#director").value }; // add the movie to the db Movies.insert(newMovie); } }; The Template.movieForm.events property contains an event map which maps event names to handlers. In this case, I am mapping the form submit event to an anonymous function which handles the event. In the event handler, I am first preventing a postback by calling e.preventDefault(). This is a single page app, no postbacks are allowed! Next, I am grabbing the new movie from the HTML form. I’m taking advantage of the template find() method to retrieve the form field values. Finally, I am calling Movies.insert() to insert the new movie into the Movies collection. Here, I am explicitly inserting the new movie into the client-side Movies collection. Meteor inserts the new movie into the server-side Movies collection behind the scenes. When Meteor inserts the movie into the server-side collection, the new movie is added to the MongoDB database associated with the Movies app automatically. If server-side insertion fails for whatever reasons – for example, your internet connection is lost – then Meteor will remove the movie from the client-side Movies collection automatically. In other words, Meteor takes care of keeping the client Movies collection and the server Movies collection in sync. If you open multiple browsers, and add movies, then you should notice that all of the movies appear on all of the open browser automatically. You don’t need to refresh individual browsers to update the client-side Movies collection. Meteor keeps everything synchronized between the browsers and server for you. Removing the Insecure Module To make it easier to develop and debug a new Meteor app, by default, you can modify the database directly from the client. For example, you can delete all of the data in the database by opening up your browser console window and executing multiple Movies.remove() commands. Obviously, enabling anyone to modify your database from the browser is not a good idea in a production application. Before you make a Meteor app public, you should first run the meteor remove insecure command from a command/terminal window: Running meteor remove insecure removes the insecure package from the Movie app. Unfortunately, it also breaks our Movie app. We’ll get an “Access denied” error in our browser console whenever we try to insert a new movie. No worries. I’ll fix this issue in the next section. Creating Meteor Methods By taking advantage of Meteor Methods, you can create methods which can be invoked on both the client and the server. By taking advantage of Meteor Methods you can: 1. Perform form validation on both the client and the server. For example, even if an evil hacker bypasses your client code, you can still prevent the hacker from submitting an invalid value for a form field by enforcing validation on the server. 2. Simulate database operations on the client but actually perform the operations on the server. Let me show you how we can modify our Movie app so it uses Meteor Methods to insert a new movie. First, we need to create a new file named common\methods.js which contains the definition of our Meteor Methods: Meteor.methods({ addMovie: function (newMovie) { // Perform form validation if (newMovie.title == "") { throw new Meteor.Error(413, "Missing title!"); } if (newMovie.director == "") { throw new Meteor.Error(413, "Missing director!"); } // Insert movie (simulate on client, do it on server) return Movies.insert(newMovie); } }); The addMovie() method is called from both the client and the server. This method does two things. First, it performs some basic validation. If you don’t enter a title or you don’t enter a director then an error is thrown. Second, the addMovie() method inserts the new movie into the Movies collection. When called on the client, inserting the new movie into the Movies collection just updates the collection. When called on the server, inserting the new movie into the Movies collection causes the database (MongoDB) to be updated with the new movie. You must add the common\methods.js file to the common folder so it will get executed on both the client and the server. Our folder structure now looks like this: We actually call the addMovie() method within our client code in the client\movies.js file. Here’s what the updated file looks like: // Declare client Movies collection Movies = new Meteor.Collection("movies"); // Bind moviesTemplate to Movies collection Template.moviesTemplate.movies = function () { return Movies.find(); }; // Handle movieForm events Template.movieForm.events = { 'submit': function (e, tmpl) { // Don't postback e.preventDefault(); // create the new movie var newMovie = { title: tmpl.find("#title").value, director: tmpl.find("#director").value }; // add the movie to the db Meteor.call( "addMovie", newMovie, function (err, result) { if (err) { alert("Could not add movie " + err.reason); } } ); } }; The addMovie() method is called – on both the client and the server – by calling the Meteor.call() method. This method accepts the following parameters: · The string name of the method to call. · The data to pass to the method (You can actually pass multiple params for the data if you like). · A callback function to invoke after the method completes. In the JavaScript code above, the addMovie() method is called with the new movie retrieved from the HTML form. The callback checks for an error. If there is an error then the error reason is displayed in an alert (please don’t use alerts for validation errors in a production app because they are ugly!). Summary The goal of this blog post was to provide you with a brief walk through of a simple Meteor app. I showed you how you can create a simple Movie Database app which enables you to display a list of movies and create new movies. I also explained why it is important to remove the Meteor insecure package from a production app. I showed you how to use Meteor Methods to insert data into the database instead of doing it directly from the client. I’m very impressed with the Meteor framework. The support for Live HTML and Latency Compensation are required features for many real world Single Page Apps but implementing these features by hand is not easy. Meteor makes it easy.

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• How do you find local fellow programmers?

  - by Pepijn

  I'm a self-tought programmer living in a small town. Except for the occasional meetups at the other end of the country, I rarely talk face-to-face with other programmers. I'm well aware of the merits of pair programming, feedback, discussion with other programmers and all... What do you do to get in contact with other local programmers? p.s. If you live near Loenen (gld), Netherlands, I'd like to have contact ;)

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• XAML2CPP 1.0.2.0

  - by Valter Minute

  A new updated release of everybody favourite XAML to CPP conversion tool (at least because it’s the only one available!). New features: - support for resource dictionaries (app.xaml if you use Blend to generate your XAML) Bugfixes: - the parameters for the mouseleftbuttondown and up events were incorrect As usual you can download the new release here: http://cid-9b7b0aefe3514dc5.skydrive.live.com/self.aspx/.Public/XAML2CPP.zip Technorati Tags: XAML,Silverlight for Windows Embedded

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• Dynamic Unpivot : SSIS Nugget

  - by jamiet

  A question on the SSIS forum earlier today asked: I need to dynamically unpivot some set of columns in my source file. Every month there is one new column and its set of Values. I want to unpivot it without editing my SSIS packages that is deployed Let’s be clear about what we mean by Unpivot. It is a normalisation technique that basically converts columns into rows. By way of example it converts something like this: AccountCode Jan Feb Mar AC1 100.00 150.00 125.00 AC2 45.00 75.50 90.00 into something like this: AccountCode Month Amount AC1 Jan 100.00 AC1 Feb 150.00 AC1 Mar 125.00 AC2 Jan 45.00 AC2 Feb 75.50 AC2 Mar 90.00 The Unpivot transformation in SSIS is perfectly capable of carrying out the operation defined in this example however in the case outlined in the aforementioned forum thread the problem was a little bit different. I interpreted it to mean that the number of columns could change and in that scenario the Unpivot transformation (and indeed the SSIS dataflow in general) is rendered useless because it expects that the number of columns will not change from what is specified at design-time. There is a workaround however. Assuming all of the columns that CAN exist will appear at the end of the rows, we can (1) import all of the columns in the file as just a single column, (2) use a script component to loop over all the values in that “column” and (3) output each one as a column all of its own. Let’s go over that in a bit more detail.   I’ve prepared a data file that shows some data that we want to unpivot which shows some customers and their mythical shopping lists (it has column names in the first row): We use a Flat File Connection Manager to specify the format of our data file to SSIS: and a Flat File Source Adapter to put it into the dataflow (no need a for a screenshot of that one – its very basic). Notice that the values that we want to unpivot all exist in a column called [Groceries]. Now onto the script component where the real work goes on, although the code is pretty simple: Here I show a screenshot of this executing along with some data viewers. As you can see we have successfully pulled out all of the values into a row all of their own thus accomplishing the Dynamic Unpivot that the forum poster was after. If you want to run the demo for yourself then I have uploaded the demo package and source file up to my SkyDrive: http://cid-550f681dad532637.skydrive.live.com/self.aspx/Public/BlogShare/20100529/Dynamic%20Unpivot.zip Simply extract the two files into a folder, make sure the Connection Manager is pointing to the file, and execute! Hope this is useful. @Jamiet Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!

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• Slides and Code from my Silverlight MVVM Talk at DevConnections

  - by dwahlin

  I had a great time at the DevConnections conference in Las Vegas this year where Visual Studio 2010 and Silverlight 4 were launched. While at the conference I had the opportunity to give a full-day Silverlight workshop as well as 4 different talks and met a lot of people developing applications in Silverlight. I also had a chance to appear on a live broadcast of Channel 9 with John Papa, Ward Bell and Shawn Wildermuth, record a video with Rick Strahl covering jQuery versus Silverlight and record a few podcasts on Silverlight and ASP.NET MVC 2.  It was a really busy 4 days but I had a lot of fun chatting with people and hearing about different business problems they were solving with ASP.NET and/or Silverlight. Thanks to everyone who attended my sessions and took the time to ask questions and stop by to talk one-on-one. One of the talks I gave covered the Model-View-ViewModel pattern and how it can be used to build architecturally sound applications. Topics covered in the talk included: Understanding the MVVM pattern Benefits of the MVVM pattern Creating a ViewModel class Implementing INotifyPropertyChanged in a ViewModelBase class Binding a ViewModel declaratively in XAML Binding a ViewModel with code ICommand and ButtonBase commanding support in Silverlight 4 Using InvokeCommandBehavior to handle additional commanding needs Working with ViewModels and Sample Data in Blend Messaging support with EventBus classes, EventAggregator and Messenger My personal take on code in a code-beside file (I’m all in favor of it when used appropriately for message boxes, child windows, animations, etc.) One of the samples I showed in the talk was intended to teach all of the concepts mentioned above while keeping things as simple as possible.  The sample demonstrates quite a few things you can do with Silverlight and the MVVM pattern so check it out and feel free to leave feedback about things you like, things you’d do differently or anything else. MVVM is simply a pattern, not a way of life so there are many different ways to implement it. If you’re new to the subject of MVVM check out the following resources. I wish this talk would’ve been recorded (especially since my live and canned demos all worked :-)) but these resources will help get you going quickly. Getting Started with the MVVM Pattern in Silverlight Applications Model-View-ViewModel (MVVM) Explained Laurent Bugnion’s Excellent Talk at MIX10     Download sample code and slides from my DevConnections talk     For more information about onsite, online and video training, mentoring and consulting solutions for .NET, SharePoint or Silverlight please visit http://www.thewahlingroup.com.

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• Integrating Data Mining into your BI Solution (Presentation)

  I recently gave a live meeting presentation to the UK User Group on Integrating Data Mining into your BI Solution.  In it I talk about and demo ways of using your data mining models inside Integration Services, Analysis Services and Reporting Services.  This is the first in a series of presentations I will be doing for the UG as I try to get the word out that Data Mining can be for the masses. You can download my deck and my line meeting recording from here.

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• dasBlog

  - by Daniel Moth

  Some people like blogging on a site that is completely managed by someone else (e.g. http://wordpress.com/) and others, like me, prefer hosting their own blog at their own domain. In the latter case you need to decide what blog engine to install on your web space to power your blog. There are many free blog engines to choose from (e.g. the one from http://wordpress.org/). If, like me, you want to use a blog engine that is based on the .NET platform you have many choices including BlogEngine.NET, Subtext and the one I picked: dasBlog. In this post I'll describe the steps I took to get going with the open source dasBlog (home page, source page). A. Installing First I installed dasBlog on my local Windows 7 machine where I have IIS7 installed. To install dasBlog, I started by clicking the "Install" button on its web gallery page. After that I went through configuration, theming and adding content as described below. Once I was happy that everything was working correctly on the local machine, I set this up on a hosting service. I went for a Windows IIS7 shared hosting 3 month Economy plan from GoDaddy. The dasBlog site lists a bunch of other hosts. You can read the installation instructions for dasBlog, and with GoDaddy I just had to click one button since it is available as part of their quick-install apps. With GoDaddy I had a previewdns option that allowed me to play around and preview my site before going live. B. Configuring After it was installed (on local machine and/or hosting provider), I followed the obvious steps to create an admin user and logged in. This displays an admin navigation bar with the following options: 1. Navigator Links: I decided I was not going to use this feature. I manage links on the side of my blog manually elsewhere as part of the theme. So, I deleted every entry on this page and ignored it thereafter. 2. Blogroll: Ditto - same comment as for Navigator Links. 3. Content Filters: I did not delete (or add) these, but I did ensure both checkboxes are not checked. I.e. I am not using this feature now, but I may return to it in the future. 4. Activity: This is a read-only view of various statistics. So nothing to configure here, but useful to come back to for complementary statistics to whatever other statistical package you use (e.g. free stats as part of the hosting and I also use feedburner for syndication stats). 5. Cross-posting: I did not need that, so I turned it off via the Configuration Settings discussed next. 6. Configuration Settings: This is where the bulk of the configuration for the blog takes place and they are stored in a single XML file: Site.Config file. There are truly self-explanatory options to pick for Basic Settings, Services Settings and Services to Ping, Syndication Settings (this is where you link to your feedburner name if you have one) and Mail to Weblog Settings (I keep this turned off). There are also "Xml Storage System Settings" (I keep this turned off), "OpenId Settings" (I allow OpenID commenters), "Spammer Settings" (Enable captcha, never show email addresses) and "Comment settings" (Enable comments, don't allow on older posts, don't allow html). There are also Appearance Settings (I checked the "Use Post Title for Permalink", replaced spaces with hyphen and unchecked the "Use Unique Title"). Finally, there are also Notification Settings, but they are a bit of hit and miss in my case, in that I don’t always get the emails (still investigating this). C. Adding Content You can add content via the "Add Entry" link on the admin navigation bar or by configuring the "Mail to Weblog" settings and sending email or, do what I've started doing, use Live Writer (also the team has a blog). Another way to add content is programmatically if, for example, you are migrating content from another blog (and I'll cover that in separate post sharing the code). What you should know is that all blog content (posts and comments) live in XML files in a folder called "content" under your dasBlog installation. D. Theming There is a very good guide about themes for dasBlog, there is also a similar guide with screenshots (scroll down to "So how do I create a theme") and the dasBlog macro reference. When you install dasBlog, there are many themes available; each theme is in its own folder (representing the folder name) under the themes folder. You may have noticed that you can switch between these via the "Appearance Settings" described above (look for the combobox after the Default Theme label). I created my own theme by copy-pasting an existing theme folder, renaming it and then switching to it as the default. I then opened the folder in Visual Studio and hacked around the HTML in the 3 files (itemTemplate, homeTemplate and dayTemplate). These files have a blogtemplate file extension, which I temporarily renamed to HTML as I was editing them. There is no more advice I can offer here as this is a matter of taste and the aforementioned links is all I used. Personally, I had salvaged the CSS (and structure) from my previous blog and wanted to make this one match it as closely as possible - I think I have succeeded. E. If you run into any issue with dasBlog... ...use your favorite search engine to find answers. Many bloggers have been using this engine for a while and have documented issues and workarounds over time. One such example is ScottHa's dasBlog category; another example is therightstuff where I "borrowed" the idea/macro for the outlook-style on-page navigation. If you don't find what you want through searching, try posting a question to the forums. Comments about this post welcome at the original blog.

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• Lancement de la plateforme Microsoft Online Services : testez-la et venez en discuter avec Microsoft

  [IMG]http://www.lgmorand.com/blog/image.axd?picture=2010%2f3%2fhome_header-bg+-+Copie.jpg[/IMG] Après le lancement de sa plateforme Azure en début d'année, Microsoft a lancé début mars sa nouvelle plateforme MOS, pour Microsoft Office Services, une plateforme d'outils de communication externalisés mais restants au service de l'entreprise. Il s'agit un service destiné aux professionnels uniquement qui permet de confier certaines fonctions à Microsoft : messagerie collaborative (Exchange), travail collaboratif (Sharepoint), communications temps réel (Office Communications, Live Meeting, Communicator) et bureautique (Office).

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• Understanding SARGability (to make your queries run faster)

  - by simonsabin

  Rob Farley is doing a live meeting this month on understanding what SARGable means. It is at 1pm BST and so if you are in the UK will be a very useful hour spent. for more details go to http://www.sqlpass.org/Events/ctl/ViewEvent/mid/521.aspx?ID=341 The description of the session  is Understanding SARGability (to make your queries run faster) SARGable means Search ARGument able. It relates to the ability to search through an index for a value, but unfortunately, many database professionals don...(read more)

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• Learn about MySQL with the Authentic MySQL for Beginners course

  - by Antoinette O'Sullivan

  Learn about the MySQL Server and other MySQL products by taking the authentic MySQL for Beginners course. This course covers all the basics from MySQL download and installation, to relational database concepts and database design. This course is your first step to becoming a MySQL administrator. You can take this course through one of the following delivery types: Training-on-Demand: Start the class from your desk, at your base and within 24 hrs of registering. Read Ben Krug on Day 3 of his experience taking the MySQL for Beginners course Training-on-Demand option. Live-Virtual Class: Attend this live class from your own office - no travel required. Choose from a selection of events on the schedule to suit different timezones. Delivery languages include English and German. In-Class event: Attend this class in an education center. Events already on the schedule include:  Location  Date  Delivery Language  Mechelen, Belgium  14 January 2013  English  London, England  5 March 2013  English  Hamburg, Germany  25 March 2013  German  Munich, Germany  3 June 2013  German  Budapest, Hungary  5 February 2013  Hungary  Milan, Italy  11 February 2013  Italian  Rome, Italy  4 March 2013  Italian  Riga, Latvia  18 February 2013  Latvian  Amsterdam, Netherlands  21 May 2013  Dutch  Nieuwegein, Netherlands  18 February 2013  Dutch  Warsaw, Poland  18 February 2013  Polish  Lisbon, Portugal  25 March 2013  European Portugese  Porto, Portugal  25 March 2013  European Portugese  Barcelona, Spain  11 February 2013  Spanish  Madrid, Spain  22 April 2013  Spanish  Nairobi, Kenya  14 January 2013  English  Capetown, South Africa  22 July 2013  English  Pretoria, South Africa  22 April 2013  English  Petaling Jaya, Malaysia  28 January 2013  English  Ottawa, Canada  25 March 2013  English  Toronto, Canada  25 March 2013  English  Montreal, Canada 25 March 2013   English Mexico City, Mexico  14 January 2013   Spanish  San Pedro Garza Garcia, Mexico  5 February 2013  Spanish  Sao Paolo, Brazil  29 January 2013  Brazilian Portugese For more information on this or other courses on the authentic MySQL Curriculum, go to http://oracle.com/education/mysql. Note, many organizations deploy both Oracle Database and MySQL side by side to serve different needs, and as a database professional you can find training courses on both topics at Oracle University! Check out the upcoming Oracle Database training courses and MySQL training courses. Even if you're only managing Oracle Databases at this point of time, getting familiar with MySQL will broaden your career path with growing job demand.

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• Transactions in LINQ to SQL applications

  - by nikolaosk

  In this post I would like to talk about LINQ to SQL and transactions.When I have a LINQ to SQL class I always get asked this question, "How does LINQ treat Transactions?". When we use the DeleteOnSubmit() method or the InsertOnSubmit() method, all of those commands at some point are translated into T-SQL commands and then are executed against the database. All of those commands live in transactions and they follow the basic rules of transaction processing. They do succeed together or fail together...(read more)

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• Upcoming Webcast on June 17: Gain Control Over Your Financial Close

  - by Theresa Hickman

  Accenture and Oracle EPM (Enterprise Perfromance Management) and GRC (Governance, Risk, and Compliance) will be hosting a live webcast called "Gain Control Over Your Financial Close - Confidence in the Process, Trust in the Numbers." When: Thursday, June 17, 2010 Time: 9:00am PST (Noon EST) Don't miss this chance to find out how you could optimize the financial close process and transform the speed, quality and integrity of your financial reporting. For more information and to register for this event, see this webpage.

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• Silverlight Cream for March 08, 2010 -- #809

  - by Dave Campbell

  In this Issue: Michael Washington, Tim Greenfield, Bobby Diaz(-2-), Glenn Block(-2-), Nikhil Kothari, Jianqiang Bao(-2-), and Christopher Bennage. Shoutouts: Adam Kinney announced a Big update for the Project Rosetta site today Arpit Gupta has opened a new blog with a great logo: I think therefore I am dangerous :) From SilverlightCream.com: DotNetNuke Silverlight Traffic Module If it's DNN and Silverlight, it has to be my buddy Michael Washington :) ... Michael has combined those stunning gauges you've seen with website traffic... just too cool!... grab the code and display yours too! Cool demonstration of Silverlight VideoBrush This is a no-code post by Tim Greenfield, but I like the UX on this Jigsaw Puzzle page... and you can make your own. Introducing the Earthquake Locator – A Bing Maps Silverlight Application, part 1 Bobby Diaz has an informative post up on combining earthquake data with BingMaps in Silverlight 3... check it out, the grab the recently posted Live Demo and Source Code Adding Volcanos and Options - Earthquake Locator, part 2 Bobby Diaz also added volcanic activity to his earthquake BinMaps app, and updated the downloadable code and live demo. Building Hello MEF – Part IV – DeploymentCatalog Glenn Block posted a pair of MEF posts yesterday... made me think I missed one :) .. the first one is about the DeploymentCatalog. Note he is going to be using the CodePlex bits in his posts. Building HelloMEF – Part V – Refactoring to ViewModel Glenn Block's part V is about MEF and MVVM -- no, really! ... he is refactoring MVVM into the app with a nod to Josh Smith and Laurent Bugnion... get your head around this... The Case for ViewModel Nikhil Kothari has a post up about the ViewModel, and how it facilitates designer/developer workflow, jumpstarts development, improves scaling, and makes asynch programming development simpler MMORPG programming in Silverlight Tutorial (12)Map Instance (Part I) Jianqiang Bao has part 12 of his MMORPG game up... this one is showing how to deal with obstuctions on maps. MMORPG programming in Silverlight Tutorial (13)Perfect moving mechanism Jianqiang Bao also has part 13 up, and this second one is about sprite movement around the obstructions. 1 Simple Step for Commanding in Silverlight Christopher Bennage blogged about Commanding in Silverlight, he begins with a blog post about commands in Silverlight 4 then goes on to demonstrate the Caliburn way of doing commanding. Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    MIX10

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• links for 2010-04-28

  - by Bob Rhubart

  Guido Schmutz: Oracle BPM11g available! Oracle ACE Director Guido Schmutz shares his impressions after attending a hands-on workshop conducted by Masons of SOA member Clemens Utschig-Utschig. (tags: oracle otn oracleace bpm soa soasuite) Elena Zannoni : 2010 Collaboration Summit Impressions Elena Zannoni has collected her thoughts on #C10 and shares them in this great blog post. (tags: oracle otn linux architecture collaborate2010) Hajo Normann: BPMN 2.0 in Oracle BPM Suite: The future of BPM starts now "The BPM Studio sets itself apart from pure play BPMN 2.0 tools by being seamlessly integrated inside a holistic SOA / BPM toolset: BPMN models are placed in SCA-Composites in SOA Suite 11g. This allows to abstract away the complexities of SOA integration aspects from business process aspects. For UIs in BPMN tasks, you have the richness of ADF 11g based Frontends." -- Oracle ACE Director and Masons of SOA member Hajo Normann (tags: oracle otn oracleace bpm soa sca) Brain Dirking: AIIM Best Practice Awards to Two Oracle Customers Brian Dirking's great write-up of the AIIM Awards Banquet, at which the Bureau of Indian Affairs and the Charles Town Police Department were among the winners of the 2010 Carl E. Nelson Best Practices Awards. (tags: oracle otn aiim bpm ecm enterprise2.0) Mark Wilcox: Upcoming Directory Services Live Webcast - Improve Time-to-Market and Reduce Cost with Oracle Directory Services Live Webcast: Improve Time-to-Market and Reduce Cost with Oracle Directory Services Event Date: Thursday, May 27, 2010 Event Time: 10:00 AM Pacific Standard Time / 1:00 Eastern Standard Time (tags: oracle otn webcast security identitymanagement) Celine Beck: Introducing AutoVue Document Print Service Celine Beck offers a detailed overview of Oracle AutoVue. (tags: oracle otn enatarch visualization printing) Vikas Jain: What's new in OWSM 11gR1 PS2 (11.1.1.3.0) ? Vikas Jain shares links to resources relevant to the recently releases patch set for Oracle Web Services Manager 11gR1. (tags: oracle otn soa webservices oswm) @theovanarem: Oracle SOA Suite 11g Release 1 Patch Set 2 Theo Van Arem shares links to several resources relevant to the release of the latest patch set for Oracle SOA Suite 11g. (tags: oracle otn soa soasuite middleware) @vambenepe: Analyzing the VMforce announcement "The new thing is that force.com now supports an additional runtime, in addition to Apex. That new runtime uses the Java language, with the constraint that it is used via the Spring framework. Which is familiar territory to many developers. That’s it." -- William Vambenepe (tags: oracle otn cloud paas)

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• UPK Customer Success Story: The City and County of San Francisco

  - by karen.rihs(at)oracle.com

  The value of UPK during an upgrade is a hot topic and was a primary focus during our latest customer roundtable featuring The City and County of San Francisco: Leveraging UPK to Accelerate Your PeopleSoft Upgrade. As the Change Management Analyst for their PeopleSoft 9.0 HCM project (Project eMerge), Jan Crosbie-Taylor provided a unique perspective on how they're utilizing UPK and UPK pre-built content early on to successfully manage change for thousands of city and county employees and retirees as they move to this new release. With the first phase of the project going live next September, it's important to the City and County of San Francisco to 1) ensure that the various constituents are brought along with the project team, and 2) focus on the end user aspects of the implementation, including training. Here are some highlights on how UPK and UPK pre-built content are helping them accomplish this: As a former documentation manager, Jan really appreciates the power of UPK as a single source content creation tool. It saves them time by streamlining the documentation creation process, enabling them to record content once, then repurpose it multiple times. With regard to change management, UPK has enabled them to educate the project team and gain critical buy in and support by familiarizing users with the application early on through User Experience Workshops and by promoting UPK at meetings whenever possible. UPK has helped create awareness for the project, making the project real to users. They are taking advantage of UPK pre-built content to: Educate the project team and subject matter experts on how PeopleSoft 9.0 works as delivered Create a guide/storyboard for their own recording Save time/effort and create consistency by enhancing their recorded content with text and conceptual information from the pre-built content Create PeopleSoft Help for their development databases by publishing and integrating the UPK pre-built content into the application help menu Look ahead to the next release of PeopleTools, comparing the differences to help the team evaluate which version to use with their implemtentation When it comes time for training, they will be utilizing UPK in the classroom, eliminating the time and cost of maintaining training databases. Instructors will be able to carry all training content on a thumb drive, allowing them to easily provide consistent training at their many locations, regardless of the environment. Post go-live, they will deploy the same UPK content to provide just-in-time, in-application support for the entire system via the PeopleSoft Help menu and their PeopleSoft Enterprise Portal. Users will already be comfortable with UPK as a source of help, having been exposed to it during classroom training. They are also using UPK for a non-Oracle application called JobAps, an online job application solution used by many government organizations. Jan found UPK's object recognition to be excellent, yet it's been incredibly easy for her to change text or a field name if needed. Please take time to listen to this recording. The City and County of San Francisco's UPK story is very exciting, and Jan shared so many great examples of how they're taking advantage of UPK and UPK pre-built content early on in their project. We hope others will be able to incorporate these into their projects. Many thanks to Jan for taking the time to share her experiences and creative uses of UPK with us! - Karen Rihs, Oracle UPK Outbound Product Management

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• Silverlight User Group of Switzerland (SLUGS)

  - by Laurent Bugnion

  Last Thursday, the Silverlight Firestarter event took place in Redmond, and was streamed live to a large audience worldwide (around 20’000 people). Approximately 30 if them were in Wallisellen near Zurich, in Microsoft Switzerland’s offices. This was not only a great occasion to learn more about the future of Silverlight and to see great demos, but also it was the very first meeting of the Silverlight User Group of Switzerland (SLUGS). Having 30 people for a first meeting was a great success, especially if we consider that it was REALLY cold that night, that it had snowed 20 cm the night before! We all had a good time, and 3 lucky winners went back home with a prize: One LG Optimus 7 Windows Phone and two copies of Silverlight 4 Unleashed. Congratulations to the winners! After the keynote (which went in a whirlwind, shortest 90 minutes ever!), we all had pizza and beverages generously sponsored by the Swiss DPE team, of which not less than 5 guys came to the event! Thanks to Stefano, Ronnie, Sascha, Big Mike and Ken for attending! We decided to have meetings every month. Stay tuned for announcements on when and where the events will take place. We are also in the process of creating various groups online where the attendees can find more information. For instance, I created a group on Flickr where the pictures taken at events will be published. The group is public, and the pictures of the first event are already online! We also have the already known page at http://www.slugs.ch/, check it out. A national group Even though the first event was in Zurich, and that 3 of the founding members live nearby, we would like to try and be a national group. That means having events sometimes in other parts of Switzerland, collaborating with other local user groups, etc. Stay tuned for more Join! We want you, we need you If you are doing Silverlight, for a living or as a hobby, if you are interested in user experience, XAML, Expression Blend and many more topics, you should consider joining! This is a great occasion to exchange experiences, to learn from Silverlight experts, to hear sessions about various topics related to Silverlight, etc. If you want to talk about a topic that is of interest to you, If you want to propose a topic of discussion Or if you just want to hang out then go to http://www.slugs.ch and register! Cheers, Laurent   Laurent Bugnion (GalaSoft) Subscribe | Twitter | Facebook | Flickr | LinkedIn

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• Microsoft TechEd 2010 - Day 3 @ Bangalore

  - by sathya

  Microsoft TechEd 2010 - Day 3 @ Bangalore Sorry for my delayed post on day 3 because I had to travel from Blore to Chennai So I couldnt write for the past two days. On day 3 as usual we had lot of simultaneous tracks on various sessions. This day I choose the Your Data, Our Platform Track. It had sessions on the following 5 topics :   Developing Data-tier Applications in Visual Studio 2010 - by Sanjay Nagamangalam SQL Server Query Optimization, Execution and Debugging Query Performance - by Vinod Kumar M SQL Server Utility - Its about more than 1 SQL Server - by Vinod Kumar Jagannathan Data Recovery / Consistency with CheckDB - by Vinod Kumar M Developing with SQL Server Spatial and Deep dive into Spatial Indexing - by Pinal Dave Developing Data-tier Applications in Visual Studio 2010 - by Sanjay Nagamangalam This was one of the superb sessions i have attended. He explained all the concepts in detail with a demo. The important thing in this is there is something called Data-Tier application project which is newly introduced in this VS2010 with which we can manage all our data along with our application inside our VS itself. We can create DB,Tables,Procs,Views etc. here itself and once we deploy it creates a compressed file called .dacpac which stores all the changes in Table Schema,Created procs, etc. on to that single file which reduces our (developer's) effort in preparing the deployment scripts and giving it to the DBA. It also has some policy configurations which can be managed easily by checking some rules like in outlook. For Ex : IF the SQL Server Version > 10 then deploy else dont. This rule specifies that even if we try to deploy on SQL Server DB with version less than 10 It will not do it. And if we deploy some .dacpac to SQL server production db with the option upgrade DB with this dacpac once everything completes successfully it will say success else it rollsback to the prior version. Even if it gets deployed successfully and later @ a point of time you wish to revert it back to the prior version, you can go ahead and delete the existing dacpac version so that it reverts to the older version of the db changes. And for the good questions that were asked in the session T-Shirts were given. SQL Server Query Optimization, Execution and Debugging Query Performance - by Vinod Kumar M This one too was the best session. The speaker Vinod explained everything very much clearly. This was really useful session and you dont believe, as per my knowledge, in the total 3 days in the TechEd except the Keynote, for this session seats were full (House FULL)  People were even standing out to attend this session. Such a great one it was. The speaker did a deep dive in to the Query Plan section and showed which actually causes the problem. Its all about the thing that we need to understand about the execution of SQL server Queries. We think in a way and SQL Server never executes in that way. We need to understand that first. He also told about there might be two plans generated for a single query at a point of time because of parallel processors in the system. The Key is here in every query. There is something called Estimated Row Count and Actual Row Count in the query plan. If the estimated row count by SQL server tallies with the actual row count your performance will be awesome. He said some tweaks to achieve the same. After this as usual we had lunch SQL Server Utility - Its about more than 1 SQL Server - by Vinod Kumar Jagannathan This was more of a DBA's session. Am really sorry I was totally blank and I was not interested to attend this session and walked out to attend Migrating to the cloud by Harish Ranganathan (My favorite Speaker) but unfortunately that was some other persons session. There the speaker was telling about how to configure the connection strings in such a way that we can connect to the SQL Azure platform from our VS and also showed us how to deploy the same in to Windows Azure. In between there were lot of technical problems like laptop hang, user locked and he was switching between systems, also i came in the half so i wasnt able to listen that fully. In between, Since I got an MCTS certification they gave me T-Shirt with the lines 'Iam Certified. Are you?' and they asked me to wear that. If we wear that we might get spotted and they would give us some goodies  So on the 3rd day I was wearing that T-Shirt. I got spotted by the person Tarun who was coordinating things about the certification, and he was accompanied with a cameraman and they interviewed me about the certification and I was shown live in the Teched and was seen by 60000 live viewers of the TechEd. I was really happy on that. Data Recovery / Consistency with CheckDB - by Vinod Kumar M This was one of the best sessions too in the TechEd. This guy is really amazing. In front of us he crashed a DB and showed how to recover the same in 6 different ways for different no of failures. Showed about Different types of error msgs like : 823,824,825 msdb..suspect_pages DBCC CheckDB (different parameters to it) I am really waiting for his session to get uploaded live in the Teched Website. Here is his contact info If you wish to connect to him : Twitter : @vinodk_sql Website : www.ExtremeExperts.com Blog : http://blogs.sqlxml.org/vinodkumar Developing with SQL Server Spatial and Deep dive into Spatial Indexing - by Pinal Dave Pinal Dave is a King in SQL and he is a SQL MVP and he is the owner of SQLAuthority.com He took the session on Spatial Databases from the start. Showed about the different types of Spatial : Geometric and Geographic Geometric : x and y axis its a planar surface Geographic : Spherical surface with 3600  as the maximum which is used to represent the geographic points on the earth and easy to draw maps of different kinds. He had a lot of obstacles during his session like rain coming inside the hall, mic wires got bursted due to rain, Videos off on the display screens. In spite of that he asked the audience to come in the front rows and managed to take a good session without ppts and finally we got the displays on and he was showing demos on the same what he explained orally. That was really a fun filled informative session. He gave some books for the persons who asked good questions and answered well for his questions and I got one too  (It was a book on Data Mining - Wrox Publishers) And finally after all these things there was Keynote session for close of the TechEd. and we all assembled in a big hall where Mr.Ashok Soota, a man of age around 70  co-founder of Mindtree was called to give some lecture on his successes. He was explaining about his past and what all companies he switched and for what reasons and what are all his successes and what are all his failures and the learnings of him from his past failures. and his success and failures on his partnerships with the other concern. And there were some questions for him like What is your suggestion on young entrepreneur? How did you learn from past failures? What is reiterating your success? What is your suggestion on partnerships? How to choose partnerships? etc. And they said @ 7.30 Pm there would be a party night, but unfortunately i was not able to attend that because I had to catch my train and before that i had to pack things, so I started @ 7 itself. Thats it about the TechED!!! Stay tuned for further Technology updates.

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