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  • Master Note for Generic Data Warehousing

    - by lajos.varady(at)oracle.com
    ++++++++++++++++++++++++++++++++++++++++++++++++++++ The complete and the most recent version of this article can be viewed from My Oracle Support Knowledge Section. Master Note for Generic Data Warehousing [ID 1269175.1] ++++++++++++++++++++++++++++++++++++++++++++++++++++In this Document   Purpose   Master Note for Generic Data Warehousing      Components covered      Oracle Database Data Warehousing specific documents for recent versions      Technology Network Product Homes      Master Notes available in My Oracle Support      White Papers      Technical Presentations Platforms: 1-914CU; This document is being delivered to you via Oracle Support's Rapid Visibility (RaV) process and therefore has not been subject to an independent technical review. Applies to: Oracle Server - Enterprise Edition - Version: 9.2.0.1 to 11.2.0.2 - Release: 9.2 to 11.2Information in this document applies to any platform. Purpose Provide navigation path Master Note for Generic Data Warehousing Components covered Read Only Materialized ViewsQuery RewriteDatabase Object PartitioningParallel Execution and Parallel QueryDatabase CompressionTransportable TablespacesOracle Online Analytical Processing (OLAP)Oracle Data MiningOracle Database Data Warehousing specific documents for recent versions 11g Release 2 (11.2)11g Release 1 (11.1)10g Release 2 (10.2)10g Release 1 (10.1)9i Release 2 (9.2)9i Release 1 (9.0)Technology Network Product HomesOracle Partitioning Advanced CompressionOracle Data MiningOracle OLAPMaster Notes available in My Oracle SupportThese technical articles have been written by Oracle Support Engineers to provide proactive and top level information and knowledge about the components of thedatabase we handle under the "Database Datawarehousing".Note 1166564.1 Master Note: Transportable Tablespaces (TTS) -- Common Questions and IssuesNote 1087507.1 Master Note for MVIEW 'ORA-' error diagnosis. For Materialized View CREATE or REFRESHNote 1102801.1 Master Note: How to Get a 10046 trace for a Parallel QueryNote 1097154.1 Master Note Parallel Execution Wait Events Note 1107593.1 Master Note for the Oracle OLAP OptionNote 1087643.1 Master Note for Oracle Data MiningNote 1215173.1 Master Note for Query RewriteNote 1223705.1 Master Note for OLTP Compression Note 1269175.1 Master Note for Generic Data WarehousingWhite Papers Transportable Tablespaces white papers Database Upgrade Using Transportable Tablespaces:Oracle Database 11g Release 1 (February 2009) Platform Migration Using Transportable Database Oracle Database 11g and 10g Release 2 (August 2008) Database Upgrade using Transportable Tablespaces: Oracle Database 10g Release 2 (April 2007) Platform Migration using Transportable Tablespaces: Oracle Database 10g Release 2 (April 2007)Parallel Execution and Parallel Query white papers Best Practices for Workload Management of a Data Warehouse on the Sun Oracle Database Machine (June 2010) Effective resource utilization by In-Memory Parallel Execution in Oracle Real Application Clusters 11g Release 2 (Feb 2010) Parallel Execution Fundamentals in Oracle Database 11g Release 2 (November 2009) Parallel Execution with Oracle Database 10g Release 2 (June 2005)Oracle Data Mining white paper Oracle Data Mining 11g Release 2 (March 2010)Partitioning white papers Partitioning with Oracle Database 11g Release 2 (September 2009) Partitioning in Oracle Database 11g (June 2007)Materialized Views and Query Rewrite white papers Oracle Materialized Views  and Query Rewrite (May 2005) Improving Performance using Query Rewrite in Oracle Database 10g (December 2003)Database Compression white papers Advanced Compression with Oracle Database 11g Release 2 (September 2009) Table Compression in Oracle Database 10g Release 2 (May 2005)Oracle OLAP white papers On-line Analytic Processing with Oracle Database 11g Release 2 (September 2009) Using Oracle Business Intelligence Enterprise Edition with the OLAP Option to Oracle Database 11g (July 2008)Generic white papers Enabling Pervasive BI through a Practical Data Warehouse Reference Architecture (February 2010) Optimizing and Protecting Storage with Oracle Database 11g Release 2 (November 2009) Oracle Database 11g for Data Warehousing and Business Intelligence (August 2009) Best practices for a Data Warehouse on Oracle Database 11g (September 2008)Technical PresentationsA selection of ObE - Oracle by Examples documents: Generic Using Basic Database Functionality for Data Warehousing (10g) Partitioning Manipulating Partitions in Oracle Database (11g Release 1) Using High-Speed Data Loading and Rolling Window Operations with Partitioning (11g Release 1) Using Partitioned Outer Join to Fill Gaps in Sparse Data (10g) Materialized View and Query Rewrite Using Materialized Views and Query Rewrite Capabilities (10g) Using the SQLAccess Advisor to Recommend Materialized Views and Indexes (10g) Oracle OLAP Using Microsoft Excel With Oracle 11g Cubes (how to analyze data in Oracle OLAP Cubes using Excel's native capabilities) Using Oracle OLAP 11g With Oracle BI Enterprise Edition (Creating OBIEE Metadata for OLAP 11g Cubes and querying those in BI Answers) Building OLAP 11g Cubes Querying OLAP 11g Cubes Creating Interactive APEX Reports Over OLAP 11g CubesSelection of presentations from the BIWA website:Extreme Data Warehousing With Exadata  by Hermann Baer (July 2010) (slides 2.5MB, recording 54MB)Data Mining Made Easy! Introducing Oracle Data Miner 11g Release 2 New "Work flow" GUI   by Charlie Berger (May 2010) (slides 4.8MB, recording 85MB )Best Practices for Deploying a Data Warehouse on Oracle Database 11g  by Maria Colgan (December 2009)  (slides 3MB, recording 18MB, white paper 3MB )

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  • How to test if a doctrine records has any relations that are used

    - by murze
    Hi, I'm using a doctrine table that has several optional relations (of types Doctrine_Relation_Association and Doctrine_Relation_ForeignKey) with other tables. How can I test if a record from that table has connections with records from the related table. Here is an example to make my question more clear. Assume that you have a User and a user has a many to many relation with Usergroups and a User can have one Userrole How can I test if a give user is part of any Usergroups or has a role. The solution starts I believe with $relations = Doctrine_Core::getTable('User')->getRelations(); $user = Doctrine_Core::getTable('User')->findOne(1); foreach($relations as $relation) { //here should go a test if the user has a related record for this relation if ($relation instanceof Doctrine_Relation_Association) { //here the related table probably has more then one foreign key (ex. user_id and group_id) } if ($relation instanceof Doctrine_Relation_ForeignKey) { //here the related table probably has the primary key of this table (id) as a foreign key (user_id) } } //true or false echo $result I'm looking for a general solution that will work no matter how many relations there are between user and other tables. Thanks!

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  • Idiomatic scheme and generic programming, why only on numbers ?

    - by Skeptic
    Hi, In Scheme, procedures like +, -, *, / works on different types of numbers, but we don't much see any other generic procedures. For example, length works only on list so that vector-length and string-length are needed. I guess it comes from the fact that the language doesn't really offer any mechanism for defining generic procedure (except cond of course) like "type classes" in Haskell or a standardized object system. Is there an idiomatic scheme way to handle generic procedures that I'm not aware of ?

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  • How can I traverse a reverse generic relation in a Django template?

    - by user569139
    I have the following class that I am using to bookmark items: class BookmarkedItem(models.Model): is_bookmarked = models.BooleanField(default=False) user = models.ForeignKey(User) content_type = models.ForeignKey(ContentType) object_id = models.PositiveIntegerField() content_object = generic.GenericForeignKey() And I am defining a reverse generic relationship as follows: class Link(models.Model): url = models.URLField() bookmarks = generic.GenericRelation(BookmarkedItem) In one of my views I generate a queryset of all links and add this to a context: links = Link.objects.all() context = { 'links': links } return render_to_response('links.html', context) The problem I am having is how to traverse the generic relationship in my template. For each link I want to be able to check the is_bookmarked attribute and change the add/remove bookmark button according to whether the user already has it bookmarked or not. Is this possible to do in the template? Or do I have to do some additional filtering in the view and pass another queryset?

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  • how to solve this problem

    - by Surbir
    root@me-desktop:~# sudo apt-get install aircrack-ng Reading package lists... Done Building dependency tree Reading state information... Done The following NEW packages will be installed: aircrack-ng 0 upgraded, 1 newly installed, 0 to remove and 446 not upgraded. 1 not fully installed or removed. Need to get 1,579kB of archives. After this operation, 2,843kB of additional disk space will be used. Get:1 http://archive.ubuntu.com/ubuntu/ maverick/universe aircrack-ng i386 1:1.1-1 [1,579kB] Fetched 1,579kB in 1min 9s (22.7kB/s) Selecting previously deselected package aircrack-ng. (Reading database ... 520739 files and directories currently installed.) Unpacking aircrack-ng (from .../aircrack-ng_1%3a1.1-1_i386.deb) ... Processing triggers for man-db ... Setting up linux-image-3.0.1-030001-generic (3.0.1-030001.201108060905) ... Running depmod. update-initramfs: Generating /boot/initrd.img-3.0.1-030001-generic Warning: No support for locale: en_US.utf8 Examining /etc/kernel/postinst.d. run-parts: executing /etc/kernel/postinst.d/dkms 3.0.1-030001-generic /boot/vmlinuz-3.0.1-030001-generic run-parts: executing /etc/kernel/postinst.d/initramfs-tools 3.0.1-030001-generic /boot/vmlinuz-3.0.1-030001-generic run-parts: executing /etc/kernel/postinst.d/nvidia-common 3.0.1-030001-generic /boot/vmlinuz-3.0.1-030001-generic run-parts: executing /etc/kernel/postinst.d/pm-utils 3.0.1-030001-generic /boot/vmlinuz-3.0.1-030001-generic run-parts: executing /etc/kernel/postinst.d/update-notifier 3.0.1-030001-generic /boot/vmlinuz-3.0.1-030001-generic run-parts: executing /etc/kernel/postinst.d/zz-update-grub 3.0.1-030001-generic /boot/vmlinuz-3.0.1-030001-generic exec: 15: update-grub: not found run-parts: /etc/kernel/postinst.d/zz-update-grub exited with return code 2 Failed to process /etc/kernel/postinst.d at /var/lib/dpkg/info/linux-image-3.0.1-030001-generic.postinst line 1010. dpkg: error processing linux-image-3.0.1-030001-generic (--configure): subprocess installed post-installation script returned error exit status 2 Setting up aircrack-ng (1:1.1-1) ... Errors were encountered while processing: linux-image-3.0.1-030001-generic E: Sub-process /usr/bin/dpkg returned an error code (1) root@me-desktop:~#

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  • C# 4.0: Covariance And Contravariance In Generics

    - by Paulo Morgado
    C# 4.0 (and .NET 4.0) introduced covariance and contravariance to generic interfaces and delegates. But what is this variance thing? According to Wikipedia, in multilinear algebra and tensor analysis, covariance and contravariance describe how the quantitative description of certain geometrical or physical entities changes when passing from one coordinate system to another.(*) But what does this have to do with C# or .NET? In type theory, a the type T is greater (>) than type S if S is a subtype (derives from) T, which means that there is a quantitative description for types in a type hierarchy. So, how does covariance and contravariance apply to C# (and .NET) generic types? In C# (and .NET), variance applies to generic type parameters and not to the resulting generic type. A generic type parameter is: covariant if the ordering of the generic types follows the ordering of the generic type parameters: Generic<T> = Generic<S> for T = S. contravariant if the ordering of the generic types is reversed from the ordering of the generic type parameters: Generic<T> = Generic<S> for T = S. invariant if neither of the above apply. If this definition is applied to arrays, we can see that arrays have always been covariant because this is valid code: object[] objectArray = new string[] { "string 1", "string 2" }; objectArray[0] = "string 3"; objectArray[1] = new object(); However, when we try to run this code, the second assignment will throw an ArrayTypeMismatchException. Although the compiler was fooled into thinking this was valid code because an object is being assigned to an element of an array of object, at run time, there is always a type check to guarantee that the runtime type of the definition of the elements of the array is greater or equal to the instance being assigned to the element. In the above example, because the runtime type of the array is array of string, the first assignment of array elements is valid because string = string and the second is invalid because string = object. This leads to the conclusion that, although arrays have always been covariant, they are not safely covariant – code that compiles is not guaranteed to run without errors. In C#, the way to define that a generic type parameter as covariant is using the out generic modifier: public interface IEnumerable<out T> { IEnumerator<T> GetEnumerator(); } public interface IEnumerator<out T> { T Current { get; } bool MoveNext(); } Notice the convenient use the pre-existing out keyword. Besides the benefit of not having to remember a new hypothetic covariant keyword, out is easier to remember because it defines that the generic type parameter can only appear in output positions — read-only properties and method return values. In a similar way, the way to define a type parameter as contravariant is using the in generic modifier: public interface IComparer<in T> { int Compare(T x, T y); } Once again, the use of the pre-existing in keyword makes it easier to remember that the generic type parameter can only be used in input positions — write-only properties and method non ref and non out parameters. Because covariance and contravariance apply only to the generic type parameters, a generic type definition can have both covariant and contravariant generic type parameters in its definition: public delegate TResult Func<in T, out TResult>(T arg); A generic type parameter that is not marked covariant (out) or contravariant (in) is invariant. All the types in the .NET Framework where variance could be applied to its generic type parameters have been modified to take advantage of this new feature. In summary, the rules for variance in C# (and .NET) are: Variance in type parameters are restricted to generic interface and generic delegate types. A generic interface or generic delegate type can have both covariant and contravariant type parameters. Variance applies only to reference types; if you specify a value type for a variant type parameter, that type parameter is invariant for the resulting constructed type. Variance does not apply to delegate combination. That is, given two delegates of types Action<Derived> and Action<Base>, you cannot combine the second delegate with the first although the result would be type safe. Variance allows the second delegate to be assigned to a variable of type Action<Derived>, but delegates can combine only if their types match exactly. If you want to learn more about variance in C# (and .NET), you can always read: Covariance and Contravariance in Generics — MSDN Library Exact rules for variance validity — Eric Lippert Events get a little overhaul in C# 4, Afterward: Effective Events — Chris Burrows Note: Because variance is a feature of .NET 4.0 and not only of C# 4.0, all this also applies to Visual Basic 10.

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  • Example of DOD design (on a generic Zombie game)

    - by Jeffrey
    I can't seem to find a nice explanation of the Data Oriented Design for a generic zombie game (it's just an example, pretty common example). Could you make an example of the Data Oriented Design on creating a generic zombie class? Is the following good? Zombie list class: class ZombieList { GLuint vbo; // generic zombie vertex model std::vector<color>; // object default color std::vector<texture>; // objects textures std::vector<vector3D>; // objects positions public: unsigned int create(); // return object id void move(unsigned int objId, vector3D offset); void rotate(unsigned int objId, float angle); void setColor(unsigned int objId, color c); void setPosition(unsigned int objId, color c); void setTexture(unsigned int, unsigned int); ... void update(Player*); // move towards player, attack if near } Example: Player p; Zombielist zl; unsigned int first = zl.create(); zl.setPosition(first, vector3D(50, 50)); zl.setTexture(first, texture("zombie1.png")); ... while (running) { // main loop ... zl.update(&p); zl.draw(); // draw every zombie } Or would creating a generic World container that contains every action from bite(zombieId, playerId) to moveTo(playerId, vector) to createPlayer() to shoot(playerId, vector) to face(radians)/face(vector); and contains: std::vector<zombie> std::vector<player> ... std::vector<mapchunk> ... std::vector<vbobufferid> player_run_animation; ... be a good example? Whats the proper way to organize a game with DOD?

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  • Ideal data structure/techniques for storing generic scheduler data in C#

    - by GraemeMiller
    I am trying to implement a generic scheduler object in C# 4 which will output a table in HTML. Basic aim is to show some object along with various attributes, and whether it was doing something in a given time period. The scheduler will output a table displaying the headers: Detail Field 1 ....N| Date1.........N I want to initialise the table with a start date and an end date to create the date range (ideally could also do other time periods e.g. hours but that isn't vital). I then want to provide a generic object which will have associated events. Where an object has events within the period I want a table cell to be marked E.g. Name Height Weight 1/1/2011 2/1/2011 3/1/20011...... 31/1/2011 Ben 5.11 75 X X X Bill 5.7 83 X X So I created scheduler with Start Date=1/1/2011 and end date 31/1/2011 I'd like to give it my person object (already sorted) and tell it which fields I want displayed (Name, Height, Weight) Each person has events which have a start date and end date. Some events will start and end outwith but they should still be shown on the relevant date etc. Ideally I'd like to have been able to provide it with say a class booking object as well. So I'm trying to keep it generic. I have seen Javasript implementations etc of similar. What would a good data structure be for this? Any thoughts on techniques I could use to make it generic. I am not great with generics so any tips appreciated.

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  • 3.2.0-31-generic version doesn't boot

    - by user92526
    12.04 used to work just fine a month ago. Since August, I installed all of the available updates. Since then my mac-pro is acting weird. If I restart the computer, the screen gets stuck in the purple back ground without any texts. Then if I restart again, I can choose what versions of linux I want to run. If I select 3.2.0-31-generic, the machine gets stuck in a state of blinking cursor. If I boot again to run 3.2.0-31-generic recovery mode, the machine gets stuck in a "..... memory freed End of Stack" mode. I can't boot through this kernel. I have to choose an older version of linux like 3.2.0-12-generic to boot into my mac pro, but I have too boot twice to get into this version. I was wondering --if you could provide me a solution to boot the 3.2.0-31-generic version. -- if you could provide me a solution to boot into any version the first time I restart. (Usually I have to kill the first restart) --- If there is an option in linux to choose what version I want to run every time I restart so that I don't have to choose everytime. Thank you

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  • Cannot find root device after latest kernel upgrade

    - by DisgruntledGoat
    I'm running Ubuntu 13.04. Yesterday I tried to install updates but there was an error, and it suggested running apt-get -f install which I did. Now when I try to boot, I get an error "Gave up waiting for root device". The text is almost identical to the text shown in this and this question. However, the "built-in shell" simply doesn't work! Nothing I type shows up on the screen or does anything. I tried adding a rootdelay to grub but it just waits longer and shows the same screen. Loading the previous kernel works (although there are a few graphics glitches) but as far as I can tell, it should be booting the exact same stuff. The new kernel is 3.8.0-31-generic and the previous working one is 3.8.0-25-generic. Here is my entire /boot/grub/menu.lst file, comments removed: default 0 timeout 3 title Ubuntu 13.04, kernel 3.8.0-31-generic uuid c690c1e6-beb9-46e7-85c2-145cd07d44ac kernel /boot/vmlinuz-3.8.0-31-generic root=UUID=c690c1e6-beb9-46e7-85c2-145cd07d44ac rootdelay=120 ro quiet splash initrd /boot/initrd.img-3.8.0-31-generic quiet title Ubuntu 13.04, kernel 3.8.0-31-generic (recovery mode) uuid c690c1e6-beb9-46e7-85c2-145cd07d44ac kernel /boot/vmlinuz-3.8.0-31-generic root=UUID=c690c1e6-beb9-46e7-85c2-145cd07d44ac ro single initrd /boot/initrd.img-3.8.0-31-generic title Ubuntu 13.04, kernel 3.8.0-25-generic uuid c690c1e6-beb9-46e7-85c2-145cd07d44ac kernel /boot/vmlinuz-3.8.0-25-generic root=UUID=c690c1e6-beb9-46e7-85c2-145cd07d44ac ro quiet splash initrd /boot/initrd.img-3.8.0-25-generic quiet title Ubuntu 13.04, kernel 3.8.0-25-generic (recovery mode) uuid c690c1e6-beb9-46e7-85c2-145cd07d44ac kernel /boot/vmlinuz-3.8.0-25-generic root=UUID=c690c1e6-beb9-46e7-85c2-145cd07d44ac ro single initrd /boot/initrd.img-3.8.0-25-generic title Ubuntu 13.04, kernel 3.8.0-23-generic uuid c690c1e6-beb9-46e7-85c2-145cd07d44ac kernel /boot/vmlinuz-3.8.0-23-generic root=UUID=c690c1e6-beb9-46e7-85c2-145cd07d44ac ro quiet splash initrd /boot/initrd.img-3.8.0-23-generic quiet title Ubuntu 13.04, kernel 3.8.0-23-generic (recovery mode) uuid c690c1e6-beb9-46e7-85c2-145cd07d44ac kernel /boot/vmlinuz-3.8.0-23-generic root=UUID=c690c1e6-beb9-46e7-85c2-145cd07d44ac ro single initrd /boot/initrd.img-3.8.0-23-generic title Ubuntu 13.04, memtest86+ uuid c690c1e6-beb9-46e7-85c2-145cd07d44ac kernel /boot/memtest86+.bin quiet title -------------------------------- root title Windows Vista rootnoverify (hd0,2) savedefault makeactive chainloader +1 As you can see the UUID is the same for all kernels. Why am I getting this problem, and what can I do to fix it?

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  • How to keep a generic process unique?

    - by Steve Van Opstal
    I'm currently working on a project that makes connection between different banks which send us information on which that project replies. A part of that project configures the different protocols that are used (not every bank uses the same protocol), this runs on a separate server. These processes all have unique id's which are stored in a database. But to save time and money on configurations and new processes, we want to make a generic protocol that banks can use. Because of PCI requirements we have to make a separate process for every bank we connect to. But the generic process has only 1 unique identifier and therefor we cannot keep them apart. Giving every copy of that process a different identifier is as I see it impossible because they run entirely separate. So how do I keep my generic process unique?

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  • Creating typed WSDL’s for generic WCF services of the ESB Toolkit

    - by charlie.mott
    source: http://geekswithblogs.net/charliemott Question How do you make it easy for client systems to consume the generic WCF services exposed by the ESB Toolkit using messages that conform to agreed schemas\contracts?  Usually the developer of a system consuming a web service adds a service reference using a WSDL. However, the WSDL’s for the generic services exposed by the ESB Toolkit do not make it easy to develop clients that conform to agreed schemas\contracts. Recommendation Take a copy of the generic WSDL’s and modify it to use the proper contracts. This is very easy.  It will work with the generic on ramps so long as the <part>?</part> wrapping is removed from the WCF adapter configuration in the BizTalk receive locations.  Attempting to create a WSDL where the input and output messages are sent/returned with a <part> wrapper is a nightmare.  I have not managed it.  Consequences I can only see the following consequences of removing the <part> wrapper: ESB Test Client – I needed to modify the out-of-the-box ESB Test Client source code to make it send non-wrapped messages.  Flat file formatted messages – the endpoint will no longer support flat file message formats.  However, even if you needed to support this integration pattern through WCF, you would most-likely want to create a separate receive location anyway with its’ own independently configured XML disassembler pipeline component. Instructions These steps show how to implement a request-response implementation of this. WCF Receive Locations In BizTalk, for the WCF receive location for the ESB on-ramp, set the adapter Message settings\bindings to “UseBodyPath”: Inbound BizTalk message body  = Body Outbound WCF message body = Body Create a WSDL’s for each supported integration use-case Save a copy of the WSDL for the WCF generic receive location above that you intend the client system to use. Give it a name that mirrors the interface agreement (e.g. Esb_SuppliersSearchCommand_wsHttpBinding.wsdl).   Add any xsd schemas files imported below to this same folder.   Edit the WSDL to import schemas For example, this: <xsd:schema targetNamespace=http://microsoft.practices.esb/Imports /> … would become something like: <xsd:schema targetNamespace="http://microsoft.practices.esb/Imports">     <xsd:import schemaLocation="SupplierSearchCommand_V1.xsd"                            namespace="http://schemas.acme.co.uk/suppliersearchcommand/1.0"/>     <xsd:import  schemaLocation="SuppliersDocument_V1.xsd"                              namespace="http://schemas.acme.co.uk/suppliersdocument/1.0"/>     <xsd:import schemaLocation="Types\Supplier_V1.xsd"                              namespace="http://schemas.acme.co.uk/types/supplier/1.0"/>     <xsd:import  schemaLocation="GovTalk\bs7666-v2-0.xsd"                               namespace="http://www.govtalk.gov.uk/people/bs7666"/>     <xsd:import  schemaLocation="GovTalk\CommonSimpleTypes-v1-3.xsd"                             namespace="http://www.govtalk.gov.uk/core"/>     <xsd:import  schemaLocation="GovTalk\AddressTypes-v2-0.xsd"                              namespace="http://www.govtalk.gov.uk/people/AddressAndPersonalDetails"/> </xsd:schema> Modify the Input and Output message For example, this: <wsdl:message name="ProcessRequestResponse_SubmitRequestResponse_InputMessage">   <wsdl:part name="part" type="xsd:anyType"/> </wsdl:message> <wsdl:message name="ProcessRequestResponse_SubmitRequestResponse_OutputMessage">   <wsdl:part name="part" type="xsd:anyType"/> </wsdl:message> … would become something like: <wsdl:message name="ProcessRequestResponse_SubmitRequestResponse_InputMessage">   <wsdl:part name="part"                       element="ssc:SupplierSearchEvent"                         xmlns:ssc="http://schemas.acme.co.uk/suppliersearchcommand/1.0" /> </wsdl:message> <wsdl:message name="ProcessRequestResponse_SubmitRequestResponse_OutputMessage">   <wsdl:part name="part"                       element="sd:SuppliersDocument"                       xmlns:sd="http://schemas.acme.co.uk/suppliersdocument/1.0"/> </wsdl:message> This WSDL can now be added as a service reference in client solutions.

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  • Ruby. Mongoid. Relations

    - by Scepion1d
    I've encountered some problems with MongoID. I have three models: require 'mongoid' class Configuration include Mongoid::Document belongs_to :user field :links, :type => Array field :root, :type => String field :objects, :type => Array field :categories, :type => Array has_many :entries end class TimeDim include Mongoid::Document field :day, :type => Integer field :month, :type => Integer field :year, :type => Integer field :day_of_week, :type => Integer field :minute, :type => Integer field :hour, :type => Integer has_many :entries end class Entry include Mongoid::Document belongs_to :configuration belongs_to :time_dim field :category, :type => String # any other dynamic fields end Creating documents for Configurations and TimeDims is successful. But when i've trying to execute following code: params = Hash.new params[:configuration] = config # an instance of Configuration from DB entry.each do |key, value| params[key.to_sym] = value # String end unless Entry.exists?(conditions: params) params[:time_dim] = self.generate_time_dim # an instance of TimeDim from DB params[:category] = self.detect_category(descr) # String Entry.new(params).save end ... i saw following output: /home/scepion1d/Workspace/RubyMine/dana-x/.bundle/ruby/1.9.1/gems/bson-1.6.1/lib/bson/bson_c.rb:24:in `serialize': Cannot serialize an object of class Configuration into BSON. (BSON::InvalidDocument) from /home/scepion1d/Workspace/RubyMine/dana-x/.bundle/ruby/1.9.1/gems/bson-1.6.1/lib/bson/bson_c.rb:24:in `serialize' from /home/scepion1d/Workspace/RubyMine/dana-x/.bundle/ruby/1.9.1/gems/mongo-1.6.1/lib/mongo/cursor.rb:604:in `construct_query_message' from /home/scepion1d/Workspace/RubyMine/dana-x/.bundle/ruby/1.9.1/gems/mongo-1.6.1/lib/mongo/cursor.rb:465:in `send_initial_query' from /home/scepion1d/Workspace/RubyMine/dana-x/.bundle/ruby/1.9.1/gems/mongo-1.6.1/lib/mongo/cursor.rb:458:in `refresh' from /home/scepion1d/Workspace/RubyMine/dana-x/.bundle/ruby/1.9.1/gems/mongo-1.6.1/lib/mongo/cursor.rb:128:in `next' from /home/scepion1d/Workspace/RubyMine/dana-x/.bundle/ruby/1.9.1/gems/mongo-1.6.1/lib/mongo/db.rb:509:in `command' from /home/scepion1d/Workspace/RubyMine/dana-x/.bundle/ruby/1.9.1/gems/mongo-1.6.1/lib/mongo/cursor.rb:191:in `count' from /home/scepion1d/Workspace/RubyMine/dana-x/.bundle/ruby/1.9.1/gems/mongoid-2.4.6/lib/mongoid/cursor.rb:42:in `block in count' from /home/scepion1d/Workspace/RubyMine/dana-x/.bundle/ruby/1.9.1/gems/mongoid-2.4.6/lib/mongoid/collections/retry.rb:29:in `retry_on_connection_failure' from /home/scepion1d/Workspace/RubyMine/dana-x/.bundle/ruby/1.9.1/gems/mongoid-2.4.6/lib/mongoid/cursor.rb:41:in `count' from /home/scepion1d/Workspace/RubyMine/dana-x/.bundle/ruby/1.9.1/gems/mongoid-2.4.6/lib/mongoid/contexts/mongo.rb:93:in `count' from /home/scepion1d/Workspace/RubyMine/dana-x/.bundle/ruby/1.9.1/gems/mongoid-2.4.6/lib/mongoid/criteria.rb:45:in `count' from /home/scepion1d/Workspace/RubyMine/dana-x/.bundle/ruby/1.9.1/gems/mongoid-2.4.6/lib/mongoid/finders.rb:60:in `exists?' from /home/scepion1d/Workspace/RubyMine/dana-x/crawler/crawler.rb:110:in `block (2 levels) in push_entries_to_db' from /home/scepion1d/Workspace/RubyMine/dana-x/crawler/crawler.rb:103:in `each' from /home/scepion1d/Workspace/RubyMine/dana-x/crawler/crawler.rb:103:in `block in push_entries_to_db' from /home/scepion1d/Workspace/RubyMine/dana-x/crawler/crawler.rb:102:in `each' from /home/scepion1d/Workspace/RubyMine/dana-x/crawler/crawler.rb:102:in `push_entries_to_db' from main_starter.rb:15:in `<main>' Can anyone tell what am I doing wrong?

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  • generic programming- where did it originate?

    - by user997112
    Im trying to work out if generic programming was a functional programming feature which was then introduced into Java, C++ and C# or did the latter copy it from the functional programming languages like Haskell, Lisp, OCaml etc? Google is giving me lots on what generic programming is, but not where it originated. All I can see is that Ada implemented it early on. Would you class it as a functional programming technique?

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  • dataset - set parent child relations

    - by Night Walker
    Hello all I am trying to set the relations of rows in DataSet and then to show that relation in XTraaTreeList as tree with relations. | --| ----| but i get | | | I am doing this code but i get a view without any relations i get them all in one level. Any idea what i am doing wrong ? this.treeList1.BeginUpdate(); this.dataTable1.Clear(); DataRow dr = this.dataTable1.NewRow(); dr[0] = "father"; dr[1] = true; dr[2] = "ddd"; this.dataTable1.Rows.Add(dr); DataRow dr1 = this.dataTable1.NewRow(); dr1[0] = "son"; dr1[1] = true; dr1[2] = "ddd"; dr1.SetParentRow(dr); this.dataTable1.Rows.Add(dr1); DataRow dr2 = this.dataTable1.NewRow(); this.dataTable1.ParentRelations() dr2[0] = "grand son"; dr2[1] = true; dr2[2] = "ddd"; dr2.SetParentRow(dr1); this.dataTable1.Rows.Add(dr2); this.treeList1.EndUpdate();

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  • Ubuntu 12.10 unmet dependencies

    - by John
    I have Ubuntu 12.10 with 3.2.0.24-generic #39-Ubuntu running on a Dell Inspiron 700m laptop. I have unmet dependencies as follows: root@John-700m:/home/John# sudo apt-get remove --purge linux-image-3.5.0-{18,27,31,34}-generic Reading package lists... Done Building dependency tree Reading state information... Done Package 'linux-image-3.5.0-18-generic' is not installed, so not removed Package 'linux-image-3.5.0-27-generic' is not installed, so not removed Package 'linux-image-3.5.0-31-generic' is not installed, so not removed Package 'linux-image-3.5.0-34-generic' is not installed, so not removed You might want to run 'apt-get -f install' to correct these: The following packages have unmet dependencies: linux-generic : Depends: linux-image-generic but it is not going to be installed linux-image-extra-3.5.0-18-generic : Depends: linux-image-3.5.0-18-generic but it is not going to be installed linux-image-extra-3.5.0-27-generic : Depends: linux-image-3.5.0-27-generic but it is not going to be installed linux-image-extra-3.5.0-31-generic : Depends: linux-image-3.5.0-31-generic but it is not going to be installed linux-image-extra-3.5.0-34-generic : Depends: linux-image-3.5.0-34-generic but it is not going to be installed E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution). I tried to remove the packages, but I still get the same error message. Any help would certainly be appreciated. @Eric, well noted. Here is the reults: model name : Intel(R) Pentium(R) M processor 1.60GHz flags : fpu vme de pse tsc msr mce cx8 mtrr pge mca cmov clflush dts acpi mmx fxsr sse sse2 ss tm pbe up bts est tm2 Thanks again. @Eric, If I need to downgrade to Ubuntu 12.04 from 12.10, can I do it without having to mess my current partition or files? I also have Windows XP running on the machine. Best. @Eric, if you are online, I could use your help (or anybody's else). I installed the package for non-pae unit and I still get the same error. Any suggestions? Thanks

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  • Generic Repositories with DI & Data Intensive Controllers

    - by James
    Usually, I consider a large number of parameters as an alarm bell that there may be a design problem somewhere. I am using a Generic Repository for an ASP.NET application and have a Controller with a growing number of parameters. public class GenericRepository<T> : IRepository<T> where T : class { protected DbContext Context { get; set; } protected DbSet<T> DbSet { get; set; } public GenericRepository(DbContext context) { Context = context; DbSet = context.Set<T>(); } ...//methods excluded to keep the question readable } I am using a DI container to pass in the DbContext to the generic repository. So far, this has met my needs and there are no other concrete implmentations of IRepository<T>. However, I had to create a dashboard which uses data from many Entities. There was also a form containing a couple of dropdown lists. Now using the generic repository this makes the parameter requirments grow quickly. The Controller will end up being something like public HomeController(IRepository<EntityOne> entityOneRepository, IRepository<EntityTwo> entityTwoRepository, IRepository<EntityThree> entityThreeRepository, IRepository<EntityFour> entityFourRepository, ILogError logError, ICurrentUser currentUser) { } It has about 6 IRepositories plus a few others to include the required data and the dropdown list options. In my mind this is too many parameters. From a performance point of view, there is only 1 DBContext per request and the DI container will serve the same DbContext to all of the Repositories. From a code standards/readability point of view it's ugly. Is there a better way to handle this situation? Its a real world project with real world time constraints so I will not dwell on it too long, but from a learning perspective it would be good to see how such situations are handled by others.

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  • Announcing Oracle Receivables Generic Data Fix (GDF) for Refunds

    - by user793553
    Here's the first of what will be a series of Generic Data Fixes (GDF) to be released by Receivables Development. Generic Data Fix (GDF) are created by development to fix data issues caused by bugs/issues in the application code.  Other Generic Data Fix benefits/features include: Developed for bugs that can cause data issues. Provides a SELECT script that uses an identification/signature query to identify and report all data affected by issue/condition caused by a bug. Allow customers to view and modify what will be fixed. Provides a separate FIX script to fix the data reported by the SELECT script. The FIX script creates backup tables for the data that is fixed/updated. Available on My Oracle Support for download In Release 12, when creating a refund by either of the following methods: Applied a receipt to the Refund activity - which creates an Invoice in Payables Or you went directly into Payables to create a refund for an open Credit Memo in Receivables The Invoice in Payables that is associated to the refund is cancelled, the corresponding refund application or credit memo in Receivables is not properly re-instated. For the receipt application, it still remains applied to the Refund whereas this should be automatically unapplied. For the credit memo, it stays closed instead of getting re-opened. Doc ID 761993.1 includes the patch to make sure this doesn’t happen in the future as well as a GDF script to fix the current data (Script name: ar_std_refund_unapp.sql).  Download the script and run in READ_ONLY_MODE to identify 'refund' applications with this problem. Stay tuned for more GDF scripts coming soon...

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  • after upgrade from 10.04 to 12.04 cannot boot with linux 3.2.0-24-generic-pae

    - by Ricardo
    After upgrade from 10.04 to 12.04, I cannot boot with linux 3.2.0-24-generic-pae: process gets frozen in a xubuntu initialization screen (I had qimo installed). If I try the recovery mode (with the same Linux version), booting freezes after this message: Begin: Mounting root file system. If in grub menu I choose Previous Linux versions, I can boot using Linux 2.6.32-41-generic-pae. But once logged in, some things don't seem to work (apt-get update fails, update manager fails, HID menu does not provide suggestions...) (to be honest, I have no idea whether this is part of the bigger issue) Reading in Ask Ubuntu through apparently similar problems, I decided to follow some advices: got boot-repair and run it. The problem remains & I got this report. I also run as root in terminal $ sudo update-initramfs -u and this is what I got: update-initramfs: Generating /boot/initrd.img-3.2.0-24-generic-pae cryptsetup: WARNING: failed to detect canonical device of /dev/sda1 cryptsetup: WARNING: could not determine root device from /etc/fstab /tmp/mkinitramfs_EIDlHy/scripts/classmate-bottom/45xconfig: 9: .: Can't open /scripts/casper-functions What else? My pc is Intel® Core™ i7 CPU 870 @ 2.93GHz × 8, graphs is GeForce 8400 GS/PCIe/SSE2, memory is 7,8 GiB. I have two questions: Is this a bug in the newest kernel I should report? Is there anything I can do appart from a fresh install?

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  • Lubuntu 13.04, kernel still 3.8.0-32-generic

    - by Blue Ice
    My question is very similar to Ubuntu 13.10, kernel still 3.8.0-31-generic. Recently was updating to Saucy and the ethernet cable got unplugged. So I decided to run Software Update again, to reinstall files. It returned that "everything is up to date". But according to these command-line searches, that is incorrect. How can I install Saucy now safely from the command line? sudo apt-get install lubuntu-desktop Reading package lists... Done Building dependency tree Reading state information... Done lubuntu-desktop is already the newest version. The following package was automatically installed and is no longer required: linux-image-extra-3.8.0-19-generic Use 'apt-get autoremove' to remove it. 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. sudo apt-get dist-upgrade Reading package lists... Done Building dependency tree Reading state information... Done Calculating upgrade... Done 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. sudo apt-get update Get:1 http://extras.ubuntu.com raring Release.gpg [72 B] Hit http://extras.ubuntu.com raring Release Get:2 http://az-1.hpcloud.mirror.websitedevops.com raring Release.gpg Hit http://extras.ubuntu.com raring/main Sources Hit http://extras.ubuntu.com raring/main i386 Packages Get:3 http://az-1.hpcloud.mirror.websitedevops.com raring-updates Release.gpg Get:4 http://az-1.hpcloud.mirror.websitedevops.com raring-backports Release.gpg Get:5 http://az-1.hpcloud.mirror.websitedevops.com raring-security Release.gpg Get:6 http://az-1.hpcloud.mirror.websitedevops.com raring Release Ign http://extras.ubuntu.com raring/main Translation-en_US Ign http://extras.ubuntu.com raring/main Translation-en Hit http://ppa.launchpad.net raring Release.gpg Ign http://az-1.hpcloud.mirror.websitedevops.com raring Release E: GPG error: http://az-1.hpcloud.mirror.websitedevops.com raring Release: The following signatures were invalid: NODATA 1 NODATA 2 lsb_release -rd Description: Ubuntu 13.04 Release: 13.04 uname -r 3.8.0-32-generic

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  • Start fail VMware-Player 3.1.5 on Ubuntu 12.04 32bit

    - by Chris Lee
    Install got no problem but at start of VMWare Player it want to compile and exit with this error: "Unable to build kernel module." Thats the log: Jun 05 00:03:36.153: app-3075712704| Log for VMware Workstation pid=3709 version=7.1.5 build=build-491717 option=Release Jun 05 00:03:36.153: app-3075712704| The process is 32-bit. Jun 05 00:03:36.153: app-3075712704| Host codepage=UTF-8 encoding=UTF-8 Jun 05 00:03:36.153: app-3075712704| Logging to /tmp/vmware-root/setup-3709.log Jun 05 00:03:36.284: app-3075712704| modconf query interface initialized Jun 05 00:03:36.284: app-3075712704| modconf library initialized Jun 05 00:03:36.336: app-3075712704| Your GCC version: 4.6 Jun 05 00:03:36.350: app-3075712704| Your GCC version: 4.6 Jun 05 00:03:36.371: app-3075712704| Your GCC version: 4.6 Jun 05 00:03:36.417: app-3075712704| Your GCC version: 4.6 Jun 05 00:03:36.429: app-3075712704| Your GCC version: 4.6 Jun 05 00:03:36.521: app-3075712704| Trying to find a suitable PBM set for kernel 3.2.0-24-generic-pae. Jun 05 00:03:36.526: app-3075712704| Trying to find a suitable PBM set for kernel 3.2.0-24-generic-pae. Jun 05 00:03:36.529: app-3075712704| Trying to find a suitable PBM set for kernel 3.2.0-24-generic-pae. Jun 05 00:03:36.533: app-3075712704| Trying to find a suitable PBM set for kernel 3.2.0-24-generic-pae. Jun 05 00:03:36.536: app-3075712704| Trying to find a suitable PBM set for kernel 3.2.0-24-generic-pae. Jun 05 00:03:36.579: app-3075712704| Trying to find a suitable PBM set for kernel 3.2.0-24-generic-pae. Jun 05 00:03:36.583: app-3075712704| Trying to find a suitable PBM set for kernel 3.2.0-24-generic-pae. Jun 05 00:03:36.586: app-3075712704| Trying to find a suitable PBM set for kernel 3.2.0-24-generic-pae. Jun 05 00:03:36.589: app-3075712704| Trying to find a suitable PBM set for kernel 3.2.0-24-generic-pae. Jun 05 00:03:36.593: app-3075712704| Trying to find a suitable PBM set for kernel 3.2.0-24-generic-pae. Jun 05 00:03:36.602: app-3075712704| Your GCC version: 4.6 Jun 05 00:03:36.624: app-3075712704| Your GCC version: 4.6 Jun 05 00:03:39.677: app-3075712704| Trying to find a suitable PBM set for kernel 3.2.0-24-generic-pae. Jun 05 00:03:39.689: app-3075712704| Trying to find a suitable PBM set for kernel 3.2.0-24-generic-pae. Jun 05 00:03:39.694: app-3075712704| Trying to find a suitable PBM set for kernel 3.2.0-24-generic-pae. Jun 05 00:03:39.697: app-3075712704| Trying to find a suitable PBM set for kernel 3.2.0-24-generic-pae. Jun 05 00:03:39.701: app-3075712704| Trying to find a suitable PBM set for kernel 3.2.0-24-generic-pae. Jun 05 00:03:39.711: app-3075712704| Your GCC version: 4.6 Jun 05 00:03:39.733: app-3075712704| Your GCC version: 4.6 Jun 05 00:03:39.854: app-3075712704| Trying to find a suitable PBM set for kernel 3.2.0-24-generic-pae. Jun 05 00:03:39.858: app-3075712704| Trying to find a suitable PBM set for kernel 3.2.0-24-generic-pae. Jun 05 00:03:39.862: app-3075712704| Trying to find a suitable PBM set for kernel 3.2.0-24-generic-pae. Jun 05 00:03:39.865: app-3075712704| Trying to find a suitable PBM set for kernel 3.2.0-24-generic-pae. Jun 05 00:03:39.868: app-3075712704| Trying to find a suitable PBM set for kernel 3.2.0-24-generic-pae. Jun 05 00:03:40.065: app-3075712704| Trying to find a suitable PBM set for kernel 3.2.0-24-generic-pae. Jun 05 00:03:40.066: app-3075712704| Building module vmmon. Jun 05 00:03:40.066: app-3075712704| Extracting the sources of the vmmon module. Jun 05 00:03:40.075: app-3075712704| Building module with command: /usr/bin/make -C /tmp/vmware-root/modules/vmmon-only auto-build SUPPORT_SMP=1 HEADER_DIR=/lib/modules/3.2.0-24-generic-pae/build/include CC=/usr/bin/gcc GREP=/usr/bin/make IS_GCC_3=no VMCCVER=4.6 Jun 05 00:03:42.016: app-3075712704| Failed to compile module vmmon! Is it a gcc problem ?

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  • nvidia driver problems after upgrading to 3.2.0-26 on Ubuntu 12.04 64bit

    - by Lev Levitsky
    After installing latest updates I can't set screen resolution higher than 1024x768; every time after the boot I get a message Could not apply the stored configuration for the monitors (Note: removing ~/.config/monitors.xml stopped the message, but not the problem) I can boot with 3.2.0-25 and the graphics look normal. Here's what I have in /var/log/apt/term.log (excerpt): Setting up linux-image-3.2.0-26-generic (3.2.0-26.41) ... Running depmod. update-initramfs: deferring update (hook will be called later) Examining /etc/kernel/postinst.d. run-parts: executing /etc/kernel/postinst.d/dkms 3.2.0-26-generic /boot/vmlinuz-3.2.0-26-generic Error! Problems with depmod detected. Automatically uninstalling this module. DKMS: Install Failed (depmod problems). Module rolled back to built state. run-parts: executing /etc/kernel/postinst.d/initramfs-tools 3.2.0-26-generic /boot/vmlinuz-3.2.0-26-generic update-initramfs: Generating /boot/initrd.img-3.2.0-26-generic run-parts: executing /etc/kernel/postinst.d/pm-utils 3.2.0-26-generic /boot/vmlinuz-3.2.0-26-generic run-parts: executing /etc/kernel/postinst.d/update-notifier 3.2.0-26-generic /boot/vmlinuz-3.2.0-26-generic run-parts: executing /etc/kernel/postinst.d/zz-update-grub 3.2.0-26-generic /boot/vmlinuz-3.2.0-26-generic Generating grub.cfg ... Found linux image: /boot/vmlinuz-3.2.0-26-generic Found initrd image: /boot/initrd.img-3.2.0-26-generic Found linux image: /boot/vmlinuz-3.2.0-25-generic Found initrd image: /boot/initrd.img-3.2.0-25-generic Found linux image: /boot/vmlinuz-3.2.0-24-generic Found initrd image: /boot/initrd.img-3.2.0-24-generic Found linux image: /boot/vmlinuz-3.2.0-23-generic Found initrd image: /boot/initrd.img-3.2.0-23-generic Found linux image: /boot/vmlinuz-3.0.0-17-generic Found initrd image: /boot/initrd.img-3.0.0-17-generic Found memtest86+ image: /boot/memtest86+.bin I went to "additional drivers" and saw some updates available there, but an attempt to install them failed, leaving the following in /var/log/jockey.log (long log, pasted here). The full log won't fit in the question, so I'm showing $ fgrep 'ERROR' /var/log/jockey.log 2012-06-30 17:29:57,897 WARNING: modinfo for module vmxnet failed: ERROR: modinfo: could not find module vmxnet 2012-06-30 17:29:57,937 WARNING: modinfo for module wl failed: ERROR: modinfo: could not find module wl 2012-06-30 17:29:58,072 WARNING: modinfo for module nvidia_96 failed: ERROR: modinfo: could not find module nvidia_96 2012-06-30 17:29:58,240 WARNING: modinfo for module nvidia_current failed: ERROR: modinfo: could not find module nvidia_current 2012-06-30 17:29:58,293 WARNING: modinfo for module nvidia_current_updates failed: ERROR: modinfo: could not find module nvidia_current_updates 2012-06-30 17:29:58,351 WARNING: modinfo for module nvidia_173_updates failed: ERROR: modinfo: could not find module nvidia_173_updates 2012-06-30 17:29:58,385 WARNING: modinfo for module nvidia_173 failed: ERROR: modinfo: could not find module nvidia_173 2012-06-30 17:29:58,420 WARNING: modinfo for module nvidia_96_updates failed: ERROR: modinfo: could not find module nvidia_96_updates 2012-06-30 17:29:58,455 WARNING: modinfo for module ath_pci failed: ERROR: modinfo: could not find module ath_pci 2012-06-30 17:29:58,478 WARNING: modinfo for module fglrx_updates failed: ERROR: modinfo: could not find module fglrx_updates 2012-06-30 17:29:58,531 WARNING: modinfo for module fglrx failed: ERROR: modinfo: could not find module fglrx 2012-06-30 17:29:58,588 WARNING: modinfo for module omapdrm_pvr failed: ERROR: modinfo: could not find module omapdrm_pvr 2012-06-30 17:29:59,537 WARNING: modinfo for module nvidia_current failed: ERROR: modinfo: could not find module nvidia_current 2012-06-30 17:29:59,613 WARNING: modinfo for module nvidia_173_updates failed: ERROR: modinfo: could not find module nvidia_173_updates 2012-06-30 17:29:59,686 WARNING: modinfo for module nvidia_173 failed: ERROR: modinfo: could not find module nvidia_173 2012-06-30 17:29:59,764 WARNING: modinfo for module nvidia_current_updates failed: ERROR: modinfo: could not find module nvidia_current_updates 2012-06-30 17:30:29,544 WARNING: modinfo for module nvidia_current_updates failed: ERROR: modinfo: could not find module nvidia_current_updates 2012-06-30 17:30:29,545 ERROR: XorgDriverHandler.enable(): package or module not installed, aborting I'm not sure if it's a bug, as the first log shows some errors. What can I try?

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  • With C# 3.0, how to write Interface based code with generic collection?

    - by Deecay
    I want to write code that is decouple and clean, and I know that by programming to an interface instead of the implementation, my code will be more flexible and extensible. So, instead of writing methods like: bool IsProductAvailable(ProductTypeA product); I write methods like: bool IsProductAvailable(IProduct product); As long as my products implement IProduct: class ProductTypeA : IProduct I should be OK. All is well until I start using generic collections. Since C# 3.0 doesn't support covariant and contravariant, even though both ProuctTypeA and ProductTypeB implements IProduct, you cannot put List in List. This is pretty troublesome because a lot of times I want to write something like: bool AreProductsAvailable(List<IProduct> products); So that I can check product avaialbility by writing: List<ProductA> productsArrived = GetDataFromDataabase(); bool result = AreProductsAvailable(productsArrived); And I want to write just one AreProductsAvailable() method that works with all IProduct collections. I know that C# 4.0 is going to support covariant and contravariant, but I also realize that there other libraries that seemed to have the problem solved. For instance, I was trying out ILOG Gantt the gantt chart control, and found that they have a lot of collection intefaces that looks like this: IActivityCollection ILinkCollection So it seems like their approach is wrapping the generic collection with an interface. So instead of "bool AreProductsAvailable(List products);", I can do: bool AreProductsAvailable(IProductCollection products); And then write some code so that IProductCollection takes whatever generic collection of IProduct, be it List or List. However, I don't know how to write an IProductCollection interface that does that "magic". :-< (ashame) .... Could someone shed me some light? This has been bugging me for so long, and I so wanted to do the "right thing". Well, thanks!

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  • Symfony: embedRelation() controlling options for nesting multiple levels of relations

    - by wulftone
    Hey all, I'm trying to set some conditional statements for nested embedRelation() instances, and can't find a way to get any kind of option through to the second embedRelation. I've got a "Measure-Page-Question" table relationship, and I'd like to be able to choose whether or not to display the Question table. For example, say I have two "success" pages, page1Success.php and page2Success.php. On page1, I'd like to display "Measure-Page-Question", and on page2, I'd like to display "Measure-Page", but I need a way to pass an "option" to the PageForm.class.php file to make that kind of decision. My actions.class.php file has something like this: // actions.class.php $this-form = new measureForm($measure, array('option'=$option)); to pass an option to the "Page", but passing that option through "Page" into "Question" doesn't work. My measureForm.class.php file has an embedRelation in it that is dependent on the "option": // measureForm.class.php if ($this-getOption('option') == "page_1") { $this-embedRelation('Page'); } and this is what i'd like to do in my pageForm.class.php file: // pageForm.class.php if ($this-getOption('option') == "page_1") { // Or != "page_2", or whatever $this-embedRelation('Question'); } I can't seem to find a way to do this. Any ideas? Is there a preferred Symfony way of doing this type of operation, perhaps without embedRelation? Thanks, -Trevor As requested, here's my schema.yml: # schema.yml Measure: connection: doctrine tableName: measure columns: _kp_mid: type: integer(4) fixed: false unsigned: false primary: true autoincrement: true description: type: string() fixed: false unsigned: false primary: false notnull: false autoincrement: false frequency: type: integer(4) fixed: false unsigned: false primary: false notnull: false autoincrement: false relations: Page: local: _kp_mid foreign: _kf_mid type: many Page: connection: doctrine tableName: page columns: _kp_pid: type: integer(4) fixed: false unsigned: false primary: true autoincrement: true _kf_mid: type: integer(4) fixed: false unsigned: false primary: false notnull: false autoincrement: false next: type: string() fixed: false unsigned: false primary: false notnull: false autoincrement: false number: type: string() fixed: false unsigned: false primary: false notnull: false autoincrement: false previous: type: string() fixed: false unsigned: false primary: false notnull: false autoincrement: false relations: Measure: local: _kf_mid foreign: _kp_mid type: one Question: local: _kp_pid foreign: _kf_pid type: many Question: connection: doctrine tableName: question columns: _kp_qid: type: integer(4) fixed: false unsigned: false primary: true autoincrement: true _kf_pid: type: integer(4) fixed: false unsigned: false primary: false notnull: false autoincrement: false text: type: string() fixed: false unsigned: false primary: false notnull: false autoincrement: false type: type: integer(4) fixed: false unsigned: false primary: false notnull: false autoincrement: false relations: Page: local: _kf_pid foreign: _kp_pid type: one

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