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  • Calculated group-by fields in MongoDB

    - by Navin Viswanath
    For this example from the MongoDB documentation, how do I write the query using MongoTemplate? db.sales.aggregate( [ { $group : { _id : { month: { $month: "$date" }, day: { $dayOfMonth: "$date" }, year: { $year: "$date" } }, totalPrice: { $sum: { $multiply: [ "$price", "$quantity" ] } }, averageQuantity: { $avg: "$quantity" }, count: { $sum: 1 } } } ] ) Or in general, how do I group by a calculated field?

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  • Recommendtations for a simple name registrar

    - by ripper234
    I'm currently registering my domains through GoDaddy. Does the registrar matter? Any recommendations for registrars you're especially happy with? (See this very similar question, that requires API support. I need no such support, hence this question is more generic).

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  • How do I use rest-client for ruby to post an image?

    - by Angela
    I am trying to find a way to use the Postful API and I need to post an image in the body of the request. I am trying to use rest-client (but am open to other ways): This is how I am trying to use it after looking at the restclient.rb file but I'm still not clear: class ContactPostfulsController < ApplicationController require 'rest_client' RestClient.post 'http://www.postful.com/service/upload', 'the actual image...?', :content_type => 'application/octet-stream' end

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  • Delphi & Access

    - by rebel_UA
    Hi all! Please, write small Delphi-program which working woth DB Access For example, in Access will create customer-base(nickname & password), but in Delphi simple autorization form. Thanks

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  • What is the most efficient procedure for implementing a sortable ajax list on the backend?

    - by HenryL
    The most common method is to assign a sequential order field for each item in the list and do an update that maintains the sequence with every ajax sort operation. Unfortunately, this requires an update to each item of the list every time someone sorts. This is fine for small lists, but what's the best way to implement sorting for larger lists that are constantly updated? I am looking for something that minimizes DB IO.

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  • Where to put constants in Rails

    - by Sam
    I have a few constants which are arrays that I don't want to create db's for but I don't know where to store the constants without getting errors. For example CONTAINER_SIZES = [["20 foot"],["40 foot"]] Where can I store this so all models and controller have access to this?

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  • Is it possible to publish component revisions within workflow?

    - by Ianthe
    Our current setup is that we have two targets, Staging and Live. Collaborators may update the affected component while it is still within the workflow. A final activity is set to publish the related pages to Live. Is it possible to publish component updates (revisions e.g. 2.2, 2.5) to Staging from within the workflow? The TOM API documentation for Page.Publish() method does not seem to have an input parameter to fullfil such purpose.

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  • connecting to oracle

    - by LIX
    Dears, I have a report server project in VS2005, and I added an oracle data source to my project and I did anything like my college! both of us did the same settings but I can't connect to the server. I connected to DB in TOAD but in VS2005 I couldn't. What should I check? I get this error during test connection : ORA-12154: TNS:could not resolve the connect identifier specified

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  • What is the best way to handle my softwares licenses?

    - by Sergio Tapia
    By best I mean more time tested, easier to implement and easier for the users to work with. I do not want my licensing crap to interfere with their work. I was thinking of launching a WCF service that check with my license DB if it's a valid license and if it is, send a True. If the returned response is False, then shut down the program after telling them to fix their license. Do you think this is a good way to handle it?

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  • How to learn using Hadoop

    - by ajay
    hi, I want to learn hadoop. However, I don't have access to a cluster now. Is it possible for me to learn it and use it for writing programs and learn it properly. Would it be helpful to run multiple linux VMs and then use them as boxes to run hadoop? Or you think that is more of a stretch and running it on a multiple hosts is the same as running in on single host (in terms of setup, Hadoop API used, the architecture of the map-reduce programs etc) Thanks,

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  • Do Django Models inherit managers? (Mine seem not to)

    - by Zach
    I have 2 models: class A(Model): #Some Fields objects = ClassAManager() class B(A): #Some B-specific fields I would expect B.objects to give me access to an instance of ClassAManager, but this is not the case.... >>> A.objects <app.managers.ClassAManager object at 0x103f8f290> >>> B.objects <django.db.models.manager.Manager object at 0x103f94790> Why doesn't B inherit the objects attribute from A?

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  • What's the best, Escape then store Or store then escape the output?

    - by Axel
    Hi, After doing a long search on stackoverflow i didn't find any one talked about this even if it's a big choice, the Question is what's the best in order to prevent both of XSS and SQL injection, Escaping the data then store it in the DB or Store it as it is and escape when output it? Note: it is better if you give some examples of practics if possible. Thanks

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  • Multi-Part form in Codeigniter

    - by Kevin Brown
    I'm building a survey w/ Codeigniter, and it's getting cumbersomely long...so I want to split it up into sections (about 5). If I want each section to validate, and submit to db after the user clicks "next", what is the best way to do this? I've never made a multi-step process before. Any advice for a noob? :)

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  • Abstract mapping with custom JiBX marshaller

    - by aweigold
    I have created a custom JiBX marshaller and verified it works. It works by doing something like the following: <binding xmlns:tns="http://foobar.com/foo" direction="output"> <namespace uri="http://foobar.com/foo" default="elements"/> <mapping class="java.util.HashMap" marshaller="com.foobar.Marshaller1"/> <mapping name="context" class="com.foobar.Context"> <structure field="configuration"/> </mapping> </binding> However I need to create multiple marshallers for different HashMaps. So I tried to reference it with abstract mapping like this: <binding xmlns:tns="http://foobar.com/foo" direction="output"> <namespace uri="http://foobar.com/foo" default="elements"/> <mapping abstract="true" type-name="configuration" class="java.util.HashMap" marshaller="com.foobar.Marshaller1"/> <mapping abstract="true" type-name="overrides" class="java.util.HashMap" marshaller="com.foobar.Marshaller2"/> <mapping name="context" class="com.foobar.Context"> <structure map-as="configuration" field="configuration"/> <structure map-as="overrides" field="overrides"/> </mapping> </binding> However when doing so, when I attempt to build the binding, I receive the following: Error during code generation for file "E:\project\src\main\jibx\foo.jibx" - this may be due to an error in your binding or classpath, or to an error in the JiBX code My guess is that either I'm missing something I need to implement to enable my custom marshaller for abstract mapping, or custom marshallers do not support abstract mapping. I have found the IAbstractMarshaller interface in the JiBX API (http://jibx.sourceforge.net/api/org/jibx/runtime/IAbstractMarshaller.html), however the documentation seems unclear to me on if this is what I need to implement, as well as how it works if so. I have not been able to find an implementation of this interface to work off of as an example. My question is, how do you do abstract mapping with custom marshallers (if it's possible)? If it is done via the IAbstractMarshaller interface, how does it work and/or how should I implement it?

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  • get city state from google map

    - by apueee
    I'm using google map api for showing location. In that i case i need option to get city sate zip from google map marker. In map , user can move the marker to position it after drag finished it will return the city, state and zip. I have successfully get the lat and lng but how can i get the city , state and zip. please help me as soon as possible..

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  • JSON parsing using JSON.net

    - by vbNewbie
    I am accessing the facebook api and using the json.net library (newtonsoft.json.net) I declare a Jobject to parse the content and look for the specific elements and get their values. Everything works fine for the first few but then I get this unexplained nullexception error " (Object reference not set to an instance of an object) Now I took a look at the declaration but cannot see how to change it. Any help appreciated: Dim jobj as JObject = JObject.Parse(responseData) Dim message as string = string.empty message = jobj("message").tostring The error occurs at the last line above.

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  • PHP 5: What DAL are you using?

    - by overthetop
    hello I'm new to PHP and I recently started learning Zend Framework. What DAL are you using? Do you think that Zend_Db_* can do the magic? I need it mainly for MySql db. Does it have any limitations and can I use it in big project without any problems because I don't want to go the wrong way. 10x

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  • How do I Store / Access Translations Efficiently?

    - by Gilbert
    I am trying to translate some of the phrases of my website into various languages. so, in my database, I have a table with rows of ID//text//dest_language//text_in_dest_language At the moment, I retreive each translation one by one: get text_in_dest_language where text="Hello World" and dest_languge="zh" This results in 40-50 db calls per page, which, on the app engine, is rather slow. What can I do to mitigate this slowdown?

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  • how to get $form_state outside of FAPI's functions?

    - by logii
    I'm writing a custom module and I'd like to use $form_state of the current form in another non-form api function - custom_facet_view_build(). any help is appreciated :) <?php /** * Implementation of hook_perm(). */ function custom_facet_perm() { return array( 'access foo content', 'access baz content', ); } /** * Implementation of hook_menu(). */ function custom_facet_menu() { $items['faceted-search'] = array( 'title' => 'Faceted Search', 'page callback' => 'drupal_get_form', 'access arguments' => array(), ); $items['facet-search-test'] = array( 'page callback' => 'drupal_get_form', 'page arguments' => array('custom_facet_form'), 'access callback' => TRUE, 'type' => MENU_CALLBACK, ); return $items; } /** * Form definition; ahah_helper_demo form. */ function custom_facet_form($form_state) { $form = array(); ahah_helper_register($form, $form_state); if (isset($form_state['storage']['categories'])) { $categories_default_value = $form_state['storage']['categories']["#value"]; } $form['facet_search_form'] = array( '#type' => 'fieldset', '#title' => t('Faceted Search'), '#prefix' => '<div id="billing-info-wrapper">', // This is our wrapper div. '#suffix' => '</div>', '#tree' => TRUE, // Don't forget to set #tree! ); $form['facet_search_form']['categories'] = array( '#type' => 'select', '#title' => t('Category'), '#options' => _custom_facet_taxonomy_query(1), '#multiple' => TRUE, '#default_value' => $categories_default_value, ); $form['save'] = array( '#type' => 'submit', '#value' => t('Save'), ); return $form; } /** * Validate callback for the form. */ function custom_facet_form_validate($form, &$form_state) { } /** * Submit callback for the form. */ function custom_facet_form_submit($form, &$form_state) { drupal_set_message('nothing done'); $form_state['storage']['categories'] = $form['facet_search_form']['categories']; // dpm($form_state); // There's a value returned in form_state['storage] within this function } /** * Implementation of hook_views_api(). */ function custom_facet_views_api() { return array( 'api' => 2, ); } function custom_facet_view_build(&$view) { dpm($form_state); // form_state['storage] remains NULL even though there's a value on previous submission }

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  • How fast are EC/2 nodes between each other?

    - by tesmar
    Hi, I am looking to setup Amazon EC/2 nodes on rails with Riak. I am looking to be able to sync the riak DBs and if the cluster gets a query, to be able to tell where the data lies and retrieve it quickly. In your opinion(s), is EC/2 fast enough between nodes to query a Riak DB, return the results, and get them back to the client in a timely manner? I am new to all of this, so please be kind :)

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  • get last insert id when using Activerecord

    - by pierr
    Hi, For Sqilte3 C API, I would use sqlite3_last_insert_rowid. How to get this id when using ActiveRecord after insert a new record? I use following way to insert a new record : Section.new |s| s.a = 1 s.b = 2 #I expected the return value of save to be the last_insert_id, but it is NOT s.save end

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  • Flex: How do you list private attributes of a class?

    - by mensonge
    Hi, I try to serialize objects with their private attributes, in Flex. The introspection API does not seem to allow it: "The describeType() method returns only public members. The method does not return private members of the caller's superclass or any other class where the caller is not an instance." Is there another way for an instance to know the name of its private members?

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  • Is it possible to merge two MySQL databases into one?

    - by Mike L.
    Lets say I have two MySQL databases with some complex table structures. Neither database has the same table name. Lets say these tables contain no rows (they do but I could truncate the tables, the data is not important right now, just testing stuff). Lets say I need these 2 databases merged into one. For instance: DB1: cities states DB2: index subindex posts I want to end up with a single DB that contains: cities states index subindex posts Is this possible?

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