beschauer

= How to do projection in CQRS with event sourcing

http://stackoverflow.com/questions/4064067/event-sourcing-and-read-model-generation

• Question regards just one field
• chosen answer is pro, but comments with up votes are against

https://groups.google.com/forum/#!topic/dddcqrs/Xq1H2zJh3LU

• If the data you need is already part of the Aggregate publishing the event it is trivial to put that data in the event.

beschauer

object AccessLoggingFilter extends EssentialFilter with BodyParsers {
  val accessLogger = Logger("access")

  def apply(nextFilter: EssentialAction) = new EssentialAction {
    def apply(requestHeader: RequestHeader) = {

      var bodyStr = ""
      // Check the body
      val resultIteratee = requestHeader.contentType match {
        case Some("application/json") | Some("text/plain") | Some("application/x-www-form-urlencoded") => {

beschauer

private def generatePdf(implicit request: RequestHeader) = {
  val pdf = generator.createPDF()
  SimpleResult(
    header = ResponseHeader(200),
    body = Enumerator(pdf)).withHeaders(
      (CONTENT_DISPOSITION, "inline; filename=my.pdf"),
      (CONTENT_TYPE, "application/pdf")
    )
}

beschauer

= Birt Background Image =

Birt does not allow to embed background images into the report (at least it does not work: see http://www.birt-exchange.org/forum/index.php?/topic/25294-embedded-background-image/ )

But we can reference a 'Shared Resource'. The folder in which the report design lives is considered as 'Shared Resources'. Thus put the image next to the report design and just reference it by name.

beschauer

import com.typesafe.config.ConfigFactory
import sbt._
import Keys._
import play.Project._

object ApplicationBuild extends Build {

  val conf = ConfigFactory.parseFile(new File("conf/application.conf")).resolve()
  val appVersion = conf.getString("application.version")

beschauer

.directive('myDirective', [ ->
  restrict: 'EA'
  replace: true
  scope: {
    myProperty: '='
  }
  template: '<div></div>'
  link: (scope, element, attrs) ->
   # TODO logic
])

beschauer

import play.api.GlobalSettings
import play.api.Play.current
import play.api.mvc._


object Global extends WithFilters(LoggingFilter) {}

object LoggingFilter extends Filter {
  import play.api.Logger
  import play.api.libs.concurrent.Execution.Implicits._

beschauer

for {
  entity1 <- someService.callReturnsFuture
  entity2 <- someService.callReturnsAnotherFuture
  if accessAllowed(entity1)
  flag = helperToProduceFlag(entity2)
} yield process(entity1, entity2, flag)

beschauer

angular.module('selfservice.services', [])

  .factory( 'CommonRest', [ '$http', ($http) ->
    {
      countries :  ->
        promise = $http.get(baseUrl + "/stammdaten/countries")
    }
  ])