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| -rw-r--r-- | doc/introduction.tex | 85 |
1 files changed, 77 insertions, 8 deletions
diff --git a/doc/introduction.tex b/doc/introduction.tex index 51487b5..23394ca 100644 --- a/doc/introduction.tex +++ b/doc/introduction.tex @@ -4,9 +4,12 @@ \usepackage{minted} \usepackage{graphicx} \usepackage{hyperref} +\usepackage[english]{babel} + \hypersetup{urlcolor=red,colorlinks} \definecolor{bg}{rgb}{0.95,0.95,0.95} \newminted{xml}{fontsize=\tiny} +\newminted{javascript}{fontsize=\tiny} \usetheme{Warsaw} \title[OSM-Projekt - What is...]{OSM-Projekt - An introduction into OpenStreetMap} \author{Philipp Borgers} @@ -18,6 +21,12 @@ \end{frame} \begin{frame}{Introduction} + \begin{itemize} + \item Huge database of geo data + \item Open Data, licenced under cc (ODbL?) + \item Everybody can contribute, it's like an wiki + \end{itemize} + \end{frame} \begin{frame}[fragile] @@ -100,18 +109,39 @@ \end{itemize} \end{frame} \begin{frame}[fragile] - \frametitle{database - overview} + \frametitle{database - schema (tables)} \begin{itemize} - \item bla + \item nodes + \item ways + \item relations + \item users + \item way\_nodes + \item relation\_members \end{itemize} \end{frame} + +\begin{frame}[fragile] + \frametitle{database - nodes table} + \begin{tabular}{| l | c | r |} + \hline + id & bigint & not null \\ \hline + version & integer & not null \\ \hline + user\_id & integer & not null \\ \hline + tstamp & timestamp without time zone & not null \\ \hline + changeset\_id & bigint & not null \\ \hline + tags & hstore & \\ \hline + geom & geometry & \\ \hline + \end{tabular} +\end{frame} + \begin{frame}[fragile] \frametitle{XAPI} \begin{itemize} - \item Database frontend to retrieve node, ways and relations + \item Database frontend used to retrieve node, ways and relations \item XPATH like requests \item Returns xml (osm xml schema) \item \href{http://wiki.openstreetmap.org/wiki/Xapi}{Wiki page} + \item OSM community needs a good implementation \end{itemize} \end{frame} \begin{frame}[fragile] @@ -133,6 +163,42 @@ \end{itemize} \end{frame} +\begin{frame}[fragile] + \frametitle{node.js} + \begin{itemize} + \item \href{http://nodejs.org/}{node.js} is asynchronous javascript + \item Event based + \item Written on top of the \href{http://code.google.com/p/v8/}{V8 Javascript Engine} (Virtual machine) + \end{itemize} +\end{frame} + +\begin{frame}[fragile] + \frametitle{Simple example - echo server} + \begin{javascriptcode} + var net = require('net'); + + var server = net.createServer(function (socket) { + socket.write("Echo server\r\n"); + socket.pipe(socket); + }); + + server.listen(8124, "127.0.0.1"); + \end{javascriptcode} +\end{frame} + +\begin{frame}[fragile] + \frametitle{Simple example - event} + Listen for events + \begin{javascriptcode} + server.on('connection', function(stream) { + console.log('someone connected!'); + }); + \end{javascriptcode} + Emit events + \begin{javascriptcode} + server.emit('connection',socket); + \end{javascriptcode} +\end{frame} \begin{frame}[fragile] \frametitle{Licence} @@ -144,10 +210,13 @@ \end{center} \end{frame} - - - - - +\begin{frame}[fragile] + \frametitle{more} + \begin{itemize} + \item \url{https://github.com/slomo/osm-spline-xapi} + \item \href{https://lists.spline.inf.fu-berlin.de/mailman/listinfo/xapi}{XAPI (course) mailinglist} + \item \url{http://osm.spline.de} + \end{itemize} +\end{frame} \end{document} |