Changeset 262 for trunk/docs/workshop/2010/introduction.txt
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trunk/docs/workshop/2010/introduction.txt
r256 r262 2 2 3 3 Introduction 4 ########## 4 ############ 5 5 6 6 .. contents:: Table of Contents … … 9 9 10 10 What is ZOO ? 11 ************* **11 ************* 12 12 13 13 ZOO is a WPS (Web Processing Service) open source project recently released under a `MIT/X-11 <http://zoo-project.org/trac/wiki/Licence>`__ style license. It provides an OGC WPS compliant developer-friendly framework to create and chain WPS Web services. ZOO is made of three parts: … … 17 17 - `ZOO API <http://zoo-project.org/trac/wiki/ZooWebSite/ZOOAPI/Introduction>`__ : A server-side JavaScript API able to call and chain the ZOO Services, which makes the development and chaining processes easier. 18 18 19 ZOO is designed to make the service development easier by providing a powerful system able to understand and execute WPS compliant queries. It supports several programming languages, thus allowing you to create Web Services in your favorite one and from an already existing code. Further information on the project is available on the `ZOO Project official website <http://www.zoo-project.org/>`__ . 19 ZOO is designed to make the service development easier by providing a powerful system 20 able to understand and execute WPS compliant queries. It supports several programming 21 languages, thus allowing you to create Web Services in your favorite one and from an 22 already existing code. Further information on the project is available on the 23 `ZOO Project official website <http://www.zoo-project.org/>`__ . 20 24 21 25 How does ZOO works ? 22 ******************** ****26 ******************** 23 27 24 ZOO is based on a 'WPS Service Kernel' which constitutes the ZOO's core system (aka ZOO Kernel). The latter is able to load dynamic libraries and to handle them as on-demand Web services. The ZOO Kernel is written in C language, but supports several common programming languages for creating ZOO Services. 28 ZOO is based on a 'WPS Service Kernel' which constitutes the ZOO's core system 29 (aka ZOO Kernel). The latter is able to load dynamic libraries and to handle them 30 as on-demand Web services. The ZOO Kernel is written in C language, but supports 31 several common programming languages for creating ZOO Services. 25 32 26 A ZOO Service is a link composed of a ZOO metadata file (.zcfg) and the code for the corresponding implementation. The metadata file describes all the available functions which can be called using a WPS Exec Request, as well as the desired input/output. Services contain the algorithms and functions, and can now be implemented in C/C++, Fortran, Java, Python, Perl, PHP and JavaScript. 33 A ZOO Service is a link composed of a ZOO metadata file (.zcfg) and the code for 34 the corresponding implementation. The metadata file describes all the available 35 functions which can be called using a WPS Exec Request, as well as the desired 36 input/output. Services contain the algorithms and functions, and can now be 37 implemented in C/C++, Fortran, Java, Python, Perl, PHP and JavaScript. 27 38 28 ZOO Kernel works with Apache and can communicate with cartographic engines and Web mapping clients. It simply adds the WPS support to your spatial data infrastructure and your Web mapping application. It can use every GDAL/OGR supported formats as input data and create suitable vector or raster output for your cartographic engine and/or your web-mapping client application. 39 ZOO Kernel works with Apache and can communicate with cartographic engines and 40 Web mapping clients. It simply adds the WPS support to your spatial data infrastructure 41 and your Web mapping application. It can use every GDAL/OGR supported formats as input 42 data and create suitable vector or raster output for your cartographic engine and/or 43 your web-mapping client application. 29 44 30 45 What are we going to do in this workshop? 31 ***************************************** ****46 ***************************************** 32 47 33 This workshop aims to present the ZOO Project and its features, and to explain its capabilities regarding the `OGC WPS 1.0.0 specification <http://www.opengeospatial.org/standards/wps>`__. The participants will learn in 3 hours how to use ZOO Kernel, how to create ZOO Services and their configuration files and finally how to link the created Service with a client-side webmapping application. A pre-compiled ZOO 1.0 version is provided inside OSGeoLive, the OSGeo official Live DVD. For the sack of simplicity, an OSGeoLive Virtual Machine image disk is already installed on your computers. This will be used during this workshop, so the participants won't have to compile and install ZOO Kernel manually. Running and testing ZOO Kernel from this OSGeoLive image disk is thus the first step of the workshop, and every participants should get a working ZOO Kernel in less than 30 minutes. 48 This workshop aims to present the ZOO Project and its features, and to explain its 49 capabilities regarding the `OGC WPS 1.0.0 specification <http://www.opengeospatial.org/standards/wps>`__. 50 The participants will learn in 3 hours how to use ZOO Kernel, how to create 51 ZOO Services and their configuration files and finally how to link the created 52 Service with a client-side webmapping application. A pre-compiled ZOO 1.0 version 53 is provided inside OSGeoLive, the OSGeo official Live DVD. For the sack of simplicity, 54 an OSGeoLive Virtual Machine image disk is already installed on your computers. 55 This will be used during this workshop, so the participants won't have to compile 56 and install ZOO Kernel manually. Running and testing ZOO Kernel from this OSGeoLive 57 image disk is thus the first step of the workshop, and every participants should 58 get a working ZOO Kernel in less than 30 minutes. 34 59 35 Once ZOO Kernel will be tested from a Web browser using GetCapabilities requests, participants will be invited to create an OGR based ZOO Service Provider aiming to enable simple spatial operations on vector data. Participants will first have to choose whether they will create the service using C or Python language. Every programming step of the ZOO Service Provider and the related Services will be each time detailed in C and Python. Once the ZOO Services will be ready and callable by ZOO Kernel, participants will finally learn how to use its different functions from an OpenLayers simple application. A sample dataset was providen by Orkney and included in the OSGeoLiveDVD, data are available trough OGC WMS/WFS WebServices using MapServer and will be displayed on a simple map and used as input data by the ZOO Services. Then, some specific selection and execution controls will be added in the JavaScript code in order to execute single and multiple geometries on the displayed polygons. 60 Once ZOO Kernel will be tested from a Web browser using GetCapabilities requests, 61 participants will be invited to create an OGR based ZOO Service Provider aiming to 62 enable simple spatial operations on vector data. Participants will first have to 63 choose whether they will create the service using C or Python language. Every programming 64 step of the ZOO Service Provider and the related Services will be each time detailed in 65 C and Python. Once the ZOO Services will be ready and callable by ZOO Kernel, participants 66 will finally learn how to use its different functions from an OpenLayers simple application. 67 A sample dataset was providen by Orkney and included in the OSGeoLiveDVD, data are 68 available trough OGC WMS/WFS WebServices using MapServer and will be displayed on a 69 simple map and used as input data by the ZOO Services. Then, some specific selection 70 and execution controls will be added in the JavaScript code in order to execute single 71 and multiple geometries on the displayed polygons. 36 72 37 Once again, the whole procedure will be organized step-by-step and detailed with numerous code snippets and their respective explanations. The instructors will check the ZOO Kernel functioning on each machine and will assist you while coding. Technical questions are of course welcome during the workshop. 73 Once again, the whole procedure will be organized step-by-step and detailed with 74 numerous code snippets and their respective explanations. The instructors will check 75 the ZOO Kernel functioning on each machine and will assist you while coding. Technical 76 questions are of course welcome during the workshop. 38 77 39 78 Usefull tips for reading :
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