OGC SOS for Your Data
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The document discusses how to publish existing sensor data utilizing the 52°North SOS open source software, which complies with OGC standards. It explains various data access patterns and implementations, including DAO patterns and integration with existing sensor networks. Additionally, it provides resources for further information and examples of current SOS development versions.
OGC SOS for Your Data
- 1. 52°North SOS for My Data and as a Proxy Increasing your data’s interoperability with an OGC standard conform open source Sensor Observation Service Simon Jirka & Daniel Nüst 52°North GmbH
- 2. Contents How can you publish existing sensor data with a standard conform OGC Sensor Observation Service (SOS) using the 52°North SOS open source software? SOS Data Access Patterns
- 3. SOS Application Patterns Standalone SOS – Import data via feeding • Transactional interface (e.g. with SOS Importer: https://wiki.52north.org/bin/view/SensorWeb/SosImporter) • Insertion to database (install clean SOS, complex schema to follow) – Sensors support SWE (Sensor Bus, InsertResult, SIDs) SOS as a Proxy – Connect to an existing (proprietary) database, web service interface, … – Existing sensor network (legacy hardware/software) – SOS = Interoperability Layer SOS Data Access Patterns
- 4. SOS 3.5 Java Implementation Current stable development version Code: https://svn.52north.org/cgi- bin/viewvc.cgi/main/SOS/Service/trunk/SOS/52n- sos/?root=sensorweb DAO Pattern • Data Access Objects (J2EE) • Database/data source/persistence abstraction layer (service interface) SOS Data Access Patterns
- 5. DAO Advantages Separation of Concerns – Independent development of components – Encapsulation (of changes) – Reusability – Single point of change for Object < > Database data exchange SOS Data Access Patterns
- 6. DAO Implementation Interfaces – 52n-sos-core > org.n52.sos.ds PostgreSQL/PostGIS Implementation – 52n-sos-dao-postgis Configuration – 52n-sos > build.properties • 52n-sos-service > pom.xml, sos.config Code: https://svn.52north.org/svn/swe/main/SOS/Service/trunk/SOS/52n-sos SOS Data Access Patterns
- 7. DAO Interfaces Interfaces to be implemented depend on use case. SOS Data Access Patterns
- 8. DAO Configuration Set your factory implementation in the build.properites file and add the combiled class to the build path (e.g. WEB-INFlib directory. SOS Data Access Patterns
- 9. DAO Implementation Example: PostGIS SOS Data Access Patterns
- 10. DAO Implementation: SOAP Service BAW – SOS PegelOnline SOAP Service http://www.pegelonline.wsv.de/webservice/ueberblick Code: https://svn.52north.org/svn/swe/main/SOS/Extensions/BAW/ Documentation (recommended): https://svn.52north.org/svn/swe/main/SOS/Extensions/BAW/trunk/P egelOnlineSOS/doc/howto/PegelOnline_SOS%20Installation.pdf SOS Data Access Patterns
- 11. SOAP Service (cont.) 52n-sos-dao-pegelonline SOS Data Access Patterns
- 12. SOS 4.0 Current development version, uses Hibernate Much more modularized and flexible – 52n-sos-api – 52n-sos-hibernate-{core, enhanced, resultHandling, transactional} – Based on Service Loader http://docs.oracle.com/javase/7/docs/api/java/util/ServiceLoader.html Code: https://svn.52north.org/svn/swe/main/SOS/Service/branches/52n- sos-400-refactored/ SOS Data Access Patterns
- 13. SOS 4.0 Implementation SOS Data Access Patterns
- 14. SOS 4.0 Implementation (cont.) SOS Data Access Patterns
- 15. More information: http://52north.org/sensorweb s.jirka@52north.org d.nuest@52north.org SOS Data Access Patterns