Find your data - using GraphDB capabilities in XPages applications - ICS.UG 2016
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This document discusses using graph databases capabilities in XPages applications. It provides an overview of graph databases, examples of companies using graph databases, and terminology used in graph databases. It also demonstrates how to model and implement graph data in XPages applications using the OpenNTF Domino API, including defining node interfaces, initializing the graph, and creating edges between nodes.
Find your data - using GraphDB capabilities in XPages applications - ICS.UG 2016
- 1. Find your data - using GraphDB capabilities in XPages applications www.ics.ug #icsug Find your data - using GraphDB capabilities in XPages applications Oliver Busse, We4IT GmbH
- 2. Find your data - using GraphDB capabilities in XPages applications www.ics.ug #icsug About me • Working for We4IT –Aveedo® Application Framework • „Bleeding Yellow“ since R4.5 • IBM Champion for ICS 2015 + 2016 • OpenNTF Member Director @zeromancer1972 @we4it
- 3. Find your data - using GraphDB capabilities in XPages applications www.ics.ug #icsug Agenda • What is GraphDB? • Terminology • Data Modelling & Implementation • Example
- 4. Find your data - using GraphDB capabilities in XPages applications www.ics.ug #icsug „Graphs“ http://whatis.techtarget.com/definition/graph-database
- 5. Find your data - using GraphDB capabilities in XPages applications www.ics.ug #icsug Graph DB A graph database, also called a graph-oriented database, is a type of NoSQL database that uses graph theory to store, map and query relationships. A graph database is essentially a collection of nodes and edges. Each node represents an entity (such as a person or business) and each edge represents a connection or relationship between two nodes. http://whatis.techtarget.com/definition/graph-database
- 6. Find your data - using GraphDB capabilities in XPages applications www.ics.ug #icsug Some Graph DBs & Frameworks • Neo4J • OrientDB • DEX • Tinkerpop • Apache Lucene / Solr
- 7. Find your data - using GraphDB capabilities in XPages applications www.ics.ug #icsug Who is using Graph DBs? • Amazon • Google • Facebook • …almost every application that offers something like – „related posts“ (blogs) – „others also bought this“ (shops) – collect relations and „likes“ – …
- 8. Find your data - using GraphDB capabilities in XPages applications www.ics.ug #icsug Graphs – Terminology • Vertices (Nodes/Elements) – Properties (Key-Value pairs) • Edges – Connections, Relations between Vertices • ElementStores – for us: NSF databases • MetaverseIDs (Domino related only) – Replica + UNID (hashed) – internal use only (don‘t care about them) – sometime refered to as „Coordinate“
- 9. Find your data - using GraphDB capabilities in XPages applications www.ics.ug #icsug Graph DB – in Domino? • Vertices and Edges are stored as Documents • The data container is a NSF • The ElementStore defines the filepath to the NSF • An ElementStore can hold different types of Vertices • Usually you create one ElementStore for each Vertice type • Graphs are transactional • Graph are a new part of the OpenNTF Domino API
- 10. Find your data - using GraphDB capabilities in XPages applications www.ics.ug #icsug Data Modelling & Implementation • Nodes are defined as Interfaces • Fields are defined as properties with Getter and Setter • Methods define how the Node can build Edges to other Vertices • Methods also return all Edges to a certain Vertice
- 11. Find your data - using GraphDB capabilities in XPages applications www.ics.ug #icsug Sample: Webshop, Customer Node @TypeValue("Customer") public interface Customer extends DVertexFrame { @Property("$$Key") public String getKey(); @Property("name") public String getName(); @Property("name") public void setName(String name); @AdjacencyUnique(label = "basket") public Iterable<ProductItem> getProducts(); @AdjacencyUnique(label = "basket") public ProductItem addProductItem(ProductItem item); @AdjacencyUnique(label = "basket") public void removeProductItem(ProductItem item); }
- 12. Find your data - using GraphDB capabilities in XPages applications www.ics.ug #icsug Init the Graph • Define the Element Store(s) • Add Element Store(s) to the Graph Configuration • Define the DFramedTransactionalGraph object with the Graph Configuration • Work with the Graph object
- 13. Find your data - using GraphDB capabilities in XPages applications www.ics.ug #icsug Init the Graph: code schema private DFramedTransactionalGraph<DGraph> initStores() { // create element store DElementStore myStore = new DElementStore(); myStore.setStoreKey(“folder/some.nsf”); myStore.addType(MyType.class); // register the stores to the graph DConfiguration config = new DConfiguration(); DGraph graph = new DGraph(config); config.addElementStore(myStore); config.setDefaultElementStore(myStore.getStoreKey()); // init the graph DFramedGraphFactory factory = new DFramedGraphFactory(config); DFramedTransactionalGraph<DGraph> fg = (DFramedTransactionalGraph<DGraph>) factory.create(graph); return fg; }
- 14. Find your data - using GraphDB capabilities in XPages applications www.ics.ug #icsug Create an Edge • Parameterize Object 1 • Get Object 2 by a unique key • Call one of the „add“ methods of your Node class • Commit your changes
- 15. Find your data - using GraphDB capabilities in XPages applications www.ics.ug #icsug Create an Edge: code schema public void addToBasket(ProductItem item) { String userName = Factory.getSession(SessionType.CURRENT).getEffectiveUserName(); try { DFramedTransactionalGraph<DGraph> graph = initStores(); Customer customer = graph.getElement(userName, Customer.class); customer.addProductItem(item); graph.commit(); } catch (Throwable e) { XspOpenLogUtil.logError(e); } }
- 16. Find your data - using GraphDB capabilities in XPages applications www.ics.ug #icsug Let‘s see the demo & some more code
- 17. Find your data - using GraphDB capabilities in XPages applications www.ics.ug #icsug Resources • The XPages demo application – https://bitbucket.org/zeromancer1972/sutol-2015-oda-graph-demo • A nice glossary – http://www.intec.co.uk/from-xpages-to-web-app-glossary/ • OpenNTF Domino API – http://www.openntf.org/main.nsf/project.xsp?r=project/OpenNTF%20Domino%20API – http://www.openntf.org/main.nsf/project.xsp?r=project/OpenNTF%20Domino%20API%20Demo%20Database • Xots – http://www.intec.co.uk/xots-background-and-multithreaded-tasks-the-openntf-domino-api-way-part-one/ – http://www.intec.co.uk/xots-background-and-multithreaded-tasks-the-openntf-domino-api-way-part-two/ – http://www.intec.co.uk/xots-background-and-multithreaded-tasks-the-openntf-domino-api-way-part-three/ • Graphs – http://de.slideshare.net/ktree19/the-graph-revolution
- 18. Find your data - using GraphDB capabilities in XPages applications www.ics.ug #icsug Q & A
- 19. Find your data - using GraphDB capabilities in XPages applications www.ics.ug #icsug