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| <h1 class="title">TDB2 - Migration from TDB1</h1> |
| |
| <h3 id="migrating-data">Migrating Data</h3> |
| <p>TDB2 is not compatible with TDB1. Data must be reloaded from RDF again.</p> |
| <h3 id="migrating-code">Migrating Code</h3> |
| <p>Simple migration of code is to use <code>TDB2Factory</code> in place of TDBFactory to create |
| datasets. <code>DatasetGraph</code> objects are now created via <code>DatabaseMgr</code>.</p> |
| <p>Beware that many classes have the same name in TDB1 and TDB2 but are in |
| different packages. The base package name for TDB2 is <code>org.apache.jena.tdb2</code>.</p> |
| <p>Example code: <strong><code>TDB2Factory</code></strong></p> |
| <pre><code>import org.apache.jena.tdb2.TDB2Factory; |
| ... |
| |
| public static void main(String[] args) { |
| Dataset ds = TDB2Factory.createDataset() ; |
| Txn.execWrite(ds, ()->{ |
| RDFDataMgr.read(ds, "SomeData.ttl"); |
| }) ; |
| Txn.execRead(dsg, ()->{ |
| RDFDataMgr.write(System.out, ds, Lang.TRIG) ; |
| }) ; |
| } |
| </code></pre> |
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