Search in sources :

Example 1 with MetaModelProperty

use of org.neo4j.meta.model.MetaModelProperty in project graphdb by neo4j-attic.

the class MetastructureTest method shouldCreateMetaModel.

/**
     * A simple test to exercise the meta-model api.
     */
@Test
public void shouldCreateMetaModel() {
    IndexService index = new LuceneIndexService(neo4j);
    MetaModel meta = new MetaModelImpl(neo4j, index);
    Transaction tx = neo4j.beginTx();
    try {
        MetaModelNamespace namespace = meta.getGlobalNamespace();
        // Create a class, use ", true" for "create it if it doesn't exist".
        MetaModelClass personClass = namespace.getMetaClass("http://metaexample.org/meta#Person", true);
        // Create a property in a similar way.
        MetaModelProperty nameProperty = namespace.getMetaProperty("http://metaexample.org/meta#name", true);
        // Tell the meta model that persons can have name properties.
        personClass.getDirectProperties().add(nameProperty);
        tx.success();
    } catch (Exception e) {
        tx.failure();
    } finally {
        tx.finish();
    }
}
Also used : MetaModelNamespace(org.neo4j.meta.model.MetaModelNamespace) MetaModel(org.neo4j.meta.model.MetaModel) Transaction(org.neo4j.graphdb.Transaction) LuceneIndexService(org.neo4j.index.lucene.LuceneIndexService) IndexService(org.neo4j.index.IndexService) MetaModelProperty(org.neo4j.meta.model.MetaModelProperty) LuceneIndexService(org.neo4j.index.lucene.LuceneIndexService) MetaModelImpl(org.neo4j.meta.model.MetaModelImpl) MetaModelClass(org.neo4j.meta.model.MetaModelClass) Test(org.junit.Test)

Aggregations

Test (org.junit.Test)1 Transaction (org.neo4j.graphdb.Transaction)1 IndexService (org.neo4j.index.IndexService)1 LuceneIndexService (org.neo4j.index.lucene.LuceneIndexService)1 MetaModel (org.neo4j.meta.model.MetaModel)1 MetaModelClass (org.neo4j.meta.model.MetaModelClass)1 MetaModelImpl (org.neo4j.meta.model.MetaModelImpl)1 MetaModelNamespace (org.neo4j.meta.model.MetaModelNamespace)1 MetaModelProperty (org.neo4j.meta.model.MetaModelProperty)1