Examples with MetaModelNamespace org.neo4j.meta.model.MetaModelNamespace used on opensource projects

Example 1 with MetaModelNamespace

use of org.neo4j.meta.model.MetaModelNamespace 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();
    }
}