Application.java 文件源码

private void createDb() {
    graphDb = new GraphDatabaseFactory().newEmbeddedDatabase(DB_PATH);
    registerShutdownHook(graphDb);

    try (Transaction tx = graphDb.beginTx()) {
        // Database operations go here

        firstNode = graphDb.createNode();
        firstNode.setProperty("message", "Hello, ");
        secondNode = graphDb.createNode();
        secondNode.setProperty("message", "World!");

        relationship = firstNode.createRelationshipTo(secondNode, RelTypes.KNOWS);
        relationship.setProperty("message", "brave Neo4j ");

        System.out.print(firstNode.getProperty("message"));
        System.out.print(relationship.getProperty("message"));
        System.out.print(secondNode.getProperty("message"));

        greeting = ((String) firstNode.getProperty("message")) + ((String) relationship.getProperty("message"))
                + ((String) secondNode.getProperty("message"));

        tx.success();
    }
}