Neo4j jdbc驱动程序中的数据库连接池

Question

In my application I'm using neo4j-community-2.3.0-M02 with neo4j-jdbc 2.3.2 . It creates large number of threads each should execute 3 or 4 cypher queries. To execute queries I use following method,

    private ResultSet executeCypher(String queryString) throws Exception {
    try {
        String restUrl = getPropertiesCache().getCofigProperty("neo4j_url");
        String driver = getPropertiesCache().getCofigProperty("neo4j_driver");
        String userName = getPropertiesCache().getCofigProperty("neo4j_user");
        String passWord = getPropertiesCache().getCofigProperty("neo4j_pwd");
        Class.forName(driver);
        try{
            Neo4jConnection connection = (Neo4jConnection) 
                    DriverManager.getConnection(restUrl, userName, passWord);
            try {
                PreparedStatement stmt = connection.prepareStatement(queryString);
                try{
                    ResultSet rs = (ResultSet) stmt.executeQuery(queryString);
                    stmt.close();
                    connection.close();
                    return rs;
                }catch (SQLException e){
                    e.printStackTrace();
                } catch (NullPointerException e1){
                    e1.printStackTrace();
                } catch (RuntimeException e2){
                    e2.printStackTrace();
                }
                if(!stmt.isClosed()){
                    stmt.close();
                }
            }catch (Exception e){
                e.printStackTrace();
            }
            if(!connection.isClosed()){
                connection.close();
            }
        }catch (Exception e){
            e.printStackTrace();
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}

Which means I'm creating db connection for each cypher query. I think it's very bad idea because when creating large number of connections most of them start to be timeout. I think db connection pooling will help on this case or is there any better idea regarding this than connection pool?

If connection pooling solve this issue, please give an example of how to create db connection pool using neo4j jdbc driver.

Answer 1

neo4j-jdbc 2.3X驱动程序使用REST API连接到数据库，基本上它们是使用Restlet API的http调用，因此在创建/关闭JDBC连接时不会打开或关闭连接。