JAVA ElasticSearch API Connector

In this article you will learn, how to integrate ElasticSearch data to JAVA without coding in few clicks (Live / Bi-directional connection to ElasticSearch). Read / write ElasticSearch data inside your app; perform many ElasticSearch operations without coding, just use easy to use high performance API Connector for ElasticSearch

Using ElasticSearch API Connector you will be able to connect, read and write data from within JAVA. Let's take a look at the steps below to see how exactly to accomplish that.

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Create Data Source in ZappySys Data Gateway based on ZappySys API Driver

  1. Download and install ZappySys ODBC PowerPack.

  2. Search for gateway in start menu and Open ZappySys Data Gateway:
    Open ZappySys Data Gateway

  3. Go to Users Tab to add our first Gateway user. Click Add; we will give it a name tdsuser and enter password you like to give. Check Admin option and click OK to save. We will use these details later when we create linked server:
    ZappySys Data Gateway - Add User

  4. Now we are ready to add a data source. Click Add, give data source a name (Copy this name somewhere, we will need it later) and then select Native - ZappySys API Driver. Finally, click OK.

    ElasticSearchDSN

    ZappySys Data Gateway - Add Data Source

  5. When a window appears, firstly give your data source a name if you haven't done that already, then select "ElasticSearch" from the list of Popular Connectors. If "ElasticSearch" is not present in the list, then click "Search Online" and download it. Then set the path to the one where you downloaded it. Finally, hit Continue >> button to continue configuring DSN:

    ElasticSearchDSN
    ElasticSearch
    ODBC DSN Template Selection

  6. Another window appears and it's time to configure the Connection Manager. Firstly, select Authentication Type, e.g. Token Authentication. Then select API Base URL (in most cases default one is the right one). More info is available in Authentication section.

    And finally, fill in all the required parameters and set optional parameters if needed.:

    ElasticSearchDSN
    ElasticSearch
    Default [Http]
    http://localhost:9200
    Required Parameters
    Optional Parameters
    UserName Fill in the parameter...
    Password Fill in the parameter...
    ODBC DSN HTTP Connection Configuration

  7. Once you configured a data source, you can preview data. Hit Preview tab, and use similar settings to preview data:
    ODBC ZappySys Data Source Preview

  8. Click OK to finish creating the data source

Read data in Java from the DSN

  1. Java code to get the data:

    "jdbc:sqlserver://localhost:5000;databasename=ElasticSearchDSN;user=tdsuser;password=test"
    Java code to Make ZappySys Driver Data Source Call

  2. When you run the code it will make the API call and read the data:
    Java code ZappySys Driver Data Source Results

  3. Here is Java program's code in text format:

    
        //Step-1: Install ZappySys ODBC PowerPack and Configure Data Gateway
    
        //Step-2:Assuming the Microsoft SQL Server Jdbc Driver is in below folder
        //C:\Program Files\Microsoft Jdbc Driver 6.0 for SQL Server\sqljdbc_6.0\enu\auth\x64
    
        package padaone;
    
        import java.sql.*;
    
        public class zappy {
    
        public static void main(String[] args) {
    
        // Create a variable for the connection string.
        String connectionUrl = "jdbc:sqlserver://localhost:5000;databasename=ElasticSearchDSN;user=test;password=test";
    
        // Declare the JDBC objects.
        Connection con = null;
        Statement stmt = null;
        ResultSet rs = null;
    
        try {
        // Establish the connection.
        Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
        con = DriverManager.getConnection(connectionUrl);
    
        // Create and execute an SQL statement that returns some data.
        String SQL = "SELECT Country , SUM(UnitPrice * Quantity) Total "
        + "FROM value "
        + "GROUP BY Country "
        + "WITH (SRC='https://services.odata.org/V3/Northwind/Northwind.svc/Invoices?$format=json')";
        stmt = con.createStatement();
        rs = stmt.executeQuery(SQL);
    
        // Iterate through the data in the result set and display it.
        while (rs.next()) {
        System.out.println(rs.getString(1) + " " + rs.getString(2));
        }
        }
    
        // Handle any errors that may have occurred.
        catch (Exception e) {
        e.printStackTrace();
        }
    
        finally {
        if (rs != null) try { rs.close(); } catch(Exception e) {}
        if (stmt != null) try { stmt.close(); } catch(Exception e) {}
        if (con != null) try { con.close(); } catch(Exception e) {}
        }
        }
        }
    
    

Create Custom Store Procedure in ZappySys Driver

You can create procedures to encapsulate custom logic and then only pass handful parameters rather than long SQL to execute your API call.

Steps to create Custom Store Procedure in ZappySys Driver. You can insert Placeholders anywhere inside Procedure Body. Read more about placeholders here

  1. Go to Custom Objects Tab and Click on Add button and Select Add Procedure:
    ZappySys Driver - Add Store Procedure

  2. Enter the desired Procedure name and click on OK:
    ZappySys Driver - Add Store Procedure Name

  3. Select the created Store Procedure and write the your desired store procedure and Save it and it will create the custom store procedure in the ZappySys Driver:
    Here is an example stored procedure for ZappySys Driver. You can insert Placeholders anywhere inside Procedure Body. Read more about placeholders here

    CREATE PROCEDURE [usp_get_orders]
    @fromdate = '<<yyyy-MM-dd,FUN_TODAY>>'
    AS
    SELECT * FROM Orders where OrderDate >= '<@fromdate>'

    ZappySys Driver - Create Custom Store Procedure

  4. That's it now go to Preview Tab and Execute your Store Procedure using Exec Command. In this example it will extract the orders from the date 1996-01-01:

    Exec usp_get_orders '1996-01-01'

    ZappySys Driver - Execute Custom Store Procedure

Create Custom Virtual Table in ZappySys Driver

ZappySys API Drivers support flexible Query language so you can override Default Properties you configured on Data Source such as URL, Body. This way you dont have to create multiple Data Sources if you like to read data from multiple EndPoints. However not every application support supplying custom SQL to driver so you can only select Table from list returned from driver.

Many applications like MS Access, Informatica Designer wont give you option to specify custom SQL when you import Objects. In such case Virtual Table is very useful. You can create many Virtual Tables on the same Data Source (e.g. If you have 50 URLs with slight variations you can create virtual tables with just URL as Parameter setting.

  1. Go to Custom Objects Tab and Click on Add button and Select Add Table:
    ZappySys Driver - Add Table

  2. Enter the desired Table name and click on OK:
    ZappySys Driver - Add Table Name

  3. And it will open the New Query Window Click on Cancel to close that window and go to Custom Objects Tab.

  4. Select the created table, Select Text Type AS SQL and write the your desired SQL Query and Save it and it will create the custom table in the ZappySys Driver:
    Here is an example SQL query for ZappySys Driver. You can insert Placeholders also. Read more about placeholders here

    SELECT
    "ShipCountry",
    "OrderID",
    "CustomerID",
    "EmployeeID",
    "OrderDate",
    "RequiredDate",
    "ShippedDate",
    "ShipVia",
    "Freight",
    "ShipName",
    "ShipAddress",
    "ShipCity",
    "ShipRegion",
    "ShipPostalCode"
    FROM "Orders"
    Where "ShipCountry"='USA'

    ZappySys Driver - Create Custom Table

  5. That's it now go to Preview Tab and Execute your custom virtual table query. In this example it will extract the orders for the USA Shipping Country only:

    SELECT * FROM "vt__usa_orders_only"

    ZappySys Driver - Execute Custom Virtual Table Query

Conclusion

In this article we discussed how to connect to ElasticSearch in JAVA and integrate data without any coding. Click here to Download ElasticSearch Connector for JAVA and try yourself see how easy it is. If you still have any question(s) then ask here or simply click on live chat icon below and ask our expert (see bottom-right corner of this page).

Documentation 

Other App Integration scenarios for ElasticSearch

Other API Connectors for JAVA


Documentation 

  • How to connect ElasticSearch in JAVA?

  • How to get ElasticSearch data in JAVA?

  • How to read ElasticSearch data in JAVA?

  • How to load ElasticSearch data in JAVA?

  • How to import ElasticSearch data in JAVA?

  • How to pull ElasticSearch data in JAVA?

  • How to push data to ElasticSearch in JAVA?

  • How to write data to ElasticSearch in JAVA?

  • How to POST data to ElasticSearch in JAVA?

  • Call ElasticSearch API in JAVA

  • Consume ElasticSearch API in JAVA

  • ElasticSearch JAVA Automate

  • ElasticSearch JAVA Integration

  • Integration ElasticSearch in JAVA

  • Consume real-time ElasticSearch data in JAVA

  • Consume realtime ElasticSearch API data in JAVA

  • ElasticSearch ODBC Driver | ODBC Driver for ElasticSearch | ODBC ElasticSearch Driver | SSIS ElasticSearch Source | SSIS ElasticSearch Destination

  • Connect ElasticSearch in JAVA

  • Load ElasticSearch in JAVA

  • Load ElasticSearch data in JAVA

  • Read ElasticSearch data in JAVA

  • ElasticSearch API Call in JAVA