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v4.5
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    English
    v4.5

      Algorithm Management

      This section introduces methods on a Connection object for managing Ultipa graph algorithms and custom algorithms (EXTA) in the instance.

      Each example focuses solely on the method's usage. For a complete code example, please refer to the full example.

      Ultipa Graph Algorithms

      showAlgo()

      Retrieves all Ultipa graph algorithms installed in the instance.

      Parameters:

      • RequestConfig (Optional): Configuration settings for the request.

      Returns:

      • List<Algo>: The list of all algorithms retrieved.

      // Retrieves all Ultipa graph algorithms installed and prints the information of the first returned one
      
      List<Algo> algos = client.showAlgo();
      System.out.println(algos.get(0).toString());
      

      Algo(name=louvain, desc={"name":"louvain","description":"louvain","version":"1.0.4","parameters":{"edge_schema_property":"optinal,default 1 for each edge if absent","phase1_loop_num":"size_t,required","min_modularity_increase":"float,required","limit":"optional,-1 for all results, >=0 partial results","order":"optional, asc or desc, case_unsensitive, only work for 'community:id/count' mode"},"write_to_db_parameters":{"property":"set write back property name for each schema and nodes"},"write_to_file_parameters":{"filename1":"id1:community","filename2":"community1: id1,id2...","filename3":"community1: count"},"write_to_stats_parameters":{"enable":"0:no stats, 1:enable stats(count of communities)"},"write_to_client_normal_parameters":{"mode":"1:<id1:community>   2:<community1:count>"},"write_to_client_stream_parameters":{"mode":"1:<id1:community>   2:<community1:count>"},"result_opt":"59"}, version=null, params=null)
      

      installAlgo()

      Installs an Ultipa graph algorithm in the instance.

      Parameters:

      • String: File path of the algo installation package (.so).
      • String: File path of the configuration file (.yml).
      • RequestConfig (Optional): Configuration settings for the request.

      Returns:

      • Response: Result of the request.

      // Installs the algorithm LPA and uses the leader node to guarantee consistency, and prints the error code
      // The installation package libplugin_lpa.so and the config file lpa.yml are placed under the 'classpath' of current project (./src/main/resources)
      
      RequestConfig requestConfig = new RequestConfig();
      requestConfig.setUseMaster(true);
      
      Response response = client.installAlgo("algo/libplugin_lpa.so", "algo/lpa.yml");
      System.out.println(response.getStatus().getErrorCode());
      

      SUCCESS
      

      uninstallAlgo()

      Uninstalls an Ultipa graph algorithm in the instance.

      Parameters:

      • String: Name of the algorithm.
      • RequestConfig (Optional): Configuration settings for the request.

      Returns:

      • Response: Result of the request.

      // Uninstalls the algorithm LPA and prints the error code
      
      Response response = client.uninstallAlgo("lpa");
      System.out.println(response.getStatus().getErrorCode());
      

      SUCCESS
      

      EXTA

      showExta()

      Retrieves all extas installed in the instance.

      Parameters:

      • RequestConfig (Optional): Configuration settings for the request.

      Returns:

      • List<Exta>: The list of all extas retrieved.

      // Retrieves all extas installed and prints the information of the first returned one
      
      List<Exta> extas = client.showExta();
      System.out.println(extas.get(0).toString());
      

      Exta(name=page_rank, author=wuchuang, version=beta.4.4.41-b4.4.0-tv-ui, detail=base:
        category: ExtaExample
        cn:
          name: page_rank
          desc: null
        en:
          name: page_rank
          desc: null
      
      other_param:
      
          
      param_form:
      
      write:
      
      return:
      
      media:
      )
      

      installExta()

      Installs an exta in the instance.

      Parameters:

      • String: File path of the exta installation package (.so).
      • String: File path of the configuration file (.yml).
      • RequestConfig (Optional): Configuration settings for the request.

      Returns:

      • Response: Result of the request.

      // Installs the exta page_rank and uses the leader node to guarantee consistency, and prints the error code
      // The installation package libexta_page_rank.so and the config file page_rank.yml are placed under the 'classpath' of current project (./src/main/resources)
      
      RequestConfig requestConfig = new RequestConfig();
      requestConfig.setUseMaster(true);
      
      Response response = client.installExta("algo/libexta_page_rank.so", "algo/page_rank.yml", requestConfig);
      System.out.println(response.getStatus().getErrorCode());
      

      SUCCESS
      

      uninstallExta()

      Uninstalls an exta in the instance.

      Parameters:

      • String: Name of the exta.
      • RequestConfig (Optional): Configuration settings for the request.

      Returns:

      • Response: Result of the request.

      // Uninstalls the exta page_rank and prints the error code
      
      Response response = client.uninstallExta("page_rank");
      System.out.println(response.getStatus().getErrorCode());
      

      SUCCESS
      

      Full Example

      package com.ultipa.www.sdk.api;
      
      import com.ultipa.sdk.connect.Connection;
      import com.ultipa.sdk.connect.conf.RequestConfig;
      import com.ultipa.sdk.connect.conf.UltipaConfiguration;
      import com.ultipa.sdk.connect.driver.UltipaClientDriver;
      import com.ultipa.sdk.operate.response.Response;
      
      public class Main {
          public static void main(String[] args) {
              // Connection configurations
              UltipaConfiguration myConfig = UltipaConfiguration.config()
                  // URI example: .hosts("mqj4zouys.us-east-1.cloud.ultipa.com:60010")
                  .hosts("192.168.1.85:60611,192.168.1.87:60611,192.168.1.88:60611")
                  .username("<username>")
                  .password("<password>");
      
              UltipaClientDriver driver = null;
              try {
                  // Establishes connection to the database
                  driver = new UltipaClientDriver(myConfig);
                  Connection client = driver.getConnection();
      
                  Thread.sleep(3000);
                
                  // Request configurations: uses the leader node to guarantee consistency
                  RequestConfig requestConfig = new RequestConfig();
                  requestConfig.setUseMaster(true);
      
                  // Installs the algorithm LPA: the installation package libplugin_lpa.so and the config file lpa.yml are placed under the 'classpath' of current project (./src/main/resources)
                  Response response = client.installAlgo("algo/libplugin_lpa.so", "algo/lpa.yml");
                  System.out.println(response.getStatus().getErrorCode());
              } catch (InterruptedException e) {
                  throw new RuntimeException(e);
              } finally {
                  if (driver != null) {
                      driver.close();
                  }
              }
          }
      }
      
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