Package org.reldb.dbLogger

Class Flattener

java.lang.Object
org.reldb.dbLogger.Flattener
public class Flattener
extends java.lang.Object
Copy a hierarchy of Map, List, and scalar value containment -- e.g., an instance/container-instance hierarchy of nested containers, such as a JSON object, HTML DOM, etc. -- to a flat Map.

  • Constructor Summary

    Constructors
    Constructor Description
    Flattener()  

  • Method Summary

    Modifier and Type Method Description
    static void flatten​(java.lang.String attributeName, java.lang.Object value, java.util.Map<java.lang.String,​java.lang.Object> target)
    Flatten a datum named attributeName which may be a List, Map, or some scalar value to the target Map.
    static void flatten​(java.lang.String containerName, java.util.Map<?,​?> source, java.util.Map<java.lang.String,​java.lang.Object> target)
    Flatten a Map named containerName -- which may contain ListS, MapS, or scalar values -- to the target Map.
    static java.util.Map<java.lang.String,​java.lang.Object> flatten​(java.util.Map<?,​?> source)
    Flatten a Map -- which may contain ListS, MapS, or scalar values -- to a target Map.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • Flattener

      public Flattener()

  • Method Details

    • flatten

      public static void flatten​(java.lang.String attributeName, java.lang.Object value, java.util.Map<java.lang.String,​java.lang.Object> target)
      Flatten a datum named attributeName which may be a List, Map, or some scalar value to the target Map.
      Parameters:
      attributeName - The name of this attribute as its known in its parent container. Used to construct new attribute names.
      value - The List, Map to be flattened and stored, or the value to be stored, in the target.
      target - The Map to receive the flattened data.

    • flatten

      public static void flatten​(java.lang.String containerName, java.util.Map<?,​?> source, java.util.Map<java.lang.String,​java.lang.Object> target)
      Flatten a Map named containerName -- which may contain ListS, MapS, or scalar values -- to the target Map.
      Parameters:
      containerName - The name of the source Map as an attribute in its parent Map. Used to construct new attribute names.
      source - The Map to be flattened
      target - The Map to receive the flattened attributes

    • flatten

      public static java.util.Map<java.lang.String,​java.lang.Object> flatten​(java.util.Map<?,​?> source)
      Flatten a Map -- which may contain ListS, MapS, or scalar values -- to a target Map.
      Parameters:
      source - The Map to be flattened
      Returns:
      The flattened Map.