Package org.duracloud.common.collection

Class WriteOnlyStringSet

java.lang.Object
org.duracloud.common.collection.WriteOnlyStringSet
public class WriteOnlyStringSet extends Object
This class gives you an efficient way to write to an in memory set-like structure of tens of millions of strings. The catch is that once you write the strings to the set, you can't retrieve them. However you can ask if the set contains any string. Additionally you can remove strings from the set as well as determine the set's size. An example use case: You're comparing two large sets (A and B) of objects both of which won't fit in memory. You want to be able to load A (each element of which can be reduced to a string value) into memory and then iterate over B, checking for existence in A (probably of a single property of each B element) before performing some further logic on that B element.
Author:
Daniel Bernstein Date: May 22, 2015

  • Constructor Details

    • WriteOnlyStringSet

      public WriteOnlyStringSet(int capacity)

  • Method Details

    • add

      public void add(String string)

    • checksumBytesToString

      public static String checksumBytesToString(byte[] digestBytes)
      Converts a message digest byte array into a String based on the hex values appearing in the array.

    • contains

      public boolean contains(String string)

    • size

      public int size()

    • remove

      public boolean remove(String string)
      Parameters:
      string -