foam.dao.index.LRUCachingIndexTest.java Source code

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Here is the source code for foam.dao.index.LRUCachingIndexTest.java

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/**
 * @license
 * Copyright 2017 The FOAM Authors. All Rights Reserved.
 * http://www.apache.org/licenses/LICENSE-2.0
 */

package foam.dao.index;

import foam.nanos.auth.Country;
import org.apache.commons.text.RandomStringGenerator;

import java.io.IOException;

import static org.apache.commons.text.CharacterPredicates.DIGITS;
import static org.apache.commons.text.CharacterPredicates.LETTERS;

public class LRUCachingIndexTest {

    protected static final int SAMPLE_SIZE = 1000000;
    protected static Object[] wrapped = new Object[SAMPLE_SIZE];
    protected static String[] samples = new String[SAMPLE_SIZE];
    protected static RandomStringGenerator generator = new RandomStringGenerator.Builder().withinRange('0', 'z')
            .filteredBy(LETTERS, DIGITS).build();

    public static void main(String[] args) throws IOException {
        long startTotal;
        long endTotal;

        long start;
        long end;
        long duration;

        // generate random strings of length 50
        for (int i = 0; i < SAMPLE_SIZE; i++) {
            samples[i] = generator.generate(50);
        }

        LRUCachingIndex index = new LRUCachingIndex(1000000,
                new PersistedIndex("test", new TreeIndex(Country.CODE)));
        startTotal = start = System.nanoTime();

        for (int i = 0; i < SAMPLE_SIZE; i++) {
            wrapped[i] = index.wrap(samples[i]);
        }

        end = System.nanoTime();
        duration = (end - start);
        System.out.println("Wrapping took: " + (((double) duration) / 1000000000.0) + " seconds");

        start = System.nanoTime();

        for (int i = 0; i < SAMPLE_SIZE; i++) {
            index.unwrap(wrapped[i]);
        }

        endTotal = end = System.nanoTime();
        duration = (end - start);
        System.out.println("Unwrapping took: " + (((double) duration) / 1000000000.0) + " seconds");
        duration = (endTotal - startTotal);
        System.out.println("Total duration: " + (((double) duration) / 1000000000.0) + " seconds");
    }
}