Example usage for org.apache.commons.text RandomStringGenerator generate

Introduction

In this page you can find the example usage for org.apache.commons.text RandomStringGenerator generate.

Prototype

public String generate(final int length) 

Source Link

Document

Generates a random string, containing the specified number of code points.

Usage

From source file:org.trellisldp.test.CommonTests.java

/**
 * Get a randomized Slug header with an appropriate suffix.
 * @param suffix the suffix//from w  w  w  .  j  av  a2  s. c om
 * @return a randomized header name
 */
default String generateRandomValue(final String suffix) {
    final RandomStringGenerator generator = new RandomStringGenerator.Builder().withinRange('a', 'z').build();
    return generator.generate(16) + "-" + suffix;
}

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From source file:tech.tablesaw.filters.SearchPerformanceTest.java

private static void generateData(int observationCount, LocalDateTime dateTime, Table table) {
    // createFromCsv pools of random values

    RandomStringGenerator generator = new RandomStringGenerator.Builder().withinRange(32, 127).build();

    while (concepts.size() <= CONCEPT_COUNT) {
        concepts.add(generator.generate(30));
    }/*from  ww w  . j  a  v  a2s  .co  m*/

    while (dates.size() <= numberOfRecordsInTable) {
        dates.add(PackedLocalDateTime.pack(dateTime.plusMinutes(1)));
    }

    DateTimeColumn dateColumn = table.dateTimeColumn("date");
    StringColumn conceptColumn = table.stringColumn("concept");
    DoubleColumn lowValues = table.doubleColumn("lowValue");
    DoubleColumn highValues = table.doubleColumn("highValue");

    // sample from the pools to write the data
    for (int i = 0; i < observationCount; i++) {
        dateColumn.appendInternal(dates.getLong(i));
        conceptColumn.append(concepts.get(RandomUtils.nextInt(0, concepts.size())));
        lowValues.append(RandomUtils.nextDouble(0, 1_000_000));
        highValues.append(RandomUtils.nextDouble(0, 1_000_000));
    }
}

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From source file:tech.tablesaw.filters.TimeDependentFilteringTest.java

private static void generateData(int observationCount, Table table) {
    // createFromCsv pools of random values

    RandomStringGenerator generator = new RandomStringGenerator.Builder().withinRange(32, 127).build();
    while (concepts.size() <= CONCEPT_COUNT) {
        concepts.add(generator.generate(30));
    }/*  ww  w  .  j a v  a 2  s  .  c  om*/

    while (patientIds.size() <= PATIENT_COUNT) {
        patientIds.add(RandomUtils.nextInt(0, 2_000_000_000));
    }

    while (dates.size() <= size) {
        dates.add(PackedLocalDate.pack(randomDate()));
    }

    DateColumn dateColumn = table.dateColumn("date");
    StringColumn conceptColumn = table.stringColumn("concept");
    DoubleColumn valueColumn = table.doubleColumn("value");
    DoubleColumn patientColumn = table.doubleColumn("patient");

    // sample from the pools to write the data
    for (int i = 0; i < observationCount; i++) {
        dateColumn.appendInternal(dates.getInt(RandomUtils.nextInt(0, dates.size())));
        conceptColumn.append(concepts.get(RandomUtils.nextInt(0, concepts.size())));
        valueColumn.append(RandomUtils.nextDouble(0f, 100_000f));
        patientColumn.append(patientIds.getInt(RandomUtils.nextInt(0, patientIds.size())));
    }
}

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