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Replaced deprecated "RandomDataImpl" with "RandomDataGenerator". 

Added private constructor.


git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@1422123 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Gilles Sadowski 2012-12-14 22:12:34 +00:00
parent 1f7c434521
commit f235e1c1d0
1 changed files with 22 additions and 11 deletions
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33
src/main/java/org/apache/commons/math3/random/EmpiricalDistribution.java
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@ -134,14 +134,14 @@ public class EmpiricalDistribution extends AbstractRealDistribution {
/** upper bounds of subintervals in (0,1) "belonging" to the bins */
private double[] upperBounds = null;
/** RandomDataImpl instance to use in repeated calls to getNext() */
private final RandomDataImpl randomData;
/** RandomDataGenerator instance to use in repeated calls to getNext() */
private final RandomDataGenerator randomData;
/**
* Creates a new EmpiricalDistribution with the default bin count.
*/
public EmpiricalDistribution() {
this(DEFAULT_BIN_COUNT, new RandomDataImpl());
this(DEFAULT_BIN_COUNT);
}
/**
@ -150,7 +150,7 @@ public class EmpiricalDistribution extends AbstractRealDistribution {
* @param binCount number of bins
*/
public EmpiricalDistribution(int binCount) {
this(binCount, new RandomDataImpl());
this(binCount, new RandomDataGenerator());
}
/**
@ -162,9 +162,7 @@ public class EmpiricalDistribution extends AbstractRealDistribution {
* @since 3.0
*/
public EmpiricalDistribution(int binCount, RandomGenerator generator) {
this.binCount = binCount;
randomData = new RandomDataImpl(generator);
binStats = new ArrayList<SummaryStatistics>();
this(binCount, new RandomDataGenerator(generator));
}
/**
@ -189,9 +187,7 @@ public class EmpiricalDistribution extends AbstractRealDistribution {
*/
@Deprecated
public EmpiricalDistribution(int binCount, RandomDataImpl randomData) {
this.binCount = binCount;
this.randomData = randomData;
binStats = new ArrayList<SummaryStatistics>();
this(binCount, randomData.getDelegate());
}
/**
@ -207,7 +203,22 @@ public class EmpiricalDistribution extends AbstractRealDistribution {
this(DEFAULT_BIN_COUNT, randomData);
}
/**
/**
* Private constructor to allow lazy initialisation of the RNG contained
* in the {@link #randomData} instance variable.
*
* @param binCount number of bins
* @param randomData Random data generator.
*/
private EmpiricalDistribution(int binCount,
RandomDataGenerator randomData) {
super(null);
this.binCount = binCount;
this.randomData = randomData;
binStats = new ArrayList<SummaryStatistics>();
}
/**
* Computes the empirical distribution from the provided
* array of numbers.
*