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package com.vaadin.data.util;
import java.util.Date;
import java.util.concurrent.atomic.AtomicLong;
import org.junit.Ignore;
@Ignore
public class BeanItemContainerGenerator {
public static class PortableRandom {
private final static long multiplier = 0x5DEECE66DL;
private final static long addend = 0xBL;
private final static long mask = (1L << 48) - 1;
private AtomicLong seed;
public PortableRandom(long seed) {
this.seed = new AtomicLong(0L);
setSeed(seed);
}
synchronized public void setSeed(long seed) {
seed = (seed ^ multiplier) & mask;
this.seed.set(seed);
}
public int nextInt(int n) {
if (n <= 0) {
throw new IllegalArgumentException("n must be positive");
}
if ((n & -n) == n) {
return (int) ((n * (long) next(31)) >> 31);
}
int bits, val;
do {
bits = next(31);
val = bits % n;
} while (bits - val + (n - 1) < 0);
return val;
}
protected int next(int bits) {
long oldseed, nextseed;
AtomicLong seed = this.seed;
do {
oldseed = seed.get();
nextseed = (oldseed * multiplier + addend) & mask;
} while (!seed.compareAndSet(oldseed, nextseed));
return (int) (nextseed >>> (48 - bits));
}
public boolean nextBoolean() {
return next(1) != 0;
}
}
public static BeanItemContainer<TestBean> createContainer(int size) {
return createContainer(size, new Date().getTime());
}
public static BeanItemContainer<TestBean> createContainer(int size,
long seed) {
BeanItemContainer<TestBean> container = new BeanItemContainer<TestBean>(
TestBean.class);
PortableRandom r = new PortableRandom(seed);
for (int i = 0; i < size; i++) {
container.addBean(new TestBean(r));
}
return container;
}
public static class TestBean {
private String name, address, city, country;
private int age, shoesize;
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public int getShoesize() {
return shoesize;
}
public void setShoesize(int shoesize) {
this.shoesize = shoesize;
}
public TestBean(PortableRandom r) {
age = r.nextInt(100) + 5;
shoesize = r.nextInt(10) + 35;
name = createRandomString(r, r.nextInt(5) + 5);
address = createRandomString(r, r.nextInt(15) + 5) + " "
+ r.nextInt(100) + 1;
city = createRandomString(r, r.nextInt(7) + 3);
if (r.nextBoolean()) {
country = createRandomString(r, r.nextInt(4) + 4);
}
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getCity() {
return city;
}
public void setCity(String city) {
this.city = city;
}
public String getCountry() {
return country;
}
public void setCountry(String country) {
this.country = country;
}
}
public static String createRandomString(PortableRandom r, int len) {
StringBuilder b = new StringBuilder();
for (int i = 0; i < len; i++) {
b.append((char) (r.nextInt('z' - 'a') + 'a'));
}
return b.toString();
}
}
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