|
|
|
@ -347,28 +347,32 @@ public class SQLDatabaseWrangler implements DatabaseWrangler {
|
|
|
|
|
public static class RandomString {
|
|
|
|
|
|
|
|
|
|
private static final char[] symbols;
|
|
|
|
|
private static final char[] startingSymbols;
|
|
|
|
|
|
|
|
|
|
static {
|
|
|
|
|
StringBuilder tmp = new StringBuilder();
|
|
|
|
|
for (char ch = '0'; ch <= '9'; ++ch)
|
|
|
|
|
tmp.append(ch);
|
|
|
|
|
for (char ch = 'a'; ch <= 'z'; ++ch)
|
|
|
|
|
tmp.append(ch);
|
|
|
|
|
startingSymbols = tmp.toString().toCharArray();
|
|
|
|
|
for (char ch = '0'; ch <= '9'; ++ch)
|
|
|
|
|
tmp.append(ch);
|
|
|
|
|
symbols = tmp.toString().toCharArray();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private final int length;
|
|
|
|
|
|
|
|
|
|
private final Random random = new Random();
|
|
|
|
|
|
|
|
|
|
private final char[] buf;
|
|
|
|
|
|
|
|
|
|
public RandomString(int length) {
|
|
|
|
|
if (length < 1)
|
|
|
|
|
throw new IllegalArgumentException("length < 1: " + length);
|
|
|
|
|
buf = new char[length];
|
|
|
|
|
this.length = length;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
public String nextString() {
|
|
|
|
|
for (int idx = 0; idx < buf.length; ++idx)
|
|
|
|
|
public synchronized String nextString() {
|
|
|
|
|
char[] buf = new char[this.length];
|
|
|
|
|
buf[0] = startingSymbols[random.nextInt(startingSymbols.length)];
|
|
|
|
|
for (int idx = 1; idx < buf.length; ++idx)
|
|
|
|
|
buf[idx] = symbols[random.nextInt(symbols.length)];
|
|
|
|
|
return new String(buf);
|
|
|
|
|
}
|
|
|
|
|