Long2IntExact.java
1.12 KB
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package is2.data;
/**
* @author Bernd Bohnet, 01.09.2009
*
* Maps for the Hash Kernel the long values to the int values.
*/
final public class Long2IntExact implements Long2IntInterface {
static gnu.trove.TLongIntHashMap mapt = new gnu.trove.TLongIntHashMap();
static int cnt = 0;
public Long2IntExact() {
size = 115911564;
}
public Long2IntExact(int s) {
size = s;
}
/** Integer counter for long2int */
final private int size; // 0x03ffffff //0x07ffffff
/*
* (non-Javadoc)
*
* @see is2.sp09k9992.Long2IntIterface#size()
*/
@Override
public int size() {
return size;
}
/*
* (non-Javadoc)
*
* @see is2.sp09k9992.Long2IntIterface#start() has no meaning for this
* implementation
*/
final public void start() {
}
/*
* (non-Javadoc)
*
* @see is2.sp09k9992.Long2IntIterface#l2i(long)
*/
@Override
final public int l2i(long l) {
if (l < 0)
return -1;
int i = mapt.get(l);
if (i != 0)
return i;
if (i == 0 && cnt < size - 1) {
cnt++;
mapt.put(l, cnt);
return cnt;
}
return -1;
}
}