package org.apache.lucene.codecs.memory;
import java.io.IOException;
import org.apache.lucene.index.SortedNumericDocValues;
@Deprecated
final class LegacySortedNumericDocValuesWrapper extends SortedNumericDocValues {
private final LegacySortedNumericDocValues values;
private final int maxDoc;
private int docID = -1;
private int upto;
public LegacySortedNumericDocValuesWrapper(LegacySortedNumericDocValues values, int maxDoc) {
this.values = values;
this.maxDoc = maxDoc;
}
@Override
public int docID() {
return docID;
}
@Override
public int nextDoc() {
assert docID != NO_MORE_DOCS;
while (true) {
docID++;
if (docID == maxDoc) {
docID = NO_MORE_DOCS;
break;
}
values.setDocument(docID);
if (values.count() != 0) {
break;
}
}
upto = 0;
return docID;
}
@Override
public int advance(int target) {
if (target < docID) {
throw new IllegalArgumentException("cannot advance backwards: docID=" + docID + " target=" + target);
}
if (target >= maxDoc) {
docID = NO_MORE_DOCS;
} else {
docID = target-1;
nextDoc();
}
return docID;
}
@Override
public boolean advanceExact(int target) throws IOException {
docID = target;
values.setDocument(docID);
upto = 0;
return values.count() != 0;
}
@Override
public long cost() {
return 0;
}
@Override
public long nextValue() {
return values.valueAt(upto++);
}
@Override
public int docValueCount() {
return values.count();
}
}