@Test
public void _testAndIntersections() throws Exception {
System.out.println("Running test case: intersections, PForDeltaAndDocIdSet.nextDoc() ...");
ArrayList<OpenBitSet> obs = new ArrayList<OpenBitSet>();
ArrayList<DocIdSet> docs = new ArrayList<DocIdSet>();
ArrayList<Integer> expectedIntersectionResult = new ArrayList<Integer>();
int maxDoc = 5000;
int numDoc1 = 1000;
int numDoc2 = 2000;
int numDoc3 = 4000;
int[] originalInput = null;
int[] input1 = null;
int[] input2 = null;
int[] input3 = null;
originalInput = new int[maxDoc];
for (int i = 0; i < maxDoc; ++i) {
originalInput[i] = i;
}
// generate random numbers and add them into PForDeltaDocIdSets
input1 = generateRandomDataNew(originalInput, maxDoc, numDoc1);
loadRandomDataSets(input1, obs, docs, numDoc1);
input2 = generateRandomDataNew(originalInput, maxDoc, numDoc2);
loadRandomDataSets(input2, obs, docs, numDoc2);
input3 = generateRandomDataNew(originalInput, maxDoc, numDoc3);
loadRandomDataSets(input3, obs, docs, numDoc3);
// get the expected result
OpenBitSet base = obs.get(0);
for (int i = 1; i < obs.size(); ++i) {
base.intersect(obs.get(i));
}
for (int k = 0; k < base.size(); ++k) {
if (base.get(k)) expectedIntersectionResult.add(k);
}
// get the results from PForDeltaAndDocIdSet
ArrayList<Integer> intersectionResult = new ArrayList<Integer>();
AndDocIdSet ands = new AndDocIdSet(docs);
DocIdSetIterator iter = ands.iterator();
int docId = iter.nextDoc();
while (docId != DocIdSetIterator.NO_MORE_DOCS) {
intersectionResult.add(docId);
docId = iter.nextDoc();
}
if (!compareTwoLists(intersectionResult, expectedIntersectionResult)) {
System.out.println("The result for the new version does not match the expectation");
}
System.out.println("----------------completed---------------------------");
}
public void clear() {
bitset.clear(0, bitset.size());
}