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LUCENE-5880 - avoid NegativeArraySizeException in DocToDoubleVectorUtils 

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1617010 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Tommaso Teofili 2014-08-09 20:07:00 +00:00
parent 872bd9145c
commit 1b5afe0f26
2 changed files with 9 additions and 7 deletions
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2
lucene/classification/src/java/org/apache/lucene/classification/utils/DocToDoubleVectorUtils.java
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@ -41,7 +41,7 @@ public class DocToDoubleVectorUtils {
public static Double[] toSparseLocalFreqDoubleArray(Terms docTerms, Terms fieldTerms) throws IOException {
TermsEnum fieldTermsEnum = fieldTerms.iterator(null);
Double[] freqVector = null;
if (docTerms != null) {
if (docTerms != null && fieldTerms.size() > -1) {
freqVector = new Double[(int) fieldTerms.size()];
int i = 0;
TermsEnum docTermsEnum = docTerms.iterator(null);

14
lucene/classification/src/test/org/apache/lucene/classification/utils/DocToDoubleVectorUtilsTest.java
View File

@ -94,12 +94,14 @@ public class DocToDoubleVectorUtilsTest extends LuceneTestCase {
@Test
public void testSparseFreqDoubleArrayConversion() throws Exception {
Terms fieldTerms = MultiFields.getTerms(index, "text");
IndexSearcher indexSearcher = new IndexSearcher(index);
for (ScoreDoc scoreDoc : indexSearcher.search(new MatchAllDocsQuery(), Integer.MAX_VALUE).scoreDocs) {
Terms docTerms = index.getTermVector(scoreDoc.doc, "text");
Double[] vector = DocToDoubleVectorUtils.toSparseLocalFreqDoubleArray(docTerms, fieldTerms);
assertNotNull(vector);
assertTrue(vector.length > 0);
if (fieldTerms != null && fieldTerms.size() != -1) {
IndexSearcher indexSearcher = new IndexSearcher(index);
for (ScoreDoc scoreDoc : indexSearcher.search(new MatchAllDocsQuery(), Integer.MAX_VALUE).scoreDocs) {
Terms docTerms = index.getTermVector(scoreDoc.doc, "text");
Double[] vector = DocToDoubleVectorUtils.toSparseLocalFreqDoubleArray(docTerms, fieldTerms);
assertNotNull(vector);
assertTrue(vector.length > 0);
}
}
}
}