X-Git-Url: https://git.mdrn.pl/pylucene.git/blobdiff_plain/a2e61f0c04805cfcb8706176758d1283c7e3a55c..aaeed5504b982cf3545252ab528713250aa33eed:/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/search/ReqExclScorer.java?ds=sidebyside
diff --git a/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/search/ReqExclScorer.java b/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/search/ReqExclScorer.java
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+++ b/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/search/ReqExclScorer.java
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+package org.apache.lucene.search;
+
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import java.io.IOException;
+
+
+/** A Scorer for queries with a required subscorer
+ * and an excluding (prohibited) sub DocIdSetIterator.
+ *
+ * This Scorer
implements {@link Scorer#skipTo(int)},
+ * and it uses the skipTo() on the given scorers.
+ */
+class ReqExclScorer extends Scorer {
+ private Scorer reqScorer;
+ private DocIdSetIterator exclDisi;
+ private int doc = -1;
+
+ /** Construct a ReqExclScorer
.
+ * @param reqScorer The scorer that must match, except where
+ * @param exclDisi indicates exclusion.
+ */
+ public ReqExclScorer(Scorer reqScorer, DocIdSetIterator exclDisi) {
+ super(reqScorer.weight);
+ this.reqScorer = reqScorer;
+ this.exclDisi = exclDisi;
+ }
+
+ @Override
+ public int nextDoc() throws IOException {
+ if (reqScorer == null) {
+ return doc;
+ }
+ doc = reqScorer.nextDoc();
+ if (doc == NO_MORE_DOCS) {
+ reqScorer = null; // exhausted, nothing left
+ return doc;
+ }
+ if (exclDisi == null) {
+ return doc;
+ }
+ return doc = toNonExcluded();
+ }
+
+ /** Advance to non excluded doc.
+ *
On entry:
+ *