pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / src / java / org / apache / lucene / index / SegmentMergeInfo.java

diff --git a/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/index/SegmentMergeInfo.java b/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/index/SegmentMergeInfo.java
new file mode 100644 (file)
index 0000000..1807e0b
--- /dev/null
+++ b/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/index/SegmentMergeInfo.java
@@ -0,0 +1,91 @@
+package org.apache.lucene.index;
+
+/**
+ * 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;
+
+import org.apache.lucene.index.PayloadProcessorProvider.DirPayloadProcessor;
+
+final class SegmentMergeInfo {
+  Term term;
+  int base;
+  int ord;  // the position of the segment in a MultiReader
+  TermEnum termEnum;
+  IndexReader reader;
+  int delCount;
+  private TermPositions postings;  // use getPositions()
+  private int[] docMap;  // use getDocMap()
+  DirPayloadProcessor dirPayloadProcessor;
+  
+  SegmentMergeInfo(int b, TermEnum te, IndexReader r)
+    throws IOException {
+    base = b;
+    reader = r;
+    termEnum = te;
+    term = te.term();
+  }
+
+  // maps around deleted docs
+  int[] getDocMap() {
+    if (docMap == null) {
+      delCount = 0;
+      // build array which maps document numbers around deletions 
+      if (reader.hasDeletions()) {
+        int maxDoc = reader.maxDoc();
+        docMap = new int[maxDoc];
+        int j = 0;
+        for (int i = 0; i < maxDoc; i++) {
+          if (reader.isDeleted(i)) {
+            delCount++;
+            docMap[i] = -1;
+          } else
+            docMap[i] = j++;
+        }
+      }
+    }
+    return docMap;
+  }
+
+  TermPositions getPositions() throws IOException {
+    if (postings == null) {
+      postings = reader.termPositions();
+    }
+    return postings;
+  }
+
+  final boolean next() throws IOException {
+    if (termEnum.next()) {
+      term = termEnum.term();
+      return true;
+    } else {
+      term = null;
+      return false;
+    }
+  }
+
+  final void close() throws IOException {
+    try {
+      termEnum.close();
+    } finally {
+      if (postings != null) {
+        postings.close();
+      }
+    }
+  }
+}
+