pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / backwards / src / test / org / apache / lucene / index / TestFilterIndexReader.java

diff --git a/lucene-java-3.5.0/lucene/backwards/src/test/org/apache/lucene/index/TestFilterIndexReader.java b/lucene-java-3.5.0/lucene/backwards/src/test/org/apache/lucene/index/TestFilterIndexReader.java
new file mode 100644 (file)
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+++ b/lucene-java-3.5.0/lucene/backwards/src/test/org/apache/lucene/index/TestFilterIndexReader.java
@@ -0,0 +1,139 @@
+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 org.apache.lucene.util.LuceneTestCase;
+import junit.framework.TestSuite;
+import junit.textui.TestRunner;
+
+import org.apache.lucene.analysis.MockAnalyzer;
+import org.apache.lucene.store.Directory;
+import org.apache.lucene.document.Document;
+import org.apache.lucene.document.Field;
+
+import java.io.IOException;
+
+public class TestFilterIndexReader extends LuceneTestCase {
+
+  private static class TestReader extends FilterIndexReader {
+
+     /** Filter that only permits terms containing 'e'.*/
+    private static class TestTermEnum extends FilterTermEnum {
+      public TestTermEnum(TermEnum termEnum) {
+        super(termEnum);
+      }
+
+      /** Scan for terms containing the letter 'e'.*/
+      @Override
+      public boolean next() throws IOException {
+        while (in.next()) {
+          if (in.term().text().indexOf('e') != -1)
+            return true;
+        }
+        return false;
+      }
+    }
+    
+    /** Filter that only returns odd numbered documents. */
+    private static class TestTermPositions extends FilterTermPositions {
+      public TestTermPositions(TermPositions in) {
+        super(in);
+      }
+
+      /** Scan for odd numbered documents. */
+      @Override
+      public boolean next() throws IOException {
+        while (in.next()) {
+          if ((in.doc() % 2) == 1)
+            return true;
+        }
+        return false;
+      }
+    }
+    
+    public TestReader(IndexReader reader) {
+      super(reader);
+    }
+
+    /** Filter terms with TestTermEnum. */
+    @Override
+    public TermEnum terms() throws IOException {
+      return new TestTermEnum(in.terms());
+    }
+
+    /** Filter positions with TestTermPositions. */
+    @Override
+    public TermPositions termPositions() throws IOException {
+      return new TestTermPositions(in.termPositions());
+    }
+  }
+
+
+  /** Main for running test case by itself. */
+  public static void main(String args[]) {
+    TestRunner.run (new TestSuite(TestIndexReader.class));
+  }
+    
+  /**
+   * Tests the IndexReader.getFieldNames implementation
+   * @throws Exception on error
+   */
+  public void testFilterIndexReader() throws Exception {
+    Directory directory = newDirectory();
+    IndexWriter writer = new IndexWriter(directory, newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random)));
+
+    Document d1 = new Document();
+    d1.add(newField("default","one two", Field.Store.YES, Field.Index.ANALYZED));
+    writer.addDocument(d1);
+
+    Document d2 = new Document();
+    d2.add(newField("default","one three", Field.Store.YES, Field.Index.ANALYZED));
+    writer.addDocument(d2);
+
+    Document d3 = new Document();
+    d3.add(newField("default","two four", Field.Store.YES, Field.Index.ANALYZED));
+    writer.addDocument(d3);
+
+    writer.close();
+
+    IndexReader reader = new TestReader(IndexReader.open(directory, true));
+    TermEnum terms = reader.terms();
+    while (terms.next()) {
+      assertTrue(terms.term().text().indexOf('e') != -1);
+    }
+    terms.close();
+    
+    TermPositions positions = reader.termPositions(new Term("default", "one"));
+    while (positions.next()) {
+      assertTrue((positions.doc() % 2) == 1);
+    }
+
+    int NUM_DOCS = 3;
+
+    TermDocs td = reader.termDocs(null);
+    for(int i=0;i<NUM_DOCS;i++) {
+      assertTrue(td.next());
+      assertEquals(i, td.doc());
+      assertEquals(1, td.freq());
+    }
+    td.close();
+    reader.close();
+    directory.close();
+  }
+}