Index: lucene/queries/src/java/org/apache/lucene/queries/TermFilter.java
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- lucene/queries/src/java/org/apache/lucene/queries/TermFilter.java	(revision )
+++ lucene/queries/src/java/org/apache/lucene/queries/TermFilter.java	(revision )
@@ -0,0 +1,95 @@
+package org.apache.lucene.queries;
+
+/*
+ * 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.index.AtomicReaderContext;
+import org.apache.lucene.index.DocsEnum;
+import org.apache.lucene.index.Term;
+import org.apache.lucene.index.Terms;
+import org.apache.lucene.index.TermsEnum;
+import org.apache.lucene.search.DocIdSet;
+import org.apache.lucene.search.DocIdSetIterator;
+import org.apache.lucene.search.Filter;
+import org.apache.lucene.util.Bits;
+
+import java.io.IOException;
+
+/**
+ * A filter that includes documents that match with a specific term.
+ */
+final public class TermFilter extends Filter {
+
+  private final Term term;
+
+  /**
+   * @param term The term documents need to have in order to be a match for this filter.
+   */
+  public TermFilter(Term term) {
+    this.term = term;
+  }
+
+  /**
+   * @return The term this filter includes documents with.
+   */
+  public Term getTerm() {
+    return term;
+  }
+
+  @Override
+  public DocIdSet getDocIdSet(AtomicReaderContext context, final Bits acceptDocs) throws IOException {
+    Terms terms = context.reader().terms(term.field());
+    if (terms == null) {
+      return null;
+    }
+
+    final TermsEnum termsEnum = terms.iterator(null);
+    if (!termsEnum.seekExact(term.bytes(), false)) {
+      return null;
+    }
+    return new DocIdSet() {
+      @Override
+      public DocIdSetIterator iterator() throws IOException {
+        return termsEnum.docs(acceptDocs, null, DocsEnum.FLAG_NONE);
+      }
+
+    };
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) return true;
+    if (o == null || getClass() != o.getClass()) return false;
+
+    TermFilter that = (TermFilter) o;
+
+    if (term != null ? !term.equals(that.term) : that.term != null) return false;
+
+    return true;
+  }
+
+  @Override
+  public int hashCode() {
+    return term != null ? term.hashCode() : 0;
+  }
+
+  @Override
+  public String toString() {
+    return term.field() + ":" + term.text();
+  }
+
+}