pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / contrib / instantiated / src / java / org / apache / lucene / store / instantiated / InstantiatedTermEnum.java

diff --git a/lucene-java-3.5.0/lucene/contrib/instantiated/src/java/org/apache/lucene/store/instantiated/InstantiatedTermEnum.java b/lucene-java-3.5.0/lucene/contrib/instantiated/src/java/org/apache/lucene/store/instantiated/InstantiatedTermEnum.java
new file mode 100644 (file)
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+++ b/lucene-java-3.5.0/lucene/contrib/instantiated/src/java/org/apache/lucene/store/instantiated/InstantiatedTermEnum.java
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+package org.apache.lucene.store.instantiated;
+
+/**
+ * Copyright 2006 The Apache Software Foundation
+ *
+ * Licensed 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.Term;
+import org.apache.lucene.index.TermEnum;
+
+/**
+ * A {@link org.apache.lucene.index.TermEnum} navigating an {@link org.apache.lucene.store.instantiated.InstantiatedIndexReader}.
+ */
+public class InstantiatedTermEnum extends TermEnum {
+
+  private final InstantiatedIndexReader reader;
+
+  public InstantiatedTermEnum(InstantiatedIndexReader reader) {
+    this.nextTermIndex = 0;
+    this.reader = reader;
+  }
+
+  public InstantiatedTermEnum(InstantiatedIndexReader reader, int startPosition) {
+    this.reader = reader;
+    this.nextTermIndex = startPosition;
+    next();
+  }
+
+  private int nextTermIndex;
+  private InstantiatedTerm term;
+
+  /**
+   * Increments the enumeration to the next element.  True if one exists.
+   */
+  @Override
+  public boolean next() {
+    if (reader.getIndex().getOrderedTerms().length <= nextTermIndex) {
+      return false;
+    } else {
+      term = reader.getIndex().getOrderedTerms()[nextTermIndex];
+      nextTermIndex++;
+      return true;
+    }
+  }
+
+  /**
+   * Returns the current Term in the enumeration.
+   */
+  @Override
+  public Term term() {
+    return term == null ? null : term.getTerm();
+  }
+
+  /**
+   * Returns the docFreq of the current Term in the enumeration.
+   */
+  @Override
+  public int docFreq() {
+    return term.getAssociatedDocuments().length;
+  }
+
+  /**
+   * Closes the enumeration to further activity, freeing resources.
+   */
+  @Override
+  public void close() {
+  }
+
+}
+
+
+