+++ /dev/null
-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.document.Document;
-import org.apache.lucene.document.FieldSelector;
-import org.apache.lucene.store.Directory;
-import org.apache.lucene.util.MapBackedSet;
-
-import java.io.IOException;
-import java.util.Collection;
-import java.util.Map;
-import java.util.concurrent.ConcurrentHashMap;
-
-/** A <code>FilterIndexReader</code> contains another IndexReader, which it
- * uses as its basic source of data, possibly transforming the data along the
- * way or providing additional functionality. The class
- * <code>FilterIndexReader</code> itself simply implements all abstract methods
- * of <code>IndexReader</code> with versions that pass all requests to the
- * contained index reader. Subclasses of <code>FilterIndexReader</code> may
- * further override some of these methods and may also provide additional
- * methods and fields.
- */
-public class FilterIndexReader extends IndexReader {
-
- /** Base class for filtering {@link TermDocs} implementations. */
- public static class FilterTermDocs implements TermDocs {
- protected TermDocs in;
-
- public FilterTermDocs(TermDocs in) { this.in = in; }
-
- public void seek(Term term) throws IOException { in.seek(term); }
- public void seek(TermEnum termEnum) throws IOException { in.seek(termEnum); }
- public int doc() { return in.doc(); }
- public int freq() { return in.freq(); }
- public boolean next() throws IOException { return in.next(); }
- public int read(int[] docs, int[] freqs) throws IOException {
- return in.read(docs, freqs);
- }
- public boolean skipTo(int i) throws IOException { return in.skipTo(i); }
- public void close() throws IOException { in.close(); }
- }
-
- /** Base class for filtering {@link TermPositions} implementations. */
- public static class FilterTermPositions
- extends FilterTermDocs implements TermPositions {
-
- public FilterTermPositions(TermPositions in) { super(in); }
-
- public int nextPosition() throws IOException {
- return ((TermPositions) this.in).nextPosition();
- }
-
- public int getPayloadLength() {
- return ((TermPositions) this.in).getPayloadLength();
- }
-
- public byte[] getPayload(byte[] data, int offset) throws IOException {
- return ((TermPositions) this.in).getPayload(data, offset);
- }
-
-
- // TODO: Remove warning after API has been finalized
- public boolean isPayloadAvailable() {
- return ((TermPositions)this.in).isPayloadAvailable();
- }
- }
-
- /** Base class for filtering {@link TermEnum} implementations. */
- public static class FilterTermEnum extends TermEnum {
- protected TermEnum in;
-
- public FilterTermEnum(TermEnum in) { this.in = in; }
-
- @Override
- public boolean next() throws IOException { return in.next(); }
- @Override
- public Term term() { return in.term(); }
- @Override
- public int docFreq() { return in.docFreq(); }
- @Override
- public void close() throws IOException { in.close(); }
- }
-
- protected IndexReader in;
-
- /**
- * <p>Construct a FilterIndexReader based on the specified base reader.
- * Directory locking for delete, undeleteAll, and setNorm operations is
- * left to the base reader.</p>
- * <p>Note that base reader is closed if this FilterIndexReader is closed.</p>
- * @param in specified base reader.
- */
- public FilterIndexReader(IndexReader in) {
- super();
- this.in = in;
- readerFinishedListeners = new MapBackedSet<ReaderFinishedListener>(new ConcurrentHashMap<ReaderFinishedListener,Boolean>());
- }
-
- @Override
- public Directory directory() {
- return in.directory();
- }
-
- @Override
- public TermFreqVector[] getTermFreqVectors(int docNumber)
- throws IOException {
- ensureOpen();
- return in.getTermFreqVectors(docNumber);
- }
-
- @Override
- public TermFreqVector getTermFreqVector(int docNumber, String field)
- throws IOException {
- ensureOpen();
- return in.getTermFreqVector(docNumber, field);
- }
-
-
- @Override
- public void getTermFreqVector(int docNumber, String field, TermVectorMapper mapper) throws IOException {
- ensureOpen();
- in.getTermFreqVector(docNumber, field, mapper);
-
- }
-
- @Override
- public void getTermFreqVector(int docNumber, TermVectorMapper mapper) throws IOException {
- ensureOpen();
- in.getTermFreqVector(docNumber, mapper);
- }
-
- @Override
- public int numDocs() {
- // Don't call ensureOpen() here (it could affect performance)
- return in.numDocs();
- }
-
- @Override
- public int maxDoc() {
- // Don't call ensureOpen() here (it could affect performance)
- return in.maxDoc();
- }
-
- @Override
- public Document document(int n, FieldSelector fieldSelector) throws CorruptIndexException, IOException {
- ensureOpen();
- return in.document(n, fieldSelector);
- }
-
- @Override
- public boolean isDeleted(int n) {
- // Don't call ensureOpen() here (it could affect performance)
- return in.isDeleted(n);
- }
-
- @Override
- public boolean hasDeletions() {
- // Don't call ensureOpen() here (it could affect performance)
- return in.hasDeletions();
- }
-
- @Override
- protected void doUndeleteAll() throws CorruptIndexException, IOException {in.undeleteAll();}
-
- @Override
- public boolean hasNorms(String field) throws IOException {
- ensureOpen();
- return in.hasNorms(field);
- }
-
- @Override
- public byte[] norms(String f) throws IOException {
- ensureOpen();
- return in.norms(f);
- }
-
- @Override
- public void norms(String f, byte[] bytes, int offset) throws IOException {
- ensureOpen();
- in.norms(f, bytes, offset);
- }
-
- @Override
- protected void doSetNorm(int d, String f, byte b) throws CorruptIndexException, IOException {
- in.setNorm(d, f, b);
- }
-
- @Override
- public TermEnum terms() throws IOException {
- ensureOpen();
- return in.terms();
- }
-
- @Override
- public TermEnum terms(Term t) throws IOException {
- ensureOpen();
- return in.terms(t);
- }
-
- @Override
- public int docFreq(Term t) throws IOException {
- ensureOpen();
- return in.docFreq(t);
- }
-
- @Override
- public TermDocs termDocs() throws IOException {
- ensureOpen();
- return in.termDocs();
- }
-
- @Override
- public TermDocs termDocs(Term term) throws IOException {
- ensureOpen();
- return in.termDocs(term);
- }
-
- @Override
- public TermPositions termPositions() throws IOException {
- ensureOpen();
- return in.termPositions();
- }
-
- @Override
- protected void doDelete(int n) throws CorruptIndexException, IOException { in.deleteDocument(n); }
-
- @Override
- protected void doCommit(Map<String,String> commitUserData) throws IOException { in.commit(commitUserData); }
-
- @Override
- protected void doClose() throws IOException {
- in.close();
- }
-
-
- @Override
- public Collection<String> getFieldNames(IndexReader.FieldOption fieldNames) {
- ensureOpen();
- return in.getFieldNames(fieldNames);
- }
-
- @Override
- public long getVersion() {
- ensureOpen();
- return in.getVersion();
- }
-
- @Override
- public boolean isCurrent() throws CorruptIndexException, IOException {
- ensureOpen();
- return in.isCurrent();
- }
-
- @Override
- public boolean isOptimized() {
- ensureOpen();
- return in.isOptimized();
- }
-
- @Override
- public IndexReader[] getSequentialSubReaders() {
- return in.getSequentialSubReaders();
- }
-
- /** If the subclass of FilteredIndexReader modifies the
- * contents of the FieldCache, you must override this
- * method to provide a different key */
- @Override
- public Object getCoreCacheKey() {
- return in.getCoreCacheKey();
- }
-
- /** If the subclass of FilteredIndexReader modifies the
- * deleted docs, you must override this method to provide
- * a different key */
- @Override
- public Object getDeletesCacheKey() {
- return in.getDeletesCacheKey();
- }
-
- /** {@inheritDoc} */
- @Override
- public String toString() {
- final StringBuilder buffer = new StringBuilder("FilterReader(");
- buffer.append(in);
- buffer.append(')');
- return buffer.toString();
- }
-
- @Override
- public void addReaderFinishedListener(ReaderFinishedListener listener) {
- super.addReaderFinishedListener(listener);
- in.addReaderFinishedListener(listener);
- }
-
- @Override
- public void removeReaderFinishedListener(ReaderFinishedListener listener) {
- super.removeReaderFinishedListener(listener);
- in.removeReaderFinishedListener(listener);
- }
-}
-
fnp / pylucene.git / blobdiff