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 java.io.IOException;
import java.io.PrintStream;
import java.io.StringReader;
import java.io.Closeable;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.Token;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Fieldable;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.Term;
import org.apache.lucene.index.TermVectorOffsetInfo;
import org.apache.lucene.search.Similarity;
import org.apache.lucene.util.StringHelper;
import org.apache.lucene.util.AttributeImpl;
import org.apache.lucene.util.BitVector;
/**
* This class, similar to {@link org.apache.lucene.index.IndexWriter}, has no locking mechanism.
* <p>
* {@link org.apache.lucene.store.instantiated.InstantiatedIndexReader} is navigating
* the same instances in memory as this writer is updating so searchers active while
* you are committing are bound to throw exceptions.
* <p>
* Consider using InstantiatedIndex as if it was immutable.
*
* @see org.apache.lucene.index.IndexWriter
*/
public class InstantiatedIndexWriter implements Closeable {
private PrintStream infoStream = null;
private int maxFieldLength = IndexWriter.DEFAULT_MAX_FIELD_LENGTH;
private final InstantiatedIndex index;
private final Analyzer analyzer;
private Similarity similarity = Similarity.getDefault(); // how to normalize;
private transient Set<String> fieldNameBuffer;
/**
* linked to ensure chronological order
*/
private Map<InstantiatedDocument, Map<FieldSetting, Map<String /*text*/, TermDocumentInformationFactory>>> termDocumentInformationFactoryByDocument = new LinkedHashMap<InstantiatedDocument, Map<FieldSetting, Map<String /*text*/, TermDocumentInformationFactory>>>(2000);
private Set<InstantiatedDocument> unflushedDocuments = new HashSet<InstantiatedDocument>();
public InstantiatedIndexWriter(InstantiatedIndex index) throws IOException {
this(index, null);
}
public InstantiatedIndexWriter(InstantiatedIndex index, Analyzer analyzer) throws IOException {
this(index, analyzer, false);
}
public InstantiatedIndexWriter(InstantiatedIndex index, Analyzer analyzer, boolean create) throws IOException {
this.index = index;
this.analyzer = analyzer;
fieldNameBuffer = new HashSet<String>();
if (create) {
this.index.initialize();
}
}
private int mergeFactor = 2500;
/**
* The sweetspot for this implementation is somewhere around 2500 at 2K text large documents.
* <p/>
* Benchmark output:
* <pre>
* ------------> Report sum by Prefix (MAddDocs) and Round (8 about 8 out of 160153)
* Operation round mrg buf cmpnd runCnt recsPerRun rec/s elapsedSec avgUsedMem avgTotalMem
* MAddDocs_20000 0 10 10 true 1 20000 81,4 245,68 200 325 152 268 156 928
* MAddDocs_20000 - 1 1000 10 true - - 1 - - 20000 - - 494,1 - - 40,47 - 247 119 072 - 347 025 408
* MAddDocs_20000 2 10 100 true 1 20000 104,8 190,81 233 895 552 363 720 704
* MAddDocs_20000 - 3 2000 100 true - - 1 - - 20000 - - 527,2 - - 37,94 - 266 136 448 - 378 273 792
* MAddDocs_20000 4 10 10 false 1 20000 103,2 193,75 222 089 792 378 273 792
* MAddDocs_20000 - 5 3000 10 false - - 1 - - 20000 - - 545,2 - - 36,69 - 237 917 152 - 378 273 792
* MAddDocs_20000 6 10 100 false 1 20000 102,7 194,67 237 018 976 378 273 792
* MAddDocs_20000 - 7 4000 100 false - - 1 - - 20000 - - 535,8 - - 37,33 - 309 680 640 - 501 968 896
* </pre>
*
* @see org.apache.lucene.index.IndexWriter#setMergeFactor(int)
*/
public void setMergeFactor(int mergeFactor) {
this.mergeFactor = mergeFactor;
}
/**
* @see org.apache.lucene.index.IndexWriter#getMergeFactor()
*/
public int getMergeFactor() {
return mergeFactor;
}
/**
* If non-null, information about merges and a message when
* maxFieldLength is reached could be printed to this -- currently
* not yet implemented.
*/
public void setInfoStream(PrintStream infoStream) {
this.infoStream = infoStream;
}
public void abort() throws IOException {
// what not
}
public void addIndexes(IndexReader[] readers) {
throw new RuntimeException("Not implemented");
}
public PrintStream getInfoStream() {
return infoStream;
}
/**
* Flushes all changes to an index and closes all associated files.
*/
public void close() throws IOException {
commit();
}
/**
* Returns the number of documents currently in this index.
*/
public int docCount() {
// todo: not certain. see http://www.nabble.com/IndexWriter.docCount-tf3128882.html#a8669483
return index.getDocumentsByNumber().length /* - index.getDeletedDocuments().size() */ + unflushedDocuments.size();
}
/**
* Locks the index and commits the buffered documents.
*/
public void commit() throws IOException {
// todo write lock, unless held by caller
boolean orderedTermsDirty = false;
Set<InstantiatedTerm> dirtyTerms = new HashSet<InstantiatedTerm>(1000);
Map<String, FieldSetting> fieldSettingsByFieldName = new HashMap<String, FieldSetting>();
for (String fieldName : fieldNameBuffer) {
fieldSettingsByFieldName.put(fieldName, new FieldSetting(fieldName));
}
InstantiatedDocument[] documentsByNumber = new InstantiatedDocument[index.getDocumentsByNumber().length + termDocumentInformationFactoryByDocument.size()];
System.arraycopy(index.getDocumentsByNumber(), 0, documentsByNumber, 0, index.getDocumentsByNumber().length);
int documentNumber = index.getDocumentsByNumber().length;
List<InstantiatedTerm> orderedTerms = new ArrayList<InstantiatedTerm>(index.getOrderedTerms().length + 5000);
for (InstantiatedTerm instantiatedTerm : index.getOrderedTerms()) {
orderedTerms.add(instantiatedTerm);
}
// update norm array with fake values for new documents
Map<String, byte[]> normsByFieldNameAndDocumentNumber = new HashMap<String, byte[]>(index.getTermsByFieldAndText().size());
Set<String> fieldNames = new HashSet<String>(20);
fieldNames.addAll(index.getNormsByFieldNameAndDocumentNumber().keySet());
fieldNames.addAll(fieldNameBuffer);
for (String field : index.getTermsByFieldAndText().keySet()) {
byte[] norms = new byte[index.getDocumentsByNumber().length + termDocumentInformationFactoryByDocument.size()];
byte[] oldNorms = index.getNormsByFieldNameAndDocumentNumber().get(field);
if (oldNorms != null) {
System.arraycopy(oldNorms, 0, norms, 0, oldNorms.length);
Arrays.fill(norms, oldNorms.length, norms.length, similarity.encodeNormValue(1.0f));
} else {
Arrays.fill(norms, 0, norms.length, similarity.encodeNormValue(1.0f));
}
normsByFieldNameAndDocumentNumber.put(field, norms);
fieldNames.remove(field);
}
for (String field : fieldNames) {
//System.out.println(field);
byte[] norms = new byte[index.getDocumentsByNumber().length + termDocumentInformationFactoryByDocument.size()];
Arrays.fill(norms, 0, norms.length, similarity.encodeNormValue(1.0f));
normsByFieldNameAndDocumentNumber.put(field, norms);
}
fieldNames.clear();
index.setNormsByFieldNameAndDocumentNumber(normsByFieldNameAndDocumentNumber);
for (Map.Entry<InstantiatedDocument, Map<FieldSetting, Map<String /*text*/, TermDocumentInformationFactory>>> eDocumentTermDocInfoByTermTextAndField : termDocumentInformationFactoryByDocument.entrySet()) {
InstantiatedDocument document = eDocumentTermDocInfoByTermTextAndField.getKey();
// assign document number
document.setDocumentNumber(documentNumber++);
documentsByNumber[document.getDocumentNumber()] = document;
// set norms, prepare document and create optimized size collections.
int numFieldsWithTermVectorsInDocument = 0;
int termsInDocument = 0;
for (Map.Entry<FieldSetting, Map<String /*text*/, TermDocumentInformationFactory>> eFieldTermDocInfoFactoriesByTermText : eDocumentTermDocInfoByTermTextAndField.getValue().entrySet()) {
if (eFieldTermDocInfoFactoriesByTermText.getKey().storeTermVector) {
numFieldsWithTermVectorsInDocument += eFieldTermDocInfoFactoriesByTermText.getValue().size();
}
termsInDocument += eFieldTermDocInfoFactoriesByTermText.getValue().size();
if (eFieldTermDocInfoFactoriesByTermText.getKey().indexed && !eFieldTermDocInfoFactoriesByTermText.getKey().omitNorms) {
float norm = eFieldTermDocInfoFactoriesByTermText.getKey().boost;
norm *= document.getDocument().getBoost();
norm *= similarity.lengthNorm(eFieldTermDocInfoFactoriesByTermText.getKey().fieldName, eFieldTermDocInfoFactoriesByTermText.getKey().fieldLength);
normsByFieldNameAndDocumentNumber.get(eFieldTermDocInfoFactoriesByTermText.getKey().fieldName)[document.getDocumentNumber()] = similarity.encodeNormValue(norm);
} else {
System.currentTimeMillis();
}
}
/** used for term vectors only, i think.. */
Map<InstantiatedTerm, InstantiatedTermDocumentInformation> informationByTermOfCurrentDocument = new HashMap<InstantiatedTerm, InstantiatedTermDocumentInformation>(termsInDocument);
Map<String, FieldSetting> documentFieldSettingsByFieldName = new HashMap<String, FieldSetting>(eDocumentTermDocInfoByTermTextAndField.getValue().size());
// terms...
for (Map.Entry<FieldSetting, Map<String /*text*/, TermDocumentInformationFactory>> eFieldSetting_TermDocInfoFactoriesByTermText : eDocumentTermDocInfoByTermTextAndField.getValue().entrySet()) {
documentFieldSettingsByFieldName.put(eFieldSetting_TermDocInfoFactoriesByTermText.getKey().fieldName, eFieldSetting_TermDocInfoFactoriesByTermText.getKey());
// find or create term
for (Map.Entry<String /*text*/, TermDocumentInformationFactory> eTermText_TermDocInfoFactory : eFieldSetting_TermDocInfoFactoriesByTermText.getValue().entrySet()) {
// get term..
InstantiatedTerm term;
Map<String, InstantiatedTerm> termsByText = index.getTermsByFieldAndText().get(eFieldSetting_TermDocInfoFactoriesByTermText.getKey().fieldName);
if (termsByText == null) {
termsByText = new HashMap<String, InstantiatedTerm>(1000);
index.getTermsByFieldAndText().put(eFieldSetting_TermDocInfoFactoriesByTermText.getKey().fieldName, termsByText);
term = new InstantiatedTerm(eFieldSetting_TermDocInfoFactoriesByTermText.getKey().fieldName, eTermText_TermDocInfoFactory.getKey());
termsByText.put(eTermText_TermDocInfoFactory.getKey(), term);
int pos = Collections.binarySearch(orderedTerms, term, InstantiatedTerm.comparator);
pos = -1 - pos;
orderedTerms.add(pos, term);
orderedTermsDirty = true;
} else {
term = termsByText.get(eTermText_TermDocInfoFactory.getKey());
if (term == null) {
term = new InstantiatedTerm(eFieldSetting_TermDocInfoFactoriesByTermText.getKey().fieldName, eTermText_TermDocInfoFactory.getKey());
termsByText.put(eTermText_TermDocInfoFactory.getKey(), term);
int pos = Collections.binarySearch(orderedTerms, term, InstantiatedTerm.comparator);
pos = -1 - pos;
orderedTerms.add(pos, term);
orderedTermsDirty = true;
}
}
// create association term document information
//
// [Term]-- {0..*} | {0..* ordered} --(field)[Document]
//
// |
// [TermDocumentInformation]
int[] positions = new int[eTermText_TermDocInfoFactory.getValue().termPositions.size()];
for (int i = 0; i < positions.length; i++) {
positions[i] = eTermText_TermDocInfoFactory.getValue().termPositions.get(i);
}
byte[][] payloads = new byte[eTermText_TermDocInfoFactory.getValue().payloads.size()][];
for (int i = 0; i < payloads.length; i++) {
payloads[i] = eTermText_TermDocInfoFactory.getValue().payloads.get(i);
}
// couple
InstantiatedTermDocumentInformation info = new InstantiatedTermDocumentInformation(term, document, /*eTermText_TermDocInfoFactory.getValue().termFrequency,*/ positions, payloads);
// todo optimize, this should be cached and updated to array in batches rather than appending the array once for every position!
InstantiatedTermDocumentInformation[] associatedDocuments;
if (term.getAssociatedDocuments() != null) {
associatedDocuments = new InstantiatedTermDocumentInformation[term.getAssociatedDocuments().length + 1];
System.arraycopy(term.getAssociatedDocuments(), 0, associatedDocuments, 0, term.getAssociatedDocuments().length);
} else {
associatedDocuments = new InstantiatedTermDocumentInformation[1];
}
associatedDocuments[associatedDocuments.length - 1] = info;
term.setAssociatedDocuments(associatedDocuments);
// todo optimize, only if term vector?
informationByTermOfCurrentDocument.put(term, info);
dirtyTerms.add(term);
}
// term vector offsets
if (eFieldSetting_TermDocInfoFactoriesByTermText.getKey().storeOffsetWithTermVector) {
for (Map.Entry<InstantiatedTerm, InstantiatedTermDocumentInformation> e : informationByTermOfCurrentDocument.entrySet()) {
if (eFieldSetting_TermDocInfoFactoriesByTermText.getKey().fieldName.equals(e.getKey().field())) {
TermDocumentInformationFactory factory = eFieldSetting_TermDocInfoFactoriesByTermText.getValue().get(e.getKey().text());
e.getValue().setTermOffsets(factory.termOffsets.toArray(new TermVectorOffsetInfo[factory.termOffsets.size()]));
}
}
}
}
Map<String, List<InstantiatedTermDocumentInformation>> termDocumentInformationsByField = new HashMap<String, List<InstantiatedTermDocumentInformation>>();
for (Map.Entry<InstantiatedTerm, InstantiatedTermDocumentInformation> eTerm_TermDocumentInformation : informationByTermOfCurrentDocument.entrySet()) {
List<InstantiatedTermDocumentInformation> termDocumentInformations = termDocumentInformationsByField.get(eTerm_TermDocumentInformation.getKey().field());
if (termDocumentInformations == null) {
termDocumentInformations = new ArrayList<InstantiatedTermDocumentInformation>();
termDocumentInformationsByField.put(eTerm_TermDocumentInformation.getKey().field(), termDocumentInformations);
}
termDocumentInformations.add(eTerm_TermDocumentInformation.getValue());
}
for (Map.Entry<String, List<InstantiatedTermDocumentInformation>> eField_TermDocInfos : termDocumentInformationsByField.entrySet()) {
Collections.sort(eField_TermDocInfos.getValue(), new Comparator<InstantiatedTermDocumentInformation>() {
public int compare(InstantiatedTermDocumentInformation instantiatedTermDocumentInformation, InstantiatedTermDocumentInformation instantiatedTermDocumentInformation1) {
return instantiatedTermDocumentInformation.getTerm().getTerm().compareTo(instantiatedTermDocumentInformation1.getTerm().getTerm());
}
});
// add term vector
if (documentFieldSettingsByFieldName.get(eField_TermDocInfos.getKey()).storeTermVector) {
if (document.getVectorSpace() == null) {
document.setVectorSpace(new HashMap<String, List<InstantiatedTermDocumentInformation>>(documentFieldSettingsByFieldName.size()));
}
document.getVectorSpace().put(eField_TermDocInfos.getKey(), eField_TermDocInfos.getValue());
}
}
fieldSettingsByFieldName.putAll(documentFieldSettingsByFieldName);
}
// order document informations in dirty terms
for (InstantiatedTerm term : dirtyTerms) {
// todo optimize, i believe this is useless, that the natural order is document number?
Arrays.sort(term.getAssociatedDocuments(), InstantiatedTermDocumentInformation.documentNumberComparator);
// // update association class reference for speedy skipTo()
// for (int i = 0; i < term.getAssociatedDocuments().length; i++) {
// term.getAssociatedDocuments()[i].setIndexFromTerm(i);
// }
}
// flush to writer
index.setDocumentsByNumber(documentsByNumber);
index.setOrderedTerms(orderedTerms.toArray(new InstantiatedTerm[orderedTerms.size()]));
for (FieldSetting fieldSetting : fieldSettingsByFieldName.values()) {
index.getFieldSettings().merge(fieldSetting);
}
// set term index
if (orderedTermsDirty) {
// todo optimize, only update from start position
for (int i = 0; i < index.getOrderedTerms().length; i++) {
index.getOrderedTerms()[i].setTermIndex(i);
}
}
// remove deleted documents
IndexReader indexDeleter = index.indexReaderFactory();
if (unflushedDeletions.size() > 0) {
for (Term term : unflushedDeletions) {
indexDeleter.deleteDocuments(term);
}
unflushedDeletions.clear();
}
// all done, clear buffers
unflushedDocuments.clear();
termDocumentInformationFactoryByDocument.clear();
fieldNameBuffer.clear();
// update deleted documents bitset
if (index.getDeletedDocuments() != null) {
BitVector deletedDocuments = new BitVector(index.getDocumentsByNumber().length);
for (int i = 0; i < index.getDeletedDocuments().size(); i++) {
if (index.getDeletedDocuments().get(i)) {
deletedDocuments.set(i);
}
}
index.setDeletedDocuments(deletedDocuments);
}
index.setVersion(System.currentTimeMillis());
// todo unlock
indexDeleter.close();
}
/**
* Adds a document to this index. If the document contains more than
* {@link #setMaxFieldLength(int)} terms for a given field, the remainder are
* discarded.
*/
public void addDocument(Document doc) throws IOException {
addDocument(doc, getAnalyzer());
}
/**
* Adds a document to this index, using the provided analyzer instead of the
* value of {@link #getAnalyzer()}. If the document contains more than
* {@link #setMaxFieldLength(int)} terms for a given field, the remainder are
* discarded.
*
* @param doc
* @param analyzer
* @throws IOException
*/
public void addDocument(Document doc, Analyzer analyzer) throws IOException {
addDocument(new InstantiatedDocument(doc), analyzer);
}
/**
* Tokenizes a document and adds it to the buffer.
* Try to do all calculations in this method rather than in commit, as this is a non locking method.
* Remember, this index implementation expects unlimited memory for maximum speed.
*
* @param document
* @param analyzer
* @throws IOException
*/
protected void addDocument(InstantiatedDocument document, Analyzer analyzer) throws IOException {
if (document.getDocumentNumber() != null) {
throw new RuntimeException("Document number already set! Are you trying to add a document that already is bound to this or another index?");
}
// todo: write lock
// normalize settings per field name in document
Map<String /* field name */, FieldSetting> fieldSettingsByFieldName = new HashMap<String, FieldSetting>();
for (Fieldable field : document.getDocument().getFields()) {
FieldSetting fieldSetting = fieldSettingsByFieldName.get(field.name());
if (fieldSetting == null) {
fieldSetting = new FieldSetting();
fieldSetting.fieldName = StringHelper.intern(field.name());
fieldSettingsByFieldName.put(fieldSetting.fieldName, fieldSetting);
fieldNameBuffer.add(fieldSetting.fieldName);
}
// todo: fixme: multiple fields with the same name does not mean field boost += more boost.
fieldSetting.boost *= field.getBoost();
//fieldSettings.dimensions++;
// once fieldSettings, always fieldSettings.
if (field.getOmitNorms()) {
fieldSetting.omitNorms = true;
}
if (field.isIndexed() ) {
fieldSetting.indexed = true;
}
if (field.isTokenized()) {
fieldSetting.tokenized = true;
}
if (field.isStored()) {
fieldSetting.stored = true;
}
if (field.isBinary()) {
fieldSetting.isBinary = true;
}
if (field.isTermVectorStored()) {
fieldSetting.storeTermVector = true;
}
if (field.isStorePositionWithTermVector()) {
fieldSetting.storePositionWithTermVector = true;
}
if (field.isStoreOffsetWithTermVector()) {
fieldSetting.storeOffsetWithTermVector = true;
}
}
Map<Fieldable, LinkedList<Token>> tokensByField = new LinkedHashMap<Fieldable, LinkedList<Token>>(20);
// tokenize indexed fields.
for (Iterator<Fieldable> it = document.getDocument().getFields().iterator(); it.hasNext();) {
Fieldable field = it.next();
FieldSetting fieldSetting = fieldSettingsByFieldName.get(field.name());
if (field.isIndexed()) {
LinkedList<Token> tokens = new LinkedList<Token>();
tokensByField.put(field, tokens);
if (field.isTokenized()) {
final TokenStream tokenStream;
// todo readerValue(), binaryValue()
if (field.tokenStreamValue() != null) {
tokenStream = field.tokenStreamValue();
} else {
tokenStream = analyzer.tokenStream(field.name(), new StringReader(field.stringValue()));
}
// reset the TokenStream to the first token
tokenStream.reset();
while (tokenStream.incrementToken()) {
// TODO: this is a simple workaround to still work with tokens, not very effective, but as far as I know, this writer should get removed soon:
final Token token = new Token();
for (Iterator<AttributeImpl> atts = tokenStream.getAttributeImplsIterator(); atts.hasNext();) {
final AttributeImpl att = atts.next();
try {
att.copyTo(token);
} catch (Exception e) {
// ignore unsupported attributes,
// this may fail to copy some attributes, if a special combined AttributeImpl is used, that
// implements basic attributes supported by Token and also other customized ones in one class.
}
}
tokens.add(token); // the vector will be built on commit.
fieldSetting.fieldLength++;
if (fieldSetting.fieldLength > maxFieldLength) {
break;
}
}
tokenStream.end();
tokenStream.close();
} else {
// untokenized
String fieldVal = field.stringValue();
Token token = new Token(0, fieldVal.length(), "untokenized");
token.setEmpty().append(fieldVal);
tokens.add(token);
fieldSetting.fieldLength++;
}
}
if (!field.isStored()) {
it.remove();
}
}
Map<FieldSetting, Map<String /*text*/, TermDocumentInformationFactory>> termDocumentInformationFactoryByTermTextAndFieldSetting = new HashMap<FieldSetting, Map<String /*text*/, TermDocumentInformationFactory>>();
termDocumentInformationFactoryByDocument.put(document, termDocumentInformationFactoryByTermTextAndFieldSetting);
// build term vector, term positions and term offsets
for (Map.Entry<Fieldable, LinkedList<Token>> eField_Tokens : tokensByField.entrySet()) {
FieldSetting fieldSetting = fieldSettingsByFieldName.get(eField_Tokens.getKey().name());
Map<String, TermDocumentInformationFactory> termDocumentInformationFactoryByTermText = termDocumentInformationFactoryByTermTextAndFieldSetting.get(fieldSettingsByFieldName.get(eField_Tokens.getKey().name()));
if (termDocumentInformationFactoryByTermText == null) {
termDocumentInformationFactoryByTermText = new HashMap<String /*text*/, TermDocumentInformationFactory>();
termDocumentInformationFactoryByTermTextAndFieldSetting.put(fieldSettingsByFieldName.get(eField_Tokens.getKey().name()), termDocumentInformationFactoryByTermText);
}
int lastOffset = 0;
// for each new field, move positions a bunch.
if (fieldSetting.position > 0) {
// todo what if no analyzer set, multiple fields with same name and index without tokenization?
fieldSetting.position += analyzer.getPositionIncrementGap(fieldSetting.fieldName);
}
for (Token token : eField_Tokens.getValue()) {
TermDocumentInformationFactory termDocumentInformationFactory = termDocumentInformationFactoryByTermText.get(token.toString());
if (termDocumentInformationFactory == null) {
termDocumentInformationFactory = new TermDocumentInformationFactory();
termDocumentInformationFactoryByTermText.put(token.toString(), termDocumentInformationFactory);
}
//termDocumentInformationFactory.termFrequency++;
fieldSetting.position += (token.getPositionIncrement() - 1);
termDocumentInformationFactory.termPositions.add(fieldSetting.position++);
if (token.getPayload() != null && token.getPayload().length() > 0) {
termDocumentInformationFactory.payloads.add(token.getPayload().toByteArray());
fieldSetting.storePayloads = true;
} else {
termDocumentInformationFactory.payloads.add(null);
}
if (eField_Tokens.getKey().isStoreOffsetWithTermVector()) {
termDocumentInformationFactory.termOffsets.add(new TermVectorOffsetInfo(fieldSetting.offset + token.startOffset(), fieldSetting.offset + token.endOffset()));
lastOffset = fieldSetting.offset + token.endOffset();
}
}
if (eField_Tokens.getKey().isStoreOffsetWithTermVector()) {
fieldSetting.offset = lastOffset + 1;
}
}
unflushedDocuments.add(document);
// if too many documents in buffer, commit.
if (unflushedDocuments.size() >= getMergeFactor()) {
commit(/*lock*/);
}
// todo: unlock write lock
}
private Set<Term> unflushedDeletions = new HashSet<Term>();
public void deleteDocuments(Term term) throws IOException {
unflushedDeletions.add(term);
}
public void deleteDocuments(Term[] terms) throws IOException {
for (Term term : terms) {
deleteDocuments(term);
}
}
public void updateDocument(Term term, Document doc) throws IOException {
updateDocument(term, doc, getAnalyzer());
}
public void updateDocument(Term term, Document doc, Analyzer analyzer) throws IOException {
deleteDocuments(term);
addDocument(doc, analyzer);
}
public int getMaxFieldLength() {
return maxFieldLength;
}
public void setMaxFieldLength(int maxFieldLength) {
this.maxFieldLength = maxFieldLength;
}
public Similarity getSimilarity() {
return similarity;
}
public void setSimilarity(Similarity similarity) {
this.similarity = similarity;
}
public Analyzer getAnalyzer() {
return analyzer;
}
private class TermDocumentInformationFactory {
private LinkedList<byte[]> payloads = new LinkedList<byte[]>();
private LinkedList<Integer> termPositions = new LinkedList<Integer>();
private LinkedList<TermVectorOffsetInfo> termOffsets = new LinkedList<TermVectorOffsetInfo>();
}
static class FieldSetting extends org.apache.lucene.store.instantiated.FieldSetting {
float boost = 1;
int position = 0;
int offset;
int fieldLength = 0;
boolean omitNorms = false;
boolean isBinary = false;
private FieldSetting() {
}
private FieldSetting(String fieldName) {
super(fieldName);
}
}
}