com.liferay.portal.kernel.search.BaseGenericSpellCheckIndexWriter Maven / Gradle / Ivy
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Contains interfaces for the portal services. Interfaces are only loaded by the global class loader and are shared by all plugins.
/**
* Copyright (c) 2000-2013 Liferay, Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 2.1 of the License, or (at your option)
* any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*/
package com.liferay.portal.kernel.search;
import com.liferay.portal.kernel.log.Log;
import com.liferay.portal.kernel.log.LogFactoryUtil;
import com.liferay.portal.kernel.util.StringPool;
import com.liferay.portal.util.PortletKeys;
import java.io.InputStream;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
/**
* @author Michael C. Han
*/
public abstract class BaseGenericSpellCheckIndexWriter
extends BaseSpellCheckIndexWriter {
public void setBatchSize(int batchSize) {
_batchSize = batchSize;
}
public void setDocumentPrototype(Document documentPrototype) {
_documentPrototype = documentPrototype;
}
public void setIndexWriter(IndexWriter indexWriter) {
_indexWriter = indexWriter;
}
protected void addNGramFields(
Document document, Map nGrams) {
for (Map.Entry nGramEntry : nGrams.entrySet()) {
document.addKeyword(nGramEntry.getKey(), nGramEntry.getValue());
}
}
protected Document createDocument(
long companyId, long groupId, String languageId, String keywords,
float weight, String keywordFieldName, String typeFieldValue,
int maxNGramLength)
throws SearchException {
Document document = (Document)_documentPrototype.clone();
document.addKeyword(Field.COMPANY_ID, companyId);
document.addKeyword(Field.GROUP_ID, groupId);
document.addKeyword(Field.LANGUAGE_ID, languageId);
document.addKeyword(Field.PORTLET_ID, PortletKeys.SEARCH);
document.addKeyword(Field.PRIORITY, String.valueOf(weight));
document.addKeyword(keywordFieldName, keywords);
document.addKeyword(Field.TYPE, typeFieldValue);
document.addKeyword(Field.UID, getUID(companyId, languageId, keywords));
NGramHolder nGramHolder = NGramHolderBuilderUtil.buildNGramHolder(
keywords, maxNGramLength);
addNGramFields(document, nGramHolder.getNGramEnds());
Map> nGrams = nGramHolder.getNGrams();
for (Map.Entry> entry : nGrams.entrySet()) {
String fieldName = entry.getKey();
for (String nGram : entry.getValue()) {
document.addKeyword(fieldName, nGram);
}
}
addNGramFields(document, nGramHolder.getNGramStarts());
return document;
}
@Override
protected void indexKeyword(
long companyId, long groupId, String languageId, String keyword,
float weight, String keywordFieldName, String typeFieldValue,
int maxNGramLength)
throws Exception {
Document document = createDocument(
companyId, groupId, languageId, keyword, weight, keywordFieldName,
typeFieldValue, maxNGramLength);
_indexWriter.addDocument(null, document);
}
@Override
protected void indexKeywords(
long companyId, long groupId, String languageId,
InputStream inputStream, String keywordFieldName,
String typeFieldValue, int maxNGramLength)
throws Exception {
Set documents = new HashSet();
try {
DictionaryReader dictionaryReader = new DictionaryReader(
inputStream, StringPool.UTF8);
Iterator iterator =
dictionaryReader.getDictionaryEntriesIterator();
int counter = 0;
while (iterator.hasNext()) {
counter++;
DictionaryEntry dictionaryEntry = iterator.next();
Document document = createDocument(
companyId, groupId, languageId, dictionaryEntry.getWord(),
dictionaryEntry.getWeight(), keywordFieldName,
typeFieldValue, maxNGramLength);
documents.add(document);
if ((counter == _batchSize) || !iterator.hasNext()) {
_indexWriter.addDocuments(null, documents);
documents.clear();
counter = 0;
}
}
}
catch (Exception e) {
if (_log.isWarnEnabled()) {
_log.warn("Unable to index dictionaries", e);
}
throw new SearchException(e.getMessage(), e);
}
}
private static final int _DEFAULT_BATCH_SIZE = 1000;
private static Log _log = LogFactoryUtil.getLog(
BaseGenericSpellCheckIndexWriter.class);
private int _batchSize = _DEFAULT_BATCH_SIZE;
private Document _documentPrototype = new DocumentImpl();
private IndexWriter _indexWriter;
}