本文整理汇总了Java中org.apache.lucene.queries.mlt.MoreLikeThisQuery类的典型用法代码示例。如果您正苦于以下问题：Java MoreLikeThisQuery类的具体用法？Java MoreLikeThisQuery怎么用？Java MoreLikeThisQuery使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
MoreLikeThisQuery类属于org.apache.lucene.queries.mlt包，在下文中一共展示了MoreLikeThisQuery类的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: getQuery
import org.apache.lucene.queries.mlt.MoreLikeThisQuery; //导入依赖的package包/类
@Override
public Query getQuery(Element e) throws ParserException {
String fieldsList = e.getAttribute("fieldNames"); //a comma-delimited list of fields
String fields[] = defaultFieldNames;
if ((fieldsList != null) && (fieldsList.trim().length() > 0)) {
fields = fieldsList.trim().split(",");
//trim the fieldnames
for (int i = 0; i < fields.length; i++) {
fields[i] = fields[i].trim();
}
}
//Parse any "stopWords" attribute
//TODO MoreLikeThis needs to ideally have per-field stopWords lists - until then
//I use all analyzers/fields to generate multi-field compatible stop list
String stopWords = e.getAttribute("stopWords");
Set<String> stopWordsSet = null;
if ((stopWords != null) && (fields != null)) {
stopWordsSet = new HashSet<>();
for (String field : fields) {
TokenStream ts = null;
try {
ts = analyzer.tokenStream(field, stopWords);
CharTermAttribute termAtt = ts.addAttribute(CharTermAttribute.class);
ts.reset();
while (ts.incrementToken()) {
stopWordsSet.add(termAtt.toString());
}
ts.end();
} catch (IOException ioe) {
throw new ParserException("IoException parsing stop words list in "
+ getClass().getName() + ":" + ioe.getLocalizedMessage());
} finally {
IOUtils.closeWhileHandlingException(ts);
}
}
}
MoreLikeThisQuery mlt = new MoreLikeThisQuery(DOMUtils.getText(e), fields, analyzer, fields[0]);
mlt.setMaxQueryTerms(DOMUtils.getAttribute(e, "maxQueryTerms", DEFAULT_MAX_QUERY_TERMS));
mlt.setMinTermFrequency(DOMUtils.getAttribute(e, "minTermFrequency", DEFAULT_MIN_TERM_FREQUENCY));
mlt.setPercentTermsToMatch(DOMUtils.getAttribute(e, "percentTermsToMatch", DEFAULT_PERCENT_TERMS_TO_MATCH) / 100);
mlt.setStopWords(stopWordsSet);
int minDocFreq = DOMUtils.getAttribute(e, "minDocFreq", -1);
if (minDocFreq >= 0) {
mlt.setMinDocFreq(minDocFreq);
}
mlt.setBoost(DOMUtils.getAttribute(e, "boost", 1.0f));
return mlt;
}
示例2: getQuery
import org.apache.lucene.queries.mlt.MoreLikeThisQuery; //导入依赖的package包/类
@Override
public Query getQuery(Element e) throws ParserException {
String fieldsList = e.getAttribute("fieldNames"); //a comma-delimited list of fields
String fields[] = defaultFieldNames;
if ((fieldsList != null) && (fieldsList.trim().length() > 0)) {
fields = fieldsList.trim().split(",");
//trim the fieldnames
for (int i = 0; i < fields.length; i++) {
fields[i] = fields[i].trim();
}
}
//Parse any "stopWords" attribute
//TODO MoreLikeThis needs to ideally have per-field stopWords lists - until then
//I use all analyzers/fields to generate multi-field compatible stop list
String stopWords = e.getAttribute("stopWords");
Set<String> stopWordsSet = null;
if ((stopWords != null) && (fields != null)) {
stopWordsSet = new HashSet<String>();
for (String field : fields) {
try {
TokenStream ts = analyzer.tokenStream(field, new StringReader(stopWords));
CharTermAttribute termAtt = ts.addAttribute(CharTermAttribute.class);
ts.reset();
while (ts.incrementToken()) {
stopWordsSet.add(termAtt.toString());
}
ts.end();
ts.close();
} catch (IOException ioe) {
throw new ParserException("IoException parsing stop words list in "
+ getClass().getName() + ":" + ioe.getLocalizedMessage());
}
}
}
MoreLikeThisQuery mlt = new MoreLikeThisQuery(DOMUtils.getText(e), fields, analyzer, fields[0]);
mlt.setMaxQueryTerms(DOMUtils.getAttribute(e, "maxQueryTerms", DEFAULT_MAX_QUERY_TERMS));
mlt.setMinTermFrequency(DOMUtils.getAttribute(e, "minTermFrequency", DEFAULT_MIN_TERM_FREQUENCY));
mlt.setPercentTermsToMatch(DOMUtils.getAttribute(e, "percentTermsToMatch", DEFAULT_PERCENT_TERMS_TO_MATCH) / 100);
mlt.setStopWords(stopWordsSet);
int minDocFreq = DOMUtils.getAttribute(e, "minDocFreq", -1);
if (minDocFreq >= 0) {
mlt.setMinDocFreq(minDocFreq);
}
mlt.setBoost(DOMUtils.getAttribute(e, "boost", 1.0f));
return mlt;
}
示例3: getQuery
import org.apache.lucene.queries.mlt.MoreLikeThisQuery; //导入依赖的package包/类
@Override
public Query getQuery(Element e) throws ParserException {
String fieldsList = e.getAttribute("fieldNames"); //a comma-delimited list of fields
String fields[] = defaultFieldNames;
if ((fieldsList != null) && (fieldsList.trim().length() > 0)) {
fields = fieldsList.trim().split(",");
//trim the fieldnames
for (int i = 0; i < fields.length; i++) {
fields[i] = fields[i].trim();
}
}
//Parse any "stopWords" attribute
//TODO MoreLikeThis needs to ideally have per-field stopWords lists - until then
//I use all analyzers/fields to generate multi-field compatible stop list
String stopWords = e.getAttribute("stopWords");
Set<String> stopWordsSet = null;
if ((stopWords != null) && (fields != null)) {
stopWordsSet = new HashSet<String>();
for (String field : fields) {
TokenStream ts = null;
try {
ts = analyzer.tokenStream(field, stopWords);
CharTermAttribute termAtt = ts.addAttribute(CharTermAttribute.class);
ts.reset();
while (ts.incrementToken()) {
stopWordsSet.add(termAtt.toString());
}
ts.end();
} catch (IOException ioe) {
throw new ParserException("IoException parsing stop words list in "
+ getClass().getName() + ":" + ioe.getLocalizedMessage());
} finally {
IOUtils.closeWhileHandlingException(ts);
}
}
}
MoreLikeThisQuery mlt = new MoreLikeThisQuery(DOMUtils.getText(e), fields, analyzer, fields[0]);
mlt.setMaxQueryTerms(DOMUtils.getAttribute(e, "maxQueryTerms", DEFAULT_MAX_QUERY_TERMS));
mlt.setMinTermFrequency(DOMUtils.getAttribute(e, "minTermFrequency", DEFAULT_MIN_TERM_FREQUENCY));
mlt.setPercentTermsToMatch(DOMUtils.getAttribute(e, "percentTermsToMatch", DEFAULT_PERCENT_TERMS_TO_MATCH) / 100);
mlt.setStopWords(stopWordsSet);
int minDocFreq = DOMUtils.getAttribute(e, "minDocFreq", -1);
if (minDocFreq >= 0) {
mlt.setMinDocFreq(minDocFreq);
}
mlt.setBoost(DOMUtils.getAttribute(e, "boost", 1.0f));
return mlt;
}