@Override
public void process(ResponseBuilder rb) throws IOException {
SolrParams params = rb.req.getParams();
if (params.getBool(TermsParams.TERMS, false)) {
String lowerStr = params.get(TermsParams.TERMS_LOWER, null);
String[] fields = params.getParams(TermsParams.TERMS_FIELD);
if (fields != null && fields.length > 0) {
NamedList terms = new SimpleOrderedMap();
rb.rsp.add("terms", terms);
int limit = params.getInt(TermsParams.TERMS_LIMIT, 10);
if (limit < 0) {
limit = Integer.MAX_VALUE;
}
String upperStr = params.get(TermsParams.TERMS_UPPER);
boolean upperIncl = params.getBool(TermsParams.TERMS_UPPER_INCLUSIVE, false);
boolean lowerIncl = params.getBool(TermsParams.TERMS_LOWER_INCLUSIVE, true);
boolean sort =
!TermsParams.TERMS_SORT_INDEX.equals(
params.get(TermsParams.TERMS_SORT, TermsParams.TERMS_SORT_COUNT));
int freqmin = params.getInt(TermsParams.TERMS_MINCOUNT, 1); // initialize freqmin
int freqmax =
params.getInt(TermsParams.TERMS_MAXCOUNT, UNLIMITED_MAX_COUNT); // initialize freqmax
if (freqmax < 0) {
freqmax = Integer.MAX_VALUE;
}
String prefix = params.get(TermsParams.TERMS_PREFIX_STR);
String regexp = params.get(TermsParams.TERMS_REGEXP_STR);
Pattern pattern =
regexp != null ? Pattern.compile(regexp, resolveRegexpFlags(params)) : null;
boolean raw = params.getBool(TermsParams.TERMS_RAW, false);
for (int j = 0; j < fields.length; j++) {
String field = StringHelper.intern(fields[j]);
FieldType ft = raw ? null : rb.req.getSchema().getFieldTypeNoEx(field);
if (ft == null) ft = new StrField();
// If no lower bound was specified, use the prefix
String lower = lowerStr == null ? prefix : (raw ? lowerStr : ft.toInternal(lowerStr));
if (lower == null) lower = "";
String upper = upperStr == null ? null : (raw ? upperStr : ft.toInternal(upperStr));
Term lowerTerm = new Term(field, lower);
Term upperTerm = upper == null ? null : new Term(field, upper);
TermEnum termEnum =
rb.req
.getSearcher()
.getReader()
.terms(lowerTerm); // this will be positioned ready to go
int i = 0;
BoundedTreeSet<CountPair<String, Integer>> queue =
(sort ? new BoundedTreeSet<CountPair<String, Integer>>(limit) : null);
NamedList fieldTerms = new NamedList();
terms.add(field, fieldTerms);
Term lowerTestTerm = termEnum.term();
// Only advance the enum if we are excluding the lower bound and the lower Term actually
// matches
if (lowerTestTerm != null
&& lowerIncl == false
&& lowerTestTerm.field() == field // intern'd comparison
&& lowerTestTerm.text().equals(lower)) {
termEnum.next();
}
while (i < limit || sort) {
Term theTerm = termEnum.term();
// check for a different field, or the end of the index.
if (theTerm == null || field != theTerm.field()) // intern'd comparison
break;
String indexedText = theTerm.text();
// stop if the prefix doesn't match
if (prefix != null && !indexedText.startsWith(prefix)) break;
if (pattern != null && !pattern.matcher(indexedText).matches()) {
termEnum.next();
continue;
}
if (upperTerm != null) {
int upperCmp = theTerm.compareTo(upperTerm);
// if we are past the upper term, or equal to it (when don't include upper) then stop.
if (upperCmp > 0 || (upperCmp == 0 && !upperIncl)) break;
}
// This is a good term in the range. Check if mincount/maxcount conditions are
// satisfied.
int docFreq = termEnum.docFreq();
if (docFreq >= freqmin && docFreq <= freqmax) {
// add the term to the list
String label = raw ? indexedText : ft.indexedToReadable(indexedText);
if (sort) {
queue.add(new CountPair<String, Integer>(label, docFreq));
} else {
fieldTerms.add(label, docFreq);
i++;
}
}
termEnum.next();
}
termEnum.close();
if (sort) {
for (CountPair<String, Integer> item : queue) {
if (i < limit) {
fieldTerms.add(item.key, item.val);
i++;
} else {
break;
}
}
}
}
} else {
throw new SolrException(
SolrException.ErrorCode.BAD_REQUEST, "No terms.fl parameter specified");
}
}
}
BloomFilterLoader(IndexReader reader, String field) {
this.reader = reader;
this.field = StringHelper.intern(field);
}
public JSONWriter(Writer writer, SolrQueryRequest req, SolrQueryResponse rsp) {
super(writer, req, rsp);
namedListStyle = StringHelper.intern(req.getParams().get(JSON_NL_STYLE, JSON_NL_FLAT));
wrapperFunction = req.getParams().get(JSON_WRAPPER_FUNCTION);
}
private static float[] getFloats(FileFloatSource ffs, IndexReader reader) {
float[] vals = new float[reader.maxDoc()];
if (ffs.defVal != 0) {
Arrays.fill(vals, ffs.defVal);
}
InputStream is;
String fname = "external_" + ffs.field.getName();
try {
is = VersionedFile.getLatestFile(ffs.dataDir, fname);
} catch (IOException e) {
// log, use defaults
SolrCore.log.error("Error opening external value source file: " + e);
return vals;
}
BufferedReader r = new BufferedReader(new InputStreamReader(is));
String idName = StringHelper.intern(ffs.keyField.getName());
FieldType idType = ffs.keyField.getType();
boolean sorted = true; // assume sorted until we discover it's not
// warning: lucene's termEnum.skipTo() is not optimized... it simply does a next()
// because of this, simply ask the reader for a new termEnum rather than
// trying to use skipTo()
List<String> notFound = new ArrayList<String>();
int notFoundCount = 0;
int otherErrors = 0;
TermDocs termDocs = null;
Term protoTerm = new Term(idName, "");
TermEnum termEnum = null;
// Number of times to try termEnum.next() before resorting to skip
int numTimesNext = 10;
char delimiter = '=';
String termVal;
boolean hasNext = true;
String prevKey = "";
String lastVal = "\uFFFF\uFFFF\uFFFF\uFFFF\uFFFF\uFFFF\uFFFF\uFFFF";
try {
termDocs = reader.termDocs();
termEnum = reader.terms(protoTerm);
Term t = termEnum.term();
if (t != null && t.field() == idName) { // intern'd comparison
termVal = t.text();
} else {
termVal = lastVal;
}
for (String line; (line = r.readLine()) != null; ) {
int delimIndex = line.indexOf(delimiter);
if (delimIndex < 0) continue;
int endIndex = line.length();
/* EOLs should already be removed for BufferedReader.readLine()
for(int endIndex = line.length();endIndex>delimIndex+1; endIndex--) {
char ch = line.charAt(endIndex-1);
if (ch!='\n' && ch!='\r') break;
}
*/
String key = line.substring(0, delimIndex);
String val = line.substring(delimIndex + 1, endIndex);
String internalKey = idType.toInternal(key);
float fval;
try {
fval = Float.parseFloat(val);
} catch (Exception e) {
if (++otherErrors <= 10) {
SolrCore.log.error(
"Error loading external value source + fileName + "
+ e
+ (otherErrors < 10 ? "" : "\tSkipping future errors for this file."));
}
continue; // go to next line in file.. leave values as default.
}
if (sorted) {
// make sure this key is greater than the previous key
sorted = internalKey.compareTo(prevKey) >= 0;
prevKey = internalKey;
if (sorted) {
int countNext = 0;
for (; ; ) {
int cmp = internalKey.compareTo(termVal);
if (cmp == 0) {
termDocs.seek(termEnum);
while (termDocs.next()) {
vals[termDocs.doc()] = fval;
}
break;
} else if (cmp < 0) {
// term enum has already advanced past current key... we didn't find it.
if (notFoundCount < 10) { // collect first 10 not found for logging
notFound.add(key);
}
notFoundCount++;
break;
} else {
// termEnum is less than our current key, so skip ahead
// try next() a few times to see if we hit or pass the target.
// Lucene's termEnum.skipTo() is currently unoptimized (it just does next())
// so the best thing is to simply ask the reader for a new termEnum(target)
// if we really need to skip.
if (++countNext > numTimesNext) {
termEnum = reader.terms(protoTerm.createTerm(internalKey));
t = termEnum.term();
} else {
hasNext = termEnum.next();
t = hasNext ? termEnum.term() : null;
}
if (t != null && t.field() == idName) { // intern'd comparison
termVal = t.text();
} else {
termVal = lastVal;
}
}
} // end for(;;)
}
}
if (!sorted) {
termEnum = reader.terms(protoTerm.createTerm(internalKey));
t = termEnum.term();
if (t != null
&& t.field() == idName // intern'd comparison
&& internalKey.equals(t.text())) {
termDocs.seek(termEnum);
while (termDocs.next()) {
vals[termDocs.doc()] = fval;
}
} else {
if (notFoundCount < 10) { // collect first 10 not found for logging
notFound.add(key);
}
notFoundCount++;
}
}
}
} catch (IOException e) {
// log, use defaults
SolrCore.log.error("Error loading external value source: " + e);
} finally {
// swallow exceptions on close so we don't override any
// exceptions that happened in the loop
if (termDocs != null)
try {
termDocs.close();
} catch (Exception e) {
}
if (termEnum != null)
try {
termEnum.close();
} catch (Exception e) {
}
try {
r.close();
} catch (Exception e) {
}
}
SolrCore.log.info(
"Loaded external value source "
+ fname
+ (notFoundCount == 0 ? "" : " :" + notFoundCount + " missing keys " + notFound));
return vals;
}
