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Allow highlighting on wildcard fields.. ie, comment_* 

closes #2396
This commit is contained in:
Shay Banon 2012-12-26 14:55:44 -08:00
parent 4b69846ba2
commit 2f4b759df7
3 changed files with 236 additions and 186 deletions
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16
src/main/java/org/elasticsearch/index/mapper/DocumentFieldMappers.java
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@ -129,7 +129,7 @@ public class DocumentFieldMappers implements Iterable<FieldMapper> {
if (Regex.simpleMatch(pattern, fieldMapper.names().fullName())) {
fields.add(fieldMapper.names().indexName());
} else if (Regex.simpleMatch(pattern, fieldMapper.names().indexName())) {
fields.add(fieldMapper.names().name());
fields.add(fieldMapper.names().indexName());
} else if (Regex.simpleMatch(pattern, fieldMapper.names().name())) {
fields.add(fieldMapper.names().indexName());
}
@ -137,6 +137,20 @@ public class DocumentFieldMappers implements Iterable<FieldMapper> {
return fields;
}
public Set<String> simpleMatchToFullName(String pattern) {
Set<String> fields = Sets.newHashSet();
for (FieldMapper fieldMapper : fieldMappers) {
if (Regex.simpleMatch(pattern, fieldMapper.names().fullName())) {
fields.add(fieldMapper.names().fullName());
} else if (Regex.simpleMatch(pattern, fieldMapper.names().indexName())) {
fields.add(fieldMapper.names().fullName());
} else if (Regex.simpleMatch(pattern, fieldMapper.names().name())) {
fields.add(fieldMapper.names().fullName());
}
}
return fields;
}
/**
* Tries to find first based on {@link #fullName(String)}, then by {@link #indexName(String)}, and last
* by {@link #name(String)}.

382
src/main/java/org/elasticsearch/search/highlight/HighlightPhase.java
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@ -34,6 +34,7 @@ import org.elasticsearch.common.component.AbstractComponent;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.io.FastStringReader;
import org.elasticsearch.common.lucene.search.vectorhighlight.SimpleBoundaryScanner2;
import org.elasticsearch.common.regex.Regex;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.text.StringText;
import org.elasticsearch.index.fieldvisitor.CustomFieldsVisitor;
@ -109,213 +110,224 @@ public class HighlightPhase extends AbstractComponent implements FetchSubPhase {
} else {
encoder = Encoders.DEFAULT;
}
FieldMapper mapper = documentMapper.mappers().smartNameFieldMapper(field.field());
if (mapper == null) {
MapperService.SmartNameFieldMappers fullMapper = context.mapperService().smartName(field.field());
if (fullMapper == null || !fullMapper.hasDocMapper()) {
//Save skipping missing fields
continue;
}
if (!fullMapper.docMapper().type().equals(hitContext.hit().type())) {
continue;
}
mapper = fullMapper.mapper();
Set<String> fieldNamesToHighlight;
if (Regex.isSimpleMatchPattern(field.field())) {
fieldNamesToHighlight = documentMapper.mappers().simpleMatchToFullName(field.field());
} else {
fieldNamesToHighlight = ImmutableSet.of(field.field());
}
for (String fieldName : fieldNamesToHighlight) {
FieldMapper mapper = documentMapper.mappers().smartNameFieldMapper(fieldName);
if (mapper == null) {
continue;
}
}
boolean useFastVectorHighlighter;
if (field.highlighterType() == null) {
// if we can do highlighting using Term Vectors, use FastVectorHighlighter, otherwise, use the
// slower plain highlighter
useFastVectorHighlighter = mapper.fieldType().storeTermVectors() && mapper.fieldType().storeTermVectorOffsets() && mapper.fieldType().storeTermVectorPositions();
} else if (field.highlighterType().equals("fast-vector-highlighter") || field.highlighterType().equals("fvh")) {
if (!(mapper.fieldType().storeTermVectors() && mapper.fieldType().storeTermVectorOffsets() && mapper.fieldType().storeTermVectorPositions())) {
throw new ElasticSearchIllegalArgumentException("the field [" + field.field() + "] should be indexed with term vector with position offsets to be used with fast vector highlighter");
}
useFastVectorHighlighter = true;
} else if (field.highlighterType().equals("highlighter") || field.highlighterType().equals("plain")) {
useFastVectorHighlighter = false;
} else {
throw new ElasticSearchIllegalArgumentException("unknown highlighter type [" + field.highlighterType() + "] for the field [" + field.field() + "]");
}
if (!useFastVectorHighlighter) {
MapperHighlightEntry entry = cache.mappers.get(mapper);
if (entry == null) {
// Don't use the context.query() since it might be rewritten, and we need to pass the non rewritten queries to
// let the highlighter handle MultiTerm ones
Query query = context.parsedQuery().query();
QueryScorer queryScorer = new CustomQueryScorer(query, field.requireFieldMatch() ? mapper.names().indexName() : null);
queryScorer.setExpandMultiTermQuery(true);
Fragmenter fragmenter;
if (field.numberOfFragments() == 0) {
fragmenter = new NullFragmenter();
} else if (field.fragmenter() == null) {
fragmenter = new SimpleSpanFragmenter(queryScorer, field.fragmentCharSize());
} else if ("simple".equals(field.fragmenter())) {
fragmenter = new SimpleFragmenter(field.fragmentCharSize());
} else if ("span".equals(field.fragmenter())) {
fragmenter = new SimpleSpanFragmenter(queryScorer, field.fragmentCharSize());
} else {
throw new ElasticSearchIllegalArgumentException("unknown fragmenter option [" + field.fragmenter() + "] for the field [" + field.field() + "]");
MapperService.SmartNameFieldMappers fullMapper = context.mapperService().smartName(fieldName);
if (fullMapper == null || !fullMapper.hasDocMapper()) {
//Save skipping missing fields
continue;
}
Formatter formatter = new SimpleHTMLFormatter(field.preTags()[0], field.postTags()[0]);
entry = new MapperHighlightEntry();
entry.highlighter = new Highlighter(formatter, encoder, queryScorer);
entry.highlighter.setTextFragmenter(fragmenter);
// always highlight across all data
entry.highlighter.setMaxDocCharsToAnalyze(Integer.MAX_VALUE);
cache.mappers.put(mapper, entry);
}
List<Object> textsToHighlight;
if (mapper.fieldType().stored()) {
try {
CustomFieldsVisitor fieldVisitor = new CustomFieldsVisitor(ImmutableSet.of(mapper.names().indexName()), false);
hitContext.reader().document(hitContext.docId(), fieldVisitor);
textsToHighlight = fieldVisitor.fields().get(mapper.names().indexName());
} catch (Exception e) {
throw new FetchPhaseExecutionException(context, "Failed to highlight field [" + field.field() + "]", e);
if (!fullMapper.docMapper().type().equals(hitContext.hit().type())) {
continue;
}
mapper = fullMapper.mapper();
if (mapper == null) {
continue;
}
}
boolean useFastVectorHighlighter;
if (field.highlighterType() == null) {
// if we can do highlighting using Term Vectors, use FastVectorHighlighter, otherwise, use the
// slower plain highlighter
useFastVectorHighlighter = mapper.fieldType().storeTermVectors() && mapper.fieldType().storeTermVectorOffsets() && mapper.fieldType().storeTermVectorPositions();
} else if (field.highlighterType().equals("fast-vector-highlighter") || field.highlighterType().equals("fvh")) {
if (!(mapper.fieldType().storeTermVectors() && mapper.fieldType().storeTermVectorOffsets() && mapper.fieldType().storeTermVectorPositions())) {
throw new ElasticSearchIllegalArgumentException("the field [" + fieldName + "] should be indexed with term vector with position offsets to be used with fast vector highlighter");
}
useFastVectorHighlighter = true;
} else if (field.highlighterType().equals("highlighter") || field.highlighterType().equals("plain")) {
useFastVectorHighlighter = false;
} else {
SearchLookup lookup = context.lookup();
lookup.setNextReader(hitContext.readerContext());
lookup.setNextDocId(hitContext.docId());
textsToHighlight = lookup.source().extractRawValues(mapper.names().sourcePath());
throw new ElasticSearchIllegalArgumentException("unknown highlighter type [" + field.highlighterType() + "] for the field [" + fieldName + "]");
}
// a HACK to make highlighter do highlighting, even though its using the single frag list builder
int numberOfFragments = field.numberOfFragments() == 0 ? 1 : field.numberOfFragments();
ArrayList<TextFragment> fragsList = new ArrayList<TextFragment>();
try {
for (Object textToHighlight : textsToHighlight) {
String text = textToHighlight.toString();
Analyzer analyzer = context.mapperService().documentMapper(hitContext.hit().type()).mappers().indexAnalyzer();
TokenStream tokenStream = analyzer.tokenStream(mapper.names().indexName(), new FastStringReader(text));
TextFragment[] bestTextFragments = entry.highlighter.getBestTextFragments(tokenStream, text, false, numberOfFragments);
for (TextFragment bestTextFragment : bestTextFragments) {
if (bestTextFragment != null && bestTextFragment.getScore() > 0) {
fragsList.add(bestTextFragment);
}
}
}
} catch (Exception e) {
throw new FetchPhaseExecutionException(context, "Failed to highlight field [" + field.field() + "]", e);
}
if (field.scoreOrdered()) {
Collections.sort(fragsList, new Comparator<TextFragment>() {
public int compare(TextFragment o1, TextFragment o2) {
return Math.round(o2.getScore() - o1.getScore());
}
});
}
String[] fragments = null;
// number_of_fragments is set to 0 but we have a multivalued field
if (field.numberOfFragments() == 0 && textsToHighlight.size() > 1 && fragsList.size() > 0) {
fragments = new String[fragsList.size()];
for (int i = 0; i < fragsList.size(); i++) {
fragments[i] = fragsList.get(i).toString();
}
} else {
// refine numberOfFragments if needed
numberOfFragments = fragsList.size() < numberOfFragments ? fragsList.size() : numberOfFragments;
fragments = new String[numberOfFragments];
for (int i = 0; i < fragments.length; i++) {
fragments[i] = fragsList.get(i).toString();
}
}
if (fragments != null && fragments.length > 0) {
HighlightField highlightField = new HighlightField(field.field(), StringText.convertFromStringArray(fragments));
highlightFields.put(highlightField.name(), highlightField);
}
} else {
try {
if (!useFastVectorHighlighter) {
MapperHighlightEntry entry = cache.mappers.get(mapper);
FieldQuery fieldQuery = null;
if (entry == null) {
FragListBuilder fragListBuilder;
AbstractFragmentsBuilder fragmentsBuilder;
BoundaryScanner boundaryScanner = SimpleBoundaryScanner2.DEFAULT;
if (field.boundaryMaxScan() != SimpleBoundaryScanner2.DEFAULT_MAX_SCAN || field.boundaryChars() != SimpleBoundaryScanner2.DEFAULT_BOUNDARY_CHARS) {
boundaryScanner = new SimpleBoundaryScanner2(field.boundaryMaxScan(), field.boundaryChars());
}
// Don't use the context.query() since it might be rewritten, and we need to pass the non rewritten queries to
// let the highlighter handle MultiTerm ones
Query query = context.parsedQuery().query();
QueryScorer queryScorer = new CustomQueryScorer(query, field.requireFieldMatch() ? mapper.names().indexName() : null);
queryScorer.setExpandMultiTermQuery(true);
Fragmenter fragmenter;
if (field.numberOfFragments() == 0) {
fragListBuilder = new SingleFragListBuilder();
if (mapper.fieldType().stored()) {
fragmentsBuilder = new XSimpleFragmentsBuilder(field.preTags(), field.postTags(), boundaryScanner);
} else {
fragmentsBuilder = new SourceSimpleFragmentsBuilder(mapper, context, field.preTags(), field.postTags(), boundaryScanner);
}
fragmenter = new NullFragmenter();
} else if (field.fragmenter() == null) {
fragmenter = new SimpleSpanFragmenter(queryScorer, field.fragmentCharSize());
} else if ("simple".equals(field.fragmenter())) {
fragmenter = new SimpleFragmenter(field.fragmentCharSize());
} else if ("span".equals(field.fragmenter())) {
fragmenter = new SimpleSpanFragmenter(queryScorer, field.fragmentCharSize());
} else {
if (field.fragmentOffset() == -1)
fragListBuilder = new SimpleFragListBuilder();
else
fragListBuilder = new SimpleFragListBuilder(field.fragmentOffset());
throw new ElasticSearchIllegalArgumentException("unknown fragmenter option [" + field.fragmenter() + "] for the field [" + fieldName + "]");
}
Formatter formatter = new SimpleHTMLFormatter(field.preTags()[0], field.postTags()[0]);
if (field.scoreOrdered()) {
if (mapper.fieldType().stored()) {
fragmentsBuilder = new XScoreOrderFragmentsBuilder(field.preTags(), field.postTags(), boundaryScanner);
} else {
fragmentsBuilder = new SourceScoreOrderFragmentsBuilder(mapper, context, field.preTags(), field.postTags(), boundaryScanner);
entry = new MapperHighlightEntry();
entry.highlighter = new Highlighter(formatter, encoder, queryScorer);
entry.highlighter.setTextFragmenter(fragmenter);
// always highlight across all data
entry.highlighter.setMaxDocCharsToAnalyze(Integer.MAX_VALUE);
cache.mappers.put(mapper, entry);
}
List<Object> textsToHighlight;
if (mapper.fieldType().stored()) {
try {
CustomFieldsVisitor fieldVisitor = new CustomFieldsVisitor(ImmutableSet.of(mapper.names().indexName()), false);
hitContext.reader().document(hitContext.docId(), fieldVisitor);
textsToHighlight = fieldVisitor.fields().get(mapper.names().indexName());
} catch (Exception e) {
throw new FetchPhaseExecutionException(context, "Failed to highlight field [" + fieldName + "]", e);
}
} else {
SearchLookup lookup = context.lookup();
lookup.setNextReader(hitContext.readerContext());
lookup.setNextDocId(hitContext.docId());
textsToHighlight = lookup.source().extractRawValues(mapper.names().sourcePath());
}
// a HACK to make highlighter do highlighting, even though its using the single frag list builder
int numberOfFragments = field.numberOfFragments() == 0 ? 1 : field.numberOfFragments();
ArrayList<TextFragment> fragsList = new ArrayList<TextFragment>();
try {
for (Object textToHighlight : textsToHighlight) {
String text = textToHighlight.toString();
Analyzer analyzer = context.mapperService().documentMapper(hitContext.hit().type()).mappers().indexAnalyzer();
TokenStream tokenStream = analyzer.tokenStream(mapper.names().indexName(), new FastStringReader(text));
TextFragment[] bestTextFragments = entry.highlighter.getBestTextFragments(tokenStream, text, false, numberOfFragments);
for (TextFragment bestTextFragment : bestTextFragments) {
if (bestTextFragment != null && bestTextFragment.getScore() > 0) {
fragsList.add(bestTextFragment);
}
} else {
}
}
} catch (Exception e) {
throw new FetchPhaseExecutionException(context, "Failed to highlight field [" + fieldName + "]", e);
}
if (field.scoreOrdered()) {
Collections.sort(fragsList, new Comparator<TextFragment>() {
public int compare(TextFragment o1, TextFragment o2) {
return Math.round(o2.getScore() - o1.getScore());
}
});
}
String[] fragments = null;
// number_of_fragments is set to 0 but we have a multivalued field
if (field.numberOfFragments() == 0 && textsToHighlight.size() > 1 && fragsList.size() > 0) {
fragments = new String[fragsList.size()];
for (int i = 0; i < fragsList.size(); i++) {
fragments[i] = fragsList.get(i).toString();
}
} else {
// refine numberOfFragments if needed
numberOfFragments = fragsList.size() < numberOfFragments ? fragsList.size() : numberOfFragments;
fragments = new String[numberOfFragments];
for (int i = 0; i < fragments.length; i++) {
fragments[i] = fragsList.get(i).toString();
}
}
if (fragments != null && fragments.length > 0) {
HighlightField highlightField = new HighlightField(fieldName, StringText.convertFromStringArray(fragments));
highlightFields.put(highlightField.name(), highlightField);
}
} else {
try {
MapperHighlightEntry entry = cache.mappers.get(mapper);
FieldQuery fieldQuery = null;
if (entry == null) {
FragListBuilder fragListBuilder;
AbstractFragmentsBuilder fragmentsBuilder;
BoundaryScanner boundaryScanner = SimpleBoundaryScanner2.DEFAULT;
if (field.boundaryMaxScan() != SimpleBoundaryScanner2.DEFAULT_MAX_SCAN || field.boundaryChars() != SimpleBoundaryScanner2.DEFAULT_BOUNDARY_CHARS) {
boundaryScanner = new SimpleBoundaryScanner2(field.boundaryMaxScan(), field.boundaryChars());
}
if (field.numberOfFragments() == 0) {
fragListBuilder = new SingleFragListBuilder();
if (mapper.fieldType().stored()) {
fragmentsBuilder = new XSimpleFragmentsBuilder(field.preTags(), field.postTags(), boundaryScanner);
} else {
fragmentsBuilder = new SourceSimpleFragmentsBuilder(mapper, context, field.preTags(), field.postTags(), boundaryScanner);
}
} else {
if (field.fragmentOffset() == -1)
fragListBuilder = new SimpleFragListBuilder();
else
fragListBuilder = new SimpleFragListBuilder(field.fragmentOffset());
if (field.scoreOrdered()) {
if (mapper.fieldType().stored()) {
fragmentsBuilder = new XScoreOrderFragmentsBuilder(field.preTags(), field.postTags(), boundaryScanner);
} else {
fragmentsBuilder = new SourceScoreOrderFragmentsBuilder(mapper, context, field.preTags(), field.postTags(), boundaryScanner);
}
} else {
if (mapper.fieldType().stored()) {
fragmentsBuilder = new XSimpleFragmentsBuilder(field.preTags(), field.postTags(), boundaryScanner);
} else {
fragmentsBuilder = new SourceSimpleFragmentsBuilder(mapper, context, field.preTags(), field.postTags(), boundaryScanner);
}
}
}
}
fragmentsBuilder.setDiscreteMultiValueHighlighting(termVectorMultiValue);
entry = new MapperHighlightEntry();
entry.fragListBuilder = fragListBuilder;
entry.fragmentsBuilder = fragmentsBuilder;
if (cache.fvh == null) {
// parameters to FVH are not requires since:
// first two booleans are not relevant since they are set on the CustomFieldQuery (phrase and fieldMatch)
// fragment builders are used explicitly
cache.fvh = new FastVectorHighlighter();
}
CustomFieldQuery.highlightFilters.set(field.highlightFilter());
if (field.requireFieldMatch()) {
if (cache.fieldMatchFieldQuery == null) {
// we use top level reader to rewrite the query against all readers, with use caching it across hits (and across readers...)
cache.fieldMatchFieldQuery = new CustomFieldQuery(context.parsedQuery().query(), hitContext.topLevelReader(), true, field.requireFieldMatch());
fragmentsBuilder.setDiscreteMultiValueHighlighting(termVectorMultiValue);
entry = new MapperHighlightEntry();
entry.fragListBuilder = fragListBuilder;
entry.fragmentsBuilder = fragmentsBuilder;
if (cache.fvh == null) {
// parameters to FVH are not requires since:
// first two booleans are not relevant since they are set on the CustomFieldQuery (phrase and fieldMatch)
// fragment builders are used explicitly
cache.fvh = new FastVectorHighlighter();
}
fieldQuery = cache.fieldMatchFieldQuery;
} else {
if (cache.noFieldMatchFieldQuery == null) {
// we use top level reader to rewrite the query against all readers, with use caching it across hits (and across readers...)
cache.noFieldMatchFieldQuery = new CustomFieldQuery(context.parsedQuery().query(), hitContext.topLevelReader(), true, field.requireFieldMatch());
CustomFieldQuery.highlightFilters.set(field.highlightFilter());
if (field.requireFieldMatch()) {
if (cache.fieldMatchFieldQuery == null) {
// we use top level reader to rewrite the query against all readers, with use caching it across hits (and across readers...)
cache.fieldMatchFieldQuery = new CustomFieldQuery(context.parsedQuery().query(), hitContext.topLevelReader(), true, field.requireFieldMatch());
}
fieldQuery = cache.fieldMatchFieldQuery;
} else {
if (cache.noFieldMatchFieldQuery == null) {
// we use top level reader to rewrite the query against all readers, with use caching it across hits (and across readers...)
cache.noFieldMatchFieldQuery = new CustomFieldQuery(context.parsedQuery().query(), hitContext.topLevelReader(), true, field.requireFieldMatch());
}
fieldQuery = cache.noFieldMatchFieldQuery;
}
fieldQuery = cache.noFieldMatchFieldQuery;
cache.mappers.put(mapper, entry);
}
cache.mappers.put(mapper, entry);
String[] fragments;
// a HACK to make highlighter do highlighting, even though its using the single frag list builder
int numberOfFragments = field.numberOfFragments() == 0 ? Integer.MAX_VALUE : field.numberOfFragments();
int fragmentCharSize = field.numberOfFragments() == 0 ? Integer.MAX_VALUE : field.fragmentCharSize();
// we highlight against the low level reader and docId, because if we load source, we want to reuse it if possible
fragments = cache.fvh.getBestFragments(fieldQuery, hitContext.reader(), hitContext.docId(), mapper.names().indexName(), fragmentCharSize, numberOfFragments,
entry.fragListBuilder, entry.fragmentsBuilder, field.preTags(), field.postTags(), encoder);
if (fragments != null && fragments.length > 0) {
HighlightField highlightField = new HighlightField(fieldName, StringText.convertFromStringArray(fragments));
highlightFields.put(highlightField.name(), highlightField);
}
} catch (Exception e) {
throw new FetchPhaseExecutionException(context, "Failed to highlight field [" + fieldName + "]", e);
}
String[] fragments;
// a HACK to make highlighter do highlighting, even though its using the single frag list builder
int numberOfFragments = field.numberOfFragments() == 0 ? Integer.MAX_VALUE : field.numberOfFragments();
int fragmentCharSize = field.numberOfFragments() == 0 ? Integer.MAX_VALUE : field.fragmentCharSize();
// we highlight against the low level reader and docId, because if we load source, we want to reuse it if possible
fragments = cache.fvh.getBestFragments(fieldQuery, hitContext.reader(), hitContext.docId(), mapper.names().indexName(), fragmentCharSize, numberOfFragments,
entry.fragListBuilder, entry.fragmentsBuilder, field.preTags(), field.postTags(), encoder);
if (fragments != null && fragments.length > 0) {
HighlightField highlightField = new HighlightField(field.field(), StringText.convertFromStringArray(fragments));
highlightFields.put(highlightField.name(), highlightField);
}
} catch (Exception e) {
throw new FetchPhaseExecutionException(context, "Failed to highlight field [" + field.field() + "]", e);
}
}
}

24
src/test/java/org/elasticsearch/test/integration/search/highlight/HighlighterSearchTests.java
View File

@ -257,6 +257,30 @@ public class HighlighterSearchTests extends AbstractNodesTests {
assertThat(search.hits().hits()[0].highlightFields().get("titleTV").fragments()[1].string(), equalTo("<em>highlight</em> other text"));
}
@Test
public void testHighlightingOnWildcardFields() throws Exception {
client.admin().indices().prepareDelete().execute().actionGet();
client.admin().indices().prepareCreate("test").execute().actionGet();
client.admin().cluster().prepareHealth("test").setWaitForGreenStatus().execute().actionGet();
client.prepareIndex("test", "type1")
.setSource("field1", "this is a test", "field2", "this is another test")
.setRefresh(true).execute().actionGet();
logger.info("--> highlighting and searching on field*");
SearchSourceBuilder source = searchSource()
.query(termQuery("field1", "test"))
.from(0).size(60).explain(true)
.highlight(highlight().field("field*").order("score").preTags("<xxx>").postTags("</xxx>"));
SearchResponse searchResponse = client.search(searchRequest("test").source(source).searchType(QUERY_THEN_FETCH).scroll(timeValueMinutes(10))).actionGet();
assertThat("Failures " + Arrays.toString(searchResponse.shardFailures()), searchResponse.shardFailures().length, equalTo(0));
assertThat(searchResponse.hits().totalHits(), equalTo(1l));
assertThat(searchResponse.hits().getAt(0).highlightFields().get("field1").fragments()[0].string(), equalTo("this is a <xxx>test</xxx>"));
assertThat(searchResponse.hits().getAt(0).highlightFields().get("field2").fragments()[0].string(), equalTo("this is another <xxx>test</xxx>"));
}
@Test
public void testPlainHighlighter() throws Exception {
try {