java.lang.Object
- org.apache.solr.search.QParser
- - org.apache.solr.search.DisMaxQParser

```
public class DisMaxQParser
extends QParser
```
Query parser for dismax queries
Note: This API is experimental and may change in non backward-compatible ways in the future

Field Summary

Fields
Modifier and Type	Field	Description
`protected org.apache.lucene.search.Query`	`altUserQuery`
`protected String[]`	`boostParams`
`protected List<org.apache.lucene.search.Query>`	`boostQueries`
`protected org.apache.lucene.search.Query`	`parsedUserQuery`
`protected Map<String,Float>`	`queryFields`

Fields inherited from class org.apache.solr.search.QParser
FLAG_FILTER, flags, localParams, localParamsEnd, params, qstr, query, recurseCount, req, stringIncludingLocalParams, valFollowedParams

Constructor Summary

Constructors
Constructor Description

DisMaxQParser(String qstr, SolrParams localParams, SolrParams params, SolrQueryRequest req)

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected void`	`addBoostFunctions(org.apache.lucene.search.BooleanQuery.Builder query, SolrParams solrParams)`
`protected void`	`addBoostQuery(org.apache.lucene.search.BooleanQuery.Builder query, SolrParams solrParams)`
`void`	`addDebugInfo(NamedList<Object> debugInfo)`
`protected boolean`	`addMainQuery(org.apache.lucene.search.BooleanQuery.Builder query, SolrParams solrParams)`	Adds the main query to the query argument.
`protected org.apache.lucene.search.Query`	`getAlternateUserQuery(SolrParams solrParams)`
`String[]`	`getDefaultHighlightFields()`
`org.apache.lucene.search.Query`	`getHighlightQuery()`
`protected SolrPluginUtils.DisjunctionMaxQueryParser`	`getParser(Map<String,Float> fields, String paramName, SolrParams solrParams, float tiebreaker)`
`protected org.apache.lucene.search.Query`	`getPhraseQuery(String userQuery, SolrPluginUtils.DisjunctionMaxQueryParser pp)`
`protected org.apache.lucene.search.Query`	`getUserQuery(String userQuery, SolrPluginUtils.DisjunctionMaxQueryParser up, SolrParams solrParams)`
`org.apache.lucene.search.Query`	`parse()`	Create and return the `Query` object represented by `qstr`.
`static String`	`parseMinShouldMatch(IndexSchema schema, SolrParams params)`	Applies the appropriate default rules for the "mm" param based on the effective value of the "q.op" param
`static Map<String,Float>`	`parseQueryFields(IndexSchema indexSchema, SolrParams solrParams)`	Uses `SolrPluginUtils.parseFieldBoosts(String)` with the 'qf' parameter.

Methods inherited from class org.apache.solr.search.QParser
getFlags, getLocalParams, getParam, getParams, getParser, getParser, getParser, getQuery, getReq, getSortSpec, getString, isFilter, setFlags, setIsFilter, setLocalParams, setParams, setReq, setString, subQuery

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

queryFields

protected Map<String,Float> queryFields

parsedUserQuery

protected org.apache.lucene.search.Query parsedUserQuery

boostParams
```
protected String[] boostParams
```

boostQueries

protected List<org.apache.lucene.search.Query> boostQueries

altUserQuery

protected org.apache.lucene.search.Query altUserQuery

Constructor Detail

DisMaxQParser

public DisMaxQParser(String qstr,
                     SolrParams localParams,
                     SolrParams params,
                     SolrQueryRequest req)

Method Detail

parseMinShouldMatch

public static String parseMinShouldMatch(IndexSchema schema,
                                         SolrParams params)

Applies the appropriate default rules for the "mm" param based on the effective value of the "q.op" param

See Also:: QueryParsing.OP, DisMaxParams.MM

parseQueryFields

public static Map<String,Float> parseQueryFields(IndexSchema indexSchema,
                                                       SolrParams solrParams)
                                                throws SyntaxError

Uses SolrPluginUtils.parseFieldBoosts(String) with the 'qf' parameter. Falls back to the 'df' parameter

Throws:: SyntaxError

parse
```
public org.apache.lucene.search.Query parse()
                                     throws SyntaxError
```
Description copied from class: QParser

Create and return the Query object represented by qstr. Null MAY be returned to signify there was no input (e.g. no query string) to parse.

Specified by:

parse in class QParser

Throws:

SyntaxError

See Also:

QParser.getQuery()

addBoostFunctions

protected void addBoostFunctions(org.apache.lucene.search.BooleanQuery.Builder query,
                                 SolrParams solrParams)
                          throws SyntaxError

Throws:: SyntaxError

addBoostQuery

protected void addBoostQuery(org.apache.lucene.search.BooleanQuery.Builder query,
                             SolrParams solrParams)
                      throws SyntaxError

Throws:: SyntaxError

addMainQuery

protected boolean addMainQuery(org.apache.lucene.search.BooleanQuery.Builder query,
                               SolrParams solrParams)
                        throws SyntaxError

Adds the main query to the query argument. If it's blank then false is returned.

Throws:: SyntaxError

getAlternateUserQuery

protected org.apache.lucene.search.Query getAlternateUserQuery(SolrParams solrParams)
                                                        throws SyntaxError

Throws:: SyntaxError

getPhraseQuery

protected org.apache.lucene.search.Query getPhraseQuery(String userQuery,
                                                        SolrPluginUtils.DisjunctionMaxQueryParser pp)
                                                 throws SyntaxError

Throws:: SyntaxError

getUserQuery

protected org.apache.lucene.search.Query getUserQuery(String userQuery,
                                                      SolrPluginUtils.DisjunctionMaxQueryParser up,
                                                      SolrParams solrParams)
                                               throws SyntaxError

Throws:: SyntaxError

getParser

protected SolrPluginUtils.DisjunctionMaxQueryParser getParser(Map<String,Float> fields,
                                                              String paramName,
                                                              SolrParams solrParams,
                                                              float tiebreaker)

getDefaultHighlightFields
```
public String[] getDefaultHighlightFields()
```
Overrides:

getDefaultHighlightFields in class QParser

getHighlightQuery

public org.apache.lucene.search.Query getHighlightQuery()
                                                 throws SyntaxError

Overrides:: getHighlightQuery in class QParser
Throws:: SyntaxError

addDebugInfo

public void addDebugInfo(NamedList<Object> debugInfo)

Overrides:: addDebugInfo in class QParser

Class DisMaxQParser