org.apache.solr.search

Class QParser

java.lang.Object

org.apache.solr.search.QParser

Direct Known Subclasses:

BlockJoinParentQParser, CloudMLTQParser, DisMaxQParser, ExportQParserPlugin.ExportQParser, ExtendedDismaxQParser, FunctionQParser, GraphQueryParser, LuceneQParser, SimpleMLTQParser, SpatialFilterQParser

public abstract class QParser
extends Object

Note: This API is experimental and may change in non backward-compatible ways in the future

Field Summary

Fields

Modifier and Type	Field and Description
protected SolrParams	localParams
protected int	localParamsEnd
protected SolrParams	params
protected String	qstr
protected Query	query
protected int	recurseCount
protected SolrQueryRequest	req
protected String	stringIncludingLocalParams
protected boolean	valFollowedParams

Constructor Summary

Constructors

Constructor and Description
QParser(String qstr, SolrParams localParams, SolrParams params, SolrQueryRequest req) Constructor for the QParser

Method Summary

Modifier and Type	Method and Description
void	addDebugInfo(NamedList<Object> debugInfo)
String[]	getDefaultHighlightFields()
Query	getHighlightQuery()
SolrParams	getLocalParams()
String	getParam(String name) check both local and global params
SolrParams	getParams()
static QParser	getParser(String qstr, String defaultParser, SolrQueryRequest req) Create a QParser to parse qstr, assuming that the default query parser is defaultParser.
Query	getQuery() Returns the resulting query from this QParser, calling parse() only the first time and caching the Query result.
SolrQueryRequest	getReq()
SortSpec	getSort(boolean useGlobalParams)
String	getString()
abstract Query	parse() Create and return the Query object represented by qstr.
void	setLocalParams(SolrParams localParams)
void	setParams(SolrParams params)
void	setReq(SolrQueryRequest req)
void	setString(String s)
QParser	subQuery(String q, String defaultType) Create a new QParser for parsing an embedded sub-query

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

qstr

protected String qstr

params

protected SolrParams params

localParams

protected SolrParams localParams

req

protected SolrQueryRequest req

recurseCount

protected int recurseCount

query

protected Query query

stringIncludingLocalParams

protected String stringIncludingLocalParams

valFollowedParams

protected boolean valFollowedParams

localParamsEnd

protected int localParamsEnd

Constructor Detail

QParser

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

Constructor for the QParser

Parameters:

qstr - The part of the query string specific to this parser

localParams - The set of parameters that are specific to this QParser. See http://wiki.apache.org/solr/LocalParams

params - The rest of the SolrParams

req - The original SolrQueryRequest.

Method Detail

parse

public abstract Query parse()
                     throws SyntaxError

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.

Throws:

SyntaxError

See Also:

getQuery()

getLocalParams

public SolrParams getLocalParams()

setLocalParams

public void setLocalParams(SolrParams localParams)

getParams

public SolrParams getParams()

setParams

public void setParams(SolrParams params)

getReq

public SolrQueryRequest getReq()

setReq

public void setReq(SolrQueryRequest req)

getString

public String getString()

setString

public void setString(String s)

getQuery

public Query getQuery()
               throws SyntaxError

Returns the resulting query from this QParser, calling parse() only the first time and caching the Query result.

Throws:

SyntaxError

getParam

public String getParam(String name)

check both local and global params

subQuery

public QParser subQuery(String q,
                        String defaultType)
                 throws SyntaxError

Create a new QParser for parsing an embedded sub-query

Throws:

SyntaxError

getSort

public SortSpec getSort(boolean useGlobalParams)
                 throws SyntaxError

Parameters:

useGlobalParams - look up sort, start, rows in global params if not in local params

Returns:

the sort specification

Throws:

SyntaxError

getDefaultHighlightFields

public String[] getDefaultHighlightFields()

getHighlightQuery

public Query getHighlightQuery()
                        throws SyntaxError

Throws:

SyntaxError

addDebugInfo

public void addDebugInfo(NamedList<Object> debugInfo)

getParser

public static QParser getParser(String qstr,
                                String defaultParser,
                                SolrQueryRequest req)
                         throws SyntaxError

Create a QParser to parse qstr, assuming that the default query parser is defaultParser. The query parser may be overridden by local parameters in the query string itself. For example if defaultParser="dismax" and qstr=foo, then the dismax query parser will be used to parse and construct the query object. However if qstr={!prefix f=myfield}foo then the prefix query parser will be used.

Throws:

SyntaxError