Class MultiFieldQueryParserWrapper
- java.lang.Object
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- org.apache.lucene.queryParser.standard.QueryParserWrapper
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- org.apache.lucene.queryParser.standard.MultiFieldQueryParserWrapper
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@Deprecated public class MultiFieldQueryParserWrapper extends QueryParserWrapper
Deprecated.this class will be removed soon, it's a temporary class to be used along the transition from the old query parser to the new oneThis class behaves as the as the lucene 2.4 MultiFieldQueryParser class, but uses the new query parser interface instead of the old one.
This class should be used when the new query parser features are needed and also keep at the same time the old query parser interface.
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Nested Class Summary
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Nested classes/interfaces inherited from class org.apache.lucene.queryParser.standard.QueryParserWrapper
QueryParserWrapper.Operator
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Field Summary
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Fields inherited from class org.apache.lucene.queryParser.standard.QueryParserWrapper
AND_OPERATOR, OR_OPERATOR
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Constructor Summary
Constructors Constructor Description MultiFieldQueryParserWrapper(String[] fields, Analyzer analyzer)
Deprecated.Creates a MultiFieldQueryParser.MultiFieldQueryParserWrapper(String[] fields, Analyzer analyzer, Map<String,Float> boosts)
Deprecated.Creates a MultiFieldQueryParser.
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Method Summary
All Methods Static Methods Concrete Methods Deprecated Methods Modifier and Type Method Description static Query
parse(String[] queries, String[] fields, Analyzer analyzer)
Deprecated.Parses a query which searches on the fields specified.static Query
parse(String[] queries, String[] fields, BooleanClause.Occur[] flags, Analyzer analyzer)
Deprecated.Parses a query, searching on the fields specified.static Query
parse(String query, String[] fields, BooleanClause.Occur[] flags, Analyzer analyzer)
Deprecated.Parses a query, searching on the fields specified.-
Methods inherited from class org.apache.lucene.queryParser.standard.QueryParserWrapper
escape, generateParseException, getAllowLeadingWildcard, getAnalyzer, getBooleanQuery, getDateResolution, getDefaultOperator, getEnablePositionIncrements, getField, getFieldQuery, getFieldQuery, getFieldQuery, getFuzzyMinSim, getFuzzyPrefixLength, getFuzzyQuery, getLocale, getLowercaseExpandedTerms, getMultiTermRewriteMethod, getPhraseSlop, getPrefixQuery, getQueryConfigHandler, getQueryProcessor, getRangeCollator, getRangeQuery, getUseOldRangeQuery, getWildcardQuery, parse, setAllowLeadingWildcard, setDateResolution, setDateResolution, setDefaultOperator, setEnablePositionIncrements, setFuzzyMinSim, setFuzzyPrefixLength, setLocale, setLowercaseExpandedTerms, setMultiTermRewriteMethod, setPhraseSlop, setQueryBuilder, setQueryConfig, setQueryProcessor, setRangeCollator, setUseOldRangeQuery
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Constructor Detail
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MultiFieldQueryParserWrapper
public MultiFieldQueryParserWrapper(String[] fields, Analyzer analyzer, Map<String,Float> boosts)
Deprecated.Creates a MultiFieldQueryParser. Allows passing of a map with term to Boost, and the boost to apply to each term.It will, when parse(String query) is called, construct a query like this (assuming the query consists of two terms and you specify the two fields
title
andbody
):(title:term1 body:term1) (title:term2 body:term2)
When setDefaultOperator(AND_OPERATOR) is set, the result will be:
+(title:term1 body:term1) +(title:term2 body:term2)
When you pass a boost (title=>5 body=>10) you can get
+(title:term1^5.0 body:term1^10.0) +(title:term2^5.0 body:term2^10.0)
In other words, all the query's terms must appear, but it doesn't matter in what fields they appear.
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MultiFieldQueryParserWrapper
public MultiFieldQueryParserWrapper(String[] fields, Analyzer analyzer)
Deprecated.Creates a MultiFieldQueryParser.It will, when parse(String query) is called, construct a query like this (assuming the query consists of two terms and you specify the two fields
title
andbody
):(title:term1 body:term1) (title:term2 body:term2)
When setDefaultOperator(AND_OPERATOR) is set, the result will be:
+(title:term1 body:term1) +(title:term2 body:term2)
In other words, all the query's terms must appear, but it doesn't matter in what fields they appear.
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Method Detail
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parse
public static Query parse(String[] queries, String[] fields, Analyzer analyzer) throws ParseException
Deprecated.Parses a query which searches on the fields specified.If x fields are specified, this effectively constructs:
<code> (field1:query1) (field2:query2) (field3:query3)...(fieldx:queryx) </code>
- Parameters:
queries
- Queries strings to parsefields
- Fields to search onanalyzer
- Analyzer to use- Throws:
ParseException
- if query parsing failsIllegalArgumentException
- if the length of the queries array differs from the length of the fields array
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parse
public static Query parse(String query, String[] fields, BooleanClause.Occur[] flags, Analyzer analyzer) throws ParseException
Deprecated.Parses a query, searching on the fields specified. Use this if you need to specify certain fields as required, and others as prohibited.Usage: <code> String[] fields = {"filename", "contents", "description"}; BooleanClause.Occur[] flags = {BooleanClause.Occur.SHOULD, BooleanClause.Occur.MUST, BooleanClause.Occur.MUST_NOT}; MultiFieldQueryParser.parse("query", fields, flags, analyzer); </code>
The code above would construct a query:
<code> (filename:query) +(contents:query) -(description:query) </code>
- Parameters:
query
- Query string to parsefields
- Fields to search onflags
- Flags describing the fieldsanalyzer
- Analyzer to use- Throws:
ParseException
- if query parsing failsIllegalArgumentException
- if the length of the fields array differs from the length of the flags array
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parse
public static Query parse(String[] queries, String[] fields, BooleanClause.Occur[] flags, Analyzer analyzer) throws ParseException
Deprecated.Parses a query, searching on the fields specified. Use this if you need to specify certain fields as required, and others as prohibited.Usage: <code> String[] query = {"query1", "query2", "query3"}; String[] fields = {"filename", "contents", "description"}; BooleanClause.Occur[] flags = {BooleanClause.Occur.SHOULD, BooleanClause.Occur.MUST, BooleanClause.Occur.MUST_NOT}; MultiFieldQueryParser.parse(query, fields, flags, analyzer); </code>
The code above would construct a query:
<code> (filename:query1) +(contents:query2) -(description:query3) </code>
- Parameters:
queries
- Queries string to parsefields
- Fields to search onflags
- Flags describing the fieldsanalyzer
- Analyzer to use- Throws:
ParseException
- if query parsing failsIllegalArgumentException
- if the length of the queries, fields, and flags array differ
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