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java.lang.Object org.apache.solr.spelling.QueryConverter
public abstract class QueryConverter
The QueryConverter is an abstract base class defining a method for converting input "raw" queries into a set of tokens for spell checking. It is used to "parse" the CommonParams.Q (the input query) and converts it to tokens.
It is only invoked for the CommonParams.Q parameter, and not the "spellcheck.q" parameter. Systems that use their own query parser or those that find issue with the basic implementation should implement their own QueryConverter instead of using the provided implementation (SpellingQueryConverter) by overriding the appropriate methods on the SpellingQueryConverter and registering it in the solrconfig.xml
Refer to SpellCheckComponent for more details
Field Summary | |
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protected Analyzer |
analyzer
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static int |
PROHIBITED_TERM_FLAG
This term is marked prohibited in the query with the minus sign. |
static int |
REQUIRED_TERM_FLAG
This term is marked required in the query with the plus sign. |
static int |
TERM_IN_BOOLEAN_QUERY_FLAG
This term exists in a query that contains boolean operators (AND/OR/NOT) |
static int |
TERM_PRECEDES_NEW_BOOLEAN_OPERATOR_FLAG
This term is directly followed by a boolean operator (AND/OR/NOT) and this operator differs from the prior boolean operator in the query (this signifies this term is likely part of a different query clause than the next term in the query) |
Constructor Summary | |
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QueryConverter()
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Method Summary | |
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abstract Collection<Token> |
convert(String original)
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Analyzer |
getAnalyzer()
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void |
init(NamedList args)
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void |
setAnalyzer(Analyzer analyzer)
Set the analyzer to use. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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protected Analyzer analyzer
public static final int PROHIBITED_TERM_FLAG
This term is marked prohibited in the query with the minus sign.
public static final int REQUIRED_TERM_FLAG
This term is marked required in the query with the plus sign.
public static final int TERM_PRECEDES_NEW_BOOLEAN_OPERATOR_FLAG
This term is directly followed by a boolean operator (AND/OR/NOT) and this operator differs from the prior boolean operator in the query (this signifies this term is likely part of a different query clause than the next term in the query)
public static final int TERM_IN_BOOLEAN_QUERY_FLAG
This term exists in a query that contains boolean operators (AND/OR/NOT)
Constructor Detail |
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public QueryConverter()
Method Detail |
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public void init(NamedList args)
init
in interface NamedListInitializedPlugin
public abstract Collection<Token> convert(String original)
original
-
Token
s for
the query. Offsets on the Token should correspond to the correct
offset in the origQuerypublic void setAnalyzer(Analyzer analyzer)
analyzer
- public Analyzer getAnalyzer()
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