public final class QueryParserUtil extends Object
Query
objects.Constructor and Description |
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QueryParserUtil() |
Modifier and Type | Method and Description |
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static String |
escape(String s)
Returns a String where those characters that TextParser expects to be
escaped are escaped by a preceding
\ . |
static org.apache.lucene.search.Query |
parse(String[] queries,
String[] fields,
org.apache.lucene.analysis.Analyzer analyzer)
Parses a query which searches on the fields specified.
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static org.apache.lucene.search.Query |
parse(String[] queries,
String[] fields,
org.apache.lucene.search.BooleanClause.Occur[] flags,
org.apache.lucene.analysis.Analyzer analyzer)
Parses a query, searching on the fields specified.
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static org.apache.lucene.search.Query |
parse(String query,
String[] fields,
org.apache.lucene.search.BooleanClause.Occur[] flags,
org.apache.lucene.analysis.Analyzer analyzer)
Parses a query, searching on the fields specified.
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public static org.apache.lucene.search.Query parse(String[] queries, String[] fields, org.apache.lucene.analysis.Analyzer analyzer) throws QueryNodeException
If x fields are specified, this effectively constructs:
<code> (field1:query1) (field2:query2) (field3:query3)...(fieldx:queryx) </code>
queries
- Queries strings to parsefields
- Fields to search onanalyzer
- Analyzer to useIllegalArgumentException
- if the length of the queries array differs from the length of the
fields arrayQueryNodeException
public static org.apache.lucene.search.Query parse(String query, String[] fields, org.apache.lucene.search.BooleanClause.Occur[] flags, org.apache.lucene.analysis.Analyzer analyzer) throws QueryNodeException
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>
query
- Query string to parsefields
- Fields to search onflags
- Flags describing the fieldsanalyzer
- Analyzer to useIllegalArgumentException
- if the length of the fields array differs from the length of the
flags arrayQueryNodeException
public static org.apache.lucene.search.Query parse(String[] queries, String[] fields, org.apache.lucene.search.BooleanClause.Occur[] flags, org.apache.lucene.analysis.Analyzer analyzer) throws QueryNodeException
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>
queries
- Queries string to parsefields
- Fields to search onflags
- Flags describing the fieldsanalyzer
- Analyzer to useIllegalArgumentException
- if the length of the queries, fields, and flags array differQueryNodeException