public final class QueryParserUtil extends Object
Query objects.| Constructor and Description |
|---|
QueryParserUtil() |
| Modifier and Type | Method and Description |
|---|---|
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.
|
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.
|
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.
|
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 arrayQueryNodeExceptionpublic 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 arrayQueryNodeExceptionpublic 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 differQueryNodeExceptionCopyright © 2000-2012 Apache Software Foundation. All Rights Reserved.