lucene-java-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Peter Veentjer - Anchor Men" <p.veent...@anchormen.nl>
Subject RE: What is going on with subversion.
Date Wed, 20 Apr 2005 13:40:47 GMT
package com.jph.lucene.parsers;

/**
 * Copyright 2004 The Apache Software Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.queryParser.MultiFieldQueryParser;
import org.apache.lucene.queryParser.ParseException;
import org.apache.lucene.queryParser.QueryParser;
import org.apache.lucene.search.BooleanQuery;
import org.apache.lucene.search.Query;

/**
 * A QueryParser which constructs queries to indexSearcher multiple
fields.
 * <p/>
 * Deze parser kan waarschijnlijk gekicked worden bij Lucene 2.0.
 *
 * @author Peter Veentjer
 */
public class MultiFieldQueryParserUtil {
	/**
	 * <p/>
	 * Parses a query which searches on the fields specified.
	 * <p/>
	 * If x fields are specified, this effectively constructs:
	 * <pre>
	 * <code>
	 * (field1:query) (field2:query) (field3:query)...(fieldx:query)
	 * </code>
	 * </pre>
	 *
	 * @param query    Query string to parse
	 * @param fields   Fields to indexSearcher on
	 * @param analyzer Analyzer to use
	 * @throws ParseException if query parsing fails
	 * @throws org.apache.lucene.queryParser.TokenMgrError
	 *                        if query parsing fails
	 */
	public static Query parse(String query, String[] fields,
Analyzer analyzer, boolean and) throws ParseException {
		BooleanQuery bQuery = new BooleanQuery();
		for (int i = 0; i < fields.length; i++) {
			QueryParser queryParser = new
QueryParser(fields[i], analyzer);
			queryParser.setOperator(and ? QueryParser.AND :
QueryParser.OR);
			Query q = queryParser.parse(query);
			bQuery.add(q, false, false);
		}
		return bQuery;
	}

	/**
	 * <p/>
	 * Parses a query, searching on the fields specified.
	 * Use this if you need to specify certain fields as required,
	 * and others as prohibited.
	 * <p><pre>
	 * Usage:
	 * <code>
	 * String[] fields = {"filename", "contents", "description"};
	 * int[] flags = {MultiFieldQueryParser.NORMAL FIELD,
	 *                MultiFieldQueryParser.REQUIRED FIELD,
	 *                MultiFieldQueryParser.PROHIBITED FIELD,};
	 * parse(query, fields, flags, analyzer);
	 * </code>
	 * </pre>
	 * <p/>
	 * The code above would construct a query:
	 * <pre>
	 * <code>
	 * (filename:query) +(contents:query) -(description:query)
	 * </code>
	 * </pre>
	 *
	 * @param query    Query string to parse
	 * @param fields   Fields to indexSearcher on
	 * @param flags    Flags describing the fields
	 * @param analyzer Analyzer to use
	 * @throws ParseException if query parsing fails
	 * @throws org.apache.lucene.queryParser.TokenMgrError
	 *                        if query parsing fails
	 */
	public static Query parse(String query, String[] fields, int[]
flags, Analyzer analyzer, boolean and) throws ParseException {
		if (query == null)
			throw new NullPointerException("query can`t be
null");
		if (fields == null)
			throw new NullPointerException("fields can`t be
null");
		if (flags == null)
			throw new NullPointerException("flags can`t be
null");
		if (fields.length != flags.length)
			throw new IllegalArgumentException();
		if (analyzer == null)
			throw new NullPointerException("analyzer can`t
be null");


		BooleanQuery bQuery = new BooleanQuery();
		for (int i = 0; i < fields.length; i++) {
			QueryParser queryParser = new
QueryParser(fields[i], analyzer);
			queryParser.setOperator(and ? QueryParser.AND :
QueryParser.OR);
			Query q = queryParser.parse(query);

			int flag = flags[i];
			switch (flag) {
				case
MultiFieldQueryParser.REQUIRED_FIELD:
					bQuery.add(q, true, false);
					break;
				case
MultiFieldQueryParser.PROHIBITED_FIELD:
					bQuery.add(q, false, true);
					break;
				case MultiFieldQueryParser.NORMAL_FIELD:
					bQuery.add(q, false, false);
					break;
				default:
					throw new
IllegalArgumentException("unrecognized fieldflag: " + flag);
			}
		}
		return bQuery;
	}

	public static Query parseAnd(String query, String[] fields,
int[] flags, Analyzer analyzer) throws ParseException {
		return parse(query, fields, flags, analyzer, true);
	}

	public static Query parseOr(String query, String[] fields, int[]
flags, Analyzer analyzer) throws ParseException {
		return parse(query, fields, flags, analyzer, false);
	}
} 

-----Oorspronkelijk bericht-----
Van: Volodymyr Bychkoviak [mailto:vbychkoviak@i-hypergrid.com] 
Verzonden: woensdag 20 april 2005 15:21
Aan: java-user@lucene.apache.org
Onderwerp: Re: What is going on with subversion.

Sorry, I've already read about servers moving.

Can somebody mail me latest  MultiFieldQueryParser.java  and
highlighting source code. Because I can't get it from subversion and I
need it urgently.

Thanks in advance.


Regards,
Volodymyr Bychkoviak

Volodymyr Bychkoviak wrote:

> I can't connect svn.apache.org. It seems that apache.org is down.
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
> For additional commands, e-mail: java-user-help@lucene.apache.org
>
>

---------------------------------------------------------------------
To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
For additional commands, e-mail: java-user-help@lucene.apache.org





---------------------------------------------------------------------
To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
For additional commands, e-mail: java-user-help@lucene.apache.org


Mime
View raw message