Mailing List Archive

carlson 02/05/22 17:45:04

Added: contributions/searchbean/src/java/org/apache/lucene/beans
SearchBean.java
Log:
Initial submit of SerachBean and related classes

Revision Changes Path
1.1 jakarta-lucene-sandbox/contributions/searchbean/src/java/org/apache/lucene/beans/SearchBean.java

Index: SearchBean.java
===================================================================
/*
* SearchBean.java
*
* Created on November 1, 2001, 10:31 AM
*/

package org.apache.lucene.beans;

import org.apache.lucene.search.Searcher;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.Hits;
import org.apache.lucene.search.HitCollector;
import org.apache.lucene.store.Directory;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.StopAnalyzer;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.queryParser.QueryParser;
import org.apache.lucene.queryParser.ParseException;

import java.util.Vector;

import org.apache.lucene.beans.HitsIterator;

import java.io.IOException;

//import org.apache.log4j.Logger;

/**
*
* @author peter carlson
* @version 1.0
*/
public class SearchBean extends Object {

private String queryString = "";
private String querySortField = "relevance"; // default
private String queryType = "";
private Directory directory;
private HitsIterator hitsIterator = null;
private String defaultSearchField = "text";
private long searchTime = 0;
// static Logger logger = Logger.getLogger(SearchBean.class.getName());
// static Logger searchLogger = Logger.getLogger("searchLog");

private SearchBean(){
}

/** Creates new SearchBean
* @param path to index
*/
public SearchBean(Directory directory) {
this.directory = directory;
}

/** Creates new SearchBean
* @param directory index
* @param queryString string to search with
*/
public SearchBean(Directory directory, String queryString) {
this(directory);
setQueryString(queryString);
}

/** Creates new SearchBean
* @param directory index
* @param queryString string to search with
* @param querySortField field to sort on
*/
public SearchBean(Directory directory, String queryString, String querySortField) {
this(directory);
setQueryString(queryString);
setQuerySortField(querySortField);
}

/** Creates new SearchBean
* @param directory index
* @param queryString string to search with
* @param querySortField field to sort on
* @param queryType used to indicate which index and default Field
*/
public SearchBean(Directory directory, String queryString, String querySortField, String queryType){
this(directory);
setQueryString(queryString);
setQuerySortField(querySortField);
setQueryType(queryType);
}

/** main search method
*/
public HitsIterator search() throws IOException, ParseException{
return search(queryString,querySortField);
}

/** main search method
* @param queryString string to search with
*/
public HitsIterator search(String queryString) throws IOException, ParseException{
return search(queryString,queryString);
}

/** main search method
* @param queryString string to search with
* @param querySortField field to sort on
*/
public HitsIterator search(String queryString, String querySortField) throws IOException, ParseException{
return search(queryString, querySortField, queryType);
}

/** main search method
* @param queryString string to search with
* @param querySortField field to sort on
* @param queryType used to indicate the index to search
*/
public HitsIterator search(String queryString, String querySortField, String queryType) throws IOException, ParseException {
long startTime = System.currentTimeMillis();
Hits hits = searchHits(queryString, queryType);

if (hits == null) {return null;}
if (hits.length() == 0) {return null;}

HitsIterator hi = new HitsIterator(hits, querySortField);
long endTime = System.currentTimeMillis();
setSearchTime(endTime - startTime);
setHitsIterator(hi);
//searchLogger.info("queryString = "+queryString + "sort field = "+ querySortField +" #results = "+hits.length());
return hi;
}

/** does the actual searching
*/
private Hits searchHits(String queryString, String queryType) throws IOException, ParseException{
if (queryString == "") {
return null;
}

// Provide for multiple indices in the future

Searcher searcher = new IndexSearcher(directory);
Query query = getQuery(queryString, defaultSearchField);
//System.out.println("###querystring= "+query.toString(defaultSearchField));
Hits hits = searcher.search(query);
//System.out.println("Number hits = "+hits.length());
//logger.debug("queryString = "+query.toString(searchField)+" hits = "+hits.length()+" queryType = "+queryType+" indexPath = "+indexPath );
return hits;
}

/** <queryString> | <queryType> | <querySortField>
*/
public String toString(){
return queryString+"|"+queryType+"|"+querySortField;
}

/** setter for queryString
*/
public void setQueryString
(String queryString) {
this.queryString = queryString;
}

/** getter for queryString
*/
public String getQueryString(){
return queryString;
}

/** getter for Lucene Query
*/
private Query getQuery(String queryString, String searchField) throws ParseException {
//String defaultSearchField = "text";
Analyzer analyzer = new StandardAnalyzer();
Query query = QueryParser.parse(queryString, searchField, analyzer);
//System.out.println(query.toString());
return query;
}

/** Getter for property defaulSearchField.
* @return Value of property defaulSearchField.
*/
public String getDefaultSearchField() {
return defaultSearchField;
}

/** Setter for property defaulSearchField.
* @param defaulSearchField New value of property defaulSearchField.
*/
public void setDefaultSearchField(java.lang.String defaultSearchField) {
this.defaultSearchField = defaultSearchField;
}

/** Getter for property searchTime.
* @return Value of property searchTime.
*/
public long getSearchTime() {
return searchTime;
}

/** Setter for property searchTime.
* @param searchTime New value of property searchTime.
*/
public void setSearchTime(long searchTime) {
this.searchTime = searchTime;
}

/** Getter for property querySortField.
* @return Value of property querySortField.
*/
public java.lang.String getQuerySortField() {
return querySortField;
}

/** Setter for property querySortField.
* @param querySortField New value of property querySortField.
*/
public void setQuerySortField(String querySortField) {
this.querySortField = querySortField;
}

/** Getter for property hitsIterator.
* @return Value of property hitsIterator.
*/
public HitsIterator getHitsIterator() {
return hitsIterator;
}

/** Setter for property hitsIterator.
* @param hitsIterator New value of property hitsIterator.
*/
public void setHitsIterator(HitsIterator hitsIterator) {
this.hitsIterator = hitsIterator;
}

/** Getter for property queryType.
* @return Value of property queryType.
*/
public java.lang.String getQueryType() {
return queryType;
}

/** Setter for property queryType.
* @param queryType New value of property queryType.
*/
public void setQueryType(java.lang.String queryType) {
this.queryType = queryType;
}

/** Getter for property directory.
* @return Value of property directory.
*/
public org.apache.lucene.store.Directory getDirectory() {
return directory;
}

/** Setter for property directory.
* @param directory New value of property directory.
*/
public void setDirectory(org.apache.lucene.store.Directory directory) {
this.directory = directory;
}

}




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