Mailing List Archive

carlson 02/05/22 17:45:09

Added: contributions/searchbean/src/java/org/apache/lucene/beans
SortedField.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/SortedField.java

Index: SortedField.java
===================================================================
/*
* SortedField.java
*
* Created on May 20, 2002, 4:15 PM
*/

package org.apache.lucene.beans;


import org.apache.lucene.index.IndexReader;
import org.apache.lucene.store.Directory;

import java.util.Hashtable;

import java.io.File;
import java.io.IOException;

/**
*
* @author carlson
*/
public class SortedField {

private String fieldName;

private String[] fieldValues;

private static Hashtable fieldList = new Hashtable(); //keeps track of all fields

/** Creates a new instance of SortedField */
public SortedField() {
}

/** add a field so that is can be used to sort
* @param fieldName the name of the field to add
* @param indexPath path to Lucene index directory
*/
public static void addField(String fieldName, String indexPath) throws IOException{
IndexReader ir = IndexReader.open(indexPath);
addField(fieldName, ir);
}

/** add a field so that is can be used to sort
* @param fieldName the name of the field to add
* @param indexFile File pointing to Lucene index directory
*/
public static void addField(String fieldName, File indexFile) throws IOException{
IndexReader ir = IndexReader.open(indexFile);
addField(fieldName, ir);
}


/** add a field so that is can be used to sort
* @param fieldName the name of the field to add
* @param directory Lucene Directory
*/
public static void addField(String fieldName, Directory directory) throws IOException{
IndexReader ir = IndexReader.open(directory);
addField(fieldName, ir);
}

private static void addField(String fieldName, IndexReader ir) throws IOException{
SortedField sortedField = new SortedField();
sortedField.addSortedField(fieldName,ir);
//long start = System.currentTimeMillis();
fieldList.put(fieldName, sortedField);
//logger.info("adding data from field "+fieldName+" took "+(System.currentTimeMillis()-start));
}

/** adds the data from the index into a string array
*/
private void addSortedField(String fieldName, IndexReader ir) throws IOException{
int numDocs = ir.numDocs();
fieldValues = new String[numDocs];
for (int i=0; i<numDocs; i++) {
fieldValues[i] = ir.document(i).get(fieldName);
}
ir.close();
}

/** returns the value of the field
* @param globalID Lucene's global document ID
* @return value of field
*/
public String getFieldValue(int globalID) {
return fieldValues[globalID];
}

/** provides way to retrieve a SortedField once you add it
* @param fieldName name of field to lookup
* @return SortedField field to use when sorting
*/
public static SortedField getSortedField(String fieldName){
return (SortedField) fieldList.get(fieldName);
}

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




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