www.pudn.com > lucene.rar > FileDocument.java

/* 
 * Created on 2005-12-31 
 * 
 * TODO To change the template for this generated file go to 
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 */ 
package examples.ch; 
 
import java.io.File; 
import java.io.Reader; 
import java.io.FileInputStream; 
import java.io.BufferedReader; 
import java.io.InputStreamReader; 
 
import org.apache.lucene.document.Document; 
import org.apache.lucene.document.Field; 
import org.apache.lucene.document.DateField; 
 
/** A utility for making Lucene Documents from a File. */ 
 
public class FileDocument { 
  /** Makes a document for a File. 
    
 
    The document has three fields: 
    
 
    
path--containing the pathname of the file, as a stored, 
    tokenized field; 
    
modified--containing the last modified date of the file as 
    a keyword field as encoded by DateField; and 
    
contents--containing the full contents of the file, as a 
    Reader field; 
    */ 
  public static Document Document(File f) 
       throws java.io.FileNotFoundException { 
	  
    // make a new, empty document 
    Document doc = new Document(); 
 
    // Add the path of the file as a field named "path".  Use a Text field, so 
    // that the index stores the path, and so that the path is searchable 
    doc.add(Field.Text("path", f.getPath())); 
 
    // Add the last modified date of the file a field named "modified".  Use a 
    // Keyword field, so that it's searchable, but so that no attempt is made 
    // to tokenize the field into words. 
    doc.add(Field.Keyword("modified", 
			  DateField.timeToString(f.lastModified()))); 
 
    // Add the contents of the file a field named "contents".  Use a Text 
    // field, specifying a Reader, so that the text of the file is tokenized. 
    // ?? why doesn't FileReader work here ?? 
    FileInputStream is = new FileInputStream(f); 
    Reader reader = new BufferedReader(new InputStreamReader(is)); 
    doc.add(Field.Text("contents", reader)); 
 
    // return the document 
    return doc; 
  } 
 
  private FileDocument() {} 
}