org.terrier.indexing

Class PDFDocument

java.lang.Object

org.terrier.indexing.FileDocument

org.terrier.indexing.PDFDocument

All Implemented Interfaces:

Document

public class PDFDocument
extends FileDocument

Implements a Document object for reading PDF documents, using Apache PDFBox.

Author:

Craig Macdonald

Nested Class Summary

Nested classes/interfaces inherited from class org.terrier.indexing.FileDocument

FileDocument.ReaderWrapper

Field Summary

Fields

Modifier and Type	Field and Description
protected static org.apache.log4j.Logger	logger

Fields inherited from class org.terrier.indexing.FileDocument

abstractlength, abstractname, abstractwritten, br, EOD, filename, fileProperties, tokenStream

Constructor Summary

Constructors

Constructor and Description
PDFDocument(InputStream docStream, Map<String,String> docProperties, Tokeniser tok) Constructs a new PDFDocument
PDFDocument(Reader docReader, Map<String,String> docProperties, Tokeniser tok) Constructs a new PDFDocument
PDFDocument(String filename, InputStream docStream, Tokeniser tokeniser) Constructs a new PDFDocument, which will convert the docStream which represents the file to a Document object from which an Indexer can retrieve a stream of terms.
PDFDocument(String filename, Reader docReader, Tokeniser tok) Constructs a new PDFDocument

Method Summary

Methods

Modifier and Type	Method and Description
protected Reader	getReader(InputStream is) Returns the reader of text, which is suitable for parsing terms out of, and which is created by converting the file represented by parameter docStream.

Methods inherited from class org.terrier.indexing.FileDocument

endOfDocument, getAllProperties, getFields, getNextTerm, getProperty, getReader, makeFilenameProperties, setProperty

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

logger

protected static final org.apache.log4j.Logger logger

Constructor Detail

PDFDocument

public PDFDocument(String filename,
           InputStream docStream,
           Tokeniser tokeniser)

Constructs a new PDFDocument, which will convert the docStream which represents the file to a Document object from which an Indexer can retrieve a stream of terms.

Parameters:

docStream - InputStream the input stream that represents the the document's file.

PDFDocument

public PDFDocument(InputStream docStream,
           Map<String,String> docProperties,
           Tokeniser tok)

Constructs a new PDFDocument

Parameters:

docStream -

docProperties -

tok -

PDFDocument

public PDFDocument(Reader docReader,
           Map<String,String> docProperties,
           Tokeniser tok)

Constructs a new PDFDocument

Parameters:

docReader -

docProperties -

tok -

PDFDocument

public PDFDocument(String filename,
           Reader docReader,
           Tokeniser tok)

Constructs a new PDFDocument

Parameters:

filename -

docReader -

tok -

Method Detail

getReader

protected Reader getReader(InputStream is)

Returns the reader of text, which is suitable for parsing terms out of, and which is created by converting the file represented by parameter docStream. This method involves running the stream through the PDFParser etc provided in the org.pdfbox library. On error, it returns null, and sets EOD to true, so no terms can be read from this document.

Overrides:

getReader in class FileDocument

Parameters:

is - the input stream that represents the document's file.

Returns:

Reader a reader that is fed to an indexer.