Package com.logicaldoc.core.parser

Interface Parser

All Known Implementing Classes:

AbiWordParser, AbstractParser, CatchAllParser, DOCParser, DummyParser, EpubParser, HTMLParser, KOfficeParser, OpenOfficeParser, PDFParser, PPTParser, RarParser, RTFParser, SevenZipParser, TarParser, TXTParser, WordPerfectParser, XLSParser, XMLParser, ZABWParser, ZipParser

public interface Parser

A Parser is capable of parsing a content in order to extract the texts and other metadata within it. Concrete implementations of this interface are designed to process specific file types.

Author:

Michael Scholz

Method Summary

Modifier and Type	Method	Description
int	countPages(File file, String filename)	Same as the other countPages(InputStream, String), but use this when you have a file rather than a stream.
int	countPages(InputStream input, String filename)	Counts the number of pages of the given binary document.
String	parse(File file, String filename, String encoding, Locale locale, String tenant)	Same as parse(InputStream, String, String, Locale, String), use this when you have a file rather than a stream.
String	parse(File file, String filename, String encoding, Locale locale, String tenant, Document document, String fileVersion)	Same as parse(InputStream, String, String, Locale, String, Document, String), but use this when you have a file rather than a stream.
String	parse(InputStream input, String filename, String encoding, Locale locale, String tenant)	Extracts content for the text content of the given binary document.
String	parse(InputStream input, String filename, String encoding, Locale locale, String tenant, Document document, String fileVersion)	Extracts content for the text content of the given binary document.

Method Detail

parse

String parse(File file,
             String filename,
             String encoding,
             Locale locale,
             String tenant)
      throws ParseException

Same as parse(InputStream, String, String, Locale, String), use this when you have a file rather than a stream.

Parameters:

file - the file

filename - name of the file

encoding - character encoding

locale - the locale

tenant - name of the tenant

Returns:

the extracted text

Throws:

ParseException - error in the parsing

parse

String parse(File file,
             String filename,
             String encoding,
             Locale locale,
             String tenant,
             Document document,
             String fileVersion)
      throws ParseException

Same as parse(InputStream, String, String, Locale, String, Document, String), but use this when you have a file rather than a stream.

Parameters:

file - the file

filename - name of the file

encoding - character encoding

locale - the locale

tenant - name of the tenant

document - the document the file belongs to (optional)

fileVersion - the file version being processed (optional)

Returns:

the extracted text

Throws:

ParseException - error in the parsing

parse

String parse(InputStream input,
             String filename,
             String encoding,
             Locale locale,
             String tenant,
             Document document,
             String fileVersion)
      throws ParseException

Extracts content for the text content of the given binary document. The content type and character encoding (if available and applicable) are given as arguments.

The implementation can choose either to read and parse the given document immediately or to return a reader that does it incrementally. The only constraint is that the implementation must close the given stream latest when the returned reader is closed. The caller on the other hand is responsible for closing the returned reader.

The implementation should only throw an exception on transient errors, i.e. when it can expect to be able to successfully extract the text content of the same binary at another time. An effort should be made to recover from syntax errors and other similar problems.

This method should be thread-safe, i.e. it is possible that this method is invoked simultaneously by different threads to extract the text content of different documents. On the other hand the returned reader does not need to be thread-safe.

The parsing has to be completed before the seconds specified in the parser.timeout config. property.

Parameters:

input - binary content from which to extract the text

filename - name of the file

encoding - character encoding

locale - the locale

tenant - name of the tenant

document - the document the file belongs to (optional)

fileVersion - the file version being processed (optional)

Returns:

the extracted text

Throws:

ParseException - error in the parsing

parse

String parse(InputStream input,
             String filename,
             String encoding,
             Locale locale,
             String tenant)
      throws ParseException

Extracts content for the text content of the given binary document. The content type and character encoding (if available and applicable) are given as arguments.

The implementation can choose either to read and parse the given document immediately or to return a reader that does it incrementally. The only constraint is that the implementation must close the given stream latest when the returned reader is closed. The caller on the other hand is responsible for closing the returned reader.

The implementation should only throw an exception on transient errors, i.e. when it can expect to be able to successfully extract the text content of the same binary at another time. An effort should be made to recover from syntax errors and other similar problems.

This method should be thread-safe, i.e. it is possible that this method is invoked simultaneously by different threads to extract the text content of different documents. On the other hand the returned reader does not need to be thread-safe.

The parsing has to be completed before the seconds specified in the parser.timeout config. property.

Parameters:

input - binary content from which to extract the text

filename - name of the file

encoding - character encoding

locale - the locale

tenant - name of the tenant

Returns:

the extracted text

Throws:

ParseException - error in the parsing

countPages

int countPages(InputStream input,
               String filename)

Counts the number of pages of the given binary document.

Parameters:

input - binary content from which to extract the text

filename - name of the file

Returns:

the number of pages

countPages

int countPages(File file,
               String filename)

Same as the other countPages(InputStream, String), but use this when you have a file rather than a stream.

Parameters:

file - the file

filename - name of the file

Returns:

the number of pages