Package org.apache.tika.parser.microsoft

Class ExcelExtractor

java.lang.Object

org.apache.tika.parser.microsoft.ExcelExtractor

public class ExcelExtractor
extends Object

Excel parser implementation which uses POI's Event API to handle the contents of a Workbook.

The Event API uses a much smaller memory footprint than HSSFWorkbook when processing excel files but at the cost of more complexity.

With the Event API a listener is registered for specific record types and those records are created, fired off to the listener and then discarded as the stream is being processed.

See Also:

HSSFListener, POI Event API How To

Field Summary

Fields

Modifier and Type	Field	Description
protected ParseContext	context
protected OfficeParserConfig	officeParserConfig
protected Metadata	parentMetadata

Constructor Summary

Constructors

Constructor	Description
ExcelExtractor(ParseContext context, Metadata metadata)

Method Summary

Modifier and Type	Method	Description
protected Detector	getDetector()
protected String	getPassword()	Returns the password to be used for this file, or null if no / default password should be used
protected TikaConfig	getTikaConfig()
protected void	handleEmbeddedOfficeDoc(org.apache.poi.poifs.filesystem.DirectoryEntry dir, String resourceName, XHTMLContentHandler xhtml, boolean outputHtml)	Handle an office document that's embedded at the POIFS level
protected void	handleEmbeddedOfficeDoc(org.apache.poi.poifs.filesystem.DirectoryEntry dir, XHTMLContentHandler xhtml, boolean outputHtml)	Handle an office document that's embedded at the POIFS level
protected void	handleEmbeddedResource(TikaInputStream resource, String filename, String relationshipID, String mediaType, XHTMLContentHandler xhtml, boolean outputHtml)
protected void	handleEmbeddedResource(TikaInputStream resource, String filename, String relationshipID, org.apache.poi.hpsf.ClassID storageClassID, String mediaType, XHTMLContentHandler xhtml, boolean outputHtml)
protected void	handleEmbeddedResource(TikaInputStream resource, Metadata embeddedMetadata, String filename, String relationshipID, org.apache.poi.hpsf.ClassID storageClassID, String mediaType, XHTMLContentHandler xhtml, boolean outputHtml)
boolean	isListenForAllRecords()	Returns true if this parser is configured to listen for all records instead of just the specified few.
protected void	parse(org.apache.poi.poifs.filesystem.DirectoryNode root, XHTMLContentHandler xhtml, Locale locale)
protected void	parse(org.apache.poi.poifs.filesystem.POIFSFileSystem filesystem, XHTMLContentHandler xhtml, Locale locale)	Extracts text from an Excel Workbook writing the extracted content to the specified Appendable.
void	setListenForAllRecords(boolean listenForAllRecords)	Specifies whether this parser should to listen for all records or just for the specified few.
static String	tryToGetMsgTitle(org.apache.poi.poifs.filesystem.DirectoryEntry node, String defaultVal)

Methods inherited from class java.lang.Object

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

Field Detail

parentMetadata

protected final Metadata parentMetadata

officeParserConfig

protected final OfficeParserConfig officeParserConfig

context

protected final ParseContext context

Constructor Detail

ExcelExtractor

public ExcelExtractor(ParseContext context,
                      Metadata metadata)

Method Detail

isListenForAllRecords

public boolean isListenForAllRecords()

Returns true if this parser is configured to listen for all records instead of just the specified few.

setListenForAllRecords

public void setListenForAllRecords(boolean listenForAllRecords)

Specifies whether this parser should to listen for all records or just for the specified few.

Note: Under normal operation this setting should be false (the default), but you can experiment with this setting for testing and debugging purposes.

Parameters:

listenForAllRecords - true if the HSSFListener should be registered to listen for all records or false if the listener should be configured to only receive specified records.

parse

protected void parse(org.apache.poi.poifs.filesystem.POIFSFileSystem filesystem,
                     XHTMLContentHandler xhtml,
                     Locale locale)
              throws IOException,
                     SAXException,
                     TikaException

Extracts text from an Excel Workbook writing the extracted content to the specified Appendable.

Parameters:

filesystem - POI file system

Throws:

IOException - if an error occurs processing the workbook or writing the extracted content

SAXException

TikaException

parse

protected void parse(org.apache.poi.poifs.filesystem.DirectoryNode root,
                     XHTMLContentHandler xhtml,
                     Locale locale)
              throws IOException,
                     SAXException,
                     TikaException

Throws:

IOException

SAXException

TikaException

getTikaConfig

protected TikaConfig getTikaConfig()

getDetector

protected Detector getDetector()

getPassword

protected String getPassword()

Returns the password to be used for this file, or null if no / default password should be used

handleEmbeddedResource

protected void handleEmbeddedResource(TikaInputStream resource,
                                      String filename,
                                      String relationshipID,
                                      String mediaType,
                                      XHTMLContentHandler xhtml,
                                      boolean outputHtml)
                               throws IOException,
                                      SAXException,
                                      TikaException

Throws:

IOException

SAXException

TikaException

handleEmbeddedResource

protected void handleEmbeddedResource(TikaInputStream resource,
                                      String filename,
                                      String relationshipID,
                                      org.apache.poi.hpsf.ClassID storageClassID,
                                      String mediaType,
                                      XHTMLContentHandler xhtml,
                                      boolean outputHtml)
                               throws IOException,
                                      SAXException,
                                      TikaException

Throws:

IOException

SAXException

TikaException

handleEmbeddedResource

protected void handleEmbeddedResource(TikaInputStream resource,
                                      Metadata embeddedMetadata,
                                      String filename,
                                      String relationshipID,
                                      org.apache.poi.hpsf.ClassID storageClassID,
                                      String mediaType,
                                      XHTMLContentHandler xhtml,
                                      boolean outputHtml)
                               throws IOException,
                                      SAXException,
                                      TikaException

Throws:

IOException

SAXException

TikaException

handleEmbeddedOfficeDoc

protected void handleEmbeddedOfficeDoc(org.apache.poi.poifs.filesystem.DirectoryEntry dir,
                                       XHTMLContentHandler xhtml,
                                       boolean outputHtml)
                                throws IOException,
                                       SAXException,
                                       TikaException

Handle an office document that's embedded at the POIFS level

Throws:

IOException

SAXException

TikaException

handleEmbeddedOfficeDoc

protected void handleEmbeddedOfficeDoc(org.apache.poi.poifs.filesystem.DirectoryEntry dir,
                                       String resourceName,
                                       XHTMLContentHandler xhtml,
                                       boolean outputHtml)
                                throws IOException,
                                       SAXException,
                                       TikaException

Handle an office document that's embedded at the POIFS level

Throws:

IOException

SAXException

TikaException

tryToGetMsgTitle

public static String tryToGetMsgTitle(org.apache.poi.poifs.filesystem.DirectoryEntry node,
                                      String defaultVal)