org.apache.poi.extractor

Class OLE2ExtractorFactory

java.lang.Object

org.apache.poi.extractor.OLE2ExtractorFactory

public final class OLE2ExtractorFactory
extends java.lang.Object

Figures out the correct POIOLE2TextExtractor for your supplied document, and returns it.

Note 1 - will fail for many file formats if the POI Scratchpad jar is not present on the runtime classpath

Note 2 - for text extractor creation across all formats, use ExtractorFactory contained within the OOXML jar.

Note 3 - rather than using this, for most cases you would be better off switching to Apache Tika instead!

Method Summary

Modifier and Type	Method and Description
static POITextExtractor	createExtractor(DirectoryNode poifsDir) Create the Extractor, if possible.
static <T extends POITextExtractor> T	createExtractor(java.io.InputStream input)
static <T extends POITextExtractor> T	createExtractor(POIFSFileSystem fs)
static java.lang.Boolean	getAllThreadsPreferEventExtractors() Should all threads prefer event based over usermodel based extractors? (usermodel extractors tend to be more accurate, but use more memory) Default is to use the thread level setting, which defaults to false.
static POITextExtractor[]	getEmbededDocsTextExtractors(POIOLE2TextExtractor ext) Returns an array of text extractors, one for each of the embedded documents in the file (if there are any).
static boolean	getPreferEventExtractor() Should this thread use event based extractors is available? Checks the all-threads one first, then thread specific.
static boolean	getThreadPrefersEventExtractors() Should this thread prefer event based over usermodel based extractors? (usermodel extractors tend to be more accurate, but use more memory) Default is false.
static void	setAllThreadsPreferEventExtractors(java.lang.Boolean preferEventExtractors) Should all threads prefer event based over usermodel based extractors? If set, will take preference over the Thread level setting.
static void	setThreadPrefersEventExtractors(boolean preferEventExtractors) Should this thread prefer event based over usermodel based extractors? Will only be used if the All Threads setting is null.

Methods inherited from class java.lang.Object

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

Method Detail

getThreadPrefersEventExtractors

public static boolean getThreadPrefersEventExtractors()

Should this thread prefer event based over usermodel based extractors? (usermodel extractors tend to be more accurate, but use more memory) Default is false.

Returns:

true if event extractors should be preferred in the current thread, fals otherwise.

getAllThreadsPreferEventExtractors

public static java.lang.Boolean getAllThreadsPreferEventExtractors()

Should all threads prefer event based over usermodel based extractors? (usermodel extractors tend to be more accurate, but use more memory) Default is to use the thread level setting, which defaults to false.

Returns:

true if event extractors should be preferred in all threads, fals otherwise.

setThreadPrefersEventExtractors

public static void setThreadPrefersEventExtractors(boolean preferEventExtractors)

Should this thread prefer event based over usermodel based extractors? Will only be used if the All Threads setting is null.

Parameters:

preferEventExtractors - If this threads should prefer event based extractors.

setAllThreadsPreferEventExtractors

public static void setAllThreadsPreferEventExtractors(java.lang.Boolean preferEventExtractors)

Should all threads prefer event based over usermodel based extractors? If set, will take preference over the Thread level setting.

Parameters:

preferEventExtractors - If all threads should prefer event based extractors.

getPreferEventExtractor

public static boolean getPreferEventExtractor()

Should this thread use event based extractors is available? Checks the all-threads one first, then thread specific.

Returns:

If the current thread should use event based extractors.

createExtractor

public static <T extends POITextExtractor> T createExtractor(POIFSFileSystem fs)
                                                      throws java.io.IOException

Throws:

java.io.IOException

createExtractor

public static <T extends POITextExtractor> T createExtractor(java.io.InputStream input)
                                                      throws java.io.IOException

Throws:

java.io.IOException

createExtractor

public static POITextExtractor createExtractor(DirectoryNode poifsDir)
                                        throws java.io.IOException

Create the Extractor, if possible. Generally needs the Scratchpad jar. Note that this won't check for embedded OOXML resources either, use ExtractorFactory for that.

Parameters:

poifsDir - The DirectoryNode pointing to a document.

Returns:

The resulting POITextExtractor, an exception is thrown if no TextExtractor can be created for some reason.

Throws:

java.io.IOException - If converting the DirectoryNode into a HSSFWorkbook fails

OldFileFormatException - If the DirectoryNode points to a format of an unsupported version of Excel.

java.lang.IllegalArgumentException - If creating the Extractor fails

getEmbededDocsTextExtractors

public static POITextExtractor[] getEmbededDocsTextExtractors(POIOLE2TextExtractor ext)
                                                       throws java.io.IOException

Returns an array of text extractors, one for each of the embedded documents in the file (if there are any). If there are no embedded documents, you'll get back an empty array. Otherwise, you'll get one open POITextExtractor for each embedded file.

Parameters:

ext - The extractor to look at for embedded documents

Returns:

An array of resulting extractors. Empty if no embedded documents are found.

Throws:

java.io.IOException - If converting the DirectoryNode into a HSSFWorkbook fails

OldFileFormatException - If the DirectoryNode points to a format of an unsupported version of Excel.

java.lang.IllegalArgumentException - If creating the Extractor fails