org.alfresco.repo.content.metadata

Class TikaAutoMetadataExtracter

java.lang.Object

org.alfresco.repo.content.metadata.AbstractMappingMetadataExtracter

org.alfresco.repo.content.metadata.TikaPoweredMetadataExtracter

org.alfresco.repo.content.metadata.TikaAutoMetadataExtracter

All Implemented Interfaces:

ContentWorker, MetadataEmbedder, MetadataExtracter, org.springframework.beans.factory.Aware, org.springframework.beans.factory.BeanNameAware, org.springframework.context.ApplicationContextAware

public class TikaAutoMetadataExtracter
extends TikaPoweredMetadataExtracter

A Metadata Extractor which makes use of the Apache Tika auto-detection to select the best parser to extract the metadata from your document. This will be used for all files which Tika can handle, but where no other more explicit extractor is defined.

   author:                 --      cm:author
   title:                  --      cm:title
   subject:                --      cm:description
   created:                --      cm:created
   comments:
   geo:lat:                --      cm:latitude
   geo:long:               --      cm:longitude
 

Since:

3.4

Author:

Nick Burch

Nested Class Summary

Nested classes/interfaces inherited from class org.alfresco.repo.content.metadata.TikaPoweredMetadataExtracter

TikaPoweredMetadataExtracter.HeadContentHandler, TikaPoweredMetadataExtracter.MapCaptureContentHandler, TikaPoweredMetadataExtracter.NullContentHandler

Nested classes/interfaces inherited from interface org.alfresco.repo.content.metadata.MetadataExtracter

MetadataExtracter.OverwritePolicy

Field Summary

Fields

Modifier and Type	Field and Description
protected static org.apache.commons.logging.Log	logger
static ArrayList<String>	SUPPORTED_MIMETYPES

Fields inherited from class org.alfresco.repo.content.metadata.TikaPoweredMetadataExtracter

documentSelector, KEY_AUTHOR, KEY_COMMENTS, KEY_CREATED, KEY_DESCRIPTION, KEY_SUBJECT, KEY_TAGS, KEY_TITLE

Fields inherited from class org.alfresco.repo.content.metadata.AbstractMappingMetadataExtracter

MEGABYTE_SIZE, metadataExtracterConfig, NAMESPACE_PROPERTY_PREFIX, PROPERTY_COMPONENT_EMBED, PROPERTY_COMPONENT_EXTRACT, PROPERTY_PREFIX_METADATA

Constructor Summary

Constructors

Constructor and Description
TikaAutoMetadataExtracter(org.apache.tika.config.TikaConfig tikaConfig)

Method Summary

Modifier and Type	Method and Description
protected Map<String,Serializable>	extractSpecific(org.apache.tika.metadata.Metadata metadata, Map<String,Serializable> properties, Map<String,String> headers) Because some editors use JPEG_IMAGE_HEIGHT_TAG when saving JPEG images , a more reliable source for image size are the values provided by Tika and not the exif/tiff metadata read from the file This will override the tiff:Image size which gets embedded into the alfresco node properties for jpeg files that contain such exif information
protected org.apache.tika.parser.Parser	getParser() Does auto-detection to select the best Tika Parser.

Methods inherited from class org.alfresco.repo.content.metadata.TikaPoweredMetadataExtracter

buildParseContext, buildSupportedMimetypes, embedInternal, extractRaw, extractSize, getDocumentSelector, getEmbedder, getExtractorContext, getInputStream, getMetadataSeparator, makeDate, needHeaderContents, setDocumentSelector, setMetadataSeparator

Methods inherited from class org.alfresco.repo.content.metadata.AbstractMappingMetadataExtracter

checkIsEmbedSupported, checkIsSupported, embed, extract, extract, extract, filterSystemProperties, getBeanName, getDefaultEmbedMapping, getDefaultMapping, getEmbedMapping, getExecutorService, getLimits, getMapping, getMimetypeService, init, isEmbeddingSupported, isSupported, newRawMap, putRawValue, readEmbedMappingProperties, readEmbedMappingProperties, readGlobalEmbedMappingProperties, readGlobalExtractMappingProperties, readMappingProperties, readMappingProperties, register, setApplicationContext, setBeanName, setDictionaryService, setEmbedMapping, setEmbedMappingProperties, setEnableStringTagging, setExecutorService, setFailOnTypeConversion, setInheritDefaultEmbedMapping, setInheritDefaultMapping, setMapping, setMappingProperties, setMetadataExtracterConfig, setMimetypeLimits, setMimetypeService, setOverwritePolicy, setProperties, setRegistry, setSupportedDateFormats, setSupportedEmbedMimetypes, setSupportedMimetypes

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.alfresco.repo.content.metadata.MetadataEmbedder

embed, isEmbeddingSupported

Field Detail

logger

protected static org.apache.commons.logging.Log logger

SUPPORTED_MIMETYPES

public static ArrayList<String> SUPPORTED_MIMETYPES

Constructor Detail

TikaAutoMetadataExtracter

public TikaAutoMetadataExtracter(org.apache.tika.config.TikaConfig tikaConfig)

Method Detail

getParser

protected org.apache.tika.parser.Parser getParser()

Does auto-detection to select the best Tika Parser.

Specified by:

getParser in class TikaPoweredMetadataExtracter

extractSpecific

protected Map<String,Serializable> extractSpecific(org.apache.tika.metadata.Metadata metadata,
                                                   Map<String,Serializable> properties,
                                                   Map<String,String> headers)

Because some editors use JPEG_IMAGE_HEIGHT_TAG when saving JPEG images , a more reliable source for image size are the values provided by Tika and not the exif/tiff metadata read from the file This will override the tiff:Image size which gets embedded into the alfresco node properties for jpeg files that contain such exif information

Overrides:

extractSpecific in class TikaPoweredMetadataExtracter