org.alfresco.repo.content.metadata

Class HtmlMetadataExtracter

java.lang.Object

org.alfresco.repo.content.metadata.AbstractMappingMetadataExtracter

org.alfresco.repo.content.metadata.HtmlMetadataExtracter

All Implemented Interfaces:

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

public class HtmlMetadataExtracter
extends AbstractMappingMetadataExtracter

Extracts the following values from HTML documents:

   author:                 --      cm:author
   title:                  --      cm:title
   description:            --      cm:description
 

TIKA note - all metadata will be present, but will need to search for the varient names ourselves as tika puts them in as-is.

Author:

Jesper Steen Møller, Derek Hulley

Nested Class Summary

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

MetadataExtracter.OverwritePolicy

Field Summary

Fields

Modifier and Type	Field and Description
static Set<String>	MIMETYPES

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

logger, MEGABYTE_SIZE, metadataExtracterConfig, NAMESPACE_PROPERTY_PREFIX, PROPERTY_COMPONENT_EMBED, PROPERTY_COMPONENT_EXTRACT, PROPERTY_PREFIX_METADATA

Constructor Summary

Constructors

Constructor and Description
HtmlMetadataExtracter()

Method Summary

Modifier and Type	Method and Description
protected Map<String,Serializable>	extractRaw(org.alfresco.service.cmr.repository.ContentReader reader) Override to provide the raw extracted metadata values.

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

checkIsEmbedSupported, checkIsSupported, embed, embedInternal, extract, extract, extract, filterSystemProperties, getBeanName, getDefaultEmbedMapping, getDefaultMapping, getEmbedMapping, getExecutorService, getLimits, getMapping, getMimetypeService, init, isEmbeddingSupported, isSupported, makeDate, 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

Field Detail

MIMETYPES

public static final Set<String> MIMETYPES

Constructor Detail

HtmlMetadataExtracter

public HtmlMetadataExtracter()

Method Detail

extractRaw

protected Map<String,Serializable> extractRaw(org.alfresco.service.cmr.repository.ContentReader reader)
                                       throws Throwable

Description copied from class: AbstractMappingMetadataExtracter

Override to provide the raw extracted metadata values. An extracter should extract as many of the available properties as is realistically possible. Even if the default mapping doesn't handle all properties, it is possible for each instance of the extracter to be configured differently and more or less of the properties may be used in different installations.

Raw values must not be trimmed or removed for any reason. Null values and empty strings are

• Null: Removed
• Empty String: Passed to the OverwritePolicy
• Non Serializable: Converted to String or fails if that is not possible

Properties extracted and their meanings and types should be thoroughly described in the class-level javadocs of the extracter implementation, for example:

 editor: - the document editor        -->  cm:author
 title:  - the document title         -->  cm:title
 user1:  - the document summary
 user2:  - the document description   -->  cm:description
 user3:  -
 user4:  -
 

Specified by:

extractRaw in class AbstractMappingMetadataExtracter

Parameters:

reader - the document to extract the values from. This stream provided by the reader must be closed if accessed directly.

Returns:

Returns a map of document property values keyed by property name.

Throws:

Throwable - All exception conditions can be handled.

See Also:

AbstractMappingMetadataExtracter.getDefaultMapping()