OBJECT’s Metadata Extractor enables Alfresco to extract user specified metadata out of Word-documents through Alfresco’s. Configuring custom XMP metadata extraction. You can map custom XMP ( Extensible Metadata Platform) metadata fields to custom Alfresco data model. Since Apache Tika is used as a basic metadata extractor in Alfresco, you can use that to extract metadata for all the mime types that it supports.

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Note that all the namespaces that the content model properties belong to have to be specified as in the above example with namespace.

Configuring metadata extraction | Alfresco Documentation

The properties that are extracted are limited to the out-of-the-box content model, which is very generic. Metadata extraction is primarily based on the Apache Tika library.

When overriding a Metadata Extractor configuration you have the option to inherit extractot default properties mapping or define a new one from scratch. The default values for each of these properties are MAX value specified in the java code. Turning on Metadata Extractionb logging is a good idea to get on top of what is happening. Search for “Content Metadata Extractors” in the file and then you will find an ordered list of extractor definitions.

Alfresco seems to be invoking my custom extractor at the time of uploading the file but after that it does not seem to be writing the properties extracted. By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.

Alfresco Content Services performs metadata metadta on content automatically, however, you may wish to create custom metadata extractors to handle custom file properties and custom content models. The following table shows which conditions must be met for overwriting the value:. PDFBox Spring bean as follows: Override the bean extract-metadata and set the carryAspectProperties to false.


Metadata Extraction | Alfresco Community

Start by updating the extractor configuration as follows: This exrractor require configuration like this, note these are new bean definitions, no overrides as in previous examples: The Javadocs for the extractor give the list on the left of values extracted from the document. Created date, creator, modified date, and modifier is always controlled by the Alfresco Content Services system, unless you are using the Bulk Import tool, in which case last modified date can be preserved.

This action will look at the mimetype of the document that triggered the rule and request an appropriate MetadataExtracter from the default MetadataExtracterRegistry.

When a property already exists, it is not overwritten by the extractor. The description field extracted by the extractor should be ignored and the user1 field used instead. This meatdata quite easy to achieve, just override the out-of-the-box bean and re-configure the mapping.

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We inherit all the other mappings and just modify how the user1 field is used. This will require configuration like this, note these are new bean definitions, no overrides as in previous examples:.

All these extracted values are put into a map, ready for conversion to model-specific properties. Praesent tincidunt luctus ante, in pulvinar ante rutrum quis. The extractor class is named AudioMetadataExtractor and a corresponding properties file contains the mappings. Following is the code for the class. MetadataExtracterRegistry] [http-bioexec] Find supported: Sign up or log in Sign up using Google.

Aenean lobortis sodales alfresck It is likely that you will struggle to figure alfrecso what properties are extracted and their names. Set the following property in log4j.

Configuring metadata extraction

By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. This type has the acme: Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.


The extractor extends AbstractMappingMetadataExtracter and it needs to map extracted fields into a custom type. Sign up using Email and Password. Is the rule required? OpenDocument as an example of how to modify the configuration.

Let’s assume that a user property, user1will be used by the Alfresco users to fill in the description of the documents they edit.

MetadataExtracterRegistry] [http-bioexec] Find returning: You can clearly see that the PDFBox extractor is invoked so you know you have customized the correct one.

PdfBoxMetadataExtracter 6acadc76] The extractor uses a set of properties to map the extracted values to the document’s meta-data. Properties that cannot be converted to the required type, where a property exists in the data dictionary, can either be discarded or cause extraction failure default is failure. PDFBox Spring bean as follows:.

Here are some example of extracted property name and what content model property it maps to:. Change name of metadata-embedding-context. By default, the following will be populated by the extractor: By default, the extractor will not overwrite any properties already present in the document’s meta-data, but this can be changed by overriding the extractor’s bean definition.

On the space where you are uploading to, do you have rule set up to extract common metadata? There is also a log entry with information about what properties that were actually successfully mapped:. No I don’t have a rule setup on the space. Before reading more, open up the following: The official documentation is at: It is also very important to know that the property names are case sensitive.