Package org.alfresco.repo.content.metadata

Class MetadataExtracterRegistry

java.lang.Object
org.alfresco.repo.content.metadata.MetadataExtracterRegistry
@AlfrescoPublicApi public class MetadataExtracterRegistry extends Object
Holds and provides the most appropriate metadate extracter for a particular mimetype.

The extracters themselves know how well they are able to extract metadata.

Author:
Jesper Steen Møller
See Also:

  • Constructor Details

    • MetadataExtracterRegistry

      public MetadataExtracterRegistry()

  • Method Details

    • resetCache

      public void resetCache()
      Force the registry to drop its cache of extractors. This is useful for the case where an extractor becomes available only after the registry has initialized the cache.

    • register

      public void register(MetadataExtracter extracter)
      Register an instance of an extracter for use
      Parameters:
      extracter - an extracter

    • setAsyncExtractEnabled

      public void setAsyncExtractEnabled(boolean asyncExtractEnabled)

    • setAsyncEmbedEnabled

      public void setAsyncEmbedEnabled(boolean asyncEmbedEnabled)

    • getExtractor

      public MetadataExtracter getExtractor(String sourceMimetype, long sourceSizeInBytes)
      Returns the AsynchronousExtractor if it is able to perform the extraction and is enabled. Failing that it calls getExtracter(String).
      Parameters:
      sourceSizeInBytes - size of the source content.
      sourceMimetype - the source MIMETYPE of the extraction
      Returns:
      Returns a metadata extractor that can extract metadata from the chosen MIME type.

    • getExtracter

      public MetadataExtracter getExtracter(String sourceMimetype)
      Gets the best metadata extracter. This is a combination of the most reliable and the most performant extracter.

      The result is cached for quicker access next time.

      Parameters:
      sourceMimetype - the source MIME of the extraction
      Returns:
      Returns a metadata extracter that can extract metadata from the chosen MIME type.

    • getEmbedder

      public MetadataEmbedder getEmbedder(String sourceMimetype, long sourceSizeInBytes)
      Returns the AsynchronousExtractor if it is able to perform the embedding and is enabled. Failing that it calls getEmbedder(String).
      Parameters:
      sourceSizeInBytes - size of the source content.
      sourceMimetype - the source MIMETYPE of the extraction
      Returns:
      Returns a metadata extractor that can extract metadata from the chosen MIME type.

    • getEmbedder

      public MetadataEmbedder getEmbedder(String sourceMimetype)
      Gets the best metadata embedder. This is a combination of the most reliable and the most performant embedder.

      The result is cached for quicker access next time.

      Parameters:
      sourceMimetype - the source MIME of the extraction
      Returns:
      Returns a metadata embedder that can embed metadata in the chosen MIME type.