Class GDALParser

All Implemented Interfaces:
Serializable, Parser

public class GDALParser extends AbstractParser
Wraps execution of the Geospatial Data Abstraction Library (GDAL) gdalinfo tool used to extract geospatial information out of hundreds of geo file formats.

The parser requires the installation of GDAL and for gdalinfo to be located on the path.

Basic information (Size, Coordinate System, Bounding Box, Driver, and resource info) are extracted as metadata, and the remaining metadata patterns are extracted and added.

The output of the command is available from the provided ContentHandler in the parse(InputStream, ContentHandler, Metadata, ParseContext) method.

See Also:
  • Constructor Details

    • GDALParser

      public GDALParser()
  • Method Details

    • getCommand

      public String getCommand()
    • setCommand

      public void setCommand(String command)
    • processCommand

      public String processCommand(InputStream stream)
    • getSupportedTypes

      public Set<MediaType> getSupportedTypes(ParseContext context)
      Description copied from interface: Parser
      Returns the set of media types supported by this parser when used with the given parse context.
      context - parse context
      immutable set of media types
    • parse

      public void parse(InputStream stream, ContentHandler handler, Metadata metadata, ParseContext context) throws IOException, SAXException, TikaException
      Description copied from interface: Parser
      Parses a document stream into a sequence of XHTML SAX events. Fills in related document metadata in the given metadata object.

      The given document stream is consumed but not closed by this method. The responsibility to close the stream remains on the caller.

      Information about the parsing context can be passed in the context parameter. See the parser implementations for the kinds of context information they expect.

      stream - the document stream (input)
      handler - handler for the XHTML SAX events (output)
      metadata - document metadata (input and output)
      context - parse context
      IOException - if the document stream could not be read
      SAXException - if the SAX events could not be processed
      TikaException - if the document could not be parsed