org.apache.tika.parser.gdal

Class GDALParser

java.lang.Object

org.apache.tika.parser.AbstractParser

org.apache.tika.parser.gdal.GDALParser

All Implemented Interfaces:

java.io.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:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
GDALParser()

Method Summary

Modifier and Type	Method and Description
java.lang.String	getCommand()
java.util.Set<MediaType>	getSupportedTypes(ParseContext context) Returns the set of media types supported by this parser when used with the given parse context.
void	parse(java.io.InputStream stream, org.xml.sax.ContentHandler handler, Metadata metadata, ParseContext context) Parses a document stream into a sequence of XHTML SAX events.
java.lang.String	processCommand(java.io.InputStream stream)
void	setCommand(java.lang.String command)

Methods inherited from class org.apache.tika.parser.AbstractParser

parse

Methods inherited from class java.lang.Object

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

Constructor Detail

GDALParser

public GDALParser()

Method Detail

setCommand

public void setCommand(java.lang.String command)

getCommand

public java.lang.String getCommand()

processCommand

public java.lang.String processCommand(java.io.InputStream stream)

getSupportedTypes

public java.util.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.

Parameters:

context - parse context

Returns:

immutable set of media types

parse

public void parse(java.io.InputStream stream,
                  org.xml.sax.ContentHandler handler,
                  Metadata metadata,
                  ParseContext context)
           throws java.io.IOException,
                  org.xml.sax.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.

Parameters:

stream - the document stream (input)

handler - handler for the XHTML SAX events (output)

metadata - document metadata (input and output)

context - parse context

Throws:

java.io.IOException - if the document stream could not be read

org.xml.sax.SAXException - if the SAX events could not be processed

TikaException - if the document could not be parsed