org.deegree.model.feature
Class GMLFeatureAdapter

java.lang.Object
  org.deegree.model.feature.GMLFeatureAdapter

public class GMLFeatureAdapter
extends Object

Exports feature instances to their GML representation.

Has support for XLink output and to disable XLink output (which is generally not feasible).

Also responsible for "xlinking" features: if a feature occurs several times in a feature collection, it must be exported only once - all other occurences must use xlink-attributes in the surrounding property element to reference the feature. TODO Handle FeatureCollections like ordinary Features (needs changes in feature model). TODO Separate cycle check (for suppressXLinkOutput). TODO Use a more straight-forward approach to export DOM representations. TODO Handle multiple application schemas (in xsi:schemaLocation attribute).

Version:

$Revision: 9343 $, $Date: 2007-12-27 14:30:32 +0100 (Do, 27 Dez 2007) $

Author:

Markus Schneider , last edited by: $Author: apoth $

Constructor Summary

GMLFeatureAdapter()
Creates a new GMLFeatureAdapter instance with enabled XLink output.

GMLFeatureAdapter(boolean suppressXLinkOutput)
Creates a new instance GMLFeatureAdapter with configurable XLink output.

GMLFeatureAdapter(boolean suppressXLinkOutput, String schemaURL)
Creates a new instance GMLFeatureAdapter with configurable XLink output.

GMLFeatureAdapter(String schemaURL)
Creates a new GMLFeatureAdapter instance with enabled XLink output and schema reference.

Method Summary

void	append(Element root, Feature feature) Appends the DOM representation of the given feature to the also given Node.
void	append(Element root, FeatureCollection fc) Appends the DOM representation of the given FeatureCollection to the also given Node.
GMLFeatureDocument	export(Feature feature) Export a Feature to it's XML representation.
GMLFeatureCollectionDocument	export(FeatureCollection fc) Export a FeatureCollection to it's XML representation.
void	export(FeatureCollection fc, OutputStream os) Exports an instance of a FeatureCollection to the passed OutputStream formatted as GML.
void	export(FeatureCollection fc, OutputStream os, String charsetName) Exports a FeatureCollection instance to the passed OutputStream formatted as GML.
void	export(Feature feature, OutputStream os) Exports an instance of a Feature to the passed OutputStream formatted as GML.
void	export(Feature feature, OutputStream os, String charsetName) Exports a Feature instance to the passed OutputStream formatted as GML.

Methods inherited from class java.lang.Object

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

Constructor Detail

GMLFeatureAdapter

public GMLFeatureAdapter()

Creates a new GMLFeatureAdapter instance with enabled XLink output.

GMLFeatureAdapter

public GMLFeatureAdapter(String schemaURL)

Creates a new GMLFeatureAdapter instance with enabled XLink output and schema reference.

Parameters:

schemaURL - URL of schema document (used as xsi:schemaLocation attribute in XML output)

GMLFeatureAdapter

public GMLFeatureAdapter(boolean suppressXLinkOutput)

Creates a new instance GMLFeatureAdapter with configurable XLink output.

Parameters:

suppressXLinkOutput - set to true, if no XLinks shall be used

GMLFeatureAdapter

public GMLFeatureAdapter(boolean suppressXLinkOutput,
                         String schemaURL)

Creates a new instance GMLFeatureAdapter with configurable XLink output.

Parameters:

suppressXLinkOutput - set to true, if no XLinks shall be used

schemaURL - URL of schema document (used as xsi:schemaLocation attribute in XML output)

Method Detail

append

public void append(Element root,
                   Feature feature)
            throws FeatureException,
                   IOException,
                   SAXException

Appends the DOM representation of the given feature to the also given Node.

TODO do this a better way (append nodes directly without serializing to string and parsing it again)

Parameters:

root -

feature -

Throws:

FeatureException

IOException

SAXException

export

public GMLFeatureDocument export(Feature feature)
                          throws IOException,
                                 FeatureException,
                                 XMLException,
                                 SAXException

Export a Feature to it's XML representation.

Parameters:

feature - feature to export

Returns:

XML representation of feature

Throws:

IOException

FeatureException

XMLException

SAXException

append

public void append(Element root,
                   FeatureCollection fc)
            throws FeatureException,
                   IOException,
                   SAXException

Appends the DOM representation of the given FeatureCollection to the also given Node.

TODO do this a better way (append nodes directly without serializing to string and parsing it again)

Parameters:

root -

fc -

Throws:

FeatureException

IOException

SAXException

export

public GMLFeatureCollectionDocument export(FeatureCollection fc)
                                    throws IOException,
                                           FeatureException,
                                           XMLException,
                                           SAXException

Export a FeatureCollection to it's XML representation.

Parameters:

fc - feature collection

Returns:

XML representation of feature collection

Throws:

IOException

FeatureException

XMLException

SAXException

export

public void export(FeatureCollection fc,
                   OutputStream os)
            throws IOException,
                   FeatureException

Exports an instance of a FeatureCollection to the passed OutputStream formatted as GML. Uses the deegree system character set for the XML header encoding information.

Parameters:

fc - feature collection to export

os - output stream to write to

Throws:

IOException

FeatureException

export

public void export(FeatureCollection fc,
                   OutputStream os,
                   String charsetName)
            throws IOException,
                   FeatureException

Exports a FeatureCollection instance to the passed OutputStream formatted as GML.

Parameters:

fc - feature collection to export

os - output stream to write to

charsetName - name of the used charset/encoding (for the XML header)

Throws:

IOException

FeatureException

export

public void export(Feature feature,
                   OutputStream os)
            throws IOException,
                   FeatureException

Exports an instance of a Feature to the passed OutputStream formatted as GML. Uses the deegree system character set for the XML header encoding information.

Parameters:

feature - feature to export

os - output stream to write to

Throws:

IOException

FeatureException

export

public void export(Feature feature,
                   OutputStream os,
                   String charsetName)
            throws IOException,
                   FeatureException

Exports a Feature instance to the passed OutputStream formatted as GML.

Parameters:

feature - feature to export

os - output stream to write to

charsetName - name of the used charset/encoding (for the XML header)

Throws:

IOException

FeatureException