package thredds.catalog2.xml.parser.stax;
import thredds.catalog2.xml.parser.ThreddsXmlParserException;
import thredds.catalog2.xml.names.ThreddsMetadataElementNames;
import thredds.catalog2.builder.ThreddsMetadataBuilder;
import thredds.catalog2.builder.ThreddsBuilderFactory;
import javax.xml.namespace.QName;
import javax.xml.stream.events.XMLEvent;
import javax.xml.stream.events.StartElement;
import javax.xml.stream.XMLEventReader;
/**
* _more_
*
* @author edavis
* @since 4.0
*/
class GeospatialRangeTypeParser extends AbstractElementParser
{
private final ThreddsMetadataBuilder.GeospatialCoverageBuilder parentBuilder;
private ThreddsMetadataBuilder.GeospatialRangeBuilder selfBuilder;
private CharContentOnlyElementParser.Factory startFac;
private CharContentOnlyElementParser.Factory sizeFac;
private CharContentOnlyElementParser.Factory resolutionFac;
private CharContentOnlyElementParser.Factory unitsFac;
private String startAsString;
private String sizeAsString;
private String resolutionAsString;
private String unitsAsString;
private GeospatialRangeTypeParser( QName elementName,
XMLEventReader reader, ThreddsBuilderFactory builderFactory,
ThreddsMetadataBuilder.GeospatialCoverageBuilder parentBuilder ) {
super( elementName, reader, builderFactory );
this.parentBuilder = parentBuilder;
this.startFac = new CharContentOnlyElementParser.Factory( ThreddsMetadataElementNames.SpatialRangeType_Start );
this.sizeFac = new CharContentOnlyElementParser.Factory( ThreddsMetadataElementNames.SpatialRangeType_Size );
this.resolutionFac = new CharContentOnlyElementParser.Factory( ThreddsMetadataElementNames.SpatialRangeType_Resolution );
this.unitsFac = new CharContentOnlyElementParser.Factory( ThreddsMetadataElementNames.SpatialRangeType_Units );
}
@Override
ThreddsMetadataBuilder.GeospatialRangeBuilder getSelfBuilder() {
return this.selfBuilder;
}
@Override
void parseStartElement()
throws ThreddsXmlParserException
{
StaxThreddsXmlParserUtils.readNextEventCheckItIsStartElementWithExpectedName( reader, this.elementName);
}
@Override
void handleChildStartElement() throws ThreddsXmlParserException
{
StartElement startElement = this.peekAtNextEventIfStartElement();
if ( this.startFac.isEventMyStartElement( startElement ))
{
CharContentOnlyElementParser startParser = this.startFac.getParser();
startParser.parseElement( this.reader );
this.startAsString = startParser.getValue();
}
else if ( this.sizeFac.isEventMyStartElement( startElement ))
{
CharContentOnlyElementParser parser = this.sizeFac.getParser();
parser.parseElement( this.reader );
this.sizeAsString = parser.getValue();
}
else if ( this.resolutionFac.isEventMyStartElement( startElement ))
{
CharContentOnlyElementParser parser = this.resolutionFac.getParser();
parser.parseElement( this.reader );
this.resolutionAsString = parser.getValue();
}
else if ( this.unitsFac.isEventMyStartElement( startElement ))
{
CharContentOnlyElementParser parser = this.unitsFac.getParser();
parser.parseElement( this.reader );
this.unitsAsString = parser.getValue();
}
else
// ToDo Save the results in a ThreddsXmlParserIssue (Warning) and report.
StaxThreddsXmlParserUtils.consumeElementAndConvertToXmlString( this.reader );
}
@Override
void postProcessingAfterEndElement()
throws ThreddsXmlParserException
{
if ( startAsString != null )
this.selfBuilder.setStart( this.parseDouble( startAsString ) );
if ( sizeAsString != null )
this.selfBuilder.setSize( this.parseDouble( sizeAsString ) );
if ( resolutionAsString != null )
this.selfBuilder.setResolution( this.parseDouble( resolutionAsString ) );
return;
}
private double parseDouble( String doubleAsString)
{
if ( doubleAsString == null ) return Double.NaN;
try {
return Double.parseDouble( doubleAsString);
}
catch( NumberFormatException e ) {
// ToDo add parse issue to
return Double.NaN;
}
}
static class Factory
{
private QName elementName;
Factory( QName elementName ) {
this.elementName = elementName;
}
boolean isEventMyStartElement( XMLEvent event ) {
return StaxThreddsXmlParserUtils.isEventStartOrEndElementWithMatchingName( event, this.elementName );
}
GeospatialRangeTypeParser getNewParser( XMLEventReader reader, ThreddsBuilderFactory builderFactory,
ThreddsMetadataBuilder.GeospatialCoverageBuilder parentBuilder ) {
return new GeospatialRangeTypeParser( this.elementName, reader, builderFactory, parentBuilder );
}
}
private static class CharContentOnlyElementParser
{
private QName elementName;
private String value;
private CharContentOnlyElementParser( QName elementName ) {
this.elementName = elementName;
}
String getValue() {
return this.value;
}
void parseElement( XMLEventReader reader )
throws ThreddsXmlParserException
{
StartElement startElement = StaxThreddsXmlParserUtils.readNextEventCheckItIsStartElementWithExpectedName( reader, this.elementName );
value = StaxThreddsXmlParserUtils.getCharacterContent( reader, this.elementName );
StaxThreddsXmlParserUtils.readNextEventCheckItIsEndElementWithExpectedName( reader, this.elementName );
}
static class Factory
{
private QName elementName;
Factory( QName elementName ) {
this.elementName = elementName;
}
boolean isEventMyStartElement( XMLEvent event ) {
return StaxThreddsXmlParserUtils.isEventStartOrEndElementWithMatchingName( event, this.elementName );
}
CharContentOnlyElementParser getParser() {
return new CharContentOnlyElementParser( this.elementName );
}
}
}
}