package thredds.catalog2.xml.parser.stax;
import thredds.catalog2.xml.parser.ThreddsXmlParserException;
import thredds.catalog2.xml.names.ThreddsMetadataElementNames;
import thredds.catalog2.builder.ThreddsBuilderFactory;
import thredds.catalog2.builder.ThreddsBuilder;
import thredds.catalog2.builder.ThreddsMetadataBuilder;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLEventReader;
import javax.xml.stream.events.XMLEvent;
import javax.xml.stream.events.StartElement;
import javax.xml.stream.events.Attribute;
/**
* _more_
*
* @author edavis
* @since 4.0
*/
class VariableGroupElementParser extends AbstractElementParser
{
private final ThreddsMetadataBuilder parentBuilder;
private ThreddsMetadataBuilder.VariableGroupBuilder selfBuilder;
private VariableElementParser.Factory varElemParserFactory;
private VariableElementParser varElemParser;
private VariableGroupElementParser( QName elementName,
XMLEventReader reader,
ThreddsBuilderFactory builderFactory,
ThreddsBuilder parentBuilder )
{
super( elementName, reader, builderFactory);
this.parentBuilder = (ThreddsMetadataBuilder) parentBuilder;
this.varElemParserFactory = new VariableElementParser.Factory();
}
void parseStartElement()
throws ThreddsXmlParserException
{
StartElement startElement = this.getNextEventIfStartElementIsMine();
this.selfBuilder = this.parentBuilder.addVariableGroupBuilder();
Attribute att = startElement.getAttributeByName( ThreddsMetadataElementNames.VariablesElement_vocabAuthorityId );
if ( att != null )
this.selfBuilder.setVocabularyAuthorityId( att.getValue() );
att = startElement.getAttributeByName( ThreddsMetadataElementNames.VariablesElement_vocabAuthorityUrl );
if ( att != null)
this.selfBuilder.setVocabularyAuthorityUrl( att.getValue());
}
void handleChildStartElement()
throws ThreddsXmlParserException
{
StartElement startElement = this.peekAtNextEventIfStartElement();
if ( this.varElemParserFactory.isEventMyStartElement( startElement ))
{
this.varElemParser = this.varElemParserFactory.getNewParser( this.reader, this.builderFactory, this.selfBuilder );
this.varElemParser.parseElement();
}
}
void postProcessingAfterEndElement() throws ThreddsXmlParserException {
return;
}
ThreddsBuilder getSelfBuilder() {
return this.selfBuilder;
}
static class Factory
{
private QName elementName;
Factory() {
this.elementName = ThreddsMetadataElementNames.VariablesElement;
}
boolean isEventMyStartElement( XMLEvent event ) {
return StaxThreddsXmlParserUtils.isEventStartOrEndElementWithMatchingName( event, this.elementName );
}
VariableGroupElementParser getNewParser( XMLEventReader reader,
ThreddsBuilderFactory builderFactory,
ThreddsBuilder parentBuilder)
{
return new VariableGroupElementParser( this.elementName, reader, builderFactory, parentBuilder );
}
}
static class VariableElementParser
{
private final QName elementName;
private final XMLEventReader reader;
private final ThreddsBuilderFactory builderFactory;
private final ThreddsMetadataBuilder.VariableGroupBuilder parentBuilder;
private ThreddsMetadataBuilder.VariableBuilder selfBuilder;
private VariableElementParser( QName elementName,
XMLEventReader reader,
ThreddsBuilderFactory builderFactory,
ThreddsBuilder parentBuilder ) {
this.elementName = elementName;
this.reader = reader;
this.builderFactory = builderFactory;
this.parentBuilder = (ThreddsMetadataBuilder.VariableGroupBuilder) parentBuilder;
}
void parseElement()
throws ThreddsXmlParserException
{
StartElement startElement
= StaxThreddsXmlParserUtils.readNextEventCheckItIsStartElementWithExpectedName( this.reader, this.elementName );
Attribute att = startElement.getAttributeByName( ThreddsMetadataElementNames.VariablesElement_VariableElement_name );
String name = att != null ? att.getValue() : null;
att = startElement.getAttributeByName( ThreddsMetadataElementNames.VariablesElement_VariableElement_units );
String units = att != null ? att.getValue() : null;
att = startElement.getAttributeByName( ThreddsMetadataElementNames.VariablesElement_VariableElement_vocabularyId );
String vocabularyId = att != null ? att.getValue() : null;
att = startElement.getAttributeByName( ThreddsMetadataElementNames.VariablesElement_VariableElement_vocabularyName );
String vocabularyName = att != null ? att.getValue() : null;
String description = StaxThreddsXmlParserUtils.getCharacterContent( this.reader, this.elementName );
this.selfBuilder = parentBuilder.addVariableBuilder( name, description, units, vocabularyId, vocabularyName );
StaxThreddsXmlParserUtils.readNextEventCheckItIsEndElementWithExpectedName( this.reader, this.elementName );
}
static class Factory
{
private QName elementName;
Factory() {
this.elementName = ThreddsMetadataElementNames.VariablesElement_VariableElement;
}
boolean isEventMyStartElement( XMLEvent event ) {
return StaxThreddsXmlParserUtils.isEventStartOrEndElementWithMatchingName( event, this.elementName );
}
VariableElementParser getNewParser( XMLEventReader reader,
ThreddsBuilderFactory builderFactory,
ThreddsBuilder parentBuilder) {
return new VariableElementParser( this.elementName, reader, builderFactory, parentBuilder );
}
}
}
}