public override AttributeDefinition VisitAttribute_name_part(V1QueryParser.Attribute_name_partContext context)
{
var attributeName = context.NAME().GetText();
var downcast = context.downcast()?.asset_type_token().GetText();
var filter = context.attribute_filter();
AttributeDefinition result;
if (!_metaModel.TryGetAttributeDefinition(_rootAssetType, attributeName, out result))
{
throw new InvalidOperationException($"Cannot find attribute definition {_rootAssetType.Token}.{attributeName}");
}
if (!string.IsNullOrEmpty(downcast))
{
var downcastAssetType = _metaModel.GetAssetType(downcast);
result = result.CreateDowncastAttributeDefinition(downcastAssetType);
}
if (filter != null)
{
var subVisitor = new FilterVisitor(result.RelatedAssetType, _metaModel);
var subFilter = subVisitor.Visit(filter);
result = result.CreateFilteredAttributeDefinition(subFilter);
}
return(result);
}
public static AttributeDefinition Parse(string attributeDefinitionToken, MetaModel metaModel)
{
ICharStream charStream = new AntlrInputStream(attributeDefinitionToken);
ITokenSource tokenSource = new V1QueryLexer(charStream);
ITokenStream tokenStream = new CommonTokenStream(tokenSource);
var parser = new V1QueryParser(tokenStream);
var parseTree = parser.attribute_definition_token();
var assetTypeToken = parseTree.asset_type_token().GetText();
var assetType = metaModel.GetAssetType(assetTypeToken);
var attributeName = parseTree.attribute_name().GetText();
return(Parse(attributeName, assetType, metaModel));
}
public static QueryBuilder For(string assetTypeToken, MetaModel metaModel)
{
var assetType = metaModel.GetAssetType(assetTypeToken);
return new QueryBuilder(assetType, metaModel);
}