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View Code? Open in Web Editor NEWA simple Darwin Core Archive Reader for dotnet
License: MIT License
A simple Darwin Core Archive Reader for dotnet
License: MIT License
If index field is already defined in meta.xml then a duplicate id field is added to the metadata. Skip this step if id points to a index that already exists
link should be https://github.com/pjoiner/DwC-A_dotnet/wiki
Work around the IOException meta.xml already exists
For netstandard2.0 support use System.Memory
Breaking change on namespace only
Since default values aren't accessible from FieldMetaData. Should just return the list of FieldType values with no index.
If applicable
How does this affect older apps that target net5.0?
Microsoft.SourceLink.GitHub => 8.0.0
Should be writer.WriteLine(rowBuilder.Build());
ArchiveFolder may be null on Dispose which throws an NullReference exception. Need a null check
Affected methods
T Convert(string term)
T Convert(int index)
object Convert(string term, Type type)
object Convert(int index, Type type)
After doing some bench marking it was discovered that it is faster to use a LinQ Grouping or ILookup than to use the index code in the FileReader. Remove the code and associated unit tests to simplify the codebase.
The following line will only read up to the first newline
"abc,"def\nghi",lmn"
So only the following fields will be returned
abc
def
We need to allow the tokenizer to cooperate with the StreamReader to ask for more data so it can parse the complete line.
This will be useful with dotnet interactive. Also, this should be configurable.
Sometimes there are multiple files in the archive with the same rowtype
If no meta.xml file is found then the folder must contain only one data file or throw a more descriptive exception.
This is to support the LinQPad 6 driver
Clicking on documentation link returns 404
By design the DwC-A standard allows the addition of terms. The Terms class should all extension with custom terms. Suggest using a partial class.
If there is no meta.xml file then the Fields property of CoreFileMetaData and ExtensionFileMetaData will be null. Create an empty FieldMetaData object using null for the Id parameter to prevent possible nullReferenceExceptions.
public static IEnumerable<string> GetListOf(this IRow row, string term)
{
var delimiter = row.FieldMetaData
.FirstOrDefault(f => f.Term == term)?
.DelimitedBy;
if(delimiter == null)
{
return new List<string>(){row[term]};
}
return row[term].Split(delimiter);
}
public static bool TryGetListOf(this IRow row, string term, out IEnumerable<string> list)
{
if(row.FieldMetaData.IndexOf(term) == -1)
{
list = null;
return false;
}
list = row.GetListOf(term);
return true;
}
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