MetadataDictionary Class

Definition

Namespace: Savvyio

Assemblies: Savvyio.Core.dll

Source: src/Savvyio.Core/MetadataDictionary.cs

Provides a default implementation of the IMetadataDictionary interface. This class cannot be inherited.

public sealed class MetadataDictionary : IMetadataDictionary, IDictionary<string, object>, ICollection<KeyValuePair<string, object>>, IEnumerable<KeyValuePair<string, object>>, IEnumerable

Inheritance: object

MetadataDictionary

Implements: IMetadataDictionary

IDictionary<string, object>

ICollection<KeyValuePair<string, object>>

IEnumerable<KeyValuePair<string, object>>

IEnumerable

Examples

This example shows how to store reserved metadata keys and custom values in a case-insensitive metadata dictionary.

using Savvyio;

namespace ExampleApp;

public sealed class MetadataDictionaryExample
{
    public bool HasCorrelationId()
    {
        var metadata = new MetadataDictionary { ["correlationid"] = "corr-42", ["tenant"] = "north-europe" };
        return metadata.ContainsKey(MetadataDictionary.CorrelationId) && metadata["tenant"].ToString() == "north-europe";
    }
}

Constructors

Name	Description
MetadataDictionary()	Initializes a new instance of the MetadataDictionary class.

Fields

Name	Description
AggregateVersion	AggregateVersion is a reserved keyword.
CausationId	CausationId is a reserved keyword.
CorrelationId	CorrelationId is a reserved keyword.
EventId	EventId is a reserved keyword.
MemberType	MemberType is a reserved keyword.
RequestId	RequestId is a reserved keyword.
Timestamp	Timestamp is a reserved keyword.

Properties

Name	Description
Count	Gets the number of elements contained in the MetadataDictionary.
IsReadOnly	Gets a value indicating whether the MetadataDictionaryis read-only.
this[string]	Gets or sets the element with the specified key.
Keys	Gets an ICollection<T> containing the keys of the MetadataDictionary.
ReservedKeywords	Gets a list of the reserved keywords.
Values	Gets an ICollection<T> containing the values in the MetadataDictionary.

Methods

Name	Description
Add(KeyValuePair<string, object>)	Adds an item to the MetadataDictionary.
Add(string, object)	Adds an element with the provided key and value to the MetadataDictionary.
Clear()	Removes all items from the MetadataDictionary.
Contains(KeyValuePair<string, object>)	Determines whether the MetadataDictionary contains a specific value.
ContainsKey(string)	Determines whether the MetadataDictionary contains an element with the specified key.
CopyTo(KeyValuePair<string, object>[], int)	Copies the elements of the MetadataDictionary to an array of type KeyValuePair<TKey, TValue>, starting at the specified array index.
GetEnumerator()	Returns an enumerator that iterates through the collection.
Remove(KeyValuePair<string, object>)	Removes the first occurrence of a specific object from the MetadataDictionary.
Remove(string)	Removes the element with the specified key from the MetadataDictionary.
TryGetValue(string, out object)	Gets the value associated with the specified key.

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