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DocumentFragment.cs
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DocumentFragment.cs
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//
// DocumentFragment.cs
//
// Copyright (c) 2017 Couchbase, Inc All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
using Couchbase.Lite.Internal.Doc;
using JetBrains.Annotations;
namespace Couchbase.Lite
{
/// <summary>
/// DocumentFragment provides access to a <see cref="Document"/> object. It also provides subscript access
/// by key to the data values of the wrapped document.
/// </summary>
public sealed class DocumentFragment : IDictionaryFragment
{
#region Properties
/// <summary>
/// Gets the <see cref="Document"/> from the document fragment
/// </summary>
[CanBeNull]
public Document Document { get; }
/// <summary>
/// Gets whether or not this document is in the database
/// </summary>
public bool Exists => Document != null;
/// <inheritdoc />
public IFragment this[string key] => Document?[key] ?? Fragment.Null;
#endregion
#region Constructors
internal DocumentFragment(Document doc)
{
Document = doc;
}
#endregion
}
}