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UpdateDefinition.cs
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UpdateDefinition.cs
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/* Copyright 2010-present MongoDB Inc.
*
* 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 System;
using System.Linq;
using MongoDB.Bson;
using MongoDB.Bson.Serialization;
using MongoDB.Driver.Core.Misc;
using MongoDB.Driver.Linq;
namespace MongoDB.Driver
{
/// <summary>
/// Base class for updates.
/// </summary>
/// <typeparam name="TDocument">The type of the document.</typeparam>
public abstract class UpdateDefinition<TDocument>
{
/// <summary>
/// Renders the update to a <see cref="BsonValue"/>.
/// </summary>
/// <param name="documentSerializer">The document serializer.</param>
/// <param name="serializerRegistry">The serializer registry.</param>
/// <returns>A <see cref="BsonValue"/>.</returns>
public virtual BsonValue Render(IBsonSerializer<TDocument> documentSerializer, IBsonSerializerRegistry serializerRegistry)
{
return Render(documentSerializer, serializerRegistry, LinqProvider.V3);
}
/// <summary>
/// Renders the update to a <see cref="BsonValue"/>.
/// </summary>
/// <param name="documentSerializer">The document serializer.</param>
/// <param name="serializerRegistry">The serializer registry.</param>
/// <param name="linqProvider">The LINQ provider.</param>
/// <returns>A <see cref="BsonValue"/>.</returns>
public abstract BsonValue Render(IBsonSerializer<TDocument> documentSerializer, IBsonSerializerRegistry serializerRegistry, LinqProvider linqProvider);
/// <summary>
/// Performs an implicit conversion from <see cref="BsonDocument"/> to <see cref="UpdateDefinition{TDocument}"/>.
/// </summary>
/// <param name="document">The document.</param>
/// <returns>
/// The result of the conversion.
/// </returns>
public static implicit operator UpdateDefinition<TDocument>(BsonDocument document)
{
if (document == null)
{
return null;
}
return new BsonDocumentUpdateDefinition<TDocument>(document);
}
/// <summary>
/// Performs an implicit conversion from <see cref="System.String"/> to <see cref="UpdateDefinition{TDocument}"/>.
/// </summary>
/// <param name="json">The JSON string.</param>
/// <returns>
/// The result of the conversion.
/// </returns>
public static implicit operator UpdateDefinition<TDocument>(string json)
{
if (json == null)
{
return null;
}
return new JsonUpdateDefinition<TDocument>(json);
}
/// <summary>
/// Performs an implicit conversion from <see cref="PipelineDefinition{TDocument, TDocument}"/> to <see cref="UpdateDefinition{TDocument}"/>.
/// </summary>
/// <param name="pipeline">The pipeline.</param>
/// <returns>
/// The result of the conversion.
/// </returns>
public static implicit operator UpdateDefinition<TDocument>(PipelineDefinition<TDocument, TDocument> pipeline)
{
if (pipeline == null)
{
return null;
}
return new PipelineUpdateDefinition<TDocument>(pipeline);
}
}
/// <summary>
/// A <see cref="PipelineDefinition{TDocument,TDocument}"/> based update definition.
/// </summary>
/// <typeparam name="TDocument">The type of the document.</typeparam>
public sealed class PipelineUpdateDefinition<TDocument> : UpdateDefinition<TDocument>
{
private readonly PipelineDefinition<TDocument, TDocument> _pipeline;
/// <summary>
/// Initializes a new instance of the <see cref="PipelineUpdateDefinition{TDocument}"/> class.
/// </summary>
/// <param name="pipeline">The pipeline.</param>
public PipelineUpdateDefinition(PipelineDefinition<TDocument, TDocument> pipeline)
{
_pipeline = Ensure.IsNotNull(pipeline, nameof(pipeline));
}
/// <summary>
/// Gets the pipeline.
/// </summary>
public PipelineDefinition<TDocument, TDocument> Pipeline => _pipeline;
/// <summary>
/// Renders the update to a <see cref="BsonValue"/> that represents <see cref="BsonArray"/>.
/// </summary>
/// <param name="documentSerializer">The document serializer.</param>
/// <param name="serializerRegistry">The serializer registry.</param>
/// <param name="linqProvider">The LINQ provider.</param>
/// <returns>A <see cref="BsonValue"/>.</returns>
public override BsonValue Render(IBsonSerializer<TDocument> documentSerializer, IBsonSerializerRegistry serializerRegistry, LinqProvider linqProvider)
{
var renderedPipeline = _pipeline.Render(documentSerializer, serializerRegistry, linqProvider);
return new BsonArray(renderedPipeline.Documents);
}
/// <inheritdoc />
public override string ToString()
{
var serializerRegistry = BsonSerializer.SerializerRegistry;
var inputSerializer = serializerRegistry.GetSerializer<TDocument>();
return ToString(inputSerializer, serializerRegistry);
}
/// <summary>
/// Returns a <see cref="System.String" /> that represents this instance.
/// </summary>
/// <param name="inputSerializer">The input serializer.</param>
/// <param name="serializerRegistry">The serializer registry.</param>
/// <returns>
/// A <see cref="System.String" /> that represents this instance.
/// </returns>
public string ToString(IBsonSerializer<TDocument> inputSerializer, IBsonSerializerRegistry serializerRegistry)
{
return ToString(inputSerializer, serializerRegistry, LinqProvider.V3);
}
/// <summary>
/// Returns a <see cref="System.String" /> that represents this instance.
/// </summary>
/// <param name="inputSerializer">The input serializer.</param>
/// <param name="serializerRegistry">The serializer registry.</param>
/// <param name="linqProvider">The LINQ provider.</param>
/// <returns>
/// A <see cref="System.String" /> that represents this instance.
/// </returns>
public string ToString(IBsonSerializer<TDocument> inputSerializer, IBsonSerializerRegistry serializerRegistry, LinqProvider linqProvider)
{
var renderedPipeline = Render(inputSerializer, serializerRegistry, linqProvider);
return renderedPipeline.ToJson();
}
}
/// <summary>
/// A <see cref="BsonDocument"/> based update.
/// </summary>
/// <typeparam name="TDocument">The type of the document.</typeparam>
public sealed class BsonDocumentUpdateDefinition<TDocument> : UpdateDefinition<TDocument>
{
private readonly BsonDocument _document;
/// <summary>
/// Initializes a new instance of the <see cref="BsonDocumentUpdateDefinition{TDocument}"/> class.
/// </summary>
/// <param name="document">The document.</param>
public BsonDocumentUpdateDefinition(BsonDocument document)
{
_document = Ensure.IsNotNull(document, nameof(document));
}
/// <summary>
/// Gets the document.
/// </summary>
public BsonDocument Document
{
get { return _document; }
}
/// <inheritdoc />
public override BsonValue Render(IBsonSerializer<TDocument> documentSerializer, IBsonSerializerRegistry serializerRegistry, LinqProvider linqProvider)
{
return _document;
}
}
/// <summary>
/// A JSON <see cref="String" /> based update.
/// </summary>
/// <typeparam name="TDocument">The type of the document.</typeparam>
public sealed class JsonUpdateDefinition<TDocument> : UpdateDefinition<TDocument>
{
private readonly string _json;
/// <summary>
/// Initializes a new instance of the <see cref="JsonUpdateDefinition{TDocument}"/> class.
/// </summary>
/// <param name="json">The json.</param>
public JsonUpdateDefinition(string json)
{
_json = Ensure.IsNotNullOrEmpty(json, nameof(json));
}
/// <summary>
/// Gets the json.
/// </summary>
public string Json
{
get { return _json; }
}
/// <inheritdoc />
public override BsonValue Render(IBsonSerializer<TDocument> documentSerializer, IBsonSerializerRegistry serializerRegistry, LinqProvider linqProvider)
{
return BsonDocument.Parse(_json);
}
}
/// <summary>
/// An <see cref="Object" /> based update.
/// </summary>
/// <typeparam name="TDocument">The type of the document.</typeparam>
public sealed class ObjectUpdateDefinition<TDocument> : UpdateDefinition<TDocument>
{
private readonly object _obj;
/// <summary>
/// Initializes a new instance of the <see cref="ObjectUpdateDefinition{TDocument}"/> class.
/// </summary>
/// <param name="obj">The object.</param>
public ObjectUpdateDefinition(object obj)
{
_obj = Ensure.IsNotNull(obj, nameof(obj));
}
/// <summary>
/// Gets the object.
/// </summary>
public object Object
{
get { return _obj; }
}
/// <inheritdoc />
public override BsonValue Render(IBsonSerializer<TDocument> documentSerializer, IBsonSerializerRegistry serializerRegistry, LinqProvider linqProvider)
{
var serializer = serializerRegistry.GetSerializer(_obj.GetType());
return new BsonDocumentWrapper(_obj, serializer);
}
}
}