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ArrayFilterDefinition.cs
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ArrayFilterDefinition.cs
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/* Copyright 2017-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 MongoDB.Bson;
using MongoDB.Bson.Serialization;
using MongoDB.Driver.Core.Misc;
using MongoDB.Driver.Linq;
using System;
namespace MongoDB.Driver
{
/// <summary>
/// Base class for array filters.
/// </summary>
public abstract class ArrayFilterDefinition
{
// public properties
/// <summary>
/// Gets the type of an item.
/// </summary>
/// <value>
/// The type of an item.
/// </value>
public abstract Type ItemType { get; }
// public methods
/// <summary>
/// Renders the array filter to a <see cref="BsonDocument" />.
/// </summary>
/// <param name="itemSerializer">The item serializer.</param>
/// <param name="serializerRegistry">The serializer registry.</param>
/// <param name="linqProvider">The LINQ provider.</param>
/// <returns>
/// A <see cref="BsonDocument" />.
/// </returns>
public abstract BsonDocument Render(IBsonSerializer itemSerializer, IBsonSerializerRegistry serializerRegistry, LinqProvider linqProvider);
}
/// <summary>
/// Base class for array filters.
/// </summary>
/// <typeparam name="TItem">The type of an item.</typeparam>
public abstract class ArrayFilterDefinition<TItem> : ArrayFilterDefinition
{
// public properties
/// <inheritdoc />
public override Type ItemType => typeof(TItem);
// implicit conversions
/// <summary>
/// Performs an implicit conversion from <see cref="BsonDocument"/> to <see cref="ArrayFilterDefinition{TItem}"/>.
/// </summary>
/// <param name="document">The document.</param>
/// <returns>
/// The result of the conversion.
/// </returns>
public static implicit operator ArrayFilterDefinition<TItem>(BsonDocument document)
{
if (document == null)
{
return null;
}
return new BsonDocumentArrayFilterDefinition<TItem>(document);
}
/// <summary>
/// Performs an implicit conversion from <see cref="System.String"/> to <see cref="ArrayFilterDefinition{TItem}"/>.
/// </summary>
/// <param name="json">The JSON string.</param>
/// <returns>
/// The result of the conversion.
/// </returns>
public static implicit operator ArrayFilterDefinition<TItem>(string json)
{
if (json == null)
{
return null;
}
return new JsonArrayFilterDefinition<TItem>(json);
}
// public methods
/// <summary>
/// Renders the array filter to a <see cref="BsonDocument" />.
/// </summary>
/// <param name="itemSerializer">The item serializer.</param>
/// <param name="serializerRegistry">The serializer registry.</param>
/// <param name="linqProvider">The LINQ provider.</param>
/// <returns>
/// A <see cref="BsonDocument" />.
/// </returns>
public abstract BsonDocument Render(IBsonSerializer<TItem> itemSerializer, IBsonSerializerRegistry serializerRegistry, LinqProvider linqProvider);
}
/// <summary>
/// A <see cref="BsonDocument"/> based array filter.
/// </summary>
/// <typeparam name="TItem">The type of an item.</typeparam>
public sealed class BsonDocumentArrayFilterDefinition<TItem> : ArrayFilterDefinition<TItem>
{
// private fields
private readonly BsonDocument _document;
// constructors
/// <summary>
/// Initializes a new instance of the <see cref="BsonDocumentArrayFilterDefinition{TItem}"/> class.
/// </summary>
/// <param name="document">The document.</param>
public BsonDocumentArrayFilterDefinition(BsonDocument document)
{
_document = Ensure.IsNotNull(document, nameof(document));
}
// public properties
/// <summary>
/// Gets the document.
/// </summary>
/// <value>
/// The document.
/// </value>
public BsonDocument Document => _document;
// public methods
/// <inheritdoc />
public override BsonDocument Render(IBsonSerializer itemSerializer, IBsonSerializerRegistry serializerRegistry, LinqProvider linqProvider)
{
return Render((IBsonSerializer<TItem>)itemSerializer, serializerRegistry, linqProvider);
}
/// <inheritdoc />
public override BsonDocument Render(IBsonSerializer<TItem> itemSerializer, IBsonSerializerRegistry serializerRegistry, LinqProvider linqProvider)
{
return _document;
}
}
/// <summary>
/// A JSON <see cref="String"/> based array filter.
/// </summary>
/// <typeparam name="TItem">The type of an item.</typeparam>
public sealed class JsonArrayFilterDefinition<TItem> : ArrayFilterDefinition<TItem>
{
// private fields
private readonly BsonDocument _document;
private readonly string _json;
// constructors
/// <summary>
/// Initializes a new instance of the <see cref="BsonDocumentArrayFilterDefinition{TItem}"/> class.
/// </summary>
/// <param name="json">The JSON string.</param>
public JsonArrayFilterDefinition(string json)
{
_json = Ensure.IsNotNull(json, nameof(json));
_document = BsonDocument.Parse(json);
}
// public properties
/// <summary>
/// Gets the document.
/// </summary>
/// <value>
/// The document.
/// </value>
public BsonDocument Document => _document;
/// <summary>
/// Gets the JSON string.
/// </summary>
/// <value>
/// The JSON string.
/// </value>
public string Json => _json;
// public methods
/// <inheritdoc />
public override BsonDocument Render(IBsonSerializer itemSerializer, IBsonSerializerRegistry serializerRegistry, LinqProvider linqProvider)
{
return Render((IBsonSerializer<TItem>)itemSerializer, serializerRegistry, linqProvider);
}
/// <inheritdoc />
public override BsonDocument Render(IBsonSerializer<TItem> itemSerializer, IBsonSerializerRegistry serializerRegistry, LinqProvider linqProvider)
{
return _document;
}
}
}