public static void MapReduce()
{
var databaseName = new DatabaseNamespace(DbConnection.Db.DatabaseNamespace.DatabaseName);
var code = (BsonJavaScript) @"
function () {
var docs = db.Entry.find({isShown: true}, {'publishDate':1});
var length = docs.count();
var merged = { };
for (var i = 0; i < length; i++)
{
var value = docs[i].publishDate;
var date = (new Date(value)).getUTCFullYear().toString() + '/' + ('0' + ((new Date(value)).getUTCMonth() + 1)).slice(-2);
if (date in merged) {
merged[date] += 1;
} else {
merged[date] = 1;
}
}
db.DateSummary.remove({});
db.DateSummary.insert({_id:'dateGrouping', value:merged});
}";
var messageEncodingSettings = new MessageEncoderSettings();
var operation = new EvalOperation(databaseName, code, messageEncodingSettings);
var session = new CoreSessionHandle(NoCoreSession.Instance);
var writeBinding = new WritableServerBinding(DbConnection.Db.Client.Cluster, session);
operation.Execute(writeBinding, CancellationToken.None);
}
public static void MapReduce()
{
var databaseName = new DatabaseNamespace(DbConnection.Db.DatabaseNamespace.DatabaseName);
var code = (BsonJavaScript) @"
function () {
var docs = db.Entry.find({isShown: true}, {'tag':1});
var length = docs.count();
var tags = [];
for (var i = 0; i < length; i++)
{
var doc = docs[i];
tags = tags.concat(doc.tag);
}
var merged = { };
for (var i = 0; i < tags.length; i++)
{
var tag = tags[i].replace('.', '\uff0e');
if (tag in merged) {
merged[tag] += 1;
} else {
merged[tag] = 1;
}
}
db.TagSummary.remove({});
db.TagSummary.insert({_id:'tag', value:merged});
}";
var messageEncodingSettings = new MessageEncoderSettings();
var operation = new EvalOperation(databaseName, code, messageEncodingSettings);
var session = new CoreSessionHandle(NoCoreSession.Instance);
var writeBinding = new WritableServerBinding(DbConnection.Db.Client.Cluster, session);
operation.Execute(writeBinding, CancellationToken.None);
}
public IClientSessionHandle StartImplicitSession(CancellationToken cancellationToken)
{
var options = new ClientSessionOptions();
var coreServerSession = new CoreServerSession();
var coreSession = new CoreSession(coreServerSession, options.ToCore(isImplicit: true));
var coreSessionHandle = new CoreSessionHandle(coreSession);
return(new ClientSessionHandle(_client, options, coreSessionHandle));
}
// private methods
private IClientSessionHandle CreateClientSession()
{
var client = new Mock <IMongoClient>().Object;
var options = new ClientSessionOptions();
var coreServerSession = new CoreServerSession();
var coreSession = new CoreSession(coreServerSession, options.ToCore());
var coreSessionHandle = new CoreSessionHandle(coreSession);
return(new ClientSessionHandle(client, options, coreSessionHandle));
}
/// <summary>
/// Evaluates the specified javascript within a MongoDb database.
/// </summary>
/// <param name="database">MongoDb Database to execute the javascript.</param>
/// <param name="javascript">Javascript to execute.</param>
/// <param name="args">Optional arguments that can be provided to the javascript function to execute.</param>
/// <returns>A <see cref="BsonValue" /> result.</returns>
public static BsonValue Eval(this IMongoDatabase database, string javascript, IEnumerable <BsonValue> args = null)
{
var op = GetEvalOperation(database, javascript, args);
using (var sessionHandle = new CoreSessionHandle(NoCoreSession.Instance))
{
using (var writeBinding = new WritableServerBinding(database.Client.Cluster, sessionHandle))
{
return(op.Execute(writeBinding, CancellationToken.None));
}
}
}
public IClientSessionHandle StartImplicitSession(CancellationToken cancellationToken)
{
var cluster = Mock.Of <ICluster>();
var options = new ClientSessionOptions();
var coreServerSession = new CoreServerSession();
#pragma warning disable CS0618 // Type or member is obsolete
var coreSession = new CoreSession(cluster, coreServerSession, options.ToCore(isImplicit: true));
#pragma warning restore CS0618 // Type or member is obsolete
var coreSessionHandle = new CoreSessionHandle(coreSession);
return(new ClientSessionHandle(_client, options, coreSessionHandle));
}
// private methods
private IClientSessionHandle CreateClientSession()
{
var client = new Mock <IMongoClient>().Object;
var options = new ClientSessionOptions();
var cluster = Mock.Of <ICluster>();
var coreServerSession = new CoreServerSession();
#pragma warning disable CS0618 // Type or member is obsolete
var coreSession = new CoreSession(cluster, coreServerSession, options.ToCore());
#pragma warning restore CS0618 // Type or member is obsolete
var coreSessionHandle = new CoreSessionHandle(coreSession);
return(new ClientSessionHandle(client, options, coreSessionHandle));
}
// private methods
private IClientSessionHandle CreateSession(bool usingSession)
{
if (usingSession)
{
var client = new Mock <IMongoClient>().Object;
var cluster = Mock.Of <ICluster>();
var options = new ClientSessionOptions();
var coreServerSession = new CoreServerSession();
var coreSession = new CoreSession(cluster, coreServerSession, options.ToCore());
var coreSessionHandle = new CoreSessionHandle(coreSession);
return(new ClientSessionHandle(client, options, coreSessionHandle));
}
else
{
return(null);
}
}
// private methods
private IClientSessionHandle CreateSession(bool usingSession)
{
if (usingSession)
{
var client = Mock.Of <IMongoClient>();
var options = new ClientSessionOptions();
var coreSession = Mock.Of <ICoreSession>();
var coreServerSession = Mock.Of <ICoreServerSession>();
Mock.Get(coreSession).SetupGet(m => m.ServerSession).Returns(coreServerSession);
var coreSessionHandle = new CoreSessionHandle(coreSession);
return(new ClientSessionHandle(client, options, coreSessionHandle));
}
else
{
return(null);
}
}
public void Fork_should_return_expected_result()
{
var coreServerSession = new CoreServerSession();
var options = new ClientSessionOptions();
var coreSession = new CoreSession(coreServerSession, options.ToCore());
var coreSessionHandle = new CoreSessionHandle(coreSession);
var subject = CreateSubject(coreSession: coreSessionHandle);
coreSessionHandle.ReferenceCount().Should().Be(1);
var result = subject.Fork();
result.Client.Should().BeSameAs(subject.Client);
result.Options.Should().BeSameAs(subject.Options);
result.WrappedCoreSession.Should().NotBeSameAs(subject.WrappedCoreSession);
var coreSessionHandle1 = (CoreSessionHandle)subject.WrappedCoreSession;
var coreSessionHandle2 = (CoreSessionHandle)result.WrappedCoreSession;
coreSessionHandle2.Wrapped.Should().BeSameAs(coreSessionHandle1.Wrapped);
coreSessionHandle.ReferenceCount().Should().Be(2);
}
public void Fork_should_return_expected_result()
{
var cluster = Mock.Of <ICluster>();
var coreServerSession = new CoreServerSession();
var options = new ClientSessionOptions();
#pragma warning disable CS0618 // Type or member is obsolete
var coreSession = new CoreSession(cluster, coreServerSession, options.ToCore());
#pragma warning restore CS0618 // Type or member is obsolete
var coreSessionHandle = new CoreSessionHandle(coreSession);
var subject = CreateSubject(coreSession: coreSessionHandle);
coreSessionHandle.ReferenceCount().Should().Be(1);
var result = subject.Fork();
result.Client.Should().BeSameAs(subject.Client);
result.Options.Should().BeSameAs(subject.Options);
result.WrappedCoreSession.Should().NotBeSameAs(subject.WrappedCoreSession);
var coreSessionHandle1 = (CoreSessionHandle)subject.WrappedCoreSession;
var coreSessionHandle2 = (CoreSessionHandle)result.WrappedCoreSession;
coreSessionHandle2.Wrapped.Should().BeSameAs(coreSessionHandle1.Wrapped);
coreSessionHandle.ReferenceCount().Should().Be(2);
}
private static ReferenceCountedCoreSession _wrapped(this CoreSessionHandle obj)
{
var fieldInfo = typeof(CoreSessionHandle).GetField("_wrapped", BindingFlags.NonPublic | BindingFlags.Instance);
return((ReferenceCountedCoreSession)fieldInfo.GetValue(obj));
}
