public when_registering_a_custom_projection_type()
{
_store = DocumentStore.For(opts =>
{
opts.Connection(ConnectionSource.ConnectionString);
opts.Projections.Add(new MyProjection(), ProjectionLifecycle.Async,
projectionName: "NewProjection", asyncConfiguration:
o =>
{
o.BatchSize = 111;
});
});
_store.Options.Projections.TryFindProjection("NewProjection", out var projection)
.ShouldBeTrue();
theProjection = projection;
}
private Expression GetExpression(IProjectionSource source, ParameterExpression itParameter)
{
switch (source)
{
case StringProjectionSource stringProjectionSource:
return(MemberExpressionBuilder.GetExpression(itParameter, stringProjectionSource.SourceExpression));
case ExpressionProjectionSource expressionProjectionSource:
return(Expressions.ExpressionParameterReplacer.Replace(expressionProjectionSource.SourceExpression, itParameter.Type, itParameter));
case LambdaExpressionProjectionSource lambdaExpressionProjectionSource:
return(Expressions.ExpressionParameterReplacer.Replace(lambdaExpressionProjectionSource.SourceExpression, lambdaExpressionProjectionSource.SourceExpression.Parameters.First(), itParameter));
case ConstantProjectionSource constantProjectionSource:
return(Expression.Constant(constantProjectionSource.Value));
}
throw new InvalidOperationException("Unexpected projection source type");
}
private string GetSourceMemberName(IProjectionSource source)
{
switch (source)
{
case StringProjectionSource stringProjectionSource:
return(stringProjectionSource.SourceExpression);
case ExpressionProjectionSource expressionProjectionSource:
return(expressionProjectionSource.SourceExpression is MemberExpression memberExpression ? memberExpression.Member.Name
: throw new InvalidOperationException("Source expression is not a member expression. Cannot infer name."));
case LambdaExpressionProjectionSource lambdaExpressionProjectionSource:
return(lambdaExpressionProjectionSource.SourceExpression.Body is MemberExpression lambdaMemberExpression ? lambdaMemberExpression.Member.Name
: throw new InvalidOperationException("Source lambda expression is not a member expression. Cannot infer name."));
case ConstantProjectionSource constantProjectionSource:
throw new InvalidOperationException("Cannot infer member name from constant source expression.");
}
throw new InvalidOperationException("Unexpected projection source type");
}
public ShardAgent(DocumentStore store, AsyncProjectionShard projectionShard, ILogger logger, CancellationToken cancellation)
{
if (cancellation == CancellationToken.None)
{
_cancellationSource = new CancellationTokenSource();
_cancellation = _cancellationSource.Token;
}
Name = projectionShard.Name;
ProjectionShardIdentity = projectionShard.Name.Identity;
_store = store;
_projectionShard = projectionShard;
_logger = logger;
_cancellation = cancellation;
_source = projectionShard.Source;
_controller =
new ProjectionController(projectionShard.Name, this, projectionShard.Source.Options);
}
internal bool TryFindProjection(string projectionName, out IProjectionSource source)
{
source = All.FirstOrDefault(x => x.ProjectionName.EqualsIgnoreCase(projectionName));
return(source != null);
}
public AsyncProjectionShard(IProjectionSource source, ISqlFragment[] filters) : this(ShardName.All,
source, filters)
{
}
public AsyncProjectionShard(string shardName, IProjectionSource source, ISqlFragment[] filters)
{
Name = new ShardName(source.ProjectionName, shardName);
EventFilters = filters.Concat(new ISqlFragment[] { IsNotArchivedFilter.Instance }).ToArray();
Source = source;
}
