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The dotnet command line tool is not supported when building for.NET Core. Please use Visual Studio or the msbuild command line tool to build your project.
Important note for PCL users: this works via the. You must install the Realm NuGet package into every PCL that uses Realm as well as each of your platform-specific projects, i.e., your final app for iOS and Android. If you are using shared projects, you only have to install the NuGet into each platform-specific project. Installation You install Realm via, or you can browse the source code on. On the “Packages” node under your project in the Solution pane, click the gear button and select “Add Packages”. Type “Realm” in the search box.
Select Realm and add it. You should see Fody added as a dependency in turn. The Realm package contains everything you need to use Realm.
It depends on weaver, responsible for turning your RealmObject subclasses into persisted ones. At this point, you should have the package installed.
If your project was already using Fody you will see an update to your existing FodyWeavers.xml. The important thing is that you end up with a FodyWeavers.xml file that contains all the weavers you want active, including RealmWeaver. This is an example of how your FodyWeavers.xml file should look if you were not already using any other weavers when you added Realm. In your project, choose Tools - NuGet Package Manager - Manage Packages for Solution. Select the Realm package in the list of available packages.
Check that your project is checked on the right hand side, so the Install button is enabled. Press Install. Press OK in the dialog that comes up, which should be telling you it will install Realm and Fody The Realm package contains everything you need to use Realm. It depends on weaver, responsible for turning your RealmObject subclasses into persisted ones.
At this point, you should have the package installed. If your project was already using Fody you will see an update to your existing FodyWeavers.xml. The important thing is that you end up with a FodyWeavers.xml file that contains all the weavers you want active, including RealmWeaver. This is an example of how your FodyWeavers.xml file should look if you were not already using any other weavers when you added Realm.
Are you looking to use Realm Mobile Platform to synchronize all of your Realm Databases? Examples You can find a number of examples in our repository in the. Current Limitations Realm is generally trying to have as few constraints as possible and we are continuously adding new features based on feedback from the community.
The StyleCop Visual Studio extension, which allows StyleCop analysis to be run on any file, project, or solution in Visual Studio without modifying the source code. We can test it out by start building the project. After build complete, you should see some warnings show in Errors Pad trigger by StyleCop.
However, Realm still has a few limitations. These have been compiled below.
Please refer to our for a more comprehensive list of known issues. General Limits Realm aims to strike a balance between flexibility and performance. In order to accomplish this goal, realistic limits are imposed on various aspects of storing information in a realm. For example:. Class names must be between 0 and 57 bytes in length.
UTF-8 characters are supported. An exception will be thrown at your app’s initialization if this limit is exceeded. Property names must be between 0 and 63 bytes in length. UTF-8 characters are supported. An exception will be thrown at your app’s initialization if this limit is exceeded. iOS Limitation: The total size of all open Realm files cannot be larger than the amount of memory your application would be allowed to map in iOS — this changes per device, and depends on how fragmented the memory space is at that point in time (there is a radar open about this issue: rdar://17119975).
If you need to store more data, you can split into multiple Realm files, and open and close them as needed. Threads Although Realm files can be accessed by multiple threads concurrently, you cannot hand over Realms, Realm objects, queries, and results between threads.
About Realm’s threading. File size & tracking of intermediate versions You should expect a Realm database to take less space on disk than an equivalent SQLite database. If your Realm file is much larger than you expect, it may be because you have a that is referring to an older version of the data in the database. In order to give you a consistent view of your data, Realm only updates the active version accessed at the start of a run loop iteration. This means that if you read some data from the Realm and then block the thread on a long-running operation while writing to the Realm on other threads, the version is never updated and Realm has to hold on to intermediate versions of the data which you may not actually need, resulting in the file size growing with each write. The extra space will eventually be reused by future writes.
If you prefer to reclaim the space deterministically, refer to. FAQ Is Realm open source?
Realm’s internal C storage engine and the language SDKs over it are entirely open source and licensed under Apache 2.0. Realm also optionally includes a closed-source Realm Platform Extensions component, but that is not required to use Realm as an embedded database. Building Realm in a CI environment The Realm build tasks depend on the $(SolutionDir) property being set by MSBuild. This happens when building via the solution file which is why things work out of the box on Visual Studio. In CI environments (e.g.
VSTS, Jenkins, Appveyor), often you invoke the msbuild command line tool for individual projects which leaves $(SolutionDir) undefined. To fix that, you’ll need to pass /p:SolutionDir=/path/to/solution/folder to the msbuild command invocation. In most CI environments, the solution directory will be the current folder,., but this may not apply to all.
Refer to your automation server’s documentation for more details. I see a network call to Mixpanel when I build my app, what is that? Realm collects anonymous analytics when you run the Realm assembly weaver on your assemblies containing classes. This is completely anonymous and helps us improve the product by flagging which version of Realm you use and what OS you use, and what we can deprecate support for. This call does not run when your app is in production, or running on your user’s devices — only when your assemblies are woven by Fody during build. You can see exactly how & what we collect, as well as the rationale for it in our.
Does Realm work as a Portable (PCL) Library? You need to use the iOS, Android, or Win32 version of Realm with your executable but we offer a PCL that you can use to compile against the Realm API with. This is the in action. If you add Realm to a PCL project via NuGet, and also add it to your executable, it will work. Note that this PCL does not mean you can just use Realm on an arbitrary.NET platform.
Realm relies on a native C core which has to be ported to each platform. Troubleshooting Crash Reporting We encourage you to use a crash reporter in your application. Many Realm operations could potentially fail at runtime (like any other disk IO), so collecting crash reports from your application will help identify areas where either you (or us) can improve error handling and fix crashing bugs.
Most commercial crash reporters have the option of collecting logs. We strongly encourage you to enable this feature. Realm logs metadata information (but no user data) when throwing exceptions and in irrecoverable situations, and these messages can help debug when things go wrong. Reporting Realm Issues If you’ve found an issue with Realm, please either or email us at with as much information as possible for us to understand and reproduce your issue. The following information is very useful to us:.
Goals. Expected results. Actual results. Steps to reproduce. Code sample that highlights the issue (full projects that we can compile ourselves are ideal). Version of Realm, macOS or Windows & Visual Studio. Xcode if targeting iOS, NDK if targeting Android.
Platform, OS version & architecture on which the bug happens (e.g., 64-bit iOS 8.1). Crash logs & stack traces. See above for details. Getting an No properties in class exception You may see a System.InvalidOperationException with the message “No properties in class, has linker stripped it?”. There are two known causes:. You either have no woven RealmObjects, probably because something went wrong with Fody, or.
Your RealmObjects had their properties stripped so appear to Realm to be empty. In the first case, the exception will be thrown.
See for more details. In the second case, the exception will be thrown from. We have had some users run into problems when they have the Linker Behaviour set to Link All and they lack the Preserve(AllMembers = true) attribute on the class declaration. The linker will only preserve members which are referenced explicitly in the code. This means that if you have a property that would be persisted but is not referenced anywhere, it might be removed causing the schema to mismatch that of the database.
By default, Realm builds the schema to describe all of your subclasses in all your assemblies. This happens lazily and so is not triggered until your first call to. It will only do this a maximum of once per run, caching the result in memory. For a given assembly, if you only wish to store some of your classes, you can and use that configuration in.
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That avoids the schema building for all and so will also avoid exceptions. Otherwise, if you have unused classes, add the Preserve attribute. Fody: Am unhandled exception occurred This common build failure can easily be triggered when you have already built a project and just add a new subclass. Choosing Build or Run will not rebuild the project sufficiently to invoke the Fody Weaver. Simply choose Rebuild on your project and it should build without error. Failing to Weave You may see a warning in the build log about classes not having been woven. This indicates that the Fody weaving package is not properly installed.
Firstly, check that the FodyWeavers.xml file contains an entry for RealmWeaver. The installation will copy RealmWeaver.Fody.dll up into a Tools directly in your solution directory (this is usually a sibling to your project directories).
It is not linked into any of the projects but needs to be in that location for Fody to find the DLL. It is also possible that the installation of Fody has failed. This has been experienced with Visual Studio 2015 and versions of NuGet Package Manager prior to version 3.2. To diagnose this, use a text editor to check that your.csproj has a line importing Fody.targets, such as: Simply upgrading to a later version of NuGet Package Manager should fix this problem. If this doesn’t work, there seems to be a problem with Fody and Microsoft.Bcl.Build.targets. Removing the following line from your.csproj file might help: For more details about this, see. Troubleshooting WriteAsync Issues Inside WriteAsync, we check for a non-null to indicate if you might be on the UI thread.
This check may be confused by a well-established pattern of programming used where people also set Current in their worker threads, so they can use the method to run code on the UI thread. This pattern dates back to a. It is not a problem if you have set SynchronisationContext.Current but it will cause WriteAsync to dispatch again on the thread pool, which may create another worker thread. So, if you are using Current in your threads, consider calling just Write instead of WriteAsync. Realm Core Binary Fails to Download When building Realm, part of the process includes downloading the core library as a static binary and integrating it into the Realm project. This is part of the wrappers building by Makefile. It’s been reported that in certain instances, the core binary fails to download with the following error: Downloading core failed.
Please try again once you have an Internet connection. This error can occur due to any of the following reasons:. Your IP address range is from a region that is on the list of. In order to comply with U.S. Law, Realm has not been made available in that region. For more information, please see our. You are located in mainland China, and due to the country-wide firewall you are not able to properly access CloudFlare or Amazon AWS S3 services at the moment.
Please see on one of our other products for more information. Amazon AWS S3 could be experiencing service issues. Please check the and try again later. Getting Help. Need help with your code?.
We actively monitor & answer questions on SO!. Have a bug to report?. If possible, include the version of Realm, as much logging output as possible, the Realm file, and a project that shows the issue. Have a feature request?. Tell us what the feature should do, and why you want the feature.