Updated 25/02/2012 - it was highlighted that some of the seach phrases used towards the end of this article were not returning the expected results - that was down to me making assumptions about which words would be stemmed - these examples have been updated. This tutorial will take you through an end-to-end …

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If you create a new MVC application and try to go down the Code First with SQL Server Compact route, you might encounter this error when you first start the application: The path is not valid. Check the directory for the database.**[ Path = …\WebSample\App_Data\YourDatabase.sdf ] This error might be a surprise because …

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The XmlWordSplitter is a new word splitter class in the latest release of LIFTI. I created it mainly because it was required for the persisted index sample, but it seemed too useful to keep out of the core framework. At a very high level the XmlWordSplitter just enumerates words contained within elements in a piece of …

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This post relates to the breaking changes between version 0.4 and 0.5 of LIFTI. LIFTI is a full-text indexing library for .NET - find out more on its CodePlex site. The latest release of LIFTI has several breaking changes that will affect you, so I wanted to take some time to explain not only what they are, but why I …

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I’ve encountered the unhelpful “The agent process was stopped while the test was running” MSTest error result a couple of times recently, and I thought that I’d share a few of my findings and approaches to debugging the unit tests that cause them. The MSTest “Error” Result In my experience, the Error result usually …

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I use Windows Live Writer to put together all my blog posts, but I also use multiple computers. I’ll sometimes find myself writing a draft post on one computer and wanting to carry on editing it on another. Live Writer stores draft posts in Documents\My Weblog Posts\Drafts, and in the past I’ve just manually copied …

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This post will break down how the data in a LIFTI persisted full text index is structured on disk. It might be a bit dry for some, so I’ve tried to spice it up as much as possible with pretty pictures! Birds-eye view The file is broken up into two areas, headers and page data. Each data page is is 8Kb in length and …

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The title pretty much sums up my feelings on the subject, but it probably needs a bit of context. I’ve been doing some work for a client that relies on a 3rd party application framework (No, I’m not going to name and shame the framework!). The application is split across multiple servers and we’ve been upgrading some …

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Over a month ago I started to write a persisted file store for LIFTI. Given that I’d pretty much just finished implementing binary serialization for indexes, why would I want to do that? Serialization vs. persistence I wrote the serialization classes because I knew that it wasn’t always going to be appropriate to …

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I was creating an AppPool using the Microsoft.Web.Administration assembly today and kept running into this in the Application event log: The worker process failed to initialize correctly and therefore could not be started. The data is the error. The only “helpful” code that was provided in the event data was 57000780. …

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