Create your own search provider

public abstract class SearchProvider : ProviderBase
        {
            /// <summary>
            /// Gets the class type of the query builder. This class will be used to dynamically convert SearchCriteria to the query
            /// that Search Provider can understand.
            /// </summary>
            /// <example>
            /// // the following type will build query for the SOLR server
            /// "Mediachase.Search.Providers.Solr.SolrSearchQueryBuilder, Mediachase.Search.SolrSearchProvider"
            /// </example>
            /// <value>The type of the query builder.</value>
            public abstract string QueryBuilderType { get; }
    
            /// <summary>
            /// Searches the datasource using the specified criteria. Criteria is parsed by the query builder specified by <typeparamref name="QueryBuilderType"/>.
            /// </summary>
            /// <param name="applicationName">Name of the application.</param>
            /// <param name="criteria">The criteria.</param>
            /// <returns></returns>
            public abstract ISearchResults Search(string applicationName, ISearchCriteria criteria);
    
            /// <summary>
            /// Adds the document to the index. Depending on the provider, the document will be commited only after commit is called.
            /// </summary>
            /// <param name="applicationName">Name of the application.</param>
            /// <param name="scope">The scope.</param>
            /// <param name="document">The document.</param>
            public abstract void Index(string applicationName, string scope, ISearchDocument document);
    
             /// <summary>
             /// Removes the document by specifying scope (core in SOLR), key (a field that can be used to lookup for a document) and
             /// value of the key.
             /// </summary>
             /// <param name="applicationName">Name of the application.</param>
             /// <param name="scope">The scope.</param>
             /// <param name="key">The key.</param>
             /// <param name="value">The value.</param>
             /// <returns></returns>
             public abstract int Remove(string applicationName, string scope, string key, string value);
    
             /// <summary>
             /// Removes all documents in the specified scope.
             /// </summary>
             /// <param name="applicationName">Name of the application.</param>
             /// <param name="scope">The scope.</param>
             public abstract void RemoveAll(string applicationName, string scope);
    
             /// <summary>
             /// Closes the specified provider.
             /// </summary>
             /// <param name="applicationName">Name of the application.</param>
             /// <param name="scope">The scope.</param>
             public abstract void Close(string applicationName, string scope);
    
             /// <summary>
             /// Commits changes made to this instance.
             /// </summary>
             /// <param name="applicationName">Name of the application.</param>
             public abstract void Commit(string applicationName);
        }