[ http://issues.apache.org/jira/browse/IBATISNET-100?page=all ]
Ron Grabowski resolved IBATISNET-100:
-------------------------------------
Resolution: Fixed
> Delay calling cacheModel.RegisterTriggerStatement until all statements have
> been initialized
> --------------------------------------------------------------------------------------------
>
> Key: IBATISNET-100
> URL: http://issues.apache.org/jira/browse/IBATISNET-100
> Project: iBatis for .NET
> Type: Improvement
> Components: DataMapper
> Reporter: Ron Grabowski
> Assignee: Ron Grabowski
> Priority: Minor
> Attachments: DomSqlMapBuilder.patch
>
> I've extracted all of my cacheModel and resultMap nodes to a seperate xml
> files:
> /SqlMaps/CacheModels.xml
> /SqlMaps/ResultMaps.xml
> /SqlMaps/OleDb/...
> /SqlMaps/MySQL/...
> /SqlMaps/SqlServer/...
> to avoid duplicating nodes in database specific files. The database specific
> files are a lot cleaner becuase they only contain <statement> nodes.
> The current implementation of ConfigureSqlMap() in DomSqlMapBuilder.cs calls
> RegisterTriggerStatement when the cacheModel node is processed. When the
> cacheModel nodes are in a seperate file, its not possible to register a
> trigger statement becuase the xml files that contain those statements haven't
> been processed yet. Delaying the registration of cacheModel to just before
> the cacheModel is attached to the mapped statement makes it possible to
> declare the cacheModel nodes without requiring the statements exist yet.
> One of the benefits to being able to keep a seperate file of cacheModel nodes
> is that you could mark normal sqlMap file as embedded resources while keeping
> the CacheModel.xml file as a resource on the file system. The CacheModels.xml
> file can be tweaked without having to recompile the application.
> To accomplish this, 4 changes need to occur:
> 1)
> Change the SqlMap.xsd file to not require a <statements> node. This allows a
> <sqlMap> node to contain just a <cacheModels> and/or just a <resultMaps> node.
> 2)
> Add a property in ConfigurationScope.cs to keep track of what statements
> belong to a cacheModel:
> public HybridDictionary CacheModelFlushOnExecuteStatements
> {
> get { return _cacheModelFlushOnExecuteStatements; }
> set { _cacheModelFlushOnExecuteStatements = value; }
> }
> I wonder if there is a cleaner way of doing this ???
> 3)
> Replace this code in DomSqlMapBuilder.cs:
> IMappedStatement mappedStatement =
> _configScope.SqlMapper.GetMappedStatement(statementName);
> cacheModel.RegisterTriggerStatement(mappedStatement);
> with:
> IList statementNames =
> (IList)_configScope.CacheModelFlushOnExecuteStatements[cacheModel.Id];
> if (statementNames == null)
> {
> statementNames = new ArrayList();
> }
> statementNames.Add(statementName);
> _configScope.CacheModelFlushOnExecuteStatements[cacheModel.Id] =
> statementNames;
> 4)
> Change this line in DomSqlMapBuilder.cs:
> mappedStatement.Statement.CacheModel =
> _configScope.SqlMapper.GetCache(mappedStatement.Statement.CacheModelName);
> to:
> CacheModel cacheModel =
> _configScope.SqlMapper.GetCache(mappedStatement.Statement.CacheModelName);
> IList statementsToRegister =
> (IList)_configScope.CacheModelFlushOnExecuteStatements[cacheModel.Id];
> if (statementsToRegister != null)
> {
> if (statementsToRegister.Contains(mappedStatement.Name))
> {
> cacheModel.RegisterTriggerStatement(mappedStatement);
> }
> else
> {
> // TODO: alert user
> }
> }
> mappedStatement.Statement.CacheModel = cacheModel;
> Do other people think this would be useful? It would certinally make files
> that contain <statement> nodes a lot cleaner and eliminate to duplication of
> <cacheModels> and <resultMaps> node across files.
> - Ron
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