/// <exception cref="System.SqlSyntaxErrorException" />
public static void InitRouteRule(ISchemaLoader loader)
{
var functions = loader.Functions;
var functionManager = new MySqlFunctionManager(true);
BuildFuncManager(functionManager, functions);
foreach (var conf in loader.RuleConfigList)
{
var algorithmString = conf.Algorithm;
var lexer = new MySqlLexer(algorithmString);
var parser = new MySqlExprParser(lexer, functionManager, false, MySqlParser.DefaultCharset);
var expression = parser.Expression();
if (lexer.Token() != MySqlToken.Eof)
{
throw new ConfigException("route algorithm not end with EOF: " + algorithmString);
}
IRuleAlgorithm algorithm;
if (expression is IRuleAlgorithm)
{
algorithm = (IRuleAlgorithm)expression;
}
else
{
algorithm = new ExpressionAdapter(expression);
}
conf.RuleAlgorithm = algorithm;
}
}
private static void BuildFuncManager(MySqlFunctionManager functionManager,
IDictionary <string, IRuleAlgorithm> functions)
{
var extFuncPrototypeMap = new Dictionary <string, FunctionExpression>(functions.Count);
foreach (var en in functions)
{
extFuncPrototypeMap[en.Key] = (FunctionExpression)en.Value;
}
functionManager.AddExtendFunction(extFuncPrototypeMap);
}
public MySqlExprParser(MySqlLexer lexer, MySqlFunctionManager functionManager, bool cacheEvalRst, string charset)
: base(lexer, cacheEvalRst)
{
this.functionManager = functionManager;
this.charset = charset ?? DefaultCharset;
}
