public static Expression Build(QueryLinguist linguist, QueryPolicy policy, Expression expression, Expression provider)
{
ParameterExpression executor = Expression.Parameter(typeof(QueryExecutor), "executor");
var builder = new ExecutionBuilder(linguist, policy, executor);
builder.variables.Add(executor);
builder.initializers.Add(Expression.Call(Expression.Convert(provider, typeof(ICreateExecutor)), "CreateExecutor", null, null));
Expression result = builder.Build(expression);
return(result);
}
public QueryTranslator(QueryLanguage language, QueryMapping mapping, QueryPolicy policy)
{
linguist = language.CreateLinguist(this);
mapper = mapping.CreateMapper(this);
police = policy.CreatePolice(this);
}
private ExecutionBuilder(QueryLinguist linguist, QueryPolicy policy, Expression executor)
{
this.linguist = linguist;
this.policy = policy;
this.executor = executor;
}