protected Tuple <List <Expression>, ParameterExpression, ParameterExpression> GetMapExpressions(Type src, Type dest)
{
var cacheKey = MappingServiceProvider.CalculateCacheKey(src, dest);
if (TypeMappers.ContainsKey(cacheKey))
{
return(TypeMappers[cacheKey].GetMapExpressions());
}
throw new MapNotImplementedException(string.Format("There is no mapping has bee found. Source Type: {0}, Destination Type: {1}", src.FullName, dest.FullName));
}
protected BlockExpression GetCustomMapExpression(Type src, Type dest)
{
var cacheKey = MappingServiceProvider.CalculateCacheKey(src, dest);
if (!MappingServiceProvider.CustomMappers.ContainsKey(cacheKey))
{
return(null);
}
CompileGenericCustomTypeMapper(src, dest, MappingServiceProvider.CustomMappers[cacheKey](), cacheKey);
return(CustomTypeMapperExpCache[cacheKey]);
}
public override void PrecompileCollection <T, TN>()
{
var cacheKey = MappingServiceProvider.CalculateCacheKey(typeof(T), typeof(TN));
if (CollectionMappers.ContainsKey(cacheKey))
{
return;
}
var sourceParameterExp = Expression.Parameter(typeof(T), "sourceColl");
var blockExp = CompileCollectionInternal <T, TN>(sourceParameterExp);
var lambda = Expression.Lambda <Func <T, TN> >(blockExp, sourceParameterExp);
var compiledFunc = lambda.Compile();
CollectionMappers[cacheKey] = compiledFunc;
}
public Expression GetMemberQueryableExpression(Type srcType, Type dstType)
{
var cacheKey = MappingServiceProvider.CalculateCacheKey(srcType, dstType);
if (!TypeMappers.ContainsKey(cacheKey))
{
return(null);
}
var typeMapper = TypeMappers[cacheKey];
if (typeMapper.QueryableGeneralExpression == null)
{
typeMapper.Compile(CompilationTypes.Source);
}
return(typeMapper.QueryableGeneralExpression);
}
public override void PrecompileCollection <T, TN>()
{
var cacheKey = MappingServiceProvider.CalculateCacheKey(typeof(T), typeof(TN));
if (CollectionMappers.ContainsKey(cacheKey))
{
return;
}
var sourceType = GetCollectionElementType(typeof(T));
var destType = GetCollectionElementType(typeof(TN));
var sourceVariable = Expression.Parameter(typeof(T), "source");
var destVariable = Expression.Parameter(typeof(TN), "dst");
var srcCount = Expression.Call(typeof(Enumerable), "Count", new[] { sourceType }, sourceVariable);
var destCount = Expression.Call(typeof(Enumerable), "Count", new[] { destType }, destVariable);
var conditionToCreateList = Expression.NotEqual(srcCount, destCount);
var notNullCondition = Expression.IfThenElse(conditionToCreateList,
MapCollectionNotCountEquals(typeof(T), typeof(TN), sourceVariable, destVariable),
MapCollectionCountEquals(typeof(T), typeof(TN), sourceVariable, destVariable));
var newCollBlockExp = CompileCollectionInternal <T, TN>(sourceVariable, destVariable);
var result = Expression.IfThenElse(Expression.NotEqual(destVariable, StaticExpressions.NullConstant),
notNullCondition,
newCollBlockExp);
var expressions = new List <Expression> {
result
};
var resultExpression = Expression.Block(new ParameterExpression[] {}, expressions);
var checkSrcForNullExp =
Expression.IfThenElse(Expression.Equal(sourceVariable, StaticExpressions.NullConstant),
Expression.Default(destVariable.Type), resultExpression);
var block = Expression.Block(new ParameterExpression[] {}, checkSrcForNullExp, destVariable);
var lambda = Expression.Lambda <Func <T, TN, TN> >(block, sourceVariable, destVariable);
var compiledFunc = lambda.Compile();
CollectionMappers[cacheKey] = compiledFunc;
}
protected Tuple <List <Expression>, ParameterExpression, ParameterExpression> GetMapExpressions(Type src, Type dest)
{
var cacheKey = MappingServiceProvider.CalculateCacheKey(src, dest);
if (TypeMappers.ContainsKey(cacheKey))
{
return(TypeMappers[cacheKey].GetMapExpressions());
}
dynamic srcInst = Activator.CreateInstance(src);
dynamic destInst = Activator.CreateInstance(dest);
RegisterDynamic(srcInst, destInst);
if (TypeMappers.ContainsKey(cacheKey))
{
return(TypeMappers[cacheKey].GetMapExpressions());
}
throw new MapNotImplementedException(
$"There is no mapping has been found. Source Type: {src.FullName}, Destination Type: {dest.FullName}");
}
private void RegisterDynamic <T, TN>(T src, TN dest)
{
MappingServiceProvider.Register <T, TN>();
}