private static string GetPath(ClassMappingDescriptor descriptor, MemberMappingDescriptor member)
{
// todo: optimize - don't do this for every member, this is also done in AggregateFunctionContext ctor
IList <AggregateExpressionPathItem> pathItems = ExpressionParser.BuildAggregatePathItem(descriptor, member);
bool isLastItemCollection = pathItems[pathItems.Count - 1].IsCollection;
string path = member.Expression;
int pos = path.IndexOf(':');
if (pos >= 0)
{
path = path.Substring(pos + 1);
}
if (!isLastItemCollection)
{
pos = path.LastIndexOf('/');
if (pos >= 0)
{
path = path.Substring(0, pos);
}
}
return(path);
}
private IEnumerable <CodeStatement> GetPathTraversalStatements()
{
string exp = "";
IList <AggregateExpressionPathItem> pathItems
= ExpressionParser.BuildAggregatePathItem(m_contexts[0].Descriptor, m_contexts[0].Member);
foreach (AggregateExpressionPathItem pathItem in pathItems)
{
if (pathItem.IsCollection)
{
exp += string.Format("foreach({0} {1} in {2}.{3})",
TypeHelper.GetTypeDefinition(pathItem.Type),
pathItem.Object,
pathItem.Target,
pathItem.Expression);
}
}
exp += Environment.NewLine + "\t\t\t\t{" + Environment.NewLine;
foreach (AggregateFunctionContext context in m_contexts)
{
IEnumerable <string> itemExpressions = context.Generator.GetIterationStatements(context, context.PathItems);
foreach (string itemExpression in itemExpressions)
{
exp += "\t\t\t\t\t";
exp += itemExpression;
if (!exp.EndsWith(";"))
{
exp += ";";
}
exp += Environment.NewLine; // todo: smarter way
}
}
exp += "\t\t\t\t}";
CodeConditionStatement ifStatement = new CodeConditionStatement(
new CodeSnippetExpression(pathItems[0].Target + "." + pathItems[0].Expression + " != null"),
new CodeStatement[] { new CodeExpressionStatement(new CodeSnippetExpression(exp)) },
new CodeStatement[0]);
CodeStatementCollection statements = new CodeStatementCollection();
statements.Add(ifStatement);
CodeStatement[] arr = new CodeStatement[statements.Count];
statements.CopyTo(arr, 0);
return(arr);
}
public AggregateFunctionContext(MemberMappingDescriptor member,
ClassMappingDescriptor descriptor,
Type implementationType,
string functionObjectName,
IAggregateFunctionCodeGenerator generator)
{
m_member = member;
m_generator = generator;
m_functionObjectName = functionObjectName;
m_implementationType = implementationType;
m_descriptor = descriptor;
m_pathItems = ExpressionParser.BuildAggregatePathItem(descriptor, member);
m_sourceItem = m_pathItems[m_pathItems.Count - 1];
}
