internal DryadQueryNode Visit(QueryNodeInfo nodeInfo)
{
Expression expression = nodeInfo.queryExpression;
if (expression.NodeType == ExpressionType.Call)
{
MethodCallExpression mcExpr = (MethodCallExpression)expression;
if (mcExpr.Method.IsStatic && TypeSystem.IsQueryOperatorCall(mcExpr))
{
return this.VisitQueryOperatorCall(nodeInfo);
}
throw DryadLinqException.Create(HpcLinqErrorCode.OperatorNotSupported,
String.Format(SR.OperatorNotSupported, mcExpr.Method.Name),
expression);
}
else if (expression.NodeType == ExpressionType.Constant)
{
DryadInputNode inputNode = new DryadInputNode(this, (ConstantExpression)expression);
if (!this.m_inputUriMap.ContainsKey(inputNode.Table.DataSourceUri.ToLower()))
{
this.m_inputUriMap.Add(inputNode.Table.DataSourceUri.ToLower(), inputNode);
}
return inputNode;
}
else
{
string errMsg = "Can't handle expression of type " + expression.NodeType;
throw DryadLinqException.Create(HpcLinqErrorCode.UnsupportedExpressionsType,
String.Format(SR.UnsupportedExpressionsType,expression.NodeType),
expression);
}
}
internal virtual string Visit(DryadInputNode node,
CodeMemberMethod vertexMethod,
string[] readerNames,
string[] writerNames)
{
return node.AddVertexCode(vertexMethod, readerNames, writerNames);
}
