public void SimpleSelect()
{
var msgs = new FudgeMsg[] { CreateTickMsg(10.3, 11.1, "FOO"), CreateTickMsg(2.4, 3.1, "BAR") };
var query = from tick in msgs.AsQueryable <Tick>() select tick.Ticker;
string[] tickers = query.ToArray();
Assert.Equal(new string[] { "FOO", "BAR" }, tickers);
}
public void SelectWithExpression()
{
var msgs = new FudgeMsg[] { CreateTickMsg(10.3, 11.1, "FOO"), CreateTickMsg(2.4, 3.1, "BAR") };
var query = from tick in msgs.AsQueryable <Tick>()
select tick.Bid * 2;
double[] vals = query.ToArray();
Assert.Equal(new double[] { 20.6, 4.8 }, vals);
}
public void OrderBy()
{
var msgs = new FudgeMsg[] { CreateTickMsg(10.3, 11.1, "FOO"), CreateTickMsg(2.4, 3.1, "BAR"), CreateTickMsg(5.2, 5.5, "ZIP") };
var query = from tick in msgs.AsQueryable <Tick>()
orderby tick.Ask
select tick.Ticker;
string[] tickers = query.ToArray();
Assert.Equal(new string[] { "BAR", "ZIP", "FOO" }, tickers);
// And descending
query = from tick in msgs.AsQueryable <Tick>()
orderby tick.Bid descending
select tick.Ticker;
tickers = query.ToArray();
Assert.Equal(new string[] { "FOO", "ZIP", "BAR" }, tickers);
}
public void WhereFilter()
{
var msgs = new FudgeMsg[] { CreateTickMsg(10.3, 11.1, "FOO"), CreateTickMsg(2.4, 3.1, "BAR") };
var query = from tick in msgs.AsQueryable <Tick>()
where tick.Bid < 5.0
select tick.Ticker;
string[] tickers = query.ToArray();
Assert.Equal(new string[] { "BAR" }, tickers);
}
public void BindingParams()
{
// Make sure we can handle constants that are coming in from outside the query
var msgs = new FudgeMsg[] { CreateTickMsg(10.3, 11.1, "FOO"), CreateTickMsg(2.4, 3.1, "BAR"), CreateTickMsg(5.2, 5.5, "ZIP") };
double bid = 2.4;
var query = from tick in msgs.AsQueryable<Tick>()
where tick.Bid == bid // bid here comes from outside the query
select tick.Ticker;
var tickers = query.ToArray();
Assert.Equal(new string[] { "BAR" }, tickers);
}
public void FudgeMsgVsIFudgeFieldContainer()
{
// Make sure that we can work with enumerables of IFudgeFieldContainer, enumerables of IFudgeMsg and also arrays directly
var array = new FudgeMsg[] { CreateTickMsg(10.3, 11.1, "FOO"), CreateTickMsg(2.4, 3.1, "BAR") };
IEnumerable<IFudgeFieldContainer> containerList = array;
IEnumerable<FudgeMsg> msgList = array;
var query1 = from tick in containerList.AsQueryable<Tick>() select tick.Ticker;
var query2 = from tick in msgList.AsQueryable<Tick>() select tick.Ticker;
var query3 = from tick in array.AsQueryable<Tick>() select tick.Ticker;
Assert.Equal(query1, query2);
Assert.Equal(query1, query3);
}
public void FudgeMsgVsIFudgeFieldContainer()
{
// Make sure that we can work with enumerables of IFudgeFieldContainer, enumerables of IFudgeMsg and also arrays directly
var array = new FudgeMsg[] { CreateTickMsg(10.3, 11.1, "FOO"), CreateTickMsg(2.4, 3.1, "BAR") };
IEnumerable <IFudgeFieldContainer> containerList = array;
IEnumerable <FudgeMsg> msgList = array;
var query1 = from tick in containerList.AsQueryable <Tick>() select tick.Ticker;
var query2 = from tick in msgList.AsQueryable <Tick>() select tick.Ticker;
var query3 = from tick in array.AsQueryable <Tick>() select tick.Ticker;
Assert.Equal(query1, query2);
Assert.Equal(query1, query3);
}
public void BindingParams()
{
// Make sure we can handle constants that are coming in from outside the query
var msgs = new FudgeMsg[] { CreateTickMsg(10.3, 11.1, "FOO"), CreateTickMsg(2.4, 3.1, "BAR"), CreateTickMsg(5.2, 5.5, "ZIP") };
double bid = 2.4;
var query = from tick in msgs.AsQueryable <Tick>()
where tick.Bid == bid // bid here comes from outside the query
select tick.Ticker;
var tickers = query.ToArray();
Assert.Equal(new string[] { "BAR" }, tickers);
}
public void ComplexSelect()
{
// This code is used in the Fudge.Linq namespace doc example.
var msgs = new FudgeMsg[] { CreateTickMsg(10.3, 11.1, "FOO"), CreateTickMsg(2.4, 3.1, "BAR") };
var query = from tick in msgs.AsQueryable<Tick>()
where tick.Ask > 4.0
select new { tick.Ticker, tick.Ask };
var results = query.ToArray();
Assert.Equal(1, results.Length);
Assert.Equal("FOO", results[0].Ticker);
Assert.Equal(11.1, results[0].Ask);
}
public void ComplexSelect()
{
// This code is used in the Fudge.Linq namespace doc example.
var msgs = new FudgeMsg[] { CreateTickMsg(10.3, 11.1, "FOO"), CreateTickMsg(2.4, 3.1, "BAR") };
var query = from tick in msgs.AsQueryable <Tick>()
where tick.Ask > 4.0
select new { tick.Ticker, tick.Ask };
var results = query.ToArray();
Assert.Equal(1, results.Length);
Assert.Equal("FOO", results[0].Ticker);
Assert.Equal(11.1, results[0].Ask);
}
public void XmlExample()
{
var msgs = new FudgeMsg[] { CreateTickMsg(10.3, 11.1, "FOO"), CreateTickMsg(2.4, 3.1, "BAR") };
XElement tree = new XElement("Ticks", from tick in msgs.AsQueryable <Tick>()
select new XElement("Tick",
new XElement("Ticker", tick.Ticker),
new XElement("Bid", tick.Bid),
new XElement("Ask", tick.Ask)));
string s = tree.ToString();
//<Ticks>
// <Tick>
// <Ticker>FOO</Ticker>
// <Bid>10.3</Bid>
// <Ask>11.1</Ask>
// </Tick>
// <Tick>
// <Ticker>BAR</Ticker>
// <Bid>2.4</Bid>
// <Ask>3.1</Ask>
// </Tick>
//</Ticks>
}
public void OrderBy()
{
var msgs = new FudgeMsg[] { CreateTickMsg(10.3, 11.1, "FOO"), CreateTickMsg(2.4, 3.1, "BAR"), CreateTickMsg(5.2, 5.5, "ZIP") };
var query = from tick in msgs.AsQueryable<Tick>()
orderby tick.Ask
select tick.Ticker;
string[] tickers = query.ToArray();
Assert.Equal(new string[] { "BAR", "ZIP", "FOO" }, tickers);
// And descending
query = from tick in msgs.AsQueryable<Tick>()
orderby tick.Bid descending
select tick.Ticker;
tickers = query.ToArray();
Assert.Equal(new string[] { "FOO", "ZIP", "BAR" }, tickers);
}
public void XmlExample()
{
var msgs = new FudgeMsg[] { CreateTickMsg(10.3, 11.1, "FOO"), CreateTickMsg(2.4, 3.1, "BAR") };
XElement tree = new XElement("Ticks", from tick in msgs.AsQueryable<Tick>()
select new XElement("Tick",
new XElement("Ticker", tick.Ticker),
new XElement("Bid", tick.Bid),
new XElement("Ask", tick.Ask)));
string s = tree.ToString();
//<Ticks>
// <Tick>
// <Ticker>FOO</Ticker>
// <Bid>10.3</Bid>
// <Ask>11.1</Ask>
// </Tick>
// <Tick>
// <Ticker>BAR</Ticker>
// <Bid>2.4</Bid>
// <Ask>3.1</Ask>
// </Tick>
//</Ticks>
}
public void WhereFilter()
{
var msgs = new FudgeMsg[] { CreateTickMsg(10.3, 11.1, "FOO"), CreateTickMsg(2.4, 3.1, "BAR") };
var query = from tick in msgs.AsQueryable<Tick>()
where tick.Bid < 5.0
select tick.Ticker;
string[] tickers = query.ToArray();
Assert.Equal(new string[] { "BAR" }, tickers);
}
public void SimpleSelect()
{
var msgs = new FudgeMsg[] { CreateTickMsg(10.3, 11.1, "FOO"), CreateTickMsg(2.4, 3.1, "BAR") };
var query = from tick in msgs.AsQueryable<Tick>() select tick.Ticker;
string[] tickers = query.ToArray();
Assert.Equal(new string[] {"FOO", "BAR"}, tickers);
}
public void SelectWithExpression()
{
var msgs = new FudgeMsg[] { CreateTickMsg(10.3, 11.1, "FOO"), CreateTickMsg(2.4, 3.1, "BAR") };
var query = from tick in msgs.AsQueryable<Tick>()
select tick.Bid * 2;
double[] vals = query.ToArray();
Assert.Equal(new double[] { 20.6, 4.8 }, vals);
}
