/// <summary>
/// Given a list of view specifications obtained from by parsing this method instantiates a list of view
/// factories. The view factories are not yet aware of each other after leaving this method (so not yet
/// chained logically). They are simply instantiated and assigned view parameters.
/// </summary>
/// <param name="streamNum">is the stream number</param>
/// <param name="viewSpecList">is the view definition</param>
/// <param name="statementContext">is statement service context and statement info</param>
/// <returns>list of view factories</returns>
/// <throws>ViewProcessingException if the factory cannot be creates such as for invalid view spec</throws>
public static IList <ViewFactory> InstantiateFactories(int streamNum, IList <ViewSpec> viewSpecList, StatementContext statementContext)
{
IList <ViewFactory> factoryChain = new List <ViewFactory>();
int viewNum = 0;
foreach (ViewSpec spec in viewSpecList)
{
// Create the new view factory
var viewFactory = statementContext.ViewResolutionService.Create(spec.ObjectNamespace, spec.ObjectName);
var audit = AuditEnum.VIEW.GetAudit(statementContext.Annotations);
if (audit != null)
{
viewFactory = (ViewFactory)ViewFactoryProxy.NewInstance(statementContext.EngineURI, statementContext.StatementName, viewFactory, spec.ObjectName);
}
factoryChain.Add(viewFactory);
// Set view factory parameters
try
{
ViewFactoryContext context = new ViewFactoryContext(statementContext, streamNum, viewNum, spec.ObjectNamespace, spec.ObjectName);
viewFactory.SetViewParameters(context, spec.ObjectParameters);
}
catch (ViewParameterException e)
{
throw new ViewProcessingException(string.Format("Error in view '{0}{1}{2}', {3}", spec.ObjectNamespace, ':', spec.ObjectName, e.Message), e);
}
viewNum++;
}
return(factoryChain);
}
/// <summary>
/// Given a list of view specifications obtained from by parsing this method instantiates a list of view factories.
/// The view factories are not yet aware of each other after leaving this method (so not yet chained logically).
/// They are simply instantiated and assigned view parameters.
/// </summary>
/// <param name="streamNum">is the stream number</param>
/// <param name="viewSpecList">is the view definition</param>
/// <param name="statementContext">is statement service context and statement INFO</param>
/// <param name="isSubquery">subquery indicator</param>
/// <param name="subqueryNumber">for subqueries</param>
/// <exception cref="ViewProcessingException">if the factory cannot be creates such as for invalid view spec</exception>
/// <returns>list of view factories</returns>
public static IList <ViewFactory> InstantiateFactories(
int streamNum,
IList <ViewSpec> viewSpecList,
StatementContext statementContext,
bool isSubquery,
int subqueryNumber)
{
var factoryChain = new List <ViewFactory>();
var grouped = false;
foreach (var spec in viewSpecList)
{
// Create the new view factory
var viewFactory = statementContext.ViewResolutionService.Create(
statementContext.Container, spec.ObjectNamespace, spec.ObjectName);
var audit = AuditEnum.VIEW.GetAudit(statementContext.Annotations);
if (audit != null)
{
viewFactory = ViewFactoryProxy.NewInstance(
statementContext.EngineURI, statementContext.StatementName, viewFactory, spec.ObjectName);
}
factoryChain.Add(viewFactory);
// Set view factory parameters
try
{
var context = new ViewFactoryContext(
statementContext, streamNum, spec.ObjectNamespace, spec.ObjectName, isSubquery, subqueryNumber,
grouped);
viewFactory.SetViewParameters(context, spec.ObjectParameters);
}
catch (ViewParameterException e)
{
throw new ViewProcessingException(
"Error in view '" + spec.ObjectName +
"', " + e.Message, e);
}
if (viewFactory is GroupByViewFactoryMarker)
{
grouped = true;
}
if (viewFactory is MergeViewFactoryMarker)
{
grouped = false;
}
}
return(factoryChain);
}
public static ExprEvaluator ValidateSizeSingleParam(
string viewName,
ViewFactoryContext viewFactoryContext,
IList <ExprNode> expressionParameters)
{
ExprNode[] validated = ViewFactorySupport.Validate(
viewName, viewFactoryContext.StatementContext, expressionParameters);
if (validated.Length != 1)
{
throw new ViewParameterException(GetViewParamMessage(viewName));
}
return(ValidateSizeParam(viewName, viewFactoryContext.StatementContext, validated[0], 0));
}
public abstract void SetViewParameters(ViewFactoryContext viewFactoryContext, IList <ExprNode> viewParameters);