public static ExprDotNodeRealizedChain GetChainEvaluators(
int?streamOfProviderIfApplicable,
EPType inputType,
IList <ExprChainedSpec> chainSpec,
ExprValidationContext validationContext,
bool isDuckTyping,
ExprDotNodeFilterAnalyzerInput inputDesc)
{
var methodEvals = new List <ExprDotEval>();
var currentInputType = inputType;
EnumMethodEnum?lastLambdaFunc = null;
var lastElement = chainSpec.IsEmpty() ? null : chainSpec[chainSpec.Count - 1];
ExprDotNodeFilterAnalyzerDesc filterAnalyzerDesc = null;
var chainSpecStack = new ArrayDeque <ExprChainedSpec>(chainSpec);
while (!chainSpecStack.IsEmpty())
{
var chainElement = chainSpecStack.RemoveFirst();
lastLambdaFunc = null; // reset
// compile parameters for chain element
var paramEvals = new ExprEvaluator[chainElement.Parameters.Count];
var paramTypes = new Type[chainElement.Parameters.Count];
for (var i = 0; i < chainElement.Parameters.Count; i++)
{
paramEvals[i] = chainElement.Parameters[i].ExprEvaluator;
paramTypes[i] = paramEvals[i].ReturnType;
}
// check if special 'size' method
if (currentInputType is ClassMultiValuedEPType)
{
var type = (ClassMultiValuedEPType)currentInputType;
if ((chainElement.Name.ToLower() == "size") && paramTypes.Length == 0 && Equals(lastElement, chainElement))
{
var sizeExpr = new ExprDotEvalArraySize();
methodEvals.Add(sizeExpr);
currentInputType = sizeExpr.TypeInfo;
continue;
}
if ((chainElement.Name.ToLower() == "get") && paramTypes.Length == 1 && paramTypes[0].GetBoxedType() == typeof(int?))
{
var componentType = type.Component;
var get = new ExprDotEvalArrayGet(paramEvals[0], componentType);
methodEvals.Add(get);
currentInputType = get.TypeInfo;
continue;
}
}
// determine if there is a matching method
var matchingMethod = false;
var methodTarget = GetMethodTarget(currentInputType);
if (methodTarget != null)
{
try
{
GetValidateMethodDescriptor(methodTarget, chainElement.Name, chainElement.Parameters, validationContext);
matchingMethod = true;
}
catch (ExprValidationException)
{
// expected
}
}
// resolve lambda
if (chainElement.Name.IsEnumerationMethod() && (!matchingMethod || methodTarget.IsArray || methodTarget.IsImplementsInterface(typeof(ICollection <object>))))
{
var enumerationMethod = EnumMethodEnumExtensions.FromName(chainElement.Name);
var eval = TypeHelper.Instantiate <ExprDotEvalEnumMethod>(enumerationMethod.GetImplementation());
eval.Init(streamOfProviderIfApplicable, enumerationMethod, chainElement.Name, currentInputType, chainElement.Parameters, validationContext);
currentInputType = eval.TypeInfo;
if (currentInputType == null)
{
throw new IllegalStateException("Enumeration method '" + chainElement.Name + "' has not returned type information");
}
methodEvals.Add(eval);
lastLambdaFunc = enumerationMethod;
continue;
}
// resolve datetime
if (chainElement.Name.IsDateTimeMethod() && (!matchingMethod || methodTarget == typeof(DateTimeOffset?)))
{
var datetimeMethod = DatetimeMethodEnumExtensions.FromName(chainElement.Name);
var datetimeImpl = ExprDotEvalDTFactory.ValidateMake(
validationContext.StreamTypeService, chainSpecStack, datetimeMethod, chainElement.Name,
currentInputType, chainElement.Parameters, inputDesc,
validationContext.EngineImportService.TimeZone,
validationContext.EngineImportService.TimeAbacus);
currentInputType = datetimeImpl.ReturnType;
if (currentInputType == null)
{
throw new IllegalStateException("Date-time method '" + chainElement.Name + "' has not returned type information");
}
methodEvals.Add(datetimeImpl.Eval);
filterAnalyzerDesc = datetimeImpl.IntervalFilterDesc;
continue;
}
// try to resolve as property if the last method returned a type
if (currentInputType is EventEPType)
{
var inputEventType = ((EventEPType)currentInputType).EventType;
var type = inputEventType.GetPropertyType(chainElement.Name);
var getter = inputEventType.GetGetter(chainElement.Name);
if (type != null && getter != null)
{
var noduck = new ExprDotEvalProperty(getter, EPTypeHelper.SingleValue(type.GetBoxedType()));
methodEvals.Add(noduck);
currentInputType = EPTypeHelper.SingleValue(EPTypeHelper.GetClassSingleValued(noduck.TypeInfo));
continue;
}
}
// Finally try to resolve the method
if (methodTarget != null)
{
try
{
// find descriptor again, allow for duck typing
var desc = GetValidateMethodDescriptor(methodTarget, chainElement.Name, chainElement.Parameters, validationContext);
var fastMethod = desc.FastMethod;
paramEvals = desc.ChildEvals;
ExprDotEval eval;
if (currentInputType is ClassEPType)
{
// if followed by an enumeration method, convert array to collection
if (fastMethod.ReturnType.IsArray && !chainSpecStack.IsEmpty() && chainSpecStack.First.Name.IsEnumerationMethod())
{
eval = new ExprDotMethodEvalNoDuckWrapArray(validationContext.StatementName, fastMethod, paramEvals);
}
else
{
eval = new ExprDotMethodEvalNoDuck(validationContext.StatementName, fastMethod, paramEvals);
}
}
else
{
eval = new ExprDotMethodEvalNoDuckUnderlying(validationContext.StatementName, fastMethod, paramEvals);
}
methodEvals.Add(eval);
currentInputType = eval.TypeInfo;
}
catch (Exception e)
{
if (!isDuckTyping)
{
throw new ExprValidationException(e.Message, e);
}
else
{
var duck = new ExprDotMethodEvalDuck(validationContext.StatementName, validationContext.EngineImportService, chainElement.Name, paramTypes, paramEvals);
methodEvals.Add(duck);
currentInputType = duck.TypeInfo;
}
}
continue;
}
var message = "Could not find event property, enumeration method or instance method named '" +
chainElement.Name + "' in " + currentInputType.ToTypeDescriptive();
throw new ExprValidationException(message);
}
var intermediateEvals = methodEvals.ToArray();
if (lastLambdaFunc != null)
{
ExprDotEval finalEval = null;
if (currentInputType is EventMultiValuedEPType)
{
var mvType = (EventMultiValuedEPType)currentInputType;
var tableMetadata = validationContext.TableService.GetTableMetadataFromEventType(mvType.Component);
if (tableMetadata != null)
{
finalEval = new ExprDotEvalUnpackCollEventBeanTable(mvType.Component, tableMetadata);
}
else
{
finalEval = new ExprDotEvalUnpackCollEventBean(mvType.Component);
}
}
else if (currentInputType is EventEPType)
{
var epType = (EventEPType)currentInputType;
var tableMetadata = validationContext.TableService.GetTableMetadataFromEventType(epType.EventType);
if (tableMetadata != null)
{
finalEval = new ExprDotEvalUnpackBeanTable(epType.EventType, tableMetadata);
}
else
{
finalEval = new ExprDotEvalUnpackBean(epType.EventType);
}
}
if (finalEval != null)
{
methodEvals.Add(finalEval);
}
}
var unpackingEvals = methodEvals.ToArray();
return(new ExprDotNodeRealizedChain(intermediateEvals, unpackingEvals, filterAnalyzerDesc));
}
public static ExprDotNodeRealizedChain GetChainEvaluators(
int? streamOfProviderIfApplicable,
EPType inputType,
IList<ExprChainedSpec> chainSpec,
ExprValidationContext validationContext,
bool isDuckTyping,
ExprDotNodeFilterAnalyzerInput inputDesc)
{
IList<ExprDotForge> methodForges = new List<ExprDotForge>();
var currentInputType = inputType;
EnumMethodEnum? lastLambdaFunc = null;
var lastElement = chainSpec.IsEmpty() ? null : chainSpec[chainSpec.Count - 1];
FilterExprAnalyzerAffector filterAnalyzerDesc = null;
Deque<ExprChainedSpec> chainSpecStack = new ArrayDeque<ExprChainedSpec>(chainSpec);
while (!chainSpecStack.IsEmpty()) {
var chainElement = chainSpecStack.RemoveFirst();
lastLambdaFunc = null; // reset
// compile parameters for chain element
var paramForges = new ExprForge[chainElement.Parameters.Count];
var paramTypes = new Type[chainElement.Parameters.Count];
for (var i = 0; i < chainElement.Parameters.Count; i++) {
paramForges[i] = chainElement.Parameters[i].Forge;
paramTypes[i] = paramForges[i].EvaluationType;
}
// check if special 'size' method
if (currentInputType is ClassMultiValuedEPType) {
var type = (ClassMultiValuedEPType) currentInputType;
if (chainElement.Name.Equals("size", StringComparison.InvariantCultureIgnoreCase) &&
paramTypes.Length == 0 &&
lastElement == chainElement) {
var sizeExpr = new ExprDotForgeArraySize();
methodForges.Add(sizeExpr);
currentInputType = sizeExpr.TypeInfo;
continue;
}
if (chainElement.Name.Equals("get", StringComparison.InvariantCultureIgnoreCase) &&
paramTypes.Length == 1 &&
Boxing.GetBoxedType(paramTypes[0]) == typeof(int?)) {
var componentType = Boxing.GetBoxedType(type.Component);
var get = new ExprDotForgeArrayGet(paramForges[0], componentType);
methodForges.Add(get);
currentInputType = get.TypeInfo;
continue;
}
}
// determine if there is a matching method
var matchingMethod = false;
var methodTarget = GetMethodTarget(currentInputType);
if (methodTarget != null) {
try {
GetValidateMethodDescriptor(
methodTarget,
chainElement.Name,
chainElement.Parameters,
validationContext);
matchingMethod = true;
}
catch (ExprValidationException) {
// expected
}
}
if (EnumMethodEnumExtensions.IsEnumerationMethod(chainElement.Name) &&
(!matchingMethod || methodTarget.IsArray || methodTarget.IsGenericCollection())) {
var enumerationMethod = EnumMethodEnumExtensions.FromName(chainElement.Name);
if (enumerationMethod == null) {
throw new EPException("unable to determine enumeration method from name");
}
var eval = TypeHelper.Instantiate<ExprDotForgeEnumMethod>(
enumerationMethod.Value.GetImplementation());
eval.Init(
streamOfProviderIfApplicable,
enumerationMethod.Value,
chainElement.Name,
currentInputType,
chainElement.Parameters,
validationContext);
currentInputType = eval.TypeInfo;
if (currentInputType == null) {
throw new IllegalStateException(
"Enumeration method '" + chainElement.Name + "' has not returned type information");
}
methodForges.Add(eval);
lastLambdaFunc = enumerationMethod;
continue;
}
// resolve datetime
if (DatetimeMethodEnumHelper.IsDateTimeMethod(chainElement.Name) &&
(!matchingMethod ||
methodTarget == typeof(DateTimeEx) ||
methodTarget == typeof(DateTimeOffset) ||
methodTarget == typeof(DateTime))) {
var dateTimeMethod = DatetimeMethodEnumHelper.FromName(chainElement.Name);
var datetimeImpl = ExprDotDTFactory.ValidateMake(
validationContext.StreamTypeService,
chainSpecStack,
dateTimeMethod,
chainElement.Name,
currentInputType,
chainElement.Parameters,
inputDesc,
validationContext.ImportService.TimeAbacus,
null,
validationContext.TableCompileTimeResolver);
currentInputType = datetimeImpl.ReturnType;
if (currentInputType == null) {
throw new IllegalStateException(
"Date-time method '" + chainElement.Name + "' has not returned type information");
}
methodForges.Add(datetimeImpl.Forge);
filterAnalyzerDesc = datetimeImpl.IntervalFilterDesc;
continue;
}
// try to resolve as property if the last method returned a type
if (currentInputType is EventEPType) {
var inputEventType = (EventTypeSPI) ((EventEPType) currentInputType).EventType;
var type = inputEventType.GetPropertyType(chainElement.Name);
var getter = inputEventType.GetGetterSPI(chainElement.Name);
if (type != null && getter != null) {
var noduck = new ExprDotForgeProperty(
getter,
EPTypeHelper.SingleValue(Boxing.GetBoxedType(type)));
methodForges.Add(noduck);
currentInputType = EPTypeHelper.SingleValue(EPTypeHelper.GetClassSingleValued(noduck.TypeInfo));
continue;
}
}
// Finally try to resolve the method
if (methodTarget != null) {
try {
// find descriptor again, allow for duck typing
var desc = GetValidateMethodDescriptor(
methodTarget,
chainElement.Name,
chainElement.Parameters,
validationContext);
paramForges = desc.ChildForges;
ExprDotForge forge;
if (currentInputType is ClassEPType) {
// if followed by an enumeration method, convert array to collection
if (desc.ReflectionMethod.ReturnType.IsArray &&
!chainSpecStack.IsEmpty() &&
EnumMethodEnumExtensions.IsEnumerationMethod(chainSpecStack.First.Name)) {
forge = new ExprDotMethodForgeNoDuck(
validationContext.StatementName,
desc.ReflectionMethod,
paramForges,
ExprDotMethodForgeNoDuck.DuckType.WRAPARRAY);
}
else {
forge = new ExprDotMethodForgeNoDuck(
validationContext.StatementName,
desc.ReflectionMethod,
paramForges,
ExprDotMethodForgeNoDuck.DuckType.PLAIN);
}
}
else {
forge = new ExprDotMethodForgeNoDuck(
validationContext.StatementName,
desc.ReflectionMethod,
paramForges,
ExprDotMethodForgeNoDuck.DuckType.UNDERLYING);
}
methodForges.Add(forge);
currentInputType = forge.TypeInfo;
}
catch (Exception e) {
if (!isDuckTyping) {
throw new ExprValidationException(e.Message, e);
}
var duck = new ExprDotMethodForgeDuck(
validationContext.StatementName,
validationContext.ImportService,
chainElement.Name,
paramTypes,
paramForges);
methodForges.Add(duck);
currentInputType = duck.TypeInfo;
}
continue;
}
var message = "Could not find event property, enumeration method or instance method named '" +
chainElement.Name +
"' in " +
EPTypeHelper.ToTypeDescriptive(currentInputType);
throw new ExprValidationException(message);
}
var intermediateEvals = methodForges.ToArray();
if (lastLambdaFunc != null) {
ExprDotForge finalEval = null;
if (currentInputType is EventMultiValuedEPType) {
var mvType = (EventMultiValuedEPType) currentInputType;
var tableMetadata =
validationContext.TableCompileTimeResolver.ResolveTableFromEventType(mvType.Component);
if (tableMetadata != null) {
finalEval = new ExprDotForgeUnpackCollEventBeanTable(mvType.Component, tableMetadata);
}
else {
finalEval = new ExprDotForgeUnpackCollEventBean(mvType.Component);
}
}
else if (currentInputType is EventEPType) {
var epType = (EventEPType) currentInputType;
var tableMetadata =
validationContext.TableCompileTimeResolver.ResolveTableFromEventType(epType.EventType);
if (tableMetadata != null) {
finalEval = new ExprDotForgeUnpackBeanTable(epType.EventType, tableMetadata);
}
else {
finalEval = new ExprDotForgeUnpackBean(epType.EventType);
}
}
if (finalEval != null) {
methodForges.Add(finalEval);
}
}
var unpackingForges = methodForges.ToArray();
return new ExprDotNodeRealizedChain(intermediateEvals, unpackingForges, filterAnalyzerDesc);
}
