internal DbArithmeticExpression(DbExpressionKind kind, TypeUsage numericResultType, DbExpressionList args)
: base(kind, numericResultType)
{
Debug.Assert(TypeSemantics.IsNumericType(numericResultType), "DbArithmeticExpression result type must be numeric");
Debug.Assert(
DbExpressionKind.Divide == kind ||
DbExpressionKind.Minus == kind ||
DbExpressionKind.Modulo == kind ||
DbExpressionKind.Multiply == kind ||
DbExpressionKind.Plus == kind ||
DbExpressionKind.UnaryMinus == kind,
"Invalid DbExpressionKind used in DbArithmeticExpression: " + Enum.GetName(typeof(DbExpressionKind), kind)
);
Debug.Assert(args != null, "DbArithmeticExpression arguments cannot be null");
Debug.Assert(
(DbExpressionKind.UnaryMinus == kind && 1 == args.Count) ||
2 == args.Count,
"Incorrect number of arguments specified to DbArithmeticExpression"
);
this._args = args;
}
internal static TypeUsage ValidateNewEntityWithRelationships(
EntityType entityType,
IEnumerable <DbExpression> attributeValues,
IList <DbRelatedEntityRef> relationships,
out DbExpressionList validArguments,
out ReadOnlyCollection <DbRelatedEntityRef> validRelatedRefs)
{
TypeUsage typeUsage = ArgumentValidation.ValidateNew(ArgumentValidation.CreateResultType((EdmType)entityType), attributeValues, out validArguments);
if (relationships.Count > 0)
{
List <DbRelatedEntityRef> relatedEntityRefList = new List <DbRelatedEntityRef>(relationships.Count);
for (int index = 0; index < relationships.Count; ++index)
{
DbRelatedEntityRef relationship = relationships[index];
EntityTypeBase elementType = TypeHelpers.GetEdmType <RefType>(relationship.SourceEnd.TypeUsage).ElementType;
if (!entityType.EdmEquals((MetadataItem)elementType) && !entityType.IsSubtypeOf((EdmType)elementType))
{
throw new ArgumentException(Strings.Cqt_NewInstance_IncompatibleRelatedEntity_SourceTypeNotValid, StringUtil.FormatIndex(nameof(relationships), index));
}
relatedEntityRefList.Add(relationship);
}
validRelatedRefs = new ReadOnlyCollection <DbRelatedEntityRef>((IList <DbRelatedEntityRef>)relatedEntityRefList);
}
else
{
validRelatedRefs = new ReadOnlyCollection <DbRelatedEntityRef>((IList <DbRelatedEntityRef>) new DbRelatedEntityRef[0]);
}
return(typeUsage);
}
internal DbFunctionAggregate(TypeUsage resultType, DbExpressionList arguments, EdmFunction function, bool isDistinct)
: base(resultType, arguments)
{
DebugCheck.NotNull(function);
_aggregateFunction = function;
_distinct = isDistinct;
}
internal DbNewInstanceExpression(
TypeUsage resultType,
DbExpressionList attributeValues,
ReadOnlyCollection <DbRelatedEntityRef> relationships)
: this(resultType, attributeValues)
{
this._relatedEntityRefs = relationships.Count > 0 ? relationships : (ReadOnlyCollection <DbRelatedEntityRef>)null;
}
internal DbArithmeticExpression(
DbExpressionKind kind,
TypeUsage numericResultType,
DbExpressionList args)
: base(kind, numericResultType, true)
{
this._args = args;
}
internal DbAggregate(TypeUsage resultType, DbExpressionList arguments)
{
DebugCheck.NotNull(resultType);
DebugCheck.NotNull(arguments);
_type = resultType;
_args = arguments;
}
internal DbFunctionAggregate(TypeUsage resultType, DbExpressionList arguments, EdmFunction function, bool isDistinct)
: base(resultType, arguments)
{
Debug.Assert(function != null, "DbFunctionAggregate.Function cannot be null");
_aggregateFunction = function;
_distinct = isDistinct;
}
internal DbNewInstanceExpression(TypeUsage resultType, DbExpressionList attributeValues, System.Collections.ObjectModel.ReadOnlyCollection <DbRelatedEntityRef> relationships)
: this(resultType, attributeValues)
{
Debug.Assert(TypeSemantics.IsEntityType(resultType), "An entity type is required to create a NewEntityWithRelationships expression");
Debug.Assert(relationships != null, "Related entity ref collection cannot be null");
this._relatedEntityRefs = (relationships.Count > 0 ? relationships : null);
}
internal DbFunctionAggregate(TypeUsage resultType, DbExpressionList arguments, EdmFunction function, bool isDistinct)
: base(resultType, arguments)
{
Debug.Assert(function != null, "DbFunctionAggregate.Function cannot be null");
_aggregateFunction = function;
_distinct = isDistinct;
}
internal DbFunctionAggregate(TypeUsage resultType, DbExpressionList arguments, EdmFunction function, bool isDistinct)
: base(resultType, arguments)
{
DebugCheck.NotNull(function);
_aggregateFunction = function;
_distinct = isDistinct;
}
internal DbNewInstanceExpression(TypeUsage type, DbExpressionList args)
: base(DbExpressionKind.NewInstance, type)
{
Debug.Assert(args != null, "DbNewInstanceExpression arguments cannot be null");
Debug.Assert(args.Count > 0 || TypeSemantics.IsCollectionType(type), "DbNewInstanceExpression requires at least one argument when not creating an empty collection");
this._elements = args;
}
internal DbAggregate(TypeUsage resultType, DbExpressionList arguments)
{
DebugCheck.NotNull(resultType);
DebugCheck.NotNull(arguments);
Debug.Assert(arguments.Count == 1, "DbAggregate requires a single argument");
_type = resultType;
_args = arguments;
}
internal DbAggregate(TypeUsage resultType, DbExpressionList arguments)
{
Debug.Assert(resultType != null, "DbAggregate.ResultType cannot be null");
Debug.Assert(arguments != null, "DbAggregate.Arguments cannot be null");
Debug.Assert(arguments.Count == 1, "DbAggregate requires a single argument");
this._type = resultType;
this._args = arguments;
}
internal DbAggregate(TypeUsage resultType, DbExpressionList arguments)
{
DebugCheck.NotNull(resultType);
DebugCheck.NotNull(arguments);
Debug.Assert(arguments.Count == 1, "DbAggregate requires a single argument");
_type = resultType;
_args = arguments;
}
internal DbFunctionExpression(
TypeUsage resultType,
EdmFunction function,
DbExpressionList arguments)
: base(DbExpressionKind.Function, resultType, true)
{
this._functionInfo = function;
this._arguments = arguments;
}
internal DbAggregate(TypeUsage resultType, DbExpressionList arguments)
{
Debug.Assert(resultType != null, "DbAggregate.ResultType cannot be null");
Debug.Assert(arguments != null, "DbAggregate.Arguments cannot be null");
Debug.Assert(arguments.Count == 1, "DbAggregate requires a single argument");
this._type = resultType;
this._args = arguments;
}
internal DbFunctionExpression(TypeUsage resultType, EdmFunction function, DbExpressionList arguments)
: base(DbExpressionKind.Function, resultType)
{
Debug.Assert(function != null, "DbFunctionExpression function cannot be null");
Debug.Assert(arguments != null, "DbFunctionExpression arguments cannot be null");
Debug.Assert(object.ReferenceEquals(resultType, function.ReturnParameter.TypeUsage), "DbFunctionExpression result type must be function return type");
this._functionInfo = function;
this._arguments = arguments;
}
internal DbNewInstanceExpression(
TypeUsage resultType, DbExpressionList attributeValues, ReadOnlyCollection <DbRelatedEntityRef> relationships)
: this(resultType, attributeValues)
{
Debug.Assert(
TypeSemantics.IsEntityType(resultType), "An entity type is required to create a NewEntityWithRelationships expression");
DebugCheck.NotNull(relationships);
_relatedEntityRefs = (relationships.Count > 0 ? relationships : null);
}
internal DbFunctionAggregate(
TypeUsage resultType,
DbExpressionList arguments,
EdmFunction function,
bool isDistinct)
: base(resultType, arguments)
{
this._aggregateFunction = function;
this._distinct = isDistinct;
}
internal DbGroupByExpression(
TypeUsage collectionOfRowResultType,
DbGroupExpressionBinding input,
DbExpressionList groupKeys,
ReadOnlyCollection <DbAggregate> aggregates)
: base(DbExpressionKind.GroupBy, collectionOfRowResultType, true)
{
this._input = input;
this._keys = groupKeys;
this._aggregates = aggregates;
}
internal DbLambdaExpression(TypeUsage resultType, DbLambda lambda, DbExpressionList args)
: base(DbExpressionKind.Lambda, resultType)
{
Debug.Assert(lambda != null, "DbLambdaExpression lambda cannot be null");
Debug.Assert(args != null, "DbLambdaExpression arguments cannot be null");
Debug.Assert(object.ReferenceEquals(resultType, lambda.Body.ResultType), "DbLambdaExpression result type must be Lambda body result type");
Debug.Assert(lambda.Variables.Count == args.Count, "DbLambdaExpression argument count does not match Lambda parameter count");
this._lambda = lambda;
this._arguments = args;
}
internal DbCaseExpression(
TypeUsage commonResultType,
DbExpressionList whens,
DbExpressionList thens,
DbExpression elseExpr)
: base(DbExpressionKind.Case, commonResultType, true)
{
this._when = whens;
this._then = thens;
this._else = elseExpr;
}
internal DbLambdaExpression(TypeUsage resultType, DbLambda lambda, DbExpressionList args)
: base(DbExpressionKind.Lambda, resultType)
{
DebugCheck.NotNull(lambda);
DebugCheck.NotNull(args);
Debug.Assert(
ReferenceEquals(resultType, lambda.Body.ResultType), "DbLambdaExpression result type must be Lambda body result type");
Debug.Assert(lambda.Variables.Count == args.Count, "DbLambdaExpression argument count does not match Lambda parameter count");
_lambda = lambda;
_arguments = args;
}
internal DbCaseExpression(TypeUsage commonResultType, DbExpressionList whens, DbExpressionList thens, DbExpression elseExpr)
: base(DbExpressionKind.Case, commonResultType)
{
Debug.Assert(whens != null, "DbCaseExpression whens cannot be null");
Debug.Assert(thens != null, "DbCaseExpression thens cannot be null");
Debug.Assert(elseExpr != null, "DbCaseExpression else cannot be null");
Debug.Assert(whens.Count == thens.Count, "DbCaseExpression whens count must match thens count");
this._when = whens;
this._then = thens;
this._else = elseExpr;
}
internal DbCaseExpression(TypeUsage commonResultType, DbExpressionList whens, DbExpressionList thens, DbExpression elseExpr)
: base(DbExpressionKind.Case, commonResultType)
{
DebugCheck.NotNull(whens);
DebugCheck.NotNull(thens);
DebugCheck.NotNull(elseExpr);
Debug.Assert(whens.Count == thens.Count, "DbCaseExpression whens count must match thens count");
_when = whens;
_then = thens;
_else = elseExpr;
}
internal DbFunctionExpression(TypeUsage resultType, EdmFunction function, DbExpressionList arguments)
: base(DbExpressionKind.Function, resultType)
{
DebugCheck.NotNull(function);
DebugCheck.NotNull(arguments);
Debug.Assert(
ReferenceEquals(resultType, function.ReturnParameter.TypeUsage),
"DbFunctionExpression result type must be function return type");
_functionInfo = function;
_arguments = arguments;
}
internal static TypeUsage ValidateNewEmptyCollection(
TypeUsage collectionType,
out DbExpressionList validElements)
{
ArgumentValidation.CheckType(collectionType, nameof(collectionType));
if (!TypeSemantics.IsCollectionType(collectionType))
{
throw new ArgumentException(Strings.Cqt_NewInstance_CollectionTypeRequired, nameof(collectionType));
}
validElements = new DbExpressionList((IList <DbExpression>) new DbExpression[0]);
return(collectionType);
}
internal static TypeUsage ValidateGroupBy(
IEnumerable <KeyValuePair <string, DbExpression> > keys,
IEnumerable <KeyValuePair <string, DbAggregate> > aggregates,
out DbExpressionList validKeys,
out ReadOnlyCollection <DbAggregate> validAggregates)
{
List <KeyValuePair <string, TypeUsage> > columns = new List <KeyValuePair <string, TypeUsage> >();
HashSet <string> keyNames = new HashSet <string>();
EnumerableValidator <KeyValuePair <string, DbExpression>, DbExpression, DbExpressionList> validator1 = ArgumentValidation.CreateValidator <KeyValuePair <string, DbExpression>, DbExpression, DbExpressionList>(keys, nameof(keys), (Func <KeyValuePair <string, DbExpression>, int, DbExpression>)((keyInfo, index) =>
{
ArgumentValidation.CheckNamed <DbExpression>(keyInfo, nameof(keys), index);
if (!TypeHelpers.IsValidGroupKeyType(keyInfo.Value.ResultType))
{
throw new ArgumentException(Strings.Cqt_GroupBy_KeyNotEqualityComparable((object)keyInfo.Key));
}
keyNames.Add(keyInfo.Key);
columns.Add(new KeyValuePair <string, TypeUsage>(keyInfo.Key, keyInfo.Value.ResultType));
return(keyInfo.Value);
}), (Func <List <DbExpression>, DbExpressionList>)(expList => new DbExpressionList((IList <DbExpression>)expList)));
validator1.AllowEmpty = true;
validator1.GetName = (Func <KeyValuePair <string, DbExpression>, int, string>)((keyInfo, idx) => keyInfo.Key);
validKeys = validator1.Validate();
bool hasGroupAggregate = false;
EnumerableValidator <KeyValuePair <string, DbAggregate>, DbAggregate, ReadOnlyCollection <DbAggregate> > validator2 = ArgumentValidation.CreateValidator <KeyValuePair <string, DbAggregate>, DbAggregate, ReadOnlyCollection <DbAggregate> >(aggregates, nameof(aggregates), (Func <KeyValuePair <string, DbAggregate>, int, DbAggregate>)((aggInfo, idx) =>
{
ArgumentValidation.CheckNamed <DbAggregate>(aggInfo, nameof(aggregates), idx);
if (keyNames.Contains(aggInfo.Key))
{
throw new ArgumentException(Strings.Cqt_GroupBy_AggregateColumnExistsAsGroupColumn((object)aggInfo.Key));
}
if (aggInfo.Value is DbGroupAggregate)
{
if (hasGroupAggregate)
{
throw new ArgumentException(Strings.Cqt_GroupBy_MoreThanOneGroupAggregate);
}
hasGroupAggregate = true;
}
columns.Add(new KeyValuePair <string, TypeUsage>(aggInfo.Key, aggInfo.Value.ResultType));
return(aggInfo.Value);
}), (Func <List <DbAggregate>, ReadOnlyCollection <DbAggregate> >)(aggList => ArgumentValidation.NewReadOnlyCollection <DbAggregate>((IList <DbAggregate>)aggList)));
validator2.AllowEmpty = true;
validator2.GetName = (Func <KeyValuePair <string, DbAggregate>, int, string>)((aggInfo, idx) => aggInfo.Key);
validAggregates = validator2.Validate();
if (validKeys.Count == 0 && validAggregates.Count == 0)
{
throw new ArgumentException(Strings.Cqt_GroupBy_AtLeastOneKeyOrAggregate);
}
return(ArgumentValidation.CreateCollectionOfRowResultType(columns));
}
internal DbInExpression(TypeUsage booleanResultType, DbExpression item, DbExpressionList list)
: base(DbExpressionKind.In, booleanResultType)
{
DebugCheck.NotNull(item);
DebugCheck.NotNull(list);
Debug.Assert(TypeSemantics.IsBooleanType(booleanResultType), "DbInExpression must have a Boolean result type");
Debug.Assert(
list.All(e => TypeSemantics.IsEqual(e.ResultType, item.ResultType)),
"DbInExpression requires the same result type for the input expressions");
_item = item;
_list = list;
}
internal DbGroupByExpression(TypeUsage collectionOfRowResultType,
DbGroupExpressionBinding input,
DbExpressionList groupKeys,
System.Collections.ObjectModel.ReadOnlyCollection <DbAggregate> aggregates)
: base(DbExpressionKind.GroupBy, collectionOfRowResultType)
{
Debug.Assert(input != null, "DbGroupExpression input cannot be null");
Debug.Assert(groupKeys != null, "DbGroupExpression keys cannot be null");
Debug.Assert(aggregates != null, "DbGroupExpression aggregates cannot be null");
Debug.Assert(groupKeys.Count > 0 || aggregates.Count > 0, "At least one key or aggregate is required");
_input = input;
_keys = groupKeys;
_aggregates = aggregates;
}
internal static TypeUsage ValidateInvoke(
DbLambda lambda,
IEnumerable <DbExpression> arguments,
out DbExpressionList validArguments)
{
validArguments = (DbExpressionList)null;
EnumerableValidator <DbExpression, DbExpression, DbExpressionList> validator = ArgumentValidation.CreateValidator <DbExpression, DbExpression, DbExpressionList>(arguments, nameof(arguments), (Func <DbExpression, int, DbExpression>)((exp, idx) =>
{
ArgumentValidation.RequireCompatibleType(exp, lambda.Variables[idx].ResultType, nameof(arguments), idx);
return(exp);
}), (Func <List <DbExpression>, DbExpressionList>)(expList => new DbExpressionList((IList <DbExpression>)expList)));
validator.ExpectedElementCount = lambda.Variables.Count;
validArguments = validator.Validate();
return(lambda.Body.ResultType);
}
internal static TypeUsage ValidateNewRow(
IEnumerable <KeyValuePair <string, DbExpression> > columnValues,
out DbExpressionList validElements)
{
List <KeyValuePair <string, TypeUsage> > columnTypes = new List <KeyValuePair <string, TypeUsage> >();
EnumerableValidator <KeyValuePair <string, DbExpression>, DbExpression, DbExpressionList> validator = ArgumentValidation.CreateValidator <KeyValuePair <string, DbExpression>, DbExpression, DbExpressionList>(columnValues, nameof(columnValues), (Func <KeyValuePair <string, DbExpression>, int, DbExpression>)((columnValue, idx) =>
{
ArgumentValidation.CheckNamed <DbExpression>(columnValue, nameof(columnValues), idx);
columnTypes.Add(new KeyValuePair <string, TypeUsage>(columnValue.Key, columnValue.Value.ResultType));
return(columnValue.Value);
}), (Func <List <DbExpression>, DbExpressionList>)(expList => new DbExpressionList((IList <DbExpression>)expList)));
validator.GetName = (Func <KeyValuePair <string, DbExpression>, int, string>)((columnValue, idx) => columnValue.Key);
validElements = validator.Validate();
return(ArgumentValidation.CreateResultType((EdmType)TypeHelpers.CreateRowType((IEnumerable <KeyValuePair <string, TypeUsage> >)columnTypes)));
}
internal DbGroupByExpression(
TypeUsage collectionOfRowResultType,
DbGroupExpressionBinding input,
DbExpressionList groupKeys,
ReadOnlyCollection <DbAggregate> aggregates)
: base(DbExpressionKind.GroupBy, collectionOfRowResultType)
{
DebugCheck.NotNull(input);
DebugCheck.NotNull(groupKeys);
DebugCheck.NotNull(aggregates);
Debug.Assert(groupKeys.Count > 0 || aggregates.Count > 0, "At least one key or aggregate is required");
_input = input;
_keys = groupKeys;
_aggregates = aggregates;
}
internal static TypeUsage ValidateNew(
TypeUsage instanceType,
IEnumerable <DbExpression> arguments,
out DbExpressionList validArguments)
{
ArgumentValidation.CheckType(instanceType, nameof(instanceType));
CollectionType type = (CollectionType)null;
if (TypeHelpers.TryGetEdmType <CollectionType>(instanceType, out type) && type != null)
{
TypeUsage elementType = type.TypeUsage;
validArguments = ArgumentValidation.CreateExpressionList(arguments, nameof(arguments), true, (Action <DbExpression, int>)((exp, idx) => ArgumentValidation.RequireCompatibleType(exp, elementType, nameof(arguments), idx)));
}
else
{
List <TypeUsage> expectedTypes = ArgumentValidation.GetStructuralMemberTypes(instanceType);
int pos = 0;
validArguments = ArgumentValidation.CreateExpressionList(arguments, nameof(arguments), expectedTypes.Count, (Action <DbExpression, int>)((exp, idx) => ArgumentValidation.RequireCompatibleType(exp, expectedTypes[pos++], nameof(arguments), idx)));
}
return(instanceType);
}
internal DbGroupAggregate(TypeUsage resultType, DbExpressionList arguments)
: base(resultType, arguments)
{
}
