public AqlQueryable <T> Query <T>()
{
var queryParser = LinqUtility.CreateQueryParser();
var executer = new AqlQueryExecuter(this);
return(new AqlQueryable <T>(queryParser, executer, this));
}
public TraversalClause(Expression startVertex, Expression targetVertex, string identifier)
: this(startVertex, identifier)
{
LinqUtility.CheckNotNull("tagetVertex", targetVertex);
TargetVertex = targetVertex;
}
public override Expression Resolve(ParameterExpression inputParameter, Expression expressionToBeResolved, ClauseGenerationContext clauseGenerationContext)
{
LinqUtility.CheckNotNull("inputParameter", inputParameter);
LinqUtility.CheckNotNull("expressionToBeResolved", expressionToBeResolved);
return(Source.Resolve(inputParameter, expressionToBeResolved, clauseGenerationContext));
}
public static IEnumerable <Warning> Warnings(FlowGraph graph, IEnumerable <IUnitPortDefinition> definitions = null)
{
if (definitions == null)
{
definitions = LinqUtility.Concat <IUnitPortDefinition>(graph.controlInputDefinitions,
graph.controlOutputDefinitions,
graph.valueInputDefinitions,
graph.valueOutputDefinitions);
}
var hasDuplicate = definitions.DistinctBy(d => d.key).Count() != definitions.Count();
if (hasDuplicate)
{
yield return(Warning.Caution("Some port definitions with non-unique keys are currently ignored."));
}
foreach (var definition in definitions)
{
if (!definition.isValid)
{
yield return(InvalidWarning(definition));
}
}
}
public LetSelectExpressionNode(MethodCallExpressionParseInfo parseInfo, LambdaExpression selector)
: base(LinqUtility.CheckNotNull("parseInfo", parseInfo), LinqUtility.CheckNotNull("selector", selector))
{
// Heuristically detect "let" constructs
// Assume a Select call is a "let" construct if its selector looks like this: <x> => new { <x> = <x>, <y> = ... }
var selectorBody = selector.Body as NewExpression;
if (selectorBody != null &&
selectorBody.Arguments.Count == 2 &&
selectorBody.Arguments[0] == selector.Parameters[0]
//&& selectorBody.Constructor.DeclaringType.IsDefined(typeof(CompilerGeneratedAttribute), false)
&& selectorBody.Members != null &&
selectorBody.Members.Count == 2)
{
_letConstruction = selectorBody;
_resolvedAdaptedSelector = new ResolvedExpressionCache <Expression>(this);
_resolvedLetExpression = new ResolvedExpressionCache <Expression>(this);
}
else
{
_letConstruction = null;
_resolvedAdaptedSelector = null;
_resolvedLetExpression = null;
}
}
T GetConstantValueFromExpression <T>(string expressionName, Expression expression)
{
LinqUtility.CheckNotNull("expression", expression);
if (!typeof(T).GetTypeInfo().IsAssignableFrom(expression.Type.GetTypeInfo()))
{
var message = string.Format(
"The value stored by the {0} expression ('{1}') is not of type '{2}', it is of type '{3}'.",
expressionName,
expression.ToString(),
typeof(T),
expression.Type);
throw new ArgumentException(message, "expression");
}
var itemAsConstantExpression = expression as ConstantExpression;
if (itemAsConstantExpression != null)
{
return((T)itemAsConstantExpression.Value);
}
else
{
var message = string.Format(
"The {0} expression ('{1}') is no ConstantExpression, it is a {2}.",
expressionName,
expression.ToString(),
expression.GetType().Name);
throw new ArgumentException(message, "expression");
}
}
public virtual void TransformExpressions(Func <Expression, Expression> transformation)
{
LinqUtility.CheckNotNull("transformation", transformation);
SearchSelector = transformation(SearchSelector);
InsertSelector = transformation(InsertSelector);
UpdateSelector = transformation(UpdateSelector);
}
public FilterClause Clone(CloneContext cloneContext)
{
LinqUtility.CheckNotNull("cloneContext", cloneContext);
var clone = new FilterClause(Predicate);
return(clone);
}
public LetClause(string itemName, Expression letExpression)
{
LinqUtility.CheckNotNull("itemName", itemName);
LinqUtility.CheckNotNull("letExpression", letExpression);
_itemName = itemName;
_letExpression = letExpression;
}
protected override void ApplyNodeSpecificSemantics(QueryModel queryModel, ClauseGenerationContext clauseGenerationContext)
{
LinqUtility.CheckNotNull("queryModel", queryModel);
var clause = new FilterClause(GetResolvedPredicate(clauseGenerationContext));
queryModel.BodyClauses.Add(clause);
}
public virtual SkipTakeClause Clone(CloneContext cloneContext)
{
LinqUtility.CheckNotNull("cloneContext", cloneContext);
var clone = new SkipTakeClause(SkipCount, TakeCount);
return(clone);
}
public RemoveClause Clone(CloneContext cloneContext)
{
LinqUtility.CheckNotNull("cloneContext", cloneContext);
var result = new RemoveClause(ItemName, CollectionType, KeySelector);
return(result);
}
public UpdateReplaceClause Clone(CloneContext cloneContext)
{
LinqUtility.CheckNotNull("cloneContext", cloneContext);
var result = new UpdateReplaceClause(WithSelector, ItemName, CollectionType, KeySelector, Command);
return(result);
}
protected override void ApplyNodeSpecificSemantics(QueryModel queryModel, ClauseGenerationContext clauseGenerationContext)
{
LinqUtility.CheckNotNull("queryModel", queryModel);
var modificationClause = queryModel.BodyClauses.NextBodyClause <IModificationClause>();
modificationClause.IgnoreSelect = true;
}
protected override void ApplyNodeSpecificSemantics(QueryModel queryModel, ClauseGenerationContext clauseGenerationContext)
{
LinqUtility.CheckNotNull("queryModel", queryModel);
var traversalClause = queryModel.BodyClauses.Last(b => b is ITraversalClause) as ITraversalClause;
traversalClause.Options = Options;
}
public UpsertClause Clone(CloneContext cloneContext)
{
LinqUtility.CheckNotNull("cloneContext", cloneContext);
var result = new UpsertClause(SearchSelector, InsertSelector, UpdateSelector, ItemName, CollectionType);
return(result);
}
public virtual TraversalClause Clone(CloneContext cloneContext)
{
LinqUtility.CheckNotNull("cloneContext", cloneContext);
var clone = new TraversalClause(StartVertex, Identifier);
return(clone);
}
protected override void ApplyNodeSpecificSemantics(QueryModel queryModel, ClauseGenerationContext clauseGenerationContext)
{
LinqUtility.CheckNotNull("queryModel", queryModel);
var modificationClause = queryModel.BodyClauses.NextBodyClause <IModificationClause>(0);
modificationClause.CollectionType = CollectionToModify;
}
public InsertClause Clone(CloneContext cloneContext)
{
LinqUtility.CheckNotNull("cloneContext", cloneContext);
var result = new InsertClause(WithSelector, ItemName, CollectionType);
return(result);
}
public GroupByClause Clone(CloneContext cloneContext)
{
LinqUtility.CheckNotNull("cloneContext", cloneContext);
var clone = new GroupByClause(Selector, lambdaSelector, intoIdentifier);
return(clone);
}
public void TransformExpressions(Func <Expression, Expression> transformation)
{
LinqUtility.CheckNotNull("transformation", transformation);
if (SkipCount != null)
{
SkipCount = transformation(SkipCount);
}
TakeCount = transformation(TakeCount);
}
public void TransformExpressions(Func <Expression, Expression> transformation)
{
LinqUtility.CheckNotNull("transformation", transformation);
StartVertex = transformation(StartVertex);
if (TargetVertex != null)
{
TargetVertex = transformation(TargetVertex);
}
}
public override Expression Resolve(
ParameterExpression inputParameter, Expression expressionToBeResolved, ClauseGenerationContext clauseGenerationContext)
{
LinqUtility.CheckNotNull("inputParameter", inputParameter);
LinqUtility.CheckNotNull("expressionToBeResolved", expressionToBeResolved);
// this simply streams its input data to the output without modifying its structure, so we resolve by passing on the data to the previous node
return(Source.Resolve(inputParameter, expressionToBeResolved, clauseGenerationContext));
}
protected override void ApplyNodeSpecificSemantics(QueryModel queryModel, ClauseGenerationContext clauseGenerationContext)
{
LinqUtility.CheckNotNull("queryModel", queryModel);
queryModel.BodyClauses.Add(new RemoveClause(
queryModel.MainFromClause.ItemName,
(Type)Collection.Value,
KeySelector != null ? GetResolvedKeyPredicate(clauseGenerationContext) : null));
}
protected override void ApplyNodeSpecificSemantics(QueryModel queryModel, ClauseGenerationContext clauseGenerationContext)
{
LinqUtility.CheckNotNull("queryModel", queryModel);
queryModel.BodyClauses.Add(new UpdateReplaceClause(GetResolvedPredicate(clauseGenerationContext),
queryModel.MainFromClause.ItemName,
WithSelector.Parameters[0].Type,
KeySelector != null ? GetResolvedKeyPredicate(clauseGenerationContext) : null,
Command.Value.ToString()));
}
public TraversalClause(Expression startVertex, string identifier)
{
LinqUtility.CheckNotNull("startVertex", startVertex);
LinqUtility.CheckNotNull("identifier", identifier);
EdgeCollections = new List <TraversalEdgeDefinition>();
StartVertex = startVertex;
Identifier = identifier;
}
public override Expression Resolve(ParameterExpression inputParameter, Expression expressionToBeResolved, ClauseGenerationContext clauseGenerationContext)
{
LinqUtility.CheckNotNull("inputParameter", inputParameter);
LinqUtility.CheckNotNull("expressionToBeResolved", expressionToBeResolved);
var resolvedSelector = GetResolvedAdaptedSelector(clauseGenerationContext);
var resolved = ReplacingExpressionVisitor.Replace(inputParameter, Expression.Parameter(resolvedSelector.Type, identifier), expressionToBeResolved);
return(resolved);
}
public override Expression Resolve(
ParameterExpression inputParameter, Expression expressionToBeResolved, ClauseGenerationContext clauseGenerationContext)
{
LinqUtility.CheckNotNull("inputParameter", inputParameter);
LinqUtility.CheckNotNull("expressionToBeResolved", expressionToBeResolved);
// we modify the structure of the stream of data coming into this node by our selector,
// so we first resolve the selector, then we substitute the result for the inputParameter in the expressionToBeResolved
var resolvedSelector = GetResolvedSelector(clauseGenerationContext);
return(ReplacingExpressionVisitor.Replace(inputParameter, resolvedSelector, expressionToBeResolved));
}
protected override void ApplyNodeSpecificSemantics(QueryModel queryModel, ClauseGenerationContext clauseGenerationContext)
{
LinqUtility.CheckNotNull("queryModel", queryModel);
queryModel.BodyClauses.Add(new UpsertClause(
GetResolvedSearchPredicate(clauseGenerationContext),
GetResolvedInsertPredicate(clauseGenerationContext),
GetResolvedUpdatePredicate(clauseGenerationContext),
queryModel.MainFromClause.ItemName,
UpdateType.Value as Type
));
}
protected override void ApplyNodeSpecificSemantics(QueryModel queryModel, ClauseGenerationContext clauseGenerationContext)
{
LinqUtility.CheckNotNull("queryModel", queryModel);
var traversalClause = new TraversalClause(StartVertex, identifier);
queryModel.BodyClauses.Add(traversalClause);
clauseGenerationContext.AddContextInfo(this, traversalClause);
//queryModel.SelectClause.Selector = GetResolvedAdaptedSelector(clauseGenerationContext);
}
