public GremlinRepeatVariable(
GremlinVariable inputVariable,
GremlinToSqlContext repeatContext,
RepeatCondition repeatCondition,
GremlinVariableType variableType) : base(variableType)
{
this.InputVariable = new GremlinContextVariable(inputVariable);
this.RepeatContext = repeatContext;
this.RepeatCondition = repeatCondition;
this.Count = 0;
GremlinRepeatContextVariable repeatContextVariable = this.RepeatContext.VariableList.First() as GremlinRepeatContextVariable;
GremlinUntilContextVariable untilContextVariable = null;
if (this.RepeatCondition.TerminationContext?.VariableList.Count > 0)
{
untilContextVariable = this.RepeatCondition.TerminationContext.VariableList.First() as GremlinUntilContextVariable;
}
GremlinEmitContextVariable emitContextVariable = null;
if (this.RepeatCondition.EmitContext?.VariableList.Count > 0)
{
emitContextVariable = this.RepeatCondition.EmitContext?.VariableList?.First() as GremlinEmitContextVariable;
}
if (repeatContextVariable?.LabelPropertyList.Count > 0 ||
untilContextVariable?.LabelPropertyList.Count > 0 || emitContextVariable?.LabelPropertyList.Count > 0)
{
this.PopulateLocalPath();
repeatContextVariable?.SetContextLocalPath(this.RepeatContext.ContextLocalPath);
untilContextVariable?.SetContextLocalPath(this.RepeatContext.ContextLocalPath);
emitContextVariable?.SetContextLocalPath(this.RepeatContext.ContextLocalPath);
}
}
public GremlinOptionalVariable(GremlinVariable inputVariable, GremlinToSqlContext context,
GremlinVariableType variableType) : base(variableType)
{
inputVariable.ProjectedProperties.Clear();
this.OptionalContext = context;
this.InputVariable = new GremlinContextVariable(inputVariable);
}
internal virtual void Repeat(GremlinToSqlContext currentContext, GremlinToSqlContext repeatContext,
RepeatCondition repeatCondition)
{
GremlinVariableType variableType = repeatContext.PivotVariable.GetVariableType() == GetVariableType()
? GetVariableType()
: GremlinVariableType.Table;
GremlinRepeatVariable repeatVariable = new GremlinRepeatVariable(this, repeatContext, repeatCondition, variableType);
currentContext.VariableList.Add(repeatVariable);
currentContext.TableReferences.Add(repeatVariable);
currentContext.SetPivotVariable(repeatVariable);
//TODO: refactor
List <GremlinVariable> allTableVars = repeatVariable.FetchAllTableVars();
foreach (var variable in allTableVars)
{
var pathVariable = variable as GremlinGlobalPathVariable;
if (pathVariable != null)
{
repeatVariable.PopulateLocalPath();
foreach (var property in pathVariable.ProjectedProperties)
{
repeatContext.ContextLocalPath.Populate(property);
}
pathVariable.IsInRepeatContext = true;
pathVariable.PathList.Insert(pathVariable.PathList.FindLastIndex(p => p == repeatContext.StepList.First()), null);
}
}
}
public GremlinOptionalVariable(GremlinVariable inputVariable,
GremlinToSqlContext context,
GremlinVariableType variableType)
: base(variableType)
{
OptionalContext = context;
InputVariable = inputVariable;
}
public GremlinChooseVariable(GremlinToSqlContext predicateContext, GremlinToSqlContext trueChoiceContext,
GremlinToSqlContext falseChocieContext, GremlinVariableType variableType) : base(variableType)
{
this.PredicateContext = predicateContext;
this.TrueChoiceContext = trueChoiceContext;
this.FalseChocieContext = falseChocieContext;
this.Options = new Dictionary <object, GremlinToSqlContext>();
}
public GremlinRepeatVariable(GremlinVariable inputVariable,
GremlinToSqlContext repeatContext,
RepeatCondition repeatCondition,
GremlinVariableType variableType)
: base(variableType)
{
RepeatContext = repeatContext;
InputVariable = inputVariable;
RepeatCondition = repeatCondition;
}
public GremlinLabelVariable(GremlinVariable projectVariable)
{
GremlinVariableType inputVariableType = projectVariable.GetVariableType();
if (!(inputVariableType <= GremlinVariableType.Unknown))
{
throw new SyntaxErrorException("The inputVariable of label() can not be " + inputVariableType);
}
this.ProjectVariable = projectVariable;
}
internal virtual void Optional(GremlinToSqlContext currentContext, GremlinToSqlContext optionalContext)
{
GremlinVariableType variableType = GetVariableType() == optionalContext.PivotVariable.GetVariableType()
? GetVariableType()
: GremlinVariableType.Table;
GremlinOptionalVariable newVariable = new GremlinOptionalVariable(this, optionalContext, variableType);
currentContext.VariableList.Add(newVariable);
currentContext.TableReferences.Add(newVariable);
currentContext.SetPivotVariable(newVariable);
}
public GremlinMeanLocalVariable(GremlinVariable inputVariable)
{
GremlinVariableType inputVariableType = inputVariable.GetVariableType();
if (!(inputVariableType == GremlinVariableType.List || GremlinVariableType.NULL <= inputVariableType && inputVariableType <= GremlinVariableType.Unknown))
{
throw new SyntaxErrorException("The inputVariable of mean(local) can not be " + inputVariableType);
}
this.InputVariable = inputVariable;
}
public GremlinEdgeToVertexVariable(GremlinVariable edgeVariable)
{
GremlinVariableType inputVariableType = edgeVariable.GetVariableType();
if (!(inputVariableType <= GremlinVariableType.Unknown && inputVariableType != GremlinVariableType.Vertex))
{
throw new SyntaxErrorException("The inputVariable of VertexToEdgeVariable must be a Edge");
}
this.EdgeVariable = edgeVariable;
}
public GremlinRepeatVariable(GremlinVariable inputVariable,
GremlinToSqlContext repeatContext,
RepeatCondition repeatCondition,
GremlinVariableType variableType)
: base(variableType)
{
RepeatContext = repeatContext;
RepeatContext.HomeVariable = this;
InputVariable = inputVariable;
RepeatCondition = repeatCondition;
SelectedVariableList = new List <Tuple <string, GremlinRepeatSelectedVariable> >();
}
public GremlinIdVariable(GremlinVariable projectVariable)
{
GremlinVariableType inputVariableType = projectVariable.GetVariableType();
if (!(inputVariableType <= GremlinVariableType.Unknown || inputVariableType == GremlinVariableType.VertexProperty ||
inputVariableType == GremlinVariableType.Property))
{
throw new SyntaxErrorException("The inputVariable of id() can not be " + inputVariableType);
}
this.ProjectVariable = projectVariable;
}
public GremlinPropertiesVariable(GremlinVariable inputVariable, List <string> propertyKeys)
{
GremlinVariableType inputVariableType = inputVariable.GetVariableType();
if (!(inputVariableType <= GremlinVariableType.Unknown || inputVariableType == GremlinVariableType.VertexProperty))
{
throw new SyntaxErrorException("The inputVariable of properties() can not be " + inputVariableType);
}
this.InputVariable = inputVariable;
this.PropertyKeys = new List <string>(propertyKeys);
}
public GremlinPropertyMapVariable(GremlinVariable inputVariable, List <string> propertyKeys)
{
GremlinVariableType inputVariableType = inputVariable.GetVariableType();
if (!(inputVariableType <= GremlinVariableType.Unknown))
{
throw new SyntaxErrorException("The inputVariable of propertyMap() can not be " + inputVariableType);
}
this.InputVariable = inputVariable;
this.PropertyKeys = propertyKeys;
}
public GremlinValuesVariable(GremlinVariable projectVariable, List <string> propertyKeys)
{
GremlinVariableType inputVariableType = projectVariable.GetVariableType();
if (!(inputVariableType <= GremlinVariableType.Unknown))
{
throw new SyntaxErrorException("The inputVariable of values() can not be " + inputVariableType);
}
this.ProjectVariable = projectVariable;
this.PropertyKeys = new List <string>(propertyKeys);
}
internal virtual void Repeat(GremlinToSqlContext currentContext, GremlinToSqlContext repeatContext,
RepeatCondition repeatCondition)
{
GremlinVariableType variableType = repeatContext.PivotVariable.GetVariableType() == GetVariableType()
? GetVariableType()
: GremlinVariableType.Table;
GremlinRepeatVariable newVariable = new GremlinRepeatVariable(this, repeatContext, repeatCondition, variableType);
currentContext.VariableList.Add(newVariable);
currentContext.TableReferences.Add(newVariable);
currentContext.SetPivotVariable(newVariable);
}
internal static string GenerateTableAlias(GremlinVariableType variableType)
{
switch (variableType)
{
case GremlinVariableType.Vertex:
return("N_" + _vertexCount++);
case GremlinVariableType.Edge:
return("E_" + _edgeCount++);
}
return("R_" + _tableCount++);
}
public GremlinValueMapVariable(GremlinVariable inputVariable, bool isIncludeTokens, List <string> propertyKeys)
{
GremlinVariableType inputVariableType = inputVariable.GetVariableType();
if (!(inputVariableType <= GremlinVariableType.Unknown))
{
throw new SyntaxErrorException("The inputVariable of valueMap() can not be " + inputVariableType);
}
this.InputVariable = inputVariable;
this.IsIncludeTokens = isIncludeTokens;
this.PropertyKeys = propertyKeys;
}
public GremlinSelectColumnVariable(GremlinVariable inputVariable, GremlinKeyword.Column column) : base(GremlinVariableType.Unknown)
{
GremlinVariableType inputVariableType = inputVariable.GetVariableType();
if (!(GremlinVariableType.NULL <= inputVariableType && inputVariableType <= GremlinVariableType.Map ||
inputVariableType == GremlinVariableType.Path || inputVariableType == GremlinVariableType.Tree))
{
throw new SyntaxErrorException("The inputVariable of select() can not be " + inputVariableType);
}
this.InputVariable = inputVariable;
this.Column = column;
}
internal override GremlinToSqlContext GetContext()
{
GremlinToSqlContext inputContext = GetInputContext();
if (inputContext.PivotVariable == null)
{
throw new QueryCompilationException("The PivotVariable can't be null.");
}
GremlinVariableType pivotType = inputContext.PivotVariable.GetVariableType();
if (pivotType != GremlinVariableType.Vertex &&
pivotType != GremlinVariableType.Table &&
(this.property.Cardinality == GremlinKeyword.PropertyCardinality.list ||
this.property.MetaProperties.Count > 0))
{
throw new QueryCompilationException("Only vertex can use PropertyCardinality.list and have meta properties");
}
inputContext.PivotVariable.Property(inputContext, property);
return(inputContext);
}
protected GremlinTableVariable(GremlinVariableType variableType)
{
VariableType = variableType;
VariableName = GremlinUtil.GenerateTableAlias(VariableType);
}
public GremlinFlatMapVariable(GremlinToSqlContext flatMapContext, GremlinVariableType variableType)
: base(variableType)
{
FlatMapContext = flatMapContext;
}
public GremlinLocalVariable(GremlinToSqlContext localContext, GremlinVariableType variableType)
: base(variableType)
{
this.LocalContext = localContext;
}
public GremlinLocalVariable(GremlinToSqlContext localContext, GremlinVariableType variableType)
: base(variableType)
{
LocalContext = localContext;
LocalContext.HomeVariable = this;
}
public GremlinDerivedTableVariable(GremlinToSqlContext subqueryContext, GremlinVariableType variableType) : base(variableType)
{
this.SubqueryContext = subqueryContext;
}
public GremlinUnionVariable(List <GremlinToSqlContext> unionContextList, GremlinVariableType variableType) : base(variableType)
{
this.UnionContextList = unionContextList;
}
public GremlinCoalesceVariable(List <GremlinToSqlContext> coalesceContextList, GremlinVariableType variableType)
: base(variableType)
{
CoalesceContextList = new List <GremlinToSqlContext>(coalesceContextList);
foreach (var context in coalesceContextList)
{
context.HomeVariable = this;
}
}
public GremlinUnfoldVariable(GremlinVariable unfoldVariable, GremlinVariableType variableType)
: base(variableType)
{
UnfoldVariable = unfoldVariable;
}
public GremlinMapVariable(GremlinToSqlContext mapContext, GremlinVariableType variableType)
: base(variableType)
{
MapContext = mapContext;
}
public GremlinCoalesceVariable(List <GremlinToSqlContext> coalesceContextList, GremlinVariableType variableType)
: base(variableType)
{
this.CoalesceContextList = new List <GremlinToSqlContext>(coalesceContextList);
}