public static ExprAndNode Make2SubNodeAnd()
{
ExprAndNode topNode = new ExprAndNodeImpl();
ExprEqualsNode e1 = new ExprEqualsNodeImpl(false, false);
ExprEqualsNode e2 = new ExprEqualsNodeImpl(false, false);
topNode.AddChildNode(e1);
topNode.AddChildNode(e2);
ExprIdentNode i1_1 = new ExprIdentNodeImpl("IntPrimitive", "s0");
ExprIdentNode i1_2 = new ExprIdentNodeImpl("IntBoxed", "s1");
e1.AddChildNode(i1_1);
e1.AddChildNode(i1_2);
ExprIdentNode i2_1 = new ExprIdentNodeImpl("TheString", "s1");
ExprIdentNode i2_2 = new ExprIdentNodeImpl("TheString", "s0");
e2.AddChildNode(i2_1);
e2.AddChildNode(i2_2);
Validate3Stream(topNode);
return(topNode);
}
/// <summary>Make an expression node that represents the outer join criteria as specified in the on-clause. </summary>
/// <param name="exprEvaluatorContext">context for expression evalauation</param>
/// <returns>expression node for outer join criteria</returns>
public ExprNode MakeExprNode(ExprEvaluatorContext exprEvaluatorContext)
{
ExprNode representativeNode = new ExprEqualsNodeImpl(false, false);
representativeNode.AddChildNode(OptLeftNode);
representativeNode.AddChildNode(OptRightNode);
if (AdditionalLeftNodes == null)
{
TopValidate(representativeNode, exprEvaluatorContext);
return(representativeNode);
}
ExprAndNode andNode = new ExprAndNodeImpl();
TopValidate(representativeNode, exprEvaluatorContext);
andNode.AddChildNode(representativeNode);
representativeNode = andNode;
for (int i = 0; i < AdditionalLeftNodes.Length; i++)
{
ExprEqualsNode eqNode = new ExprEqualsNodeImpl(false, false);
eqNode.AddChildNode(AdditionalLeftNodes[i]);
eqNode.AddChildNode(AdditionalRightNodes[i]);
TopValidate(eqNode, exprEvaluatorContext);
andNode.AddChildNode(eqNode);
}
TopValidate(andNode, exprEvaluatorContext);
return(representativeNode);
}
public ExprNode MakeExprNode(
StatementRawInfo statementRawInfo,
StatementCompileTimeServices compileTimeServices)
{
ExprNode representativeNode = new ExprEqualsNodeImpl(false, false);
representativeNode.AddChildNode(OptLeftNode);
representativeNode.AddChildNode(OptRightNode);
if (AdditionalLeftNodes == null) {
TopValidate(representativeNode, statementRawInfo, compileTimeServices);
return representativeNode;
}
ExprAndNode andNode = new ExprAndNodeImpl();
TopValidate(representativeNode, statementRawInfo, compileTimeServices);
andNode.AddChildNode(representativeNode);
representativeNode = andNode;
for (var i = 0; i < AdditionalLeftNodes.Length; i++) {
ExprEqualsNode eqNode = new ExprEqualsNodeImpl(false, false);
eqNode.AddChildNode(AdditionalLeftNodes[i]);
eqNode.AddChildNode(AdditionalRightNodes[i]);
TopValidate(eqNode, statementRawInfo, compileTimeServices);
andNode.AddChildNode(eqNode);
}
TopValidate(andNode, statementRawInfo, compileTimeServices);
return representativeNode;
}
/// <summary>
/// Returns the list of set-variable assignments under the given node.
/// </summary>
/// <param name="astExprNodeMap">map of AST to expression</param>
/// <returns>list of assignments</returns>
internal static IList <OnTriggerSetAssignment> GetOnTriggerSetAssignments(EsperEPL2GrammarParser.OnSetAssignmentListContext ctx, IDictionary <ITree, ExprNode> astExprNodeMap)
{
if (ctx == null || ctx.onSetAssignment().IsEmpty())
{
return(Collections.GetEmptyList <OnTriggerSetAssignment>());
}
IList <EsperEPL2GrammarParser.OnSetAssignmentContext> ctxs = ctx.onSetAssignment();
IList <OnTriggerSetAssignment> assignments = new List <OnTriggerSetAssignment>(ctx.onSetAssignment().Length);
foreach (var assign in ctxs)
{
ExprNode childEvalNode;
if (assign.eventProperty() != null)
{
var prop = ASTExprHelper.ExprCollectSubNodes(assign.eventProperty(), 0, astExprNodeMap)[0];
var value = ASTExprHelper.ExprCollectSubNodes(assign.expression(), 0, astExprNodeMap)[0];
ExprEqualsNode equals = new ExprEqualsNodeImpl(false, false);
equals.AddChildNode(prop);
equals.AddChildNode(value);
childEvalNode = equals;
}
else
{
childEvalNode = ASTExprHelper.ExprCollectSubNodes(assign, 0, astExprNodeMap)[0];
}
assignments.Add(new OnTriggerSetAssignment(childEvalNode));
}
return(assignments);
}
private ExprEqualsNode MakeNode(Object valueLeft, Type typeLeft, Object valueRight, Type typeRight, bool isNot)
{
ExprEqualsNode equalsNode = new ExprEqualsNodeImpl(isNot, false);
equalsNode.AddChildNode(new SupportExprNode(valueLeft, typeLeft));
equalsNode.AddChildNode(new SupportExprNode(valueRight, typeRight));
SupportExprNodeUtil.Validate(equalsNode);
return(equalsNode);
}
private static ExprEqualsNode MakeEqualsNode(string ident1, string stream1, object value)
{
ExprEqualsNode topNode = new ExprEqualsNodeImpl(false, false);
ExprIdentNode i1_1 = new ExprIdentNodeImpl(ident1, stream1);
var constantNode = new SupportExprNode(value);
topNode.AddChildNode(i1_1);
topNode.AddChildNode(constantNode);
return(topNode);
}
public static ExprEqualsNode MakeEqualsNode()
{
ExprEqualsNode topNode = new ExprEqualsNodeImpl(false, false);
ExprIdentNode i1_1 = new ExprIdentNodeImpl("IntPrimitive");
ExprIdentNode i1_2 = new ExprIdentNodeImpl("IntBoxed");
topNode.AddChildNode(i1_1);
topNode.AddChildNode(i1_2);
return(topNode);
}
public static ExprEqualsNode MakeEqualsNode()
{
ExprEqualsNode topNode = new ExprEqualsNodeImpl(false, false);
ExprIdentNode i1_1 = new ExprIdentNodeImpl("IntPrimitive");
ExprIdentNode i1_2 = new ExprIdentNodeImpl("IntBoxed");
topNode.AddChildNode(i1_1);
topNode.AddChildNode(i1_2);
SupportExprNodeFactory.Validate1StreamBean(topNode);
return(topNode);
}
public ExprEqualsNode MakeEqualsNode()
{
ExprEqualsNode topNode = new ExprEqualsNodeImpl(false, false);
ExprIdentNode i1_1 = new ExprIdentNodeImpl("IntPrimitive", "s0");
ExprIdentNode i1_2 = new ExprIdentNodeImpl("IntBoxed", "s1");
topNode.AddChildNode(i1_1);
topNode.AddChildNode(i1_2);
Validate3Stream(topNode);
return(topNode);
}
internal static UniformPair <int?> ValidateOuterJoinPropertyPair(
StatementContext statementContext,
ExprIdentNode leftNode,
ExprIdentNode rightNode,
int outerJoinCount,
StreamTypeService typeService,
ViewResourceDelegateUnverified viewResourceDelegate)
{
// Validate the outer join clause using an artificial equals-node on top.
// Thus types are checked via equals.
// Sets stream ids used for validated nodes.
ExprNode equalsNode = new ExprEqualsNodeImpl(false, false);
equalsNode.AddChildNode(leftNode);
equalsNode.AddChildNode(rightNode);
var evaluatorContextStmt = new ExprEvaluatorContextStatement(statementContext, false);
try
{
var validationContext = new ExprValidationContext(
typeService,
statementContext.MethodResolutionService, viewResourceDelegate,
statementContext.SchedulingService,
statementContext.VariableService,
statementContext.TableService,
evaluatorContextStmt,
statementContext.EventAdapterService,
statementContext.StatementName,
statementContext.StatementId,
statementContext.Annotations,
statementContext.ContextDescriptor,
statementContext.ScriptingService,
false, false, true, false,
null, false);
ExprNodeUtility.GetValidatedSubtree(ExprNodeOrigin.JOINON, equalsNode, validationContext);
}
catch (ExprValidationException ex)
{
Log.Debug("Validation exception for outer join node=" + ExprNodeUtility.ToExpressionStringMinPrecedenceSafe(equalsNode), ex);
throw new EPStatementException("Error validating expression: " + ex.Message, statementContext.Expression);
}
// Make sure we have left-hand-side and right-hand-side refering to different streams
var streamIdLeft = leftNode.StreamId;
var streamIdRight = rightNode.StreamId;
if (streamIdLeft == streamIdRight)
{
const string message = "Outer join ON-clause cannot refer to properties of the same stream";
throw new EPStatementException("Error validating expression: " + message, statementContext.Expression);
}
// Make sure one of the properties refers to the acutual stream currently being joined
var expectedStreamJoined = outerJoinCount + 1;
if ((streamIdLeft != expectedStreamJoined) && (streamIdRight != expectedStreamJoined))
{
var message = "Outer join ON-clause must refer to at least one property of the joined stream" +
" for stream " + expectedStreamJoined;
throw new EPStatementException("Error validating expression: " + message, statementContext.Expression);
}
// Make sure neither of the streams refer to a 'future' stream
String badPropertyName = null;
if (streamIdLeft > outerJoinCount + 1)
{
badPropertyName = leftNode.ResolvedPropertyName;
}
if (streamIdRight > outerJoinCount + 1)
{
badPropertyName = rightNode.ResolvedPropertyName;
}
if (badPropertyName != null)
{
var message = "Outer join ON-clause invalid scope for property" +
" '" + badPropertyName + "', expecting the current or a prior stream scope";
throw new EPStatementException("Error validating expression: " + message, statementContext.Expression);
}
return(new UniformPair <int?>(streamIdLeft, streamIdRight));
}
protected internal static UniformPair<int> ValidateOuterJoinPropertyPair(
ExprIdentNode leftNode,
ExprIdentNode rightNode,
int outerJoinCount,
StreamTypeService typeService,
ViewResourceDelegateExpr viewResourceDelegate,
StatementRawInfo statementRawInfo,
StatementCompileTimeServices compileTimeServices)
{
// Validate the outer join clause using an artificial equals-node on top.
// Thus types are checked via equals.
// Sets stream ids used for validated nodes.
ExprNode equalsNode = new ExprEqualsNodeImpl(false, false);
equalsNode.AddChildNode(leftNode);
equalsNode.AddChildNode(rightNode);
try {
var validationContext = new ExprValidationContextBuilder(
typeService,
statementRawInfo,
compileTimeServices)
.WithViewResourceDelegate(viewResourceDelegate)
.WithAllowBindingConsumption(true)
.WithIsFilterExpression(true)
.Build();
ExprNodeUtilityValidate.GetValidatedSubtree(ExprNodeOrigin.JOINON, equalsNode, validationContext);
}
catch (ExprValidationException ex) {
throw new ExprValidationException("Failed to validate outer-join expression: " + ex.Message, ex);
}
// Make sure we have left-hand-side and right-hand-side refering to different streams
var streamIdLeft = leftNode.StreamId;
var streamIdRight = rightNode.StreamId;
if (streamIdLeft == streamIdRight) {
var message = "Outer join ON-clause cannot refer to properties of the same stream";
throw new ExprValidationException("Failed to validate outer-join expression: " + message);
}
// Make sure one of the properties refers to the acutual stream currently being joined
var expectedStreamJoined = outerJoinCount + 1;
if (streamIdLeft != expectedStreamJoined && streamIdRight != expectedStreamJoined) {
var message = "Outer join ON-clause must refer to at least one property of the joined stream" +
" for stream " +
expectedStreamJoined;
throw new ExprValidationException("Failed to validate outer-join expression: " + message);
}
// Make sure neither of the streams refer to a 'future' stream
string badPropertyName = null;
if (streamIdLeft > outerJoinCount + 1) {
badPropertyName = leftNode.ResolvedPropertyName;
}
if (streamIdRight > outerJoinCount + 1) {
badPropertyName = rightNode.ResolvedPropertyName;
}
if (badPropertyName != null) {
var message = "Outer join ON-clause invalid scope for property" +
" '" +
badPropertyName +
"', expecting the current or a prior stream scope";
throw new ExprValidationException("Failed to validate outer-join expression: " + message);
}
return new UniformPair<int>(streamIdLeft, streamIdRight);
}