public object Translate(TranslationContext context, ASTNode node)
{
if (DataTypes.Equal(node.ResultType, DataTypes.DateTimeInterval))
{
var result = new CREFModel.DateRange();
var beginOpen = Convert.ToBoolean(node.GetAttribute <string>("beginOpen"));
var endOpen = Convert.ToBoolean(node.GetAttribute <string>("endOpen"));
if (beginOpen || endOpen)
{
throw new NotSupportedException("Translation for open intervals is not supported because CREF only supports closed interval values.");
}
foreach (var child in node.Children)
{
result.Items.Add(context.TranslateNode(child));
}
return(result);
}
else
{
throw new NotSupportedException("Translation for intervals with point types other than Timestamp is not supported because CREF does not support generic interval values.");
}
}
private Model.Statement TranslateExpressionDef(SQLTranslationContext context, string artifactName, ExpressionDef expressionDef)
{
var result = new SQLModel.CreateViewStatement();
result.ViewName = context.GetExpressionObjectName(String.Format("{0}.{1}", artifactName, expressionDef.Name));
var translatedExpression = context.TranslateNode(expressionDef.Expression);
if (DataTypes.Equal(expressionDef.Expression.ResultType, DataTypes.Boolean))
{
translatedExpression = SQLTranslationUtilities.PromoteBooleanValuedExpression(translatedExpression);
}
result.Expression = SQLTranslationUtilities.EnsureSelectExpression(translatedExpression);
return(result);
}
public object Translate(TranslationContext context, ASTNode node)
{
var result = new CREFModel.ValueExpression();
if (DataTypes.Equal(node.ResultType, DataTypes.String))
{
result.Type = Model.ValueType.String;
result.TypeSpecified = true;
result.Value = node.GetAttribute <string>("value");
}
else if (DataTypes.Equal(node.ResultType, DataTypes.Integer))
{
result.Type = Model.ValueType.Int32;
result.TypeSpecified = true;
result.Value = node.GetAttribute <string>("value");
}
else if (DataTypes.Equal(node.ResultType, DataTypes.Boolean))
{
result.Type = Model.ValueType.Boolean;
result.TypeSpecified = true;
result.Value = node.GetAttribute <string>("value");
}
else if (DataTypes.Equal(node.ResultType, DataTypes.Decimal))
{
result.Type = Model.ValueType.Decimal;
result.TypeSpecified = true;
result.Value = node.GetAttribute <string>("value");
}
else if (DataTypes.Equal(node.ResultType, DataTypes.DateTime))
{
result.Type = Model.ValueType.Date;
result.TypeSpecified = true;
result.Value = node.GetAttribute <string>("value"); // TODO: Convert to format expected by CREF
}
else
{
throw new NotSupportedException(String.Format("Unsupported literal type: {0}.", node.ResultType.Name));
}
return(result);
}
public IEnumerable <VerificationException> Verify(Artifact artifact)
{
// Parameters must be validated without access to parameter definitions, or expression definitions
var initialContext = new VerificationContext(artifact.Models, null, null, null);
// Resolve parameter types and verify default expressions
foreach (var parameter in artifact.Parameters)
{
try
{
parameter.ParameterType = initialContext.ResolveType(parameter.TypeName);
if (parameter.Default != null)
{
Verifier.Verify(initialContext, parameter.Default);
initialContext.VerifyType(parameter.Default.ResultType, parameter.ParameterType);
}
}
catch (Exception e)
{
initialContext.ReportMessage(new VerificationException(String.Format("Exceptions occurred verifying parameter {0}.", parameter.Name), e), null);
}
}
var context = new VerificationContext(artifact.Models, artifact.Parameters, artifact.Expressions, initialContext.Messages);
// Verify expressions
foreach (var expression in artifact.Expressions)
{
// If the result type is already set, this expression ref has already been resolved.
if (expression.Expression.ResultType == null)
{
Verifier.Verify(context, expression.Expression);
}
}
// Verify conditions
foreach (var condition in artifact.Conditions)
{
Verifier.Verify(context, condition);
if (!DataTypes.Equal(condition.ResultType, DataTypes.Boolean))
{
context.ReportMessage(new InvalidOperationException("Condition must evaluate to a value of type boolean."), condition);
}
}
// Verify trigger expressions
foreach (var trigger in artifact.Triggers)
{
VerifyExpressionNodes(context, trigger);
}
// Verify action conditions
if (artifact.ActionGroup != null)
{
var containers = new Dictionary <string, ParameterDef>();
// Verify documentation template conditions and binding expressions
VerifyResponseBindings(context, artifact.ActionGroup, containers);
foreach (var parameter in containers.Values)
{
context.AddParameterDef(parameter);
}
VerifyExpressionNodes(context, artifact.ActionGroup);
}
return(context.Messages);
}
