/*
* /// <summary>
* /// Replaces embedded property references in the string with sql cocde.
* /// </summary>
* /// <param name="withEmbedded">Expression to be replaced.</param>
* /// <param name="idString">Id to use when reporting errors.</param>
* /// <param name="vd">Validation delegate for error reporting.</param>
* /// <returns>String with embedded references replaced.</returns>
* private string PrepareExpression(string withEmbedded, string idString, ParserValidationDelegate vd)
* {
* string checkExpression = withEmbedded;
* string retVal = String.Empty;
* int leftBrace = 0;
* int startPos = 0;
* for(leftBrace=checkExpression.IndexOf("{", startPos); startPos >=0; leftBrace=checkExpression.IndexOf("{", startPos))
* {
* if (leftBrace == -1)
* {
* // No more strings to replace.
* retVal += checkExpression.Substring(startPos, checkExpression.Length - startPos);
* break;
* }
* else
* {
* // Concatenate portion of string without embedded references.
* retVal += checkExpression.Substring(startPos, leftBrace - startPos);
* }
* int rightBrace = checkExpression.IndexOf("}", leftBrace);
* if (rightBrace == -1)
* {
* if (vd != null)
* {
* vd(ParserValidationArgs.NewError("The " + idString + " has a left brace({} with no corresonding right brace(}}"));
* }
* return "";
* }
*
* // Isolate the property reference.
* string expression = checkExpression.Substring(leftBrace+1, rightBrace - leftBrace - 1);
*
* // Create list of property references seen to check for circular references.
* ArrayList repeList = new ArrayList();
*
* string[] parts = expression.Split('.');
* string leftPart = "";
* string rightPart = "";
* if (parts.Length == 1)
* {
* // Default the left part to this report extraction if not specified.
* leftPart = this.Name;
* rightPart = parts[0];
* }
* else if (parts.Length == 2)
* {
* leftPart = parts[0];
* rightPart = parts[1];
* }
* else
* {
* if (vd != null)
* {
* vd(ParserValidationArgs.NewError("The expression " + expression + " in the " + idString + " does not contain exactly one dot(.)."));
* }
* return "";
* }
*
*
* if (leftPart.ToLower() == this.Name.ToLower())
* {
* // Refers to a property in this report extraction.
* ReportExtractionPropertyElement repe = this.FindComputedFieldByName(rightPart);
* if (repe != null)
* {
* // Refers to a computed property. Check for circular references.
* foreach(ReportExtractionPropertyElement repel in repeList)
* {
* if(repel.Name == repe.Name)
* {
* if (vd != null)
* {
* vd(ParserValidationArgs.NewError("The expression " + expression + " in the " + idString + " has a circular reference."));
* }
* return "";
* }
* }
*
* // Add in the expansion of this property.e
* retVal += "(" + repe.GetSqlExpression() + ")";
* }
* else
* {
* EntityReferencePropertyElement pre = this.FindReferenceFieldByName(rightPart);
* if (pre != null)
* {
* // Refers to a property reference. Get the expression.
* retVal += pre.GetSqlExpression();
* }
* else
* {
* if (vd != null)
* {
* vd(ParserValidationArgs.NewError("The expression " + expression + " in the " + idString + " refers to a property in the report extraction that does not exist."));
* }
* return "";
* }
* }
* }
* else
* {
* EntityReferenceElement er = FindEntityReferenceByName(leftPart);
* if (er == null)
* {
* if (vd != null)
* {
* vd(ParserValidationArgs.NewError("The expression " + expression + " in the " + idString + " refers to an entity that is not an entity reference in the extraction nor the extraction itself."));
* }
* return "";
* }
* else
* {
* // Refers to an entity reference.
* EntityReferencePropertyElement pre = er.FindFieldBySqlAlias(rightPart);
* if (pre != null)
* {
* // Refers to a property reference in the entity.
* retVal += pre.GetSqlExpression();
* }
* else
* {
* PropertyElement p = er.Entity.FindFieldByName(rightPart);
* if (p != null)
* {
* // Refers to a property in the entity referenced that is not in the property referenced.
* retVal += "[" + er.Name + "].[" + p.Column.Name + "]";
* }
* else
* {
* if (vd != null)
* {
* vd(ParserValidationArgs.NewError("The expression " + expression + " in the " + idString + " refers to a property that is not in the referenced entity reference nor it's associated entity."));
* }
* else
* {
* return "";
* }
* }
* }
* }
* }
*
* startPos = rightBrace + 1;
* }
*
* return retVal;
* }*/
public string GetExpressionSubstitution(string substitutionExpression, string idString, ParserValidationDelegate vd)
{
// Create list of property references seen to check for circular references.
ArrayList repeList = new ArrayList();
string[] parts = substitutionExpression.Split('.');
string leftPart = "";
string rightPart = "";
if (parts.Length == 1)
{
// Default the left part to this report extraction if not specified.
leftPart = this.Name;
rightPart = parts[0];
}
else if (parts.Length == 2)
{
leftPart = parts[0];
rightPart = parts[1];
}
else
{
if (vd != null)
{
vd(ParserValidationArgs.NewError("The expression " + substitutionExpression + " in the " + idString + " does not contain exactly one dot(.)."));
}
return("");
}
if (leftPart.ToLower() == this.Name.ToLower())
{
// Refers to a property in this report extraction.
PropertyElement repe = this.FindComputedFieldByName(rightPart);
if (repe != null)
{
// Refers to a computed property. Check for circular references.
foreach (PropertyElement repel in repeList)
{
if (repel.Name == repe.Name)
{
if (vd != null)
{
vd(ParserValidationArgs.NewError("The expression " + substitutionExpression + " in the " + idString + " has a circular reference."));
}
return("");
}
}
// Add in the expansion of this property.e
return("(" + repe.GetSqlExpression() + ")");
}
else
{
PropertyElement pre = this.FindReferenceFieldByName(rightPart);
if (pre != null)
{
// Refers to a property reference. Get the expression.
return(pre.GetSqlExpression());
}
else
{
if (vd != null)
{
vd(ParserValidationArgs.NewError("The expression " + substitutionExpression + " in the " + idString + " refers to a property in the report extraction that does not exist."));
}
return("");
}
}
}
else
{
EntityReferenceElement er = FindEntityReferenceByName(leftPart);
if (er == null)
{
if (vd != null)
{
vd(ParserValidationArgs.NewError("The expression " + substitutionExpression + " in the " + idString + " refers to an entity that is not an entity reference in the extraction nor the extraction itself."));
}
return("");
}
else
{
// Refers to an entity reference.
PropertyElement pre = er.FindFieldBySqlAlias(rightPart);
if (pre != null)
{
// Refers to a property reference in the entity.
return(pre.GetSqlExpression());
}
else
{
PropertyElement p = er.Entity.FindFieldByName(rightPart);
if (p != null)
{
// Refers to a property in the entity referenced that is not in the property referenced.
return("[" + er.Name + "].[" + p.Column.Name + "]");
}
else
{
if (vd != null)
{
vd(ParserValidationArgs.NewError("The expression " + substitutionExpression + " in the " + idString + " refers to a property that is not in the referenced entity reference nor it's associated entity."));
}
return("");
}
}
}
}
}
