public static bool HasPropertyExpression(
this DbModificationClause modificationClause)
{
var setClause = modificationClause as DbSetClause;
return(setClause?.Property is DbPropertyExpression);
}
public static bool IsFor(
this DbModificationClause clause,
string property)
{
return(clause.HasPropertyExpression() &&
clause.Property().Property.Name == property);
}
public static DbModificationClause UpdateIfMatch(
this DbModificationClause clause,
string property,
DbExpression value)
{
return(clause.IsFor(property)
? DbExpressionBuilder.SetClause(clause.Property(), value)
: clause);
}
public static DbModificationClause UpdateIfMatch(this DbModificationClause clause, string property, DbExpression value)
{
var propertyExpression = (DbPropertyExpression)((DbSetClause)clause).Property;
if (propertyExpression.Property.Name == property)
{
return(DbExpressionBuilder.SetClause(propertyExpression, value));
}
return(clause);
}
public static bool HasPropertyExpression(
this DbModificationClause modificationClause)
{
var setClause = modificationClause as DbSetClause;
if (setClause == null)
{
return(false);
}
return(setClause.Property is DbPropertyExpression);
}
private static bool IgnoreProperty(DbModificationClause clause)
{
string propertyName = (((clause as DbSetClause)?.Property as DbPropertyExpression)?.Property as EdmProperty)
?.Name;
if (propertyName == null)
{
return(false);
}
return(_namesToIgnore.Any(n => propertyName.Contains(n)));
}
public static DbPropertyExpression Property(
this DbModificationClause clause)
{
if (clause.HasPropertyExpression())
{
var setClause = (DbSetClause)clause;
return((DbPropertyExpression)setClause.Property);
}
const string message = "clause does not contain property expression. " +
"Use HasPropertyExpression method to check if it has property expression.";
throw new Exception(message);
}
