private void WriteInstanceUpdates(SqlDumpWriter sdw, DataSetInstance inst)
{
foreach (var r in inst.Class.References)
{
if (!r.BackReference) continue;
if (r.BaseClass.SimplePkCol == null) continue;
int colord = inst.Class.ColumnOrdinals[r.BindingColumn];
if (inst.Values[colord] == null || inst.Values[colord] == DBNull.Value) continue;
int? rvar = GetReferenceVariable(inst.Values[colord].ToString(), r.BaseClass, r.ReferencedClass, r.BindingColumn);
if (rvar == null) continue;
sdw.Write("update [{0}] set [{1}]=", r.BaseClass.TableName, r.BindingColumn);
sdw.WriteVar(rvar.Value);
sdw.Write(" where [{0}]=", r.BaseClass.SimplePkCol);
sdw.WriteVar(inst.IdVariable.Value);
sdw.EndCommand();
}
//foreach (var fr in inst.Class.FulltextReferences)
//{
// int colord = inst.Class.ColumnOrdinals[fr.BindingColumn];
// var re = new Regex(fr.Regex);
// string val = inst.Values[colord].ToString();
// sdw.SuspendVariables();
// val = val.Replace("'", "''");
// val = re.Replace(val, new FulltextVariableRefMatchReplacer { fr = fr, sdw = sdw, ctx = this }.Replace);
// sdw.Write("update [{0}] set [{1}]=N'{2}' where [{3}]=", fr.BaseClass.TableName, fr.BindingColumn, val, fr.BaseClass.IdentityColumn);
// sdw.WriteVar(inst.IdVariable.Value);
// sdw.ResumeVariables();
// sdw.EndCommand();
//}
}
private void WriteInstance(SqlDumpWriter sdw, DataSetInstance inst)
{
int idVariable = ReserveVariable();
if (inst.Class.ConditionalInsertFields != null)
{
var cls = inst.Class;
var sb = new StringBuilder();
sb.Append("(");
sb.AppendFormat("select top(1) tmain.[{0}] from [{1}] tmain ", cls.SimplePkCol, cls.TableName);
var exprs = new List<string>();
var rewr = new SqlRewriter(cls.TableName, this);
for (int i = 0; i < cls.ConditionalInsertFields.Length; i++) exprs.Add(rewr.Rewrite(cls.ConditionalInsertFields[i]));
rewr.WriteJoins(sb);
sb.Append(" where ");
bool wasCond = false;
for (int i = 0; i < exprs.Count; i++)
{
if (wasCond) sb.Append(" and ");
sb.AppendFormat("{0}=N'{1}'", exprs[i], inst.Values[cls.ConditionalInsertFieldIndexes[i]]);
wasCond = true;
}
sb.Append(")");
inst.IdVariable = AssignVariable(sdw, sb.ToString(), idVariable);
sdw.EndCommand();
sdw.Write("if ({0} is null) begin\n", sdw.GetVarExpr(inst.IdVariable.Value));
}
sdw.Write("insert into [{0}] (", inst.Class.TableName);
WriteColumnList(inst.Class, sdw.CurrentCommandBuilder);
sdw.Write(") values (");
bool was = false;
for (int i = 0; i < inst.Class.Columns.Length; i++)
{
if (inst.Class.Columns[i] == inst.Class.IdentityColumn) continue;
if (inst.Class.TargetTable.Columns[i].ComputedExpression != null) continue;
if (was) sdw.Write(",");
FormulaDefinition formula = null;
if (inst.Class.ChangedColumns.ContainsKey(inst.Class.Columns[i])) formula = inst.Class.ChangedColumns[inst.Class.Columns[i]];
if (formula != null) formula.WritePrefix(sdw.CurrentCommandBuilder);
var r = inst.Class.GetReference(i);
//var fr = inst.Class.GetFulltextReference(i);
//if (fr != null)
//{
// sdw.Write(fr.EmptyValueExpression);
//}
//else
if (r != null && !r.ReferencedClass.KeepKey)
{
if (r.ReferencedClass.LookupDefined)
{
if (inst.Values[i] == null || inst.Values[i] == DBNull.Value)
{
sdw.Write("NULL");
}
else
{
string refid = inst.Values[i].ToString();
if (r.ReferencedClass.LookupVariables.ContainsKey(refid))
{
sdw.WriteVar(r.ReferencedClass.LookupVariables[refid]);
}
else
{
sdw.Write("NULL");
}
}
}
else
{
if (!KeepUndefinedReferences)
{
if (r.ReferencedClass.IdentityColumn == null)
{
int ord = r.BaseClass.ColumnOrdinals[r.BindingColumn];
if (r.BaseClass.AllInstances.Select(x => x.Values[ord]).Any(x => x != null))
{
throw new Exception(String.Format("DBSH-00125 Lookup or target identity must be defined on table {0} because of reference from {1}", r.ReferencedClass.TableName,
r.BaseClass.TableName));
}
}
}
if (r.BackReference)
{
sdw.Write("NULL");
}
else
{
if (inst.Values[i] == null || inst.Values[i] == DBNull.Value)
{
sdw.Write("NULL");
}
else
{
int? rvar = GetReferenceVariable(inst.Values[i].ToString(), r.BaseClass, r.ReferencedClass, r.BindingColumn);
if (rvar == null)
{
if (KeepUndefinedReferences)
{
WriteValue(sdw.CurrentCommandBuilder, inst.Values[i]);
}
else
{
sdw.Write("NULL");
}
}
else
{
sdw.WriteVar(rvar.Value);
}
}
}
}
}
else
{
//object overr;
//if (inst.Class.Overrides.TryGetValue(inst.Class.Columns[i], out overr))
//{
// if (overr is RawOverrides)
// sdw.CurrentCommandBuilder.Append(((RawOverrides)overr).RawValue);
// else
// WriteValue(sdw.CurrentCommandBuilder, overr);
//}
//else
//{
// WriteValue(sdw.CurrentCommandBuilder, inst.Values[i]);
//}
WriteValue(sdw.CurrentCommandBuilder, inst.Values[i]);
}
if (formula != null) formula.WritePostfix(sdw.CurrentCommandBuilder);
was = true;
}
sdw.Write(")");
if (inst.RequiredIdentity || inst.Class.ConditionalInsertFields != null)
{
if (inst.Class.IdentityColumn != null)
{
inst.IdVariable = AssignVariable(sdw, "SCOPE_IDENTITY()", idVariable, true);
}
else
{
if (inst.Class.SimplePkCol != null)
{
inst.IdVariable = AssignVariable(sdw, inst.Values[inst.Class.SimplePkColIndex].ToString(), idVariable, true);
}
}
}
if (inst.Class.ConditionalInsertFields != null)
{
sdw.Write("end\n");
}
sdw.EndCommand();
}
public DataSetInstance AddRecord(object[] values)
{
var ent = new DataSetInstance(this, values);
if (SimplePkColIndex >= 0)
{
if (InstancesBySimpleKey.ContainsKey(ent.SimpleKeyValue)) return null;
InstancesBySimpleKey[ent.SimpleKeyValue] = ent;
}
if (ComplexPkColIndexes != null)
{
var sb = new StringBuilder();
foreach (int index in ComplexPkColIndexes)
{
sb.Append(ent.Values[index]);
sb.Append("###");
}
string key = sb.ToString();
if (InstancesByComplexPk.ContainsKey(key)) return null;
InstancesByComplexPk[key] = ent;
}
AllInstances.Add(ent);
return ent;
}
