public override void VisitPrimaryKey(PrimaryKeyModel model)
{
if (model.Property.PropertyType.GetCustomAttributes(typeof(CompositeKeyAttribute), false).Length > 0)
{
DoNaturalKey(model);
}
else
{
DoSurrogateKey(model);
}
}
/// <summary>
/// Perform the check that the property value is unqiue in the table
/// </summary>
/// <param name="instance"></param>
/// <param name="fieldValue"></param>
/// <returns><c>true</c> if the field is OK</returns>
public override bool IsValid(object instance, object fieldValue)
{
Type instanceType = instance.GetType();
ActiveRecordModel model = ActiveRecordBase.GetModel(instance.GetType());
while(model != null)
{
if (model.PrimaryKey != null)
{
pkModel = model.PrimaryKey;
}
model = model.Parent;
}
if (pkModel == null)
{
throw new ValidationFailure("We couldn't find the primary key for " + instanceType.FullName +
" so we can't ensure the uniqueness of any field. Validatior failed");
}
IsUniqueValidator.fieldValue = fieldValue;
SessionScope scope = null;
FlushMode? originalMode = null;
if (SessionScope.Current == null /*||
SessionScope.Current.ScopeType != SessionScopeType.Transactional*/)
{
scope = new SessionScope();
}
else
{
originalMode = ActiveRecordBase.holder.CreateSession(instanceType).FlushMode;
ActiveRecordBase.holder.CreateSession(instanceType).FlushMode = FlushMode.Never;
}
try
{
return (bool) ActiveRecordMediator.Execute(instanceType, CheckUniqueness, instance);
}
finally
{
if (scope != null)
{
scope.Dispose();
}
if (originalMode != null)
{
ActiveRecordBase.holder.CreateSession(instanceType).FlushMode = originalMode ?? FlushMode.Commit;
}
}
}
/// <summary>
/// Visits the primary key.
/// </summary>
/// <remarks>
/// Infer column name and the reverse property if using [OneToOne]
/// </remarks>
/// <param name="model">The model.</param>
public override void VisitPrimaryKey(PrimaryKeyModel model)
{
if (model.PrimaryKeyAtt.Column == null)
{
model.PrimaryKeyAtt.Column = model.Property.Name;
}
// Append column prefix
model.PrimaryKeyAtt.Column = columnPrefix + model.PrimaryKeyAtt.Column;
if (model.PrimaryKeyAtt.Generator == PrimaryKeyType.Foreign)
{
// Let's see if we are an OneToOne
if (currentModel.OneToOnes.Count != 0)
{
// Yes, set the one to one as param
OneToOneModel oneToOne = currentModel.OneToOnes[0];
String param = "property=" + oneToOne.Property.Name;
if (model.PrimaryKeyAtt.Params == null)
{
model.PrimaryKeyAtt.Params = param;
}
else
{
model.PrimaryKeyAtt.Params += "," + param;
}
}
}
else if (model.PrimaryKeyAtt.Generator == PrimaryKeyType.Custom)
{
if (model.PrimaryKeyAtt.CustomGenerator == null)
{
throw new ActiveRecordException(String.Format(
"A type defined that its primary key would use a custom generator, " +
"but apparently forgot to define the custom generator using PrimaryKeyAttribute.CustomGenerator property. " +
"Check type {0}", currentModel.Type.FullName));
}
if (!typeof(IIdentifierGenerator).IsAssignableFrom(model.PrimaryKeyAtt.CustomGenerator))
{
throw new ActiveRecordException(
"The custom generator associated with the PK for the type " + currentModel.Type.FullName +
"does not implement interface NHibernate.Id.IIdentifierGenerator");
}
}
}
public override String ToString()
{
Framework.Internal.ActiveRecordModel model = GetModel(GetType());
if (model == null || model.Ids.Count != 1)
{
return(base.ToString());
}
Framework.Internal.PrimaryKeyModel pkModel = (Framework.Internal.PrimaryKeyModel)model.Ids[0];
object pkVal = pkModel.Property.GetValue(this, null);
return(base.ToString() + "#" + pkVal);
}
private void DoNaturalKey(PrimaryKeyModel model)
{
CompositeKeyAttribute att = model.Property.PropertyType.GetCustomAttributes(typeof(CompositeKeyAttribute), false)[0] as CompositeKeyAttribute;
string unsavedVal = att.UnsavedValue;
if (unsavedVal == null)
{
unsavedVal = "none";
}
AppendF("<composite-id {0} {1} {2} {3}>",
MakeAtt("name", model.Property.Name),
MakeClassAtt(model.Property.PropertyType),
WriteIfNonNull("unsaved-value", unsavedVal),
MakeAtt("access", att.AccessString));
Ident();
PropertyInfo[] keyProps = model.Property.PropertyType.GetProperties();
foreach (PropertyInfo keyProp in keyProps)
{
KeyPropertyAttribute keyPropAttr = keyProp.GetCustomAttributes(typeof(KeyPropertyAttribute), false)[0] as KeyPropertyAttribute;
if (keyPropAttr.Column == null)
{
keyPropAttr.Column = keyProp.Name;
}
AppendF("<key-property {0} {1} {2} {3} {4} {5} {6} {7} {8} {9} {10} />",
MakeAtt("name", keyProp.Name),
MakeAtt("access", keyPropAttr.AccessString),
MakeAtt("column", keyPropAttr.Column),
MakeTypeAtt(keyProp.PropertyType, keyPropAttr.ColumnType),
WriteIfNotZero("length", keyPropAttr.Length),
WriteIfNonNull("unsaved-value", keyPropAttr.UnsavedValue),
WriteIfTrue("not-null", keyPropAttr.NotNull),
WriteIfTrue("unique", keyPropAttr.Unique),
WriteIfFalse("insert", keyPropAttr.Insert),
WriteIfFalse("update", keyPropAttr.Update),
WriteIfNonNull("formula", keyPropAttr.Formula));
}
Dedent();
AppendF("</composite-id>");
}
private object ObtainPrimaryKeyValue(ActiveRecordModel model, CompositeNode node, String prefix,
out PrimaryKeyModel pkModel)
{
pkModel = ObtainPrimaryKey(model);
var pkPropName = pkModel.Property.Name;
var idNode = node.GetChildNode(pkPropName);
if (idNode == null) return null;
if (idNode != null && idNode.NodeType != NodeType.Leaf)
{
throw new BindingException("Expecting leaf node to contain id for ActiveRecord class. " +
"Prefix: {0} PK Property Name: {1}", prefix, pkPropName);
}
var lNode = (LeafNode) idNode;
if (lNode == null)
{
throw new BindingException("ARDataBinder autoload failed as element {0} " +
"doesn't have a primary key {1} value", prefix, pkPropName);
}
bool conversionSuc;
return Converter.Convert(pkModel.Property.PropertyType, lNode.ValueType, lNode.Value, out conversionSuc);
}
/// <summary>
/// Visits the primary key.
/// </summary>
/// <remarks>
/// Infer column name and the reverse property if using [OneToOne]
/// </remarks>
/// <param name="model">The model.</param>
public override void VisitPrimaryKey(PrimaryKeyModel model)
{
if (model.PrimaryKeyAtt.Column == null)
{
model.PrimaryKeyAtt.Column = model.Property.Name;
}
// Append column prefix
model.PrimaryKeyAtt.Column = columnPrefix + model.PrimaryKeyAtt.Column;
if (model.PrimaryKeyAtt.Generator == PrimaryKeyType.Foreign)
{
// Let's see if we are an OneToOne
if (currentModel.OneToOnes.Count != 0)
{
// Yes, set the one to one as param
OneToOneModel oneToOne = currentModel.OneToOnes[0];
String param = "property=" + oneToOne.Property.Name;
if (model.PrimaryKeyAtt.Params == null)
{
model.PrimaryKeyAtt.Params = param;
}
else
{
model.PrimaryKeyAtt.Params += "," + param;
}
}
}
else if (model.PrimaryKeyAtt.Generator == PrimaryKeyType.Custom)
{
if (model.PrimaryKeyAtt.CustomGenerator == null)
{
throw new ActiveRecordException(String.Format(
"A type defined that its primary key would use a custom generator, " +
"but apparently forgot to define the custom generator using PrimaryKeyAttribute.CustomGenerator property. " +
"Check type {0}", currentModel.Type.FullName));
}
if (!typeof (IIdentifierGenerator).IsAssignableFrom(model.PrimaryKeyAtt.CustomGenerator))
{
throw new ActiveRecordException(
"The custom generator associated with the PK for the type " + currentModel.Type.FullName +
"does not implement interface NHibernate.Id.IIdentifierGenerator");
}
}
}
/// <summary>
/// Visits the primary key.
/// </summary>
/// <param name="model">The model.</param>
public override void VisitPrimaryKey(PrimaryKeyModel model)
{
String unsavedVal = model.PrimaryKeyAtt.UnsavedValue;
if (unsavedVal == null)
{
if (model.Property.PropertyType.IsPrimitive && model.Property.PropertyType != typeof(String))
{
unsavedVal = "0";
}
else if (model.Property.PropertyType == typeof(Guid))
{
unsavedVal = Guid.Empty.ToString();
}
}
AppendF("<id{0}{1}{2}{3}{4}{5}>",
MakeAtt("name", model.Property.Name),
MakeAtt("access", model.PrimaryKeyAtt.AccessString),
MakeAtt("column", model.PrimaryKeyAtt.Column),
MakeTypeAtt(model.Property.PropertyType, model.PrimaryKeyAtt.ColumnType),
WriteIfNotZero("length", model.PrimaryKeyAtt.Length),
WriteIfNonNull("unsaved-value", unsavedVal));
Ident();
String className = null;
switch(model.PrimaryKeyAtt.Generator)
{
case PrimaryKeyType.Identity:
case PrimaryKeyType.Sequence:
case PrimaryKeyType.HiLo:
case PrimaryKeyType.SeqHiLo:
case PrimaryKeyType.Guid:
case PrimaryKeyType.Native:
case PrimaryKeyType.Assigned:
case PrimaryKeyType.Foreign:
case PrimaryKeyType.Increment:
className = model.PrimaryKeyAtt.Generator.ToString().ToLower(CultureInfo.InvariantCulture);
break;
case PrimaryKeyType.GuidComb:
className = "guid.comb";
break;
case PrimaryKeyType.UuidHex:
className = "uuid.hex";
break;
case PrimaryKeyType.UuidString:
className = "uuid.string";
break;
case PrimaryKeyType.Counter:
className = "vm";
break;
case PrimaryKeyType.Custom:
className = MakeTypeName(model.PrimaryKeyAtt.CustomGenerator);
break;
}
AppendF("<generator{0}>", MakeAtt("class", className));
if (model.PrimaryKeyAtt.SequenceName != null)
{
Ident();
AppendF("<param name=\"sequence\">{0}</param>", model.PrimaryKeyAtt.SequenceName);
Dedent();
}
if (model.PrimaryKeyAtt.Params != null)
{
Ident();
String[] paras = model.PrimaryKeyAtt.Params.Split(',');
foreach(String param in paras)
{
int eqIndex = param.IndexOf("=");
//need to handle parameters that may contains =, so we will take into account only the first one
string paramName = param.Substring(0, eqIndex);
string paramValue = param.Substring(eqIndex+1);
AppendF("<param name=\"{0}\">{1}</param>", paramName, paramValue);
}
Dedent();
}
AppendF("</generator>");
Dedent();
Append("</id>");
}
public ARLoaderEnumerator(Type arType, IEnumerable keys)
: base(keys.GetEnumerator())
{
this.pkModel = ActiveRecordModel.GetModel(arType).PrimaryKey;
this.arType = arType;
}
public virtual void VisitPrimaryKey(PrimaryKeyModel model)
{
}
/// <summary>
/// Visits the primary key.
/// </summary>
/// <param name="model">The model.</param>
public virtual void VisitPrimaryKey(PrimaryKeyModel model)
{
}
private static string GuessGeneratorClassName(PrimaryKeyModel model)
{
if (model.Property.PropertyType == typeof(Guid))
return "guid.comb";
if (model.Property.PropertyType == typeof(string))
return "assigned";
// NOTE: perhaps this could be extended to some other
return "native";
}
private static string GetGeneratorClassName(PrimaryKeyModel model)
{
if (model.PrimaryKeyAtt.TypeSpecified == false)
{
return GuessGeneratorClassName(model);
}
String className = null;
switch (model.PrimaryKeyAtt.Generator)
{
case PrimaryKeyType.Identity:
case PrimaryKeyType.Sequence:
case PrimaryKeyType.HiLo:
case PrimaryKeyType.SeqHiLo:
case PrimaryKeyType.Guid:
case PrimaryKeyType.Native:
case PrimaryKeyType.Assigned:
case PrimaryKeyType.Foreign:
case PrimaryKeyType.Increment:
className = model.PrimaryKeyAtt.Generator.ToString().ToLower(CultureInfo.InvariantCulture);
break;
case PrimaryKeyType.GuidComb:
className = "guid.comb";
break;
case PrimaryKeyType.UuidHex:
className = "uuid.hex";
break;
case PrimaryKeyType.UuidString:
className = "uuid.string";
break;
case PrimaryKeyType.Counter:
className = "vm";
break;
case PrimaryKeyType.Custom:
className = MakeTypeName(model.PrimaryKeyAtt.CustomGenerator);
break;
}
return className;
}
/// <summary>
/// Visits the primary key.
/// </summary>
/// <param name="model">The model.</param>
public override void VisitPrimaryKey(PrimaryKeyModel model)
{
String unsavedVal = model.PrimaryKeyAtt.UnsavedValue;
if (unsavedVal == null)
{
if (model.Property.PropertyType.IsPrimitive && model.Property.PropertyType != typeof(String))
{
unsavedVal = "0";
}
else if (model.Property.PropertyType == typeof(Guid))
{
unsavedVal = Guid.Empty.ToString();
}
}
AppendStartTag("id",
MakeAtt("name", model.Property.Name),
MakeAtt("access", model.PrimaryKeyAtt.AccessString),
MakeAtt("column", model.PrimaryKeyAtt.Column),
MakeTypeAtt(model.Property.PropertyType, model.PrimaryKeyAtt.ColumnType),
WriteIfNotZero("length", model.PrimaryKeyAtt.Length),
WriteIfNonNull("unsaved-value", unsavedVal));
Ident();
string className = GetGeneratorClassName(model);
AppendStartTag("generator", MakeAtt("class", className));
if (model.PrimaryKeyAtt.SequenceName != null)
{
Ident();
AppendF("<param name=\"sequence\">{0}</param>", model.PrimaryKeyAtt.SequenceName);
Dedent();
}
if (model.PrimaryKeyAtt.Params != null)
{
Ident();
String[] paras = model.PrimaryKeyAtt.Params.Split(',');
foreach(String param in paras)
{
int eqIndex = param.IndexOf("=");
//need to handle parameters that may contains =, so we will take into account only the first one
string paramName = param.Substring(0, eqIndex);
string paramValue = param.Substring(eqIndex+1);
AppendF("<param name=\"{0}\">{1}</param>", paramName, paramValue);
}
Dedent();
}
AppendF("</generator>");
Dedent();
Append("</id>");
}
private void DoSurrogateKey(PrimaryKeyModel model)
{
String unsavedVal = model.PrimaryKeyAtt.UnsavedValue;
if (unsavedVal == null)
{
if (model.Property.PropertyType.IsPrimitive && model.Property.PropertyType != typeof(String))
{
unsavedVal = "0";
}
else if (model.Property.PropertyType != typeof(Guid))
{
// Nasty guess, but for 99.98% of situations it will be OK
unsavedVal = "";
}
}
AppendF("<id {0} {1} {2} {3} {4} {5}>",
MakeAtt("name", model.Property.Name),
MakeAtt("access", model.PrimaryKeyAtt.AccessString),
MakeAtt("column", model.PrimaryKeyAtt.Column),
MakeTypeAtt(model.Property.PropertyType, model.PrimaryKeyAtt.ColumnType),
WriteIfNotZero("length", model.PrimaryKeyAtt.Length),
WriteIfNonNull("unsaved-value", unsavedVal));
Ident();
if (model.PrimaryKeyAtt.Generator != PrimaryKeyType.None)
{
String className = null;
switch (model.PrimaryKeyAtt.Generator)
{
case PrimaryKeyType.Identity:
case PrimaryKeyType.Sequence:
case PrimaryKeyType.HiLo:
case PrimaryKeyType.SeqHiLo:
case PrimaryKeyType.Guid:
case PrimaryKeyType.Native:
case PrimaryKeyType.Assigned:
case PrimaryKeyType.Foreign:
className = model.PrimaryKeyAtt.Generator.ToString().ToLower();
break;
case PrimaryKeyType.GuidComb:
className = "guid.comb";
break;
case PrimaryKeyType.UuidHex:
className = "uuid.hex";
break;
case PrimaryKeyType.UuidString:
className = "uuid.string";
break;
}
AppendF("<generator {0}>", MakeAtt("class", className));
if (model.PrimaryKeyAtt.SequenceName != null)
{
Ident();
AppendF("<param name=\"sequence\">{0}</param>", model.PrimaryKeyAtt.SequenceName);
Dedent();
}
if (model.PrimaryKeyAtt.Params != null)
{
Ident();
String[] paras = model.PrimaryKeyAtt.Params.Split(',');
foreach (String param in paras)
{
String[] pair = param.Split('=');
AppendF("<param name=\"{0}\">{1}</param>", pair[0], pair[1]);
}
Dedent();
}
AppendF("</generator>");
}
Dedent();
Append("</id>");
}
public override void VisitPrimaryKey(PrimaryKeyModel model)
{
// check for composite key first
if (model.Property.PropertyType.GetCustomAttributes(typeof(CompositeKeyAttribute), false).Length > 0)
{
MethodInfo eq = model.Property.PropertyType.GetMethod("Equals", BindingFlags.Instance | BindingFlags.Public | BindingFlags.DeclaredOnly);
MethodInfo hc = model.Property.PropertyType.GetMethod("GetHashCode", BindingFlags.Instance | BindingFlags.Public | BindingFlags.DeclaredOnly);
if (eq == null || hc == null)
{
throw new ActiveRecordException(string.Format("To use type '{0}' as a composite id, you must implement Equals and GetHashCode.", model.Property.PropertyType.Name));
}
if (model.Property.PropertyType.IsSerializable == false)
{
throw new ActiveRecordException(string.Format("To use type '{0}' as a composite id it must be Serializable.", model.Property.PropertyType.Name));
}
int keyPropAttrCount = 0;
PropertyInfo[] compositeKeyProps = model.Property.PropertyType.GetProperties();
foreach (PropertyInfo keyProp in compositeKeyProps)
{
if (keyProp.GetCustomAttributes(typeof(KeyPropertyAttribute), false).Length > 0)
{
keyPropAttrCount++;
}
}
if (keyPropAttrCount < 2)
{
throw new ActiveRecordException(string.Format("To use type '{0}' as a composite id it must have two or more properties marked with the [KeyProperty] attribute.", model.Property.PropertyType.Name));
}
}
else
{
if (model.PrimaryKeyAtt.Column == null)
{
model.PrimaryKeyAtt.Column = model.Property.Name;
}
if (model.PrimaryKeyAtt.Generator == PrimaryKeyType.Foreign)
{
// Just a thought, let's see if we are a OneToOne
if (currentModel.OneToOnes.Count != 0)
{
// Yes, set the one to one as param
OneToOneModel oneToOne = (OneToOneModel)currentModel.OneToOnes[0];
String param = "property=" + oneToOne.Property.Name;
if (model.PrimaryKeyAtt.Params == null)
{
model.PrimaryKeyAtt.Params = param;
}
else
{
model.PrimaryKeyAtt.Params += "," + param;
}
}
}
}
}
