private void PopulateMappingListItems()
{
_mappingListItems.Clear();
// load existing mappings if we have a ref constraint and the user
// hasn't changed the principal role
if (_association.ReferentialConstraint != null
&&
_association.ReferentialConstraint.Principal.Role.Target == _principal)
{
var principalType = _principal.Type.Target;
var principalKeys = GetKeysForType(principalType);
var pnum = _association.ReferentialConstraint.Principal.PropertyRefs.GetEnumerator();
var dnum = _association.ReferentialConstraint.Dependent.PropertyRefs.GetEnumerator();
// always move to the next principal ref
while (pnum.MoveNext())
{
var psym = pnum.Current.Name.NormalizedName();
Symbol dsym = null;
if (dnum.MoveNext())
{
dsym = dnum.Current.Name.NormalizedName();
}
var item = new MappingListItem(psym, dsym, IsValidPrincipalKey(psym, principalKeys));
_mappingListItems.Add(item.PrincipalKey, item);
}
}
// add any remaining principal keys that aren't mapped yet in a
// ref constraint (which means all if no ref constraint exists)
var principalEntityType = _principal.Type.Target as ConceptualEntityType;
Debug.Assert(principalEntityType != null, "EntityType is not ConceptualEntityType");
foreach (var key in principalEntityType.ResolvableTopMostBaseType.ResolvableKeys)
{
if (_mappingListItems.ContainsKey(key.NormalizedName) == false)
{
var item = new MappingListItem(key.NormalizedName, null, true);
_mappingListItems.Add(item.PrincipalKey, item);
}
}
// attempt to auto-map the keys if we don't have a ref constraint
if (_association.ReferentialConstraint == null
&&
principalEntityType != null
&&
_dependent.Type.Target != null)
{
// load a list of dependent properties
var dependentProperties = new List<Symbol>();
foreach (var dprop in GetMappableDependentProperties())
{
dependentProperties.Add(dprop.NormalizedName);
}
// process each principal key first by name
foreach (var pkey in principalEntityType.ResolvableTopMostBaseType.ResolvableKeys)
{
var item = _mappingListItems[pkey.NormalizedName];
// attempt a unique 1:1 name match between the principal key and any dependent property
if (item.DependentProperty == null)
{
item.DependentProperty = dependentProperties.Where(p => p.GetLocalName() == pkey.LocalName.Value).FirstOrDefault();
if (item.DependentProperty != null)
{
dependentProperties.Remove(item.DependentProperty);
}
}
}
// process any unmapped primary keys now ordinally
foreach (var pkey in principalEntityType.ResolvableTopMostBaseType.ResolvableKeys)
{
var item = _mappingListItems[pkey.NormalizedName];
if (item.DependentProperty == null)
{
// are there any unmapped dependent keys?
if (dependentProperties.Count > 0)
{
// there are, pick the first one
item.DependentProperty = dependentProperties[0];
dependentProperties.Remove(item.DependentProperty);
}
}
}
}
}
private void PopulateMappingListItems()
{
_mappingListItems.Clear();
// load existing mappings if we have a ref constraint and the user
// hasn't changed the principal role
if (_association.ReferentialConstraint != null
&&
_association.ReferentialConstraint.Principal.Role.Target == _principal)
{
var principalType = _principal.Type.Target;
var principalKeys = GetKeysForType(principalType);
var pnum = _association.ReferentialConstraint.Principal.PropertyRefs.GetEnumerator();
var dnum = _association.ReferentialConstraint.Dependent.PropertyRefs.GetEnumerator();
// always move to the next principal ref
while (pnum.MoveNext())
{
var psym = pnum.Current.Name.NormalizedName();
Symbol dsym = null;
if (dnum.MoveNext())
{
dsym = dnum.Current.Name.NormalizedName();
}
var item = new MappingListItem(psym, dsym, IsValidPrincipalKey(psym, principalKeys));
_mappingListItems.Add(item.PrincipalKey, item);
}
}
// add any remaining principal keys that aren't mapped yet in a
// ref constraint (which means all if no ref constraint exists)
var principalEntityType = _principal.Type.Target as ConceptualEntityType;
Debug.Assert(principalEntityType != null, "EntityType is not ConceptualEntityType");
foreach (var key in principalEntityType.ResolvableTopMostBaseType.ResolvableKeys)
{
if (_mappingListItems.ContainsKey(key.NormalizedName) == false)
{
var item = new MappingListItem(key.NormalizedName, null, true);
_mappingListItems.Add(item.PrincipalKey, item);
}
}
// attempt to auto-map the keys if we don't have a ref constraint
if (_association.ReferentialConstraint == null
&&
principalEntityType != null
&&
_dependent.Type.Target != null)
{
// load a list of dependent properties
var dependentProperties = new List <Symbol>();
foreach (var dprop in GetMappableDependentProperties())
{
dependentProperties.Add(dprop.NormalizedName);
}
// process each principal key first by name
foreach (var pkey in principalEntityType.ResolvableTopMostBaseType.ResolvableKeys)
{
var item = _mappingListItems[pkey.NormalizedName];
// attempt a unique 1:1 name match between the principal key and any dependent property
if (item.DependentProperty == null)
{
item.DependentProperty = dependentProperties.Where(p => p.GetLocalName() == pkey.LocalName.Value).FirstOrDefault();
if (item.DependentProperty != null)
{
dependentProperties.Remove(item.DependentProperty);
}
}
}
// process any unmapped primary keys now ordinally
foreach (var pkey in principalEntityType.ResolvableTopMostBaseType.ResolvableKeys)
{
var item = _mappingListItems[pkey.NormalizedName];
if (item.DependentProperty == null)
{
// are there any unmapped dependent keys?
if (dependentProperties.Count > 0)
{
// there are, pick the first one
item.DependentProperty = dependentProperties[0];
dependentProperties.Remove(item.DependentProperty);
}
}
}
}
}