public void Init(ColumnMapper columnMapper, Type baseType)
{
var otherColumns = columnMapper.Map(TargetType);
var reference = otherColumns.FirstOrDefault(c => c.ReferenceTable != null && c.ReferenceTable.BaseType == baseType);
if (reference != null)
{
//1-to-many
}
else
{
//many-to-many, auto cross reference table needed
//collection.AddCrossTable();
}
}
protected override Expression VisitProjection(ProjectionExpression proj)
{
if (isTopLevel)
{
isTopLevel = false;
this.currentSelect = proj.Select;
Expression projector = this.Visit(proj.Projector);
if (projector != proj.Projector || this.currentSelect != proj.Select)
{
return(new ProjectionExpression(this.currentSelect, projector, proj.Aggregator));
}
return(proj);
}
if (proj.IsSingleton && this.CanJoinOnServer(this.currentSelect))
{
TableAlias newAlias = new TableAlias();
this.currentSelect = this.currentSelect.AddRedundantSelect(this.language, newAlias);
// remap any references to the outer select to the new alias;
SelectExpression source = (SelectExpression)ColumnMapper.Map(proj.Select, newAlias, this.currentSelect.Alias);
// add outer-join test
ProjectionExpression pex = this.language.AddOuterJoinTest(new ProjectionExpression(source, proj.Projector));
var pc = ColumnProjector.ProjectColumns(this.language, pex.Projector, this.currentSelect.Columns, this.currentSelect.Alias, newAlias, proj.Select.Alias);
JoinExpression join = new JoinExpression(JoinType.OuterApply, this.currentSelect.From, pex.Select, null);
this.currentSelect = new SelectExpression(this.currentSelect.Alias, pc.Columns, join, null);
return(this.Visit(pc.Projector));
}
var saveTop = this.isTopLevel;
var saveSelect = this.currentSelect;
this.isTopLevel = true;
this.currentSelect = null;
Expression result = base.VisitProjection(proj);
this.isTopLevel = saveTop;
this.currentSelect = saveSelect;
return(result);
}
public void ColumnMapping()
{
var table = new TableAttribute("Lorem", "ipsum");
var mapper = new ColumnMapper(null);
var columns = mapper.Map <EntityBase>(table);
Assert.IsTrue(columns.All(c => c.TableName == "Lorem" && c.TableSchema == "ipsum"));
var discriminator = columns[0];
Assert.AreEqual(discriminator.ColumnName, ColumnMapper.DiscriminatorColumnName);
Assert.AreEqual(discriminator.ColumnType, "nvarchar(255)");
Assert.IsNull(discriminator.DeclaringTypes);
Assert.IsNull(discriminator.PropertyName);
/* EntityBase */
var seqEntityBase = new List <Type> {
typeof(EntityBase)
};
var id = columns[1];
Assert.AreEqual(id.ColumnName, "Id");
Assert.AreEqual(id.ColumnType, "int");
Assert.IsTrue(id.DeclaringTypes.SequenceEqual(seqEntityBase));
Assert.AreEqual(id.PropertyName, "Id");
var entityId = columns[2];
Assert.AreEqual(entityId.ColumnName, "EntityId");
Assert.AreEqual(entityId.ColumnType, "uniqueidentifier");
Assert.IsTrue(entityId.DeclaringTypes.SequenceEqual(seqEntityBase));
Assert.AreEqual(entityId.PropertyName, "EntityId");
var name = columns[3];
Assert.AreEqual(name.ColumnName, "Name");
Assert.AreEqual(name.ColumnType, "nvarchar(max)");
Assert.IsTrue(name.DeclaringTypes.SequenceEqual(seqEntityBase));
Assert.AreEqual(name.PropertyName, "Name");
var date = columns[4];
Assert.AreEqual(date.ColumnName, "Date");
Assert.AreEqual(date.ColumnType, "datetime2");
Assert.IsTrue(date.DeclaringTypes.SequenceEqual(seqEntityBase));
Assert.AreEqual(date.PropertyName, "Date");
/* Class A */
var seqClassA = new List <Type> {
typeof(ClassA)
};
var seqClassAB = new List <Type> {
typeof(ClassA), typeof(ClassB)
};
var number1 = columns[5];
Assert.AreEqual(number1.ColumnName, "NumberOfSomething");
Assert.AreEqual(number1.ColumnType, "int");
Assert.IsTrue(number1.DeclaringTypes.SequenceEqual(seqClassAB));
Assert.AreEqual(number1.PropertyName, "NumberOfSomething");
var createdOn = columns[6];
Assert.AreEqual(createdOn.ColumnName, "CreatedOn");
Assert.AreEqual(createdOn.ColumnType, "datetime2");
Assert.IsTrue(createdOn.DeclaringTypes.SequenceEqual(seqClassA));
Assert.AreEqual(createdOn.PropertyName, "CreatedOn");
/* Class B */
var seqClassBC = new List <Type> {
typeof(ClassB), typeof(ClassC)
};
var text = columns[7];
Assert.AreEqual(text.ColumnName, "Text");
Assert.AreEqual(text.ColumnType, "nvarchar(max)");
Assert.IsTrue(text.DeclaringTypes.SequenceEqual(seqClassBC));
Assert.AreEqual(text.PropertyName, "Text");
/* Class D */
var seqClassD = new List <Type> {
typeof(ClassD)
};
var number2 = columns[8];
Assert.AreEqual(number2.ColumnName, "ClassDNumberOfSomething");
Assert.AreEqual(number2.ColumnType, "bigint");
Assert.IsTrue(number2.DeclaringTypes.SequenceEqual(seqClassD));
Assert.AreEqual(number2.PropertyName, "NumberOfSomething");
/* Class E */
var seqClassE = new List <Type> {
typeof(ClassE)
};
var lorem = columns[9];
Assert.AreEqual(lorem.ColumnName, "Lorem");
Assert.AreEqual(lorem.ColumnType, "nvarchar(max)");
Assert.IsTrue(lorem.DeclaringTypes.SequenceEqual(seqClassE));
Assert.AreEqual(lorem.PropertyName, "Lorem");
Assert.AreEqual(columns.Count(), 10);
}
// FIX_PERF
private static void setFeatureRowFromIFeatureDataRecord(IFeatureDataRecord srcFeature,
FeatureDataRow targetFeature,
ColumnMapper columnMapper,
ICoordinateTransformation transform,
IGeometryFactory geoFactory)
{
//for (Int32 i = 0; i < srcFeature.FieldCount; i++)
//{
// String colName = srcFeature.GetName(i);
// targetFeature[colName] = srcFeature.GetValue(i);
//}
if (transform != null)//jd: to prevent case when transform is null - probably because a test was done earlier. need to check
{
if (srcFeature.Geometry.SpatialReference.EqualParams(transform.Target))
{
transform = null;
}
}
srcFeature.GetValues(columnMapper.SourceValues);
targetFeature.ItemArray = columnMapper.Map();
targetFeature.Geometry = transform == null
? srcFeature.Geometry
: transform.Transform(srcFeature.Geometry, geoFactory);
targetFeature.IsFullyLoaded = targetFeature.IsFullyLoaded || srcFeature.IsFullyLoaded;
}
public void ColumnMapping()
{
var table = new TableAttribute("Lorem", "ipsum");
var mapper = new ColumnMapper(null);
var columns = mapper.Map<EntityBase>(table);
Assert.IsTrue(columns.All(c => c.TableName == "Lorem" && c.TableSchema == "ipsum"));
var discriminator = columns[0];
Assert.AreEqual(discriminator.ColumnName, ColumnMapper.DiscriminatorColumnName);
Assert.AreEqual(discriminator.ColumnType, "nvarchar(255)");
Assert.IsNull(discriminator.DeclaringTypes);
Assert.IsNull(discriminator.PropertyName);
/* EntityBase */
var seqEntityBase = new List<Type> { typeof (EntityBase) };
var id = columns[1];
Assert.AreEqual(id.ColumnName, "Id");
Assert.AreEqual(id.ColumnType, "int");
Assert.IsTrue(id.DeclaringTypes.SequenceEqual(seqEntityBase));
Assert.AreEqual(id.PropertyName, "Id");
var entityId = columns[2];
Assert.AreEqual(entityId.ColumnName, "EntityId");
Assert.AreEqual(entityId.ColumnType, "uniqueidentifier");
Assert.IsTrue(entityId.DeclaringTypes.SequenceEqual(seqEntityBase));
Assert.AreEqual(entityId.PropertyName, "EntityId");
var name = columns[3];
Assert.AreEqual(name.ColumnName, "Name");
Assert.AreEqual(name.ColumnType, "nvarchar(max)");
Assert.IsTrue(name.DeclaringTypes.SequenceEqual(seqEntityBase));
Assert.AreEqual(name.PropertyName, "Name");
var date = columns[4];
Assert.AreEqual(date.ColumnName, "Date");
Assert.AreEqual(date.ColumnType, "datetime2");
Assert.IsTrue(date.DeclaringTypes.SequenceEqual(seqEntityBase));
Assert.AreEqual(date.PropertyName, "Date");
/* Class A */
var seqClassA = new List<Type> { typeof(ClassA) };
var seqClassAB = new List<Type> { typeof(ClassA), typeof(ClassB) };
var number1 = columns[5];
Assert.AreEqual(number1.ColumnName, "NumberOfSomething");
Assert.AreEqual(number1.ColumnType, "int");
Assert.IsTrue(number1.DeclaringTypes.SequenceEqual(seqClassAB));
Assert.AreEqual(number1.PropertyName, "NumberOfSomething");
var createdOn = columns[6];
Assert.AreEqual(createdOn.ColumnName, "CreatedOn");
Assert.AreEqual(createdOn.ColumnType, "datetime2");
Assert.IsTrue(createdOn.DeclaringTypes.SequenceEqual(seqClassA));
Assert.AreEqual(createdOn.PropertyName, "CreatedOn");
/* Class B */
var seqClassBC = new List<Type> { typeof(ClassB), typeof(ClassC) };
var text = columns[7];
Assert.AreEqual(text.ColumnName, "Text");
Assert.AreEqual(text.ColumnType, "nvarchar(max)");
Assert.IsTrue(text.DeclaringTypes.SequenceEqual(seqClassBC));
Assert.AreEqual(text.PropertyName, "Text");
/* Class D */
var seqClassD = new List<Type> { typeof(ClassD) };
var number2 = columns[8];
Assert.AreEqual(number2.ColumnName, "ClassDNumberOfSomething");
Assert.AreEqual(number2.ColumnType, "bigint");
Assert.IsTrue(number2.DeclaringTypes.SequenceEqual(seqClassD));
Assert.AreEqual(number2.PropertyName, "NumberOfSomething");
/* Class E */
var seqClassE = new List<Type> { typeof(ClassE) };
var lorem = columns[9];
Assert.AreEqual(lorem.ColumnName, "Lorem");
Assert.AreEqual(lorem.ColumnType, "nvarchar(max)");
Assert.IsTrue(lorem.DeclaringTypes.SequenceEqual(seqClassE));
Assert.AreEqual(lorem.PropertyName, "Lorem");
Assert.AreEqual(columns.Count(), 10);
}
protected override Expression VisitProjection(ProjectionExpression proj)
{
SelectExpression save = this.currentSelect;
this.currentSelect = proj.Select;
try
{
if (!this.isTopLevel)
{
if (this.CanJoinOnClient(this.currentSelect))
{
// make a query that combines all the constraints from the outer queries into a single select
SelectExpression newOuterSelect = (SelectExpression)QueryDuplicator.Duplicate(save);
// remap any references to the outer select to the new alias;
SelectExpression newInnerSelect = (SelectExpression)ColumnMapper.Map(proj.Select, newOuterSelect.Alias, save.Alias);
// add outer-join test
ProjectionExpression newInnerProjection = this.language.AddOuterJoinTest(new ProjectionExpression(newInnerSelect, proj.Projector));
newInnerSelect = newInnerProjection.Select;
Expression newProjector = newInnerProjection.Projector;
TableAlias newAlias = new TableAlias();
var pc = ColumnProjector.ProjectColumns(this.language, newProjector, null, newAlias, newOuterSelect.Alias, newInnerSelect.Alias);
JoinExpression join = new JoinExpression(JoinType.OuterApply, newOuterSelect, newInnerSelect, null);
SelectExpression joinedSelect = new SelectExpression(newAlias, pc.Columns, join, null, null, null, proj.IsSingleton, null, null, false);
// apply client-join treatment recursively
this.currentSelect = joinedSelect;
newProjector = this.Visit(pc.Projector);
// compute keys (this only works if join condition was a single column comparison)
List <Expression> outerKeys = new List <Expression>();
List <Expression> innerKeys = new List <Expression>();
if (this.GetEquiJoinKeyExpressions(newInnerSelect.Where, newOuterSelect.Alias, outerKeys, innerKeys))
{
// outerKey needs to refer to the outer-scope's alias
var outerKey = outerKeys.Select(k => ColumnMapper.Map(k, save.Alias, newOuterSelect.Alias));
// innerKey needs to refer to the new alias for the select with the new join
var innerKey = innerKeys.Select(k => ColumnMapper.Map(k, joinedSelect.Alias, ((ColumnExpression)k).Alias));
ProjectionExpression newProjection = new ProjectionExpression(joinedSelect, newProjector, proj.Aggregator);
return(new ClientJoinExpression(newProjection, outerKey, innerKey));
}
}
else
{
bool saveJoin = this.canJoinOnClient;
this.canJoinOnClient = false;
var result = base.VisitProjection(proj);
this.canJoinOnClient = saveJoin;
return(result);
}
}
else
{
this.isTopLevel = false;
}
return(base.VisitProjection(proj));
}
finally
{
this.currentSelect = save;
}
}
