internal static SqlCommand BuildEntitySetQuery(EntityQueryContext context, IEntity entity, RelationProperty relationProperty)
{
var relationKey = RelationshipUnity.GetRelationship(relationProperty);
if (relationKey == null || relationKey.Style != RelationshipStyle.One2Many)
{
return(null);
}
var query = new EntityQueryBuilder(context, relationProperty.RelationType)
.Select().All().From();
var valid = true;
foreach (var key in relationKey.Keys)
{
var val = entity.InternalGetValue(key.ThisProperty);
if (PropertyValue.IsNullOrEmpty(val) || !val.IsValid)
{
valid = false;
continue;
}
query = query.And(key.OtherProperty, entity.InternalGetValue(key.ThisProperty));
}
if (!valid)
{
return(string.Empty);
}
return(query.ToSqlCommand());
}
internal static SqlCommand BuildGetFirstQuery(EntityQueryContext context, Type entityType, object[] primaryValues)
{
var query = new EntityQueryBuilder(context, entityType)
.Select().All().From();
query = BuildPrimaryKeyCondition(query, entityType, primaryValues);
return(query.ToSqlCommand());
}
internal static SqlCommand BuildDeleteQuery(EntityQueryContext context, Type entityType, object[] primaryValues)
{
var query = new EntityQueryBuilder(context, entityType)
.Delete();
query = BuildPrimaryKeyCondition(query, entityType, primaryValues);
return(query.ToSqlCommand());
}
internal static SqlCommand BuildDeleteQuery(EntityQueryContext context, IEntity entity)
{
var query = new EntityQueryBuilder(context, entity.EntityType)
.Delete();
query = BuildPrimaryKeyCondition(query, entity);
return(query.ToSqlCommand());
}
internal static SqlCommand BuildUpdateFakeDeleteQuery(EntityQueryContext context, IEntity entity, IProperty fakeProperty)
{
var query = new EntityQueryBuilder(context, entity.EntityType)
.Update().Set(new QueryValue {
Property = fakeProperty, Value = 1
});
query = BuildPrimaryKeyCondition(query, entity);
return(query.ToSqlCommand());
}
private static EntityQueryBuilder BuildPrimaryKeyCondition(EntityQueryBuilder query, IEntity entity)
{
var primaryKeys = PropertyUnity.GetPrimaryProperties(entity.EntityType.GetRootType());
if (primaryKeys.IsNullOrEmpty())
{
throw new Exception(SR.GetString(SRKind.NotDefinedPrimaryKey));
}
foreach (var property in primaryKeys)
{
query = query.And(property, entity.InternalGetValue(property));
}
return(query);
}
internal static SqlCommand BuildReferenceQuery(EntityQueryContext context, IEntity entity, ReferenceProperty referenceProperty)
{
var relationKey = RelationshipUnity.GetRelationship(referenceProperty);
if (relationKey == null)
{
return(null);
}
var query = new EntityQueryBuilder(context, referenceProperty.RelationType)
.Select().Single(referenceProperty.Reference).From();
foreach (var key in relationKey.Keys)
{
query = query.And(key.ThisProperty, entity.InternalGetValue(key.OtherProperty));
}
return(query.ToSqlCommand());
}
private static EntityQueryBuilder BuildPrimaryKeyCondition(EntityQueryBuilder query, Type entityType, object[] primaryValues)
{
var primaryKeys = PropertyUnity.GetPrimaryProperties(entityType.GetRootType());
if (primaryKeys.IsNullOrEmpty())
{
throw new Exception(SR.GetString(SRKind.NotDefinedPrimaryKey));
}
var i = 0;
foreach (var property in primaryKeys)
{
query = query.And(property, primaryValues[i++]);
}
return(query);
}
internal static SqlCommand BuildEntityQuery(EntityQueryContext context, IEntity entity, RelationProperty relationProperty)
{
var relationKey = RelationshipUnity.GetRelationship(relationProperty);
if (relationKey == null)
{
return(null);
}
Type relationType;
Func <RelationshipKey, IProperty> func1, func2;
if (entity.EntityType == relationKey.ThisType)
{
relationType = relationKey.OtherType;
func1 = key => key.OtherProperty;
func2 = key => key.ThisProperty;
}
else
{
relationType = relationKey.ThisType;
func1 = key => key.ThisProperty;
func2 = key => key.OtherProperty;
}
var query = new EntityQueryBuilder(context, relationType)
.Select().All().From();
foreach (var key in relationKey.Keys)
{
var val = entity.InternalGetValue(func2(key));
if (PropertyValue.IsNullOrEmpty(val) || !val.IsValid)
{
return(string.Empty);
}
query = query.And(func1(key), val);
}
return(query.ToSqlCommand());
}
internal static SqlCommand BuidCreateQuery(EntityQueryContext context, IEntity entity)
{
var properties = GetInsertProperties(entity);
if (properties.Count == 0)
{
return(string.Empty);
}
var values = new QueryValue[properties.Count];
for (var i = 0; i < values.Length; i++)
{
values[i] = new QueryValue {
Property = properties[i], Value = GetInsertValue(context, entity, properties[i])
};
}
var query = new EntityQueryBuilder(context, entity.EntityType)
.Insert().Set(values);
return(query.ToSqlCommand());
}
internal EntityQueryBuilder From(EntityQueryBuilder builder)
{
m_builder.AppendFormat(" FROM ({0}) T", builder);
return(this);
}
