private static void GenerateParameterTypeDefinitions(Union <StringBuilder, StreamWriter> sBuilder, List <PropertyEntry> handledProperties, int handledPropertyCount, PropertyEntry primaryKey)
{
for (var i = 0; i < handledPropertyCount; i++)
{
GenerateParameterTypeString(sBuilder, handledProperties[i], i);
sBuilder.Append((i != (handledPropertyCount - 1)) ? "," : "");
}
if (primaryKey != null)
{
sBuilder.Append(",");
GenerateParameterTypeString(sBuilder, primaryKey, handledPropertyCount);
}
sBuilder.Append("'");
}
private static void GenerateParameterValueString(Union <StringBuilder, StreamWriter> sBuilder, PropertyEntry prop, int position)
{
sBuilder.Append(GenerateParameterName(position));
sBuilder.Append(" = ");
if (IsQuoteNeededForProperty(prop.Metadata.SqlServer().ColumnType))
{
//quote property
sBuilder.Append("'");
sBuilder.Append(prop.CurrentValue.ToString());
sBuilder.Append("'");
}
else
{
//check for binary type (may need to do this for image type as well)
if (prop.Metadata.SqlServer().ColumnType == "varbinary(max)")
{
// This seems hacky, but it works
var binaryBuilder = new StringBuilder();
binaryBuilder.Append("0x");
binaryBuilder.Append(BitConverter.ToString((byte[])prop.CurrentValue).Replace("-", ""));
sBuilder.Append(binaryBuilder.ToString());
binaryBuilder = null;
}
else
{
sBuilder.Append(prop.CurrentValue.ToString());
}
}
}
private static void GenerateParameters(Union <StringBuilder, StreamWriter> sBuilder, List <PropertyEntry> handledProperties, int handledPropertyCount, PropertyEntry primaryKey)
{
GenerateParameterTypeDefinitions(sBuilder, handledProperties, handledPropertyCount, primaryKey);
sBuilder.Append(", ");
//Generate Parameter Values
GenerateParameterValues(sBuilder, handledProperties, handledPropertyCount, primaryKey);
}
private static void GenerateParameterValues(Union <StringBuilder, StreamWriter> sBuilder, List <PropertyEntry> handledProperties, int handledPropertyCount, PropertyEntry primaryKey)
{
GenerateParameterValues(sBuilder, handledProperties, handledPropertyCount);
if (primaryKey != null)
{
sBuilder.Append(",");
GenerateParameterValue(sBuilder, primaryKey, handledPropertyCount, handledPropertyCount);
}
}
private static void GenerateParameterValue(Union <StringBuilder, StreamWriter> sBuilder, PropertyEntry prop, int position, int handledPropertyCount)
{
GenerateParameterValueString(sBuilder, prop, position);
// if we're not on the key and we're not on the last property (excluding the key) add a comma
if (position != handledPropertyCount)
{
sBuilder.Append((position != (handledPropertyCount - 1)) ? "," : "");
}
}
private static void GenerateDeletes(Union <StringBuilder, StreamWriter> sBuilder, DbContext context, IEnumerable <EntityEntry> entries, SqlServerTypeMapper mapper)
{
foreach (var entry in entries)
{
var tableName = GetTableName(entry.Entity.GetType(), context);
var lastProperty = entry.Properties.Last();
var primaryKeyProperty = GetPrimaryKeyProperty(entry.Properties);
sBuilder.Append("EXECUTE sp_executesql N'DELETE FROM ");
sBuilder.Append(tableName);
sBuilder.Append(" WHERE ");
GenerateColumnName(sBuilder, primaryKeyProperty);
sBuilder.Append(" = ");
sBuilder.Append(GenerateParameterName(0));
sBuilder.Append("'");
sBuilder.Append(", N'");
GenerateParameterTypeString(sBuilder, primaryKeyProperty, 0);
sBuilder.Append("', ");
GenerateParameterValueString(sBuilder, primaryKeyProperty, 0);
sBuilder.Append(";");
}
}
private static void GenerateInserts(Union <StringBuilder, StreamWriter> sBuilder, DbContext context, IEnumerable <EntityEntry> entries, SqlServerTypeMapper mapper)
{
foreach (var entry in entries)
{
var tableName = GetTableName(entry.Entity.GetType(), context);
var lastProperty = entry.Properties.Last();
sBuilder.Append("EXECUTE sp_executesql N'INSERT INTO ");
sBuilder.Append(tableName);
sBuilder.Append(" ");
sBuilder.Append("(");
//We'll need this list later to add only the necesary parameters in order
var handledProperties = GetPropertiesToHandle(entry);
foreach (var prop in entry.Properties)
{
//Skip identity columnns and other generated values
if (prop.Metadata.ValueGenerated == Microsoft.EntityFrameworkCore.Metadata.ValueGenerated.OnAdd)
{
continue;
}
GenerateColumnName(sBuilder, prop);
sBuilder.Append((prop.Metadata.Name != lastProperty.Metadata.Name) ? ", ": "");
handledProperties.Add(prop);
}
sBuilder.Append(") VALUES (");
var handledPropertyCount = handledProperties.Count();
for (var i = 0; i < handledPropertyCount; i++)
{
var prop = handledProperties[i];
sBuilder.Append(GenerateParameterName(i));
sBuilder.Append((i != (handledPropertyCount - 1)) ? "," : "");
}
sBuilder.Append(")'");
//Generate Parameters
sBuilder.Append(", N'");
GenerateParameters(sBuilder, handledProperties, handledPropertyCount);
sBuilder.Append(";");
}
}
private static void GenerateColumnName(Union <StringBuilder, StreamWriter> sBuilder, PropertyEntry property)
{
sBuilder.Append("[");
sBuilder.Append(property.Metadata.SqlServer().ColumnName);
sBuilder.Append("]");
}
private static void GenerateParameterTypeString(Union <StringBuilder, StreamWriter> sBuilder, PropertyEntry prop, int position)
{
sBuilder.Append(GenerateParameterName(position));
sBuilder.Append(" ");
sBuilder.Append(prop.Metadata.SqlServer().ColumnType);
}
private static void GenerateUpdates(Union <StringBuilder, StreamWriter> sBuilder, DbContext context, IEnumerable <EntityEntry> entries, SqlServerTypeMapper mapper)
{
foreach (var entry in entries)
{
var tableName = GetTableName(entry.Entity.GetType(), context);
var lastProperty = entry.Properties.Last();
sBuilder.Append("EXECUTE sp_executesql N'UPDATE ");
sBuilder.Append(tableName);
sBuilder.Append(" SET ");
//We'll need this list later to deal with only the necesary parameters in order
var handledProperties = GetPropertiesToHandle(entry);
PropertyEntry primaryKeyProperty = GetPrimaryKeyProperty(entry.Properties);
var handledPropertyCount = handledProperties.Count;
for (var i = 0; i < handledPropertyCount; i++)
{
var prop = handledProperties[i];
GenerateColumnName(sBuilder, prop);
sBuilder.Append(" = ");
sBuilder.Append(GenerateParameterName(i));
sBuilder.Append((prop.Metadata.Name != lastProperty.Metadata.Name) ? ", " : "");
}
sBuilder.Append(" WHERE ");
GenerateColumnName(sBuilder, primaryKeyProperty);
sBuilder.Append("=");
sBuilder.Append(GenerateParameterName(handledPropertyCount));
sBuilder.Append("', N'");
GenerateParameters(sBuilder, handledProperties, handledPropertyCount, primaryKeyProperty);
sBuilder.Append(";");
}
}
