private static void writeColumnProperty(TextWriter writer, Column column)
{
CodeGenerationStatics.AddSummaryDocComment(writer, "This object will " + (column.AllowsNull && !column.NullValueExpression.Any() ? "sometimes" : "never") + " be null.");
writer.WriteLine(
"public " + column.DataTypeName + " " + Utility.GetCSharpIdentifier(column.PascalCasedNameExceptForOracle) + " { get { return __basicRow." +
Utility.GetCSharpIdentifier(column.PascalCasedName) + "; } }");
}
internal static void Generate(DBConnection cn, TextWriter writer, string baseNamespace, IDatabase database, IEnumerable <string> tableNames)
{
writer.WriteLine("namespace " + baseNamespace + ".TableConstants {");
foreach (var table in tableNames)
{
CodeGenerationStatics.AddSummaryDocComment(writer, "This object represents the constants of the " + table + " table.");
writer.WriteLine("public class " + Utility.GetCSharpIdentifier(table.TableNameToPascal(cn) + "Table") + " {");
CodeGenerationStatics.AddSummaryDocComment(writer, "The name of this table.");
writer.WriteLine("public const string Name = \"" + table + "\";");
foreach (var column in new TableColumns(cn, table, false).AllColumnsExceptRowVersion)
{
CodeGenerationStatics.AddSummaryDocComment(writer, "Contains schema information about this column.");
writer.WriteLine("public class " + Utility.GetCSharpIdentifier(column.PascalCasedNameExceptForOracle + "Column") + " {");
CodeGenerationStatics.AddSummaryDocComment(writer, "The name of this column.");
writer.WriteLine("public const string Name = \"" + column.Name + "\";");
CodeGenerationStatics.AddSummaryDocComment(
writer,
"The size of this column. For varchars, this is the length of the biggest string that can be stored in this column.");
writer.WriteLine("public const int Size = " + column.Size + ";");
writer.WriteLine("}");
}
writer.WriteLine("}");
}
writer.WriteLine("}");
}
internal static void WriteRowClasses(
TextWriter writer, IEnumerable <Column> columns, Action <TextWriter> transactionPropertyWriter, Action <TextWriter> toModificationMethodWriter)
{
// BasicRow
writer.WriteLine("internal class BasicRow {");
foreach (var column in columns.Where(i => !i.IsRowVersion))
{
writer.WriteLine("private readonly " + column.DataTypeName + " " + getMemberVariableName(column) + ";");
}
writer.WriteLine("internal BasicRow( DbDataReader reader ) {");
foreach (var column in columns.Where(i => !i.IsRowVersion))
{
writer.WriteLine($"{getMemberVariableName( column )} = {column.GetDataReaderValueExpression( "reader" )};");
}
writer.WriteLine("}");
foreach (var column in columns.Where(i => !i.IsRowVersion))
{
writer.WriteLine(
"internal " + column.DataTypeName + " " + Utility.GetCSharpIdentifier(column.PascalCasedName) + " { get { return " + getMemberVariableName(column) + "; } }");
}
writer.WriteLine("}");
// Row
CodeGenerationStatics.AddSummaryDocComment(writer, "Holds data for a row of this result.");
writer.WriteLine("public partial class Row: IEquatable<Row> {");
writer.WriteLine("private readonly BasicRow __basicRow;");
writer.WriteLine("internal Row( BasicRow basicRow ) {");
writer.WriteLine("__basicRow = basicRow;");
writer.WriteLine("}");
foreach (var column in columns.Where(i => !i.IsRowVersion))
{
writeColumnProperty(writer, column);
}
// NOTE: Being smarter about the hash code could make searches of the collection faster.
writer.WriteLine("public override int GetHashCode() { ");
// NOTE: Catch an exception generated by not having any uniquely identifying columns and rethrow it as a ApplicationException.
writer.WriteLine("return " + Utility.GetCSharpIdentifier(columns.First(c => c.UseToUniquelyIdentifyRow).PascalCasedNameExceptForOracle) + ".GetHashCode();");
writer.WriteLine("}"); // Object override of GetHashCode
writer.WriteLine(
@"public static bool operator == ( Row row1, Row row2 ) => Equals( row1, row2 );
public static bool operator !=( Row row1, Row row2 ) => !Equals( row1, row2 );" );
writer.WriteLine("public override bool Equals( object obj ) {");
writer.WriteLine("return Equals( obj as Row );");
writer.WriteLine("}"); // Object override of Equals
writer.WriteLine("public bool Equals( Row other ) {");
writer.WriteLine("if( other == null ) return false;");
var condition = "";
foreach (var column in columns.Where(c => c.UseToUniquelyIdentifyRow))
{
condition = StringTools.ConcatenateWithDelimiter(
" && ",
condition,
Utility.GetCSharpIdentifier(column.PascalCasedNameExceptForOracle) + " == other." + Utility.GetCSharpIdentifier(column.PascalCasedNameExceptForOracle));
}
writer.WriteLine("return " + condition + ";");
writer.WriteLine("}"); // Equals method
transactionPropertyWriter(writer);
toModificationMethodWriter(writer);
writer.WriteLine("}"); // class
}