private static CodeStatementCollection BuildSelectReturnDataSet(IDataProviderDatabase database)
{
CodeStatementCollection statements = new CodeStatementCollection();
CodeVariableDeclarationStatement statement = new CodeVariableDeclarationStatement(typeof(IDbDataAdapter), "dataAdapter");
CodeExpression[] parameters = new CodeExpression[0];
statement.InitExpression = new CodeObjectCreateExpression(database.AdapterType, parameters);
statements.Add(statement);
CodeVariableReferenceExpression targetObject = new CodeVariableReferenceExpression("dataAdapter");
CodePropertyReferenceExpression left = new CodePropertyReferenceExpression(targetObject, "SelectCommand");
CodeVariableReferenceExpression right = new CodeVariableReferenceExpression("dbCommand");
statements.Add(new CodeAssignStatement(left, right));
CodeVariableDeclarationStatement statement2 = new CodeVariableDeclarationStatement(typeof(DataSet), "dataSet");
statement2.InitExpression = new CodeObjectCreateExpression(typeof(DataSet), new CodeExpression[0]);
statements.Add(statement2);
CodeVariableReferenceExpression expression = new CodeVariableReferenceExpression("dataSet");
CodeMethodInvokeExpression expression5 = new CodeMethodInvokeExpression(targetObject, "Fill", new CodeExpression[] { expression });
statements.Add(expression5);
statements.Add(new CodeSnippetStatement(string.Empty));
CodeMethodReturnStatement statement3 = new CodeMethodReturnStatement(expression);
statements.Add(statement3);
return statements;
}
private static CodeStatementCollection BuildConnection(IDataProviderDatabase database, string connectionString)
{
CodeStatementCollection statements = new CodeStatementCollection();
CodeVariableDeclarationStatement statement = new CodeVariableDeclarationStatement(typeof(string), "connectionString");
statement.InitExpression = new CodePrimitiveExpression(connectionString);
statements.Add(statement);
CodeVariableDeclarationStatement statement2 = new CodeVariableDeclarationStatement(typeof(IDbConnection), "dbConnection");
CodeVariableReferenceExpression expression = new CodeVariableReferenceExpression("connectionString");
statement2.InitExpression = new CodeObjectCreateExpression(database.ConnectionType, new CodeExpression[] { expression });
statements.Add(statement2);
return statements;
}
private static CodeStatementCollection BuildDbParameterAssignment(IDataProviderDatabase database, string paramName, DbType paramType, CodeDomProvider provider)
{
CodeStatementCollection statements = new CodeStatementCollection();
string name = "dbParam_" + GetVariableNameFromParameterName(paramName);
CodeVariableDeclarationStatement statement = new CodeVariableDeclarationStatement(typeof(IDataParameter), name);
CodeExpression[] parameters = new CodeExpression[0];
statement.InitExpression = new CodeObjectCreateExpression(database.ParameterType, parameters);
statements.Add(statement);
CodeVariableReferenceExpression targetObject = new CodeVariableReferenceExpression(name);
CodePropertyReferenceExpression left = new CodePropertyReferenceExpression(targetObject, "ParameterName");
CodePrimitiveExpression right = new CodePrimitiveExpression(paramName);
statements.Add(new CodeAssignStatement(left, right));
CodePropertyReferenceExpression expression4 = new CodePropertyReferenceExpression(targetObject, "Value");
CodeVariableReferenceExpression expression = new CodeVariableReferenceExpression(GetVariableNameFromParameterName(paramName));
CodeExpression expression6 = expression;
if (provider.FileExtension.ToLower().EndsWith("jsl"))
{
System.Type typeFromDbType = QueryParameter.GetTypeFromDbType(paramType);
if (typeFromDbType.IsPrimitive)
{
expression6 = new CodeCastExpression(typeFromDbType.FullName + " ", expression);
}
}
statements.Add(new CodeAssignStatement(expression4, expression6));
CodePropertyReferenceExpression expression7 = new CodePropertyReferenceExpression(targetObject, "DbType");
CodeTypeReferenceExpression expression8 = new CodeTypeReferenceExpression(typeof(DbType));
CodeFieldReferenceExpression expression9 = new CodeFieldReferenceExpression(expression8, Enum.GetName(typeof(DbType), paramType));
statements.Add(new CodeAssignStatement(expression7, expression9));
CodeVariableReferenceExpression expression10 = new CodeVariableReferenceExpression("dbCommand");
CodePropertyReferenceExpression expression11 = new CodePropertyReferenceExpression(expression10, "Parameters");
CodeMethodInvokeExpression expression12 = new CodeMethodInvokeExpression(expression11, "Add", new CodeExpression[] { targetObject });
statements.Add(expression12);
return statements;
}
private static CodeStatementCollection BuildCommand(IDataProviderDatabase database)
{
CodeStatementCollection statements = new CodeStatementCollection();
CodeVariableDeclarationStatement statement = new CodeVariableDeclarationStatement(typeof(IDbCommand), "dbCommand");
CodeExpression[] parameters = new CodeExpression[0];
statement.InitExpression = new CodeObjectCreateExpression(database.CommandType, parameters);
statements.Add(statement);
CodeVariableReferenceExpression targetObject = new CodeVariableReferenceExpression("dbCommand");
CodeVariableReferenceExpression right = new CodeVariableReferenceExpression("queryString");
CodePropertyReferenceExpression left = new CodePropertyReferenceExpression(targetObject, "CommandText");
statements.Add(new CodeAssignStatement(left, right));
CodeVariableReferenceExpression expression4 = new CodeVariableReferenceExpression("dbConnection");
CodePropertyReferenceExpression expression5 = new CodePropertyReferenceExpression(targetObject, "Connection");
statements.Add(new CodeAssignStatement(expression5, expression4));
return statements;
}