private TranslateResult TranslateValues(object instance, Type type, List <Parameter> parameters)
{
TableSchema tableSchema = TableSchemaResolver.GetTableSchema(type);
for (int i = 0, count = tableSchema.FieldsSchema.Count; i < count; i++)
{
var field = tableSchema.FieldsSchema[i];
object value = ExpressionFunc.GetPropertyValue(instance, type, field.PropertyInfo);
if (value == null && field.PropertyInfo.PropertyType.Name == "String")
{
value = "";
}
if (parameters == null)
{
clauseBuilder.AppendClause(parameterBuilder.GenerateParameterName(), value);
}
else
{
clauseBuilder.AppendClause(parameters[i].Name, value);
}
}
return(new TranslateResult
{
CommandText = clauseBuilder.GetExpressionText(","), // INSERT ... VALUES(@value1,@value2,@value3,...)
Parameters = clauseBuilder.GetExpressionParameters(),
});
}
private TranslateResult TranslateColumnValue(object instance, Type type, List <bool> fieldsUsable, List <Parameter> parameters)
{
bool isFirst = true;
TableSchema tableSchema = TableSchemaResolver.GetTableSchema(type);
for (int i = 0, count = tableSchema.FieldsSchema.Count; i < count; i++)
{
var field = tableSchema.FieldsSchema[i];
if (fieldsUsable[i] && field.IsPrimaryKey == false)
{
object value = ExpressionFunc.GetPropertyValue(instance, type, field.PropertyInfo);
if (value == null && field.PropertyInfo.PropertyType.Name == "String")
{
value = "";
}
if (value == null)
{
throw new NotSupportedException(string.Format("The field '{0}' is not supported", field.FieldName));
}
if (!isFirst)
{
clauseBuilder.AppendClause(",");
}
clauseBuilder.AppendClause(field.FieldName);
clauseBuilder.AppendClause("=");
if (field.IsUpdCount)
{
int iValue = Convert.ToInt32(value);
if (iValue == short.MaxValue)
{
iValue = 1;
}
else
{
iValue++;
}
value = Convert.ChangeType(iValue, field.PropertyInfo.PropertyType);
ExpressionFunc.SetPropertyValue(instance, type, field.PropertyInfo, value);
}
clauseBuilder.AppendClause(parameterBuilder.GenerateParameterName(), value);
isFirst = false;
}
}
return(new TranslateResult
{
CommandText = clauseBuilder.GetExpressionText(), // UPDATE ... column1=@value1,column2=@value2,...
Parameters = clauseBuilder.GetExpressionParameters(),
});
}
private TranslateResult TranslateWhere(object instance, Type type, List <Parameter> parameters)
{
bool isFirst = true;
TableSchema tableSchema = TableSchemaResolver.GetTableSchema(type);
int paramIndex = 0;
for (int i = 0, count = tableSchema.FieldsSchema.Count; i < count; i++)
{
var field = tableSchema.FieldsSchema[i];
if (field.IsPrimaryKey || field.IsUpdCount)
{
object value = ExpressionFunc.GetPropertyValue(instance, type, field.PropertyInfo);
if (value == null)
{
throw new NotSupportedException(string.Format("The field '{0}' is not supported", field.FieldName));
}
if (!isFirst)
{
clauseBuilder.AppendClause(" And ");
}
clauseBuilder.AppendClause(field.FieldName);
clauseBuilder.AppendClause("=");
if (parameters == null)
{
clauseBuilder.AppendClause(parameterBuilder.GenerateParameterName(), value);
}
else
{
clauseBuilder.AppendClause(parameters[paramIndex++].Name, value);
}
isFirst = false;
}
}
return(new TranslateResult
{
CommandText = clauseBuilder.GetExpressionText(), // UPDATE ...Where key_column=some_value And UpdCount=some_value
// DELETE ...Where key_column=some_value And UpdCount=some_value
Parameters = clauseBuilder.GetExpressionParameters(),
});
}
