We are using the CsvDataFileLoader to load in our reference data like so:
new InsertIdentityOperation(DatabaseOperation.CLEAN_INSERT)
.execute(connection,
new CsvDataFileLoader().load("/sql/ReferenceData/"));
Is there anyway to put null values into a csv that is loaded into our db.
I don't think there is, I would imagine that , null and NULL would all get interpreted as their string values.
Has anyone managed to do this or know of a work around for this problem?
CsvDataFileLoader uses CsvURLProducer to load and parse the data.
In that class on Line 145 for dbunit 2.4.8 you see the following:
if (CsvDataSetWriter.NULL.equals(row[col])) {
row[col] = null;
}
CsvDataSetWriter.NULL contains the string "null" therefore your assumption that null would get interpreted as a string value appears to be incorrect and you should use this in your CSV.
Of course this means that you can't have the string "null" in your fields but I'm sure this isn't often required.
Related
I'm creating a new record in CRM plugin(by reading the data from a related record) and the data that I'm passing may / may not contain "OptionSetValueCollection". Whenever the value for the OptionSetValueCollection is null the IOrganization.Create is throwing a Generic SQL exception.
Currently I'm checking the submitted value for null and when not null I'm not submitting a value for the created object.
My question is why does OptionSetValueCollection not taking null? Is this a platform issue?
I've also tried creating a List<OptionSetValue> object and adding the incoming OptionSetValues from the OptionSetValueCollection and then passing it to the target attribute, tried passing in null and also used the null-coalescing operator all with no luck.
//Earlybound code
Account account = new Account(){
Name = newBrand,
new_accounttype = new OptionSetValue((int)new_AccountType.Brand),
TerritoryId = siteRequestRecord.new_territoryid,
new_category1 = siteRequestRecord.new_category1 ?? null,
};
if (category2 != null)
{
account.new_category2 = siteRequestRecord.new_category2;
}
service.Create(account);
Seems to be a long outstanding issue.
There is a bug related to multiselect optionset - if you set it to null during creation that will trigger an error. But the same code that sets field to null works fine during update.
So if you set it to null during Create just don't set field value and as a result you'll get blank value of a field.
If I understand you want to set Optionset to null. use below code it shall work and set null for your optionset
new_accounttype = null;
I need to query DB for a max value of 1 column
I'm trying to do it this sway
public static long getLastJobSeqNum(){
return jdbcTemplate.queryForObject("SELECT max(JOBIQ) as JOBIQ FROM JOBS_RUN_STAT", long.class);
}
and I'm getting a nullpointer error even I know that there is 1 row on db; seems like it's not a save way to query for a max value
how to make it properly ?
The problem is that Spring tries to unbox into a long primitive. Therefore if you have no elements the JOBIQ will be null as well. The null Long initially created cannot be unboxed without causing a null pointer. You might use Long.class as a second parameter and wrap the whole method call in an Optional.ofNullable(<jdbcCall>).orElse(<fallbackvalue>)
I'm working with an xml document in C# that has multiple (100+) points of stock market data. I'd like to create objects and add them to a List<> by passing initialization values retrieved from an xml document via linq. At the moment I'm just able to run a linq query and return one of the xml fields, in the code below, the attribute "symbol." I'd also like to return the document's "LastTradeDate, DaysLow, DaysHigh, LastTradePriceOnly, Open, and Volume." From there, my custom constructor is: StockDataPoint(Symbol, TradeDate, Open, High, Low, Close, Volume). A nudge in the right direction would be great. Here's the current linq:
var makeInfo =
from s in doc.Descendants("quote")
where s.Element("LastTradeDate") != null
&& s.Attribute("symbol") != null
let dateStr = s.Element("LastTradeDate").Value
where !string.IsNullOrEmpty(dateStr)
&& DateTime.Parse(dateStr, enUS) == targetDate
select s.Attribute("symbol").Value;
Well it depends on your XML format, but you might just want something like:
...
select new StockDataPoint((string) s.Attribute("symbol"),
(DateTime) s.Attribute("TradeDate"),
(decimal) s.Attribute("Open"),
(decimal) s.Attribute("High"),
(decimal) s.Attribute("Low"),
(decimal) s.Attribute("Close"),
(long) s.Attribute("Volume"));
Note that by use the explicit operators on XAttribute, you can avoid performing the parse yourself. Indeed, you can use this earlier in your query too:
var makeInfo = from s in doc.Descendants("quote")
where s.Attribute("symbol") &&
(DateTime?) s.Attribute("LastTradeDate") == targetDate
select ...
If the target of the cast is a nullable type (either a nullable value type or a reference type) then if the attribute is missing, the result will be the null value for that type, which is very handy.
You need to create a class:
select new YourClass {
Symbol = s.Attribute("symbol").Value,
...
}
LINQ newbie here
I am trying to get a value of a field - using a fieldName variable.
If I do a watch on row[FieldName] I do get a value - but when I do it on the actual code it will not compile.
string fieldName = "awx_name"
List<awx_property> propertyQry =
(
from property in crm.awx_propertyawx_properties
where property.awx_propertyid == new Guid(id)
select property
).ToList();
foreach (awx_property row in propertyQry)
{
//THIS DOES NOT WORK
fieldValue = row[fieldName];
}
Thanks in advance. Alternatives would be welcome as well
You keep us guessing what you are trying to do here... You need to specify the types of the objects, so it's easy for us to understand and help. Anyway, I think you are trying to get an object based on the ID. Since you are getting by Id, my guess would be the return value is a single object.
var propertyObj =( from property in crm.awx_propertyawx_properties
where property.awx_propertyid == new Guid(id)
select property
).SingleOrDefault();
if(propertyObj != null) {
fieldValue = propertyObj.GetType().GetProperty(fieldName).GetValue(propertyObj, null);
}
Of course, you need to add validation to make sure you don't get null or any other error while accessing the property value.
Hope it helps.
What type is fieldValue? What does awx_property look like? This will only work is awx_property is a key/value collection. It its not, you could use reflection instead.
If it is a key/value collection you are probably missing a cast. (row[FieldName].ToString() or something) Also you are missing a semi-colon in the foreach block.
I'm using a Typed DataSet with an Insert statement; I have a table that has a smalldatetime field defined to accept null values. When I insert from a .NET 2.0 FormView, I get a "SqlDateTime overflow. Must be between 1/1/1753 12:00:00 AM and 12/31/9999 11:59:59 PM."
Now, I've read this post, and the parameter as sent to the class constructor is defined as
global::System.Nullable<global::System.DateTime> DoB
So, it looks like it should accept a Nullable obj. Additionally, the generated code is testing the value sent.
if ((DoB.HasValue == true)) {
command.Parameters[6].Value = ((System.DateTime)(DoB.Value));
}
else {
command.Parameters[6].Value = global::System.DBNull.Value;
}
Specifically, the error is occurring when generated SqlClient.SqlCommand.ExecuteScalar() runs:
try {
returnValue = command.ExecuteScalar();
}
So, I guess my question is: how do I use a Typed DataSet to set a blank value (passed from a FormView on CommandName=Insert) to a null in a database?
Ok, so here's what worked for me. First, to reiterate, I've got a Typed DataSet with DataAdapters that's generating the ADO objects. So, on my page, I can create a ObjectDataSource with the type that points to my adapter, and then name the different access methods housed there-in.
No, I have an Insert to a table where basically all the columns are nullable; some varchar, some smalldatetime.
When I submit an empty form, I'd like nulls to be entered. They're not and lots of various errors are thrown. What I ended up doing is subclassing the ObjectDataSource to gain access to the Inserting event. (subclassed for reusability) In the Inserting event, I looped through the InputParameters, and if it was a string and == "", I set it to null. Also, you cannot set ConvertNullToDBNull to true; that causes the strings to fail. This successfully allowed the Nullable to remain null.