Can I pass Model as an argument in a method using ActiveJDBC?
Something like this:
public Set<String> getColNames(Model modelName){
Set<String> set = modelName.attributeNames();
for(String x: set){
System.out.prtinln(x);
}
return set;
}
That way I can just pass the model and would save a lot of time on doing the same code on each Model right?
Like this:
Staff staff = new Staff();
Set<String> set = getColNames(staff);
Is this possible??? Getting the attribute names is just an great example on this, this is not only the purpose why I asked this.
Help would be appreciated!
If you could explain why you need this, it would be easier to give directions.
In any case, you can do this with one line of code;
Map values = model.toMap();
See: Model#toMap()
I think that what Igor means, is that you can build your own static method, on a class called Util. This method would be something like this.
public static Set<String > getColNames(Model model) {
return model.toMap().keySet();
}
Then, you can use it like this:
Staff staff = new Staff();
Set<String> set = Util.getColNames(staff);
Related
I was searching for answears but I couldn't find it. It might be a beginner question, anyhow I am stuck.
What I am trying to write is a test in Apex. Basically the Apex code gets field names from one specific object. Each fieldname will be shown in a picklist, one after the other (that part is a LWC JS and HTML file).
So, only want to test the Apex for the moment.
I don't know how to check that a list contains 2 parameters, and those parameters are object and field. Then the values are correctly returned, and I don't know how to continue.
Here's the Apex class with the method, which I want to test.
public without sharing class LeadController {
public static List <String> getMultiPicklistValues(String objectType, String selectedField) {
List<String> plValues = new List<String>();
Schema.SObjectType convertToObj = Schema.getGlobalDescribe().get(objectType);
Schema.DescribeSObjectResult objDescribe = convertToObj.getDescribe();
Schema.DescribeFieldResult objFieldInfo = objDescribe.fields.getMap().get(selectedField).getDescribe();
List<Schema.PicklistEntry> picklistvalues = objFieldInfo.getPicklistValues();
for(Schema.PicklistEntry plv: picklistvalues) {
plValues.add(plv.getValue());
}
plValues.sort();
return plValues;
}
}
I welcome any answers.
Thank you!
This might be a decent start, just change the class name back to yours.
#isTest
public class Stack73155432Test {
#isTest
public static void testHappyFlow(){
List<String> picklistValues = Stack73155432.getMultiPicklistValues('Lead', 'LeadSource');
// these are just examples
System.assert(!picklistValues.isEmpty(), 'Should return something');
System.assert(picklistValues.size() > 5, 'At least 5 values? I dunno, whatever is right for your org');
System.assert(picklistValues[0] < picklistValues[1], 'Should be sorted alphabetically');
System.assert(picklistValues.contains('Web'), 'Or whatever values you have in the org');
}
#isTest
public static void testErrorFlow(){
// this is actually not too useful. You might want to catch this in your main code and throw AuraHandledExceptions?
try{
Stack73155432.getMultiPicklistValues('Account', 'AsdfNoSuchField');
System.assert(false, 'This should have thrown');
} catch(NullPointerException npe){
System.assert(npe.getMessage().startsWith('Attempt to de-reference a null object'), npe.getMessage());
}
}
}
Is there any API using which I can get graphTraversalName to graphName mapping defined in the script?
I am using the below messy code but it's error-prone if both graphs are using the same underlying storage.
Map<String, String> graphTraversalToNameMap = new ConcurrentHashMap<String, String>();
while(traversalSourceIterator.hasNext()){
String traversalSource = traversalSourceIterator.next();
String currentGraphString = ( (GraphTraversalSource) graphManager.getAsBindings().get(traversalSource)).getGraph().toString();
graphNameTraversalMap.put(currentGraphString, traversalSource);
}
Iterator<String> graphNamesIterator = graphManager.getGraphNames().iterator();
while(graphNamesIterator.hasNext()){
String graphName = graphNamesIterator.next();
String currentGraphString = graphManager.getGraph(graphName).toString();
String traversalSource = graphNameTraversalMap.get(currentGraphString);
graphTraversalToNameMap.put(traversalSource, graphName);
}
Does gremlinExecutor.getScriptEngineManager().getBindings().entrySet() provide order guarantee? I can iterate over this and populate my map
Is there any API using which I can get graphTraversalName to graphName mapping defined in the script?
No. They share the same namespace in Gremlin Server so the relationship gets lost programmatically. You would need to do something like what you are doing but I wouldn't rely on toString() of a Graph for equality. Perhaps use the Graph instance itself? Although that might not work either depending on your situation and what you want for equality as you could have two different Graph configurations pointed at the same data and want to resolve those as the same graph. I'm also not sure that any approach will work generally for all graph systems. Anyway, I think I'd experiment with using Map<Graph, String> graphTraversalToNameMap for your case and see how that goes.
Does gremlinExecutor.getScriptEngineManager().getBindings().entrySet() provide order guarantee?
No as it is backed by a ConcurrentHashMap. You would have to provide your own order.
Underlying storage details can be obtained from the configuration object and can be used for the mapping, sample code:
public class GraphTraversalMappingUtil {
public static void populateGraphTraversalToNameMapping(GraphManager graphManager){
if(graphTraversalToNameMap.size() != 0){
return;
}
Iterator<String> traversalSourceIterator = graphManager.getTraversalSourceNames().iterator();
Map<StorageBackendKey, String> storageKeyToTraversalMap = new HashMap<StorageBackendKey, String>();
while(traversalSourceIterator.hasNext()){
String traversalSource = traversalSourceIterator.next();
StorageBackendKey key = new StorageBackendKey(
graphManager.getTraversalSource(traversalSource).getGraph().configuration());
storageKeyToTraversalMap.put(key, traversalSource);
}
Iterator<String> graphNamesIterator = graphManager.getGraphNames().iterator();
while(graphNamesIterator.hasNext()) {
String graphName = graphNamesIterator.next();
StorageBackendKey key = new StorageBackendKey(
graphManager.getGraph(graphName).configuration());
graphTraversalToNameMap.put(storageKeyToTraversalMap.get(key), graphName);
}
}
}
For full code, refer: https://pastebin.com/7m8hi53p
I am to using the CacheJdbcPojoStoreFactory
I want to have a VARCHAR field in the database which maps to an Enum in Java.
The way I am trying to achieve this is something like the following. I want the application code to work with the enum, but the persistence to use the string so that it is human readable in the database. I do not want to use int values in the database.
This seems to work fine for creating new objects, but not for reading them out. It seems that it tries to set the field directly, and the setter (setSideAsString) is not called. Of course there is no field called sideAsString. Should this work? Any suggestions?
Here is the code excerpt
In some application code I would do something like
trade.setSide(OrderSide.Buy)
And this will persist fine. I can read "Buy" in the side column as a VARCHAR.
In Trade
private OrderSide side; // OrderSide is an enum with Buy,Sell
public OrderSide getSide() {
return side;
}
public void setSide(OrderSide side) {
this.side = side;
}
public String getSideAsString() {
return this.side.name();
}
public void setSideAsString(String s) {
this.side = OrderSide.valueOf(s);
}
Now when configuring the store, I do this
Collection<JdbcTypeField> vals = new ArrayList<>();
vals.add(new JdbcTypeField(Types.VARCHAR, "side", String.class, "sideAsString"));
After a clean start, If I query Trade using Ignite SQL query, and call trade.getSide() it will be null. Other (directly mapped) columns are fine.
Thanks,
Gordon
BinaryMarshaller deserialize only fields which used in query.
Please try to use OptimizedMarshaller:
IgniteConfiguration cfg = new IgniteConfiguration();
...
cfg.setMarshaller(new OptimizedMarshaller());
Here's the ticket for support enum mapping in CacheJdbcPojoStore.
MVC 4
I have an action that is decorated with an action filter like this:
[ViewPermission(PermissionType.GlobalUser)]
public ActionResult General()
{
var permissionType = // trying to access the value passed to the filter ie. PermissionType.GlobalUser value
return View();
}
Is there a way to get the properties from the acation filter inside the action itself?
Thanks in advance.
So the quick answer is yes, you can do it doing something like this:
[ViewPermission(PermissionType.GlobalUser)]
public ActionResult General()
{
var type = GetType(this);
var method = type.GetMethod("General");
var attribute(typeof(ViewPermission));
var permissionType = attribute.PermissionType;
return View();
}
With that said, it is NOT a good idea. Doing reflection is slow. Very slow. You would see performance problems. If you really need to do this, then it is best to figure out a way to do it during initialization of the app, where performance is not as much of a concern.
Hope that helps.
I wanted to take advantage of built-in content negotiator and just get access to decision what formatter is going to be used. I don't want to use Request.Headers.Accept and check for whether it is json or xml content type because there lot of things are involved in that decision. Is there a way I can check at controller level or override any class that tells me what formatter going to be used OR what request content type is?
thanks in advance.
You can run conneg manually:
var conneg = Configuration.Services.GetContentNegotiator();
var connegResult = conneg.Negotiate(
typeof(YOUR_TYPE), Request, Configuration.Formatters
);
And use the output whichever way you want:
//the valid media type
var mediaType = connegResult.MediaType;
//do stuff
//the relevant formatter
var formatter = connegResult.Formatter;
//do stuff
If you want to see what is going on then install a TraceWriter and you will see what the conneg does.
A TraceWriter looks something like:
public class TraceWriter : ITraceWriter {
public bool IsEnabled(string category, TraceLevel level) {
return true;
}
public void Trace(HttpRequestMessage request, string category, TraceLevel level, Action<TraceRecord> traceAction) {
var rec = new TraceRecord(request, category, level);
traceAction(rec);
Log(rec);
}
private void Log(TraceRecord record) {
Console.WriteLine(record.Message);
}
}
and is installed like this,
config.Services.Replace(typeof(ITraceWriter), new TraceWriter());
If you want to manually invoke conneg then you can use,
config.Services.GetContentNegotiator().Negotiate(...)
Tugberk has a blog on this. Have a look.