After querying for Account sObjects, I'm adding all the fields into a List. The problem is that some Account sObjects have certain fields and others do not. While adding the fields to my list, I'd like to be able to add field if it exists OR add a default string.
Let's go through the example.
My query:
List<Account> accountQuery = [SELECT name, (SELECT name, id FROM Contacts) FROM Account];
My map:
Map<String, List<String>> Result = new Map<String, List<String>>();
Iterating through the queryResult and saving the values:
For(Account i : accountQuery){
String[] temp = new list<string>();
temp.add(i.name)
//Now loop through contacts subquery
if(!i.contacts.isEmpty()){
for(contact j : i.Contacts){
temp.add(j.name || 'No Contact Name Associated'); //Doesn't work
temp.add(j.id || 'No Contact Id Associated');
}
}
else{
temp.add('No Contact Name Associated');
temp.add('No Contact Id Associated');
}
};
How can I achieve this temp.add(value || 'default value')?
Thank you!
What is the purpose of these manipulation with these strings? What do you need to do? I really can't to imagine any use case for this code and I guess that your task might be completed in more convenient way.
Anyway the answer to your question is using ternary operator - ?:
tmp.add(j.name != null ? j.name : 'No Contact Name Associated');
Related
Please look at this case:
if (product.ProductId == 0)
{
product.CreateDate = DateTime.UtcNow;
product.EditDate = DateTime.UtcNow;
context.Products.Add(product);
if (!string.IsNullOrEmpty(product.ProductValueProduct)) { SaveProductValueProduct(product); }
}
context.SaveChanges();
When I debug code the ProductId is negative, but afer save the ProductId is corect in database (I know this is normal), but when I want to use it here: SaveProductValueProduct(product) after add to context.Products.Add(product); ProductId behaves strangely. (I'm creating List inside SaveProductValueProduct)
List<ProductValueProductHelper> pvpListToSave = new List<ProductValueProductHelper>();
foreach (var item in dProductValueToSave)
{
ProductValueProductHelper pvp = new ProductValueProductHelper();
pvp.ProductId = (item.Value.HasValue ? item.Value : product.ProductId).GetValueOrDefault();
pvp.ValueId = Convert.ToInt32(item.Key.Remove(item.Key.IndexOf(",")));
pvp.ParentProductId = (item.Value.HasValue ? product.ProductId : item.Value);
pvpListToSave.Add(pvp);
}
I want to use ProductId for relationship. Depends on logic I have to save ProductId at ProductId column OR ProductId at ParentProductId column.
The ProductId 45 save corent at ProductId column (3rd row - this is a relationship), BUT not at ParentProductId (2nd row - this is just null able int column for app logic), although while debug I pass the same negative value from product.ProductId there.
QUESTION:
how can I pass correct ProductId to column that it isn't a relationship column
I just use SaveProductValueProduct(product) after SaveChanges (used SaveChanges twice)
if (product.ProductId == 0)
{
product.CreateDate = DateTime.UtcNow;
product.EditDate = DateTime.UtcNow;
context.Products.Add(product);
}
context.SaveChanges();
if (product.ProductId != 0)
{
if (!string.IsNullOrEmpty(product.ProductValueProduct)) { SaveProductValueProduct(product); }
context.SaveChanges();
}
I set this as an answer because it fixes the matter, but I am very curious if there is any other way to solve this problem. I dont like to use context.SaveChanges(); one after another.
I have a list of sObject elements. I want to remove the duplicate element having the same record name along with the original record .
Like suppose if I have a list of element having record names as
Chair1,Chair2,Chair3,Chair4,Chair5,Chair6,Chair7,Chair1,Chair2
I want to print a list having only the elements that have no duplicates.For this case I should get the list Chair3,Chair4,Chair5,Chair6,Chair7.
I am using the below code to achieve this functionality.But I am getting thw records as : Chair1,Chair2,Chair3,Chair4,Chair5,Chair6,Chair7.
In ideal case we should not get the records Chair1,Chair2 as these already have duplicate records.
List <Chair__c> chairList = [SELECT
ID,
Name
FROM Chair__c
ORDER BY Name ASC];
System.debug('chairListOrderbyName::'+chairList);
List <String> chairNameList = new List <String>();
for(Integer i = 0; i < chairList.size();i++) {
for(Integer j = 0;j < chairList.size();j++) {
if(chairList[i].Name.equalsIgnoreCase(chairList[j].Name) && i != j) {
chairList.remove(i);
chairList.remove(j);
}
}
}
System.debug('chairList::'+chairList);
If names is really all you need you could do it with pure SOQL using GROUP BY and HAVING. Something like
SELECT Name
FROM Chair__c
GROUP BY Name
HAVING COUNT(Id) = 1 // only unique entries
If you need full sObjects then I'd make a helper Set<String> and loop through results. If name isn't in the set - add it. But if it already is there -> remove it!
Actually let's make it Map, similar idea...
Map<Set, Chair__c> chairs = new Map<Set, Chair__c>();
for(Chair__c c : [SELECT ...]){
if(chairs.containsKey(c.Name)){
chairs.remove(c.Name);
} else {
chairs.put(c.Name, c);
}
}
System.debug(JSON.serializePretty(chairs));
System.debug(chairs.values());
Try using a Set<String> instead of List<String>.Refer below solution
List <Chair__c> chairList = [SELECT
ID,
Name
FROM Chair__c
ORDER BY Name ASC];
Set<String> chairNameSet = new Set<String>();
for(String item: chairList ) {
chairNameSet.add(item);
}
I dont get how to make it work.
I have:
a table partner with fields id and name
a table partner_address with two fields: id_partner and id_address
a table address with fields id and external key id_town which references town(id)
a table town with fields id, a name, and postal_code
I want to select all partners that are in towns with specific postal_code
This query works:
SELECT p.nom, v.nom
FROM partner p
JOIN partner_address pa
ON pa.id_partner=p.id
JOIN address a
ON pa.id_address = a.id
JOIN town t
ON a.id_town=t.id
WHERE t.postal_code='13480';
Now I want to "translate" it into Doctrine 2 full syntax, following the documentation.
So I've made a custom repository:
src/Society/Bundle/MyProjectBundle/Repository/PartnerRepository.php
In this repository, I'm trying to create the corresponding function:
<?php
namespace HQF\Bundle\PizzasBundle\Repository;
use Doctrine\ORM\EntityRepository;
class PartenaireRepository extends EntityRepository
{
/**
* Get all active partners from a given postal code.
*/
public function findAllActiveByCp($cp)
{
return $this->createQueryBuilder('p')
->where('p.dateVFin IS NULL')
->andWhere('p.cp=:cp')
->addOrderBy('p.cp', 'DESC')
->setParameter('cp', $cp);
}
}
Nota: the query in the code is not the right one but this code works in another custom repository I've made, so I'm trying to start from this code.
I'm trying something like this but it doesn't work:
public function findAllActiveByCp($cp)
{
$qb = $this->createQueryBuilder('p');
return $qb
->leftJoin('partner_address pa ON pa.id_partner=p.id')
->leftJoin('address a ON pa.id_address = a.id')
->leftJoin('town t ON a.id_ville=t.id')
->where('p.dateVFin IS NULL')
->andWhere('t.cp=:cp')
->addOrderBy('t.cp', 'DESC')
->setParameter('cp', $cp);
}
I get this error:
Warning: Missing argument 2 for Doctrine\ORM\QueryBuilder::leftJoin(),
called in
/blabla/Repository/PartenaireRepository.php
on line 18 and defined in
/blabla/symfony/vendor/doctrine/orm/lib/Doctrine/ORM/QueryBuilder.php
line 767
You have to join only properties, that the selected entity have.
In first parameter of join() or leftJoin() or xxxJoin() you pass the attribute name related to selected object, and in the second - alias for joined entity.
Try similar to this:
$q = $this->em()->createQueryBuilder();
$q->select(['item', 'itemContact'])
->from('ModuleAdmin\Entity\CustomerEntity', 'item')
->leftJoin('item.contacts', 'itemContact')
->andWhere($q->expr()->like('item.name', ':customerNameStart'));
Of course, the CustomerEntity contains OneToMany relation in field contacts.
Remember, that in select statement you have to select the root entity (in my example CustomerEntity aliased as item).
Edit by Olivier Pons to add how I found out the solution, and to mark this answer as valid, because it put me on the right track, thank you Adam!
In the file PartenaireRepository.php I've used the createQueryBuilder('p') properly. Here's how to make two joins in a row, using createQueryBuilder():
class PartenaireRepository extends EntityRepository
{
/**
* Retrieval of all partners given for a given postal code.
*/
public function findAllActiveByCp($cp)
{
return $this->createQueryBuilder('p')
->leftJoin('p.adresses', 'a')
->leftJoin('a.ville', 'v')
->where('v.cp=:cp')
->setParameter('cp', $cp);
... blabla
}
}
I believe for what you're doing, you will need to provide four arguments to the leftJoin method.
->leftJoin('partner_address', 'pa', 'ON', 'pa.id_partner = p.id')
So your query builder chain should look like this
public function findAllActiveByCp($cp)
{
$qb = $this->createQueryBuilder('p');
return $qb
->leftJoin('partner_address', 'pa', 'ON', 'pa.id_partner = p.id')
->leftJoin('address', 'a', 'ON', 'pa.id_address = a.id')
->leftJoin('town', 't', 'ON', 'a.id_ville = t.id')
->where('p.dateVFin IS NULL')
->andWhere('t.cp=:cp')
->addOrderBy('t.cp', 'DESC')
->setParameter('cp', $cp)
;
}
Using cfscript, trying to set the ID of the newly inserted question so that I can use it in my answer insert to build the relationship. I've done this a million times outside of cfscript. setName seems to be the proper method to call to create the query name.
I'm receiving the error that "theQuestionID" does not exist in qryQuestion
i = 1;
while ( structKeyExists( form, "question" & i ) )
{
q = new Query();
q.setDatasource("kSurvey");
q.setName("qryQuestion");
q.setSQL("
set nocount on
insert into question (question)
values('#form["question#i#"]#')
select ##IDENTITY AS theQuestionID
set NOCOUNT off
");
q.execute();
writeOutput("Question"&i&"<br>");
j = 1;
while ( structKeyExists( form, "question" & i & "_answer" & j) ) {
q = new Query();
q.setDatasource("kSurvey");
q.setSQL("
insert into answer (answer,questionid)
values('#form["question#i#_answer#j#"]#',#qryQuestion.theQuestionID#)
");
q.execute();
writeOutput("Answer"&j&"<br>");
j++;
}
i++;
}
Theres a better way to accomplish this without having to select ##identity (which in itself isn't the best way to get it from sql server, using scope_identity is the best practice way to do this in sql server. http://msdn.microsoft.com/en-us/library/ms190315.aspx
Fortunately ColdFusion makes this even easier:
<cfscript>
insertQuery = new query();
insertQuery.setDatasource("datasourcename");
insertQuery.setSql("insert into contact(firstname, lastname)
values('ryan','anklam')");
result = insertQuery.Execute();
theKey = result.getPrefix().generatedkey;
</cfscript>
I'm trying to use an in-memory SQLite database to test my data layer which is provided by NHibernate.
I've read a load of blogs and articles about getting this setup but I'm now very confused as to why it isn't working.
The problem - when I run a unit test I get the error 'no such table: Student'. The articles I've read suggest this is because the schema isn't getting generated, or, the connection is being closed between my SchemaExport and query. I've checked everywhere I can think of and can't see how either of these scenarios are occuring.
My test output log looks like this:
OPEN CONNECTION
drop table if exists "Student"
drop table if exists "Tutor"
create table "Student" (
ID integer,
Name TEXT,
DoB DATETIME,
TutorId INTEGER,
primary key (ID)
)
create table "Tutor" (
ID integer,
Name TEXT,
primary key (ID)
)
NHibernate: INSERT INTO "Student" (Name, DoB, TutorId) VALUES (#p0, #p1, #p2); select last_insert_rowid();#p0 = 'Text1', #p1 = 01/12/2010 14:55:05, #p2 = NULL
14:55:05,750 ERROR [TestRunnerThread] AbstractBatcher [(null)]- Could not execute query: INSERT INTO "Student" (Name, DoB, TutorId) VALUES (#p0, #p1, #p2); select last_insert_rowid()
System.Data.SQLite.SQLiteException (0x80004005): SQLite error
no such table: Student
at System.Data.SQLite.SQLite3.Prepare(String strSql, SQLiteStatement previous, String& strRemain)
at System.Data.SQLite.SQLiteCommand.BuildNextCommand()
at System.Data.SQLite.SQLiteCommand.GetStatement(Int32 index)
at System.Data.SQLite.SQLiteDataReader.NextResult()
at System.Data.SQLite.SQLiteDataReader..ctor(SQLiteCommand cmd, CommandBehavior behave)
at System.Data.SQLite.SQLiteCommand.ExecuteReader(CommandBehavior behavior)
at System.Data.SQLite.SQLiteCommand.ExecuteDbDataReader(CommandBehavior behavior)
at System.Data.Common.DbCommand.System.Data.IDbCommand.ExecuteReader()
at NHibernate.AdoNet.AbstractBatcher.ExecuteReader(IDbCommand cmd)
14:55:05,781 ERROR [TestRunnerThread] ADOExceptionReporter [(null)]- SQLite error
no such table: Student
DISPOSE
CLOSING CONNECTION
Originally I was using my own code for the connection/session management but have moved to the code in this blog post translated to C# and with a couple changes to the DBConfig method and some debug statements to show the state of the connection.
private FluentNHibernate.Cfg.Db.IPersistenceConfigurer GetDBConfig()
{
return SQLiteConfiguration.Standard
.ConnectionString((ConnectionStringBuilder cs) => cs.Is(CONNECTION_STRING))
.ProxyFactoryFactory("NHibernate.ByteCode.LinFu.ProxyFactoryFactory, NHibernate.ByteCode.LinFu")
.Raw("connection.release_mode", "on_close");
}
I added the on_close after reading this
My test code looks like this:
[Test]
public void CanGetStudentById()
{
using (var scope = new SQLiteDatabaseScope<StudentMapping>())
{
using (ISession sess = scope.OpenSession())
{
// Arrange
var repo = new StudentRepository();
repo.Save(new Student() { Name = "Text1", DoB = DateTime.Now });
// Act
var student = repo.GetById(1);
// Assert
Assert.IsNotNull(student);
Assert.AreEqual("Text1", student.Name);
}
}
}
What have I overlooked here?
Update: I created a copy of the class that connects to an SQLite file DB and it worked fine. So it has to be something to do with the connection being closed.
If you change your test method to the following, does it work?
[Test]
public void CanGetStudentById()
{
using (var scope = new SQLiteDatabaseScope<StudentMapping>())
{
using (ISession sess = scope.OpenSession())
{
// Arrange
sess.Save(new Student() { Name = "Text1", DoB = DateTime.Now });
// Act
var student = sess.Get<Student>(1);
// Assert
Assert.IsNotNull(student);
Assert.AreEqual("Text1", student.Name);
}
}
}
I would hazard to guess that your StudentRepository is opening its own session and hence doesn't see the table.