I'm getting all active countries via the service id country.repository
public function getCountries(Context $context): EntityCollection
{
$criteria = new Criteria();
$criteria->addFilter(new EqualsFilter('active', true));
return $this->countryRepository->search($criteria, $context)->getEntities();
}
This gives me this CountryCollection:
How can I access each element to get the id and the name?
I tried to loop over
public function test($context): array
{
$countryIds = $this->getCountries($context);
$ids = [];
foreach ($countryIds as $countryId) {
$ids[] = $countryId['id'];
}
return $ids;
}
Obviously this doesn't work. It gives this error:
Cannot use object of type Shopware\Core\System\Country\CountryEntity
as array
If you are only interested in the ids of the countries you can use
$criteria = new Criteria();
$criteria->addFilter(new EqualsFilter('active', true));
$ids = $this->countryRepository->searchIds($criteria, $context)->getIds();
searchIds() will only return the ids of the entities and not all of their properties, the benefit is that not all values have to be loaded from the DB and hydrated, therefore searchIds() is faster then the normal search().
You need to call the function like this
public function test($context): array
{
$countries = $this->getCountries($context);
$ids = [];
foreach ($countries as $country) {
$ids[] = $country->getId();//or $country->getName()
}
return $ids;
}
Usually you need to open the entity file. In your case it is CountryEntity.php to check the function to get the id or other fields there.
Related
I'm trying to get a Product with his parent by product ID and I have this code:
/**
* #param string[] $ids
* #return ProductCollection|EntityCollection
*/
public function getProductsByIds(array $ids): ProductCollection
{
$criteria = new Criteria($ids);
$criteria->addAssociation('parent');
return $this->productRepository
->search($criteria, Context::createDefaultContext())
->getEntities();
}
But the problem is when I'm running this code:
$products = $this->productService->getProductsByIds([$id]);
$product = $products->first();
dd($product->getParent());
I'm getting null every time.
How can I get a Product parent and where can I read more about the 'paths' for the Association method?
When you execute your method you get EntityCollection, and not Single entity as result. So you should use the following code:
$products = $this->productService->getProductByIds([$id]);
foreach($products as $product) {
dd($product->getParent());
}
And make sure that your products have parents of course:)
On the 6.3.4.0 version of Shopware, I'm getting the error 400 now.
It is not possible to read the parent association directly. Please read the parents via a separate call over the repository
So I have removed Association and created a separate method to fetch one Product with a parent.
public function getProductById(?string $id): ?ProductEntity
{
if ($id === null) {
return null;
}
$products = $this->getProductsByIds([$id]);
$product = $products->first();
$parentProductId = $product?->getParentId() ?? null;
$parentProduct = $this->getProductById($parentProductId);
if ($parentProduct !== null) {
$product->setParent($parentProduct);
}
return $product;
}
Basically I am trying to get pagination working when requesting entities of azure table storage. i.e. Press next button gets the next 10 entities & Press previous button gets the previous 10 entities. A relatively close example Gaurav Mantri's Answer. But my question is how do I get the nextPartitionKey and nextRowKey from a HTML button attribute and store in to a array/list in order to keep track of current page so I can get the next/previous items?Code example would be very appreciated.
Thanks!
This is something I have right now which gets a range of data based on pageNumber request
private async Task<List<UserInfo>> queryPage(CloudTable peopleTable, string item, int pageNumber)
{
// Construct the query operation for all customer entities
TableQuery<CustomerEntity> query = new TableQuery<CustomerEntity>().Where(TableQuery.GenerateFilterCondition("PartitionKey", QueryComparisons.Equal, item));
// Print the fields for each customer.
TableContinuationToken token = null;
//TodoItem data = new TodoItem();
List<UserInfo> data = new List<UserInfo>();
do
{
TableQuerySegment<CustomerEntity> resultSegment = await peopleTable.ExecuteQuerySegmentedAsync(query, token);
token = resultSegment.ContinuationToken;
foreach (CustomerEntity entity in resultSegment.Results)
{
data.Add(new UserInfo
{
// add data
});
}
} while (token != null);
//get a subset of all entity
List<UserInfo> sublist = data.GetRange(0, pageNumber);
return sublist;
}
Managed to solved the problem under Gaurav's help.
Here is the code, not perfect but works.
private async Task<List<UserInfo>> queryPage(CloudTable peopleTable, string item, string NextPartitionKey , string NextRowKey, int itemNumber)
{
// Construct the query operation for all customer entities
TableQuery<CustomerEntity> query = new TableQuery<CustomerEntity>().Where(TableQuery.GenerateFilterCondition("PartitionKey", QueryComparisons.Equal, item)).Take(itemNumber);
// Print the fields for each customer.
List<UserInfo> data = new List<UserInfo>();
Tabletoken.NextPartitionKey = NextPartitionKey;
Tabletoken.NextRowKey = NextRowKey;
TableQuerySegment<CustomerEntity> resultSegment = await peopleTable.ExecuteQuerySegmentedAsync(query, Tabletoken);
Tabletoken = resultSegment.ContinuationToken;
foreach (CustomerEntity entity in resultSegment.Results)
{
data.Add(new UserInfo
{
//add data
});
}
return data;
}
private TableContinuationToken Tabletoken = new TableContinuationToken();
and declare it use a tuple.
Tuple<List<UserInfo>, string, string > tuple =
new Tuple<List<UserInfo>, string, string>(data, Tabletoken.NextPartitionKey, Tabletoken.NextRowKey);
I have multiple entities to be stored in the same physical Azure table. I'm trying to Insert/Merge the table entries from a file. I'm trying to find a way to do this w/o really serializing each property or for that matter creating a custom entities.
While trying the following code, I thought maybe I could use generic DynamicTableEntity. However, I'm not sure if it helps in an insert operation (most documentation is for replace/merge operations).
The error I get is
HResult=-2146233088
Message=Unexpected response code for operation : 0
Source=Microsoft.WindowsAzure.Storage
Any help is appreciated.
Here's an excerpt of my code
_tableClient = storageAccount.CreateCloudTableClient();
_table = _tableClient.GetTableReference("CloudlyPilot");
_table.CreateIfNotExists();
TableBatchOperation batch = new TableBatchOperation();
....
foreach (var pkGroup in result.Elements("PartitionGroup"))
{
foreach (var entity in pkGroup.Elements())
{
DynamicTableEntity tableEntity = new DynamicTableEntity();
string partitionKey = entity.Elements("PartitionKey").FirstOrDefault().Value;
string rowKey = entity.Elements("RowKey").FirstOrDefault().Value;
Dictionary<string, EntityProperty> props = new Dictionary<string, EntityProperty>();
//if (pkGroup.Attribute("name").Value == "CloudServices Page")
//{
// tableEntity = new CloudServicesGroupEntity (partitionKey, rowKey);
//}
//else
//{
// tableEntity = new CloudServiceDetailsEntity(partitionKey,rowKey);
//}
foreach (var element in entity.Elements())
{
tableEntity.Properties[element.Name.ToString()] = new EntityProperty(element.Value.ToString());
}
tableEntity.ETag = Guid.NewGuid().ToString();
tableEntity.Timestamp = new DateTimeOffset(DateTime.Now.ToUniversalTime());
//tableEntity.WriteEntity(/*WHERE TO GET AN OPERATION CONTEXT FROM?*/)
batch.InsertOrMerge(tableEntity);
}
_table.ExecuteBatch(batch);
batch.Clear();
}
Have you tried using DictionaryTableEntity? This class allows you to dynamically fill the entity as if it were a dictionary (similar to DynamicTableEntity). I tried something like your code and it works:
var batch = new TableBatchOperation();
var entity1 = new DictionaryTableEntity();
entity1.PartitionKey = "abc";
entity1.RowKey = Guid.NewGuid().ToString();
entity1.Add("name", "Steve");
batch.InsertOrMerge(entity1);
var entity2 = new DictionaryTableEntity();
entity2.PartitionKey = "abc";
entity2.RowKey = Guid.NewGuid().ToString();
entity2.Add("name", "Scott");
batch.InsertOrMerge(entity2);
table.ExecuteBatch(batch);
var entities = table.ExecuteQuery<DictionaryTableEntity>(new TableQuery<DictionaryTableEntity>());
One last thing, I see that you're setting the Timestamp and ETag yourself. Remove these two lines and try again.
I'm trying to convert an IQueryable object to a DataTable. Here's an example of a query that I would like to convert to a DataTable:
var query = DbContext.SomeObjectSet.Select(x => new { PropertyName1 = x.ColumnName1, PropertyName2 = x.ColumnName2 });
Please note the anonymous object that is created in the Select method and the names of the properties:
new { PropertyName1 = x.ColumnName1, PropertyName2 = x.ColumnName2 }
After Googling this issue, I came across the following code that converts an IQueryable object to a DataTable:
public static DataTable EntityToDatatable(this IQueryable result)
{
ObjectQuery query = (result as ObjectQuery);
ObjectContext context = query.Context;
EntityConnection entityCon = (context.Connection as EntityConnection);
using (SqlConnection sqlCon = new SqlConnection(entityCon.StoreConnection.ConnectionString))
{
using (SqlCommand cmd = new SqlCommand(query.ToTraceString(), sqlCon))
{
foreach (var param in query.Parameters)
{
cmd.Parameters.AddWithValue(param.Name, param.Value);
}
using (SqlDataAdapter dataAdapter = new SqlDataAdapter(cmd))
{
using (DataTable dataTable = new DataTable())
{
dataAdapter.Fill(dataTable);
return dataTable;
}
}
}
}
}
The code above "works" and the SQL statement from the ToTraceString() method is as follows:
SELECT [Extent1].[ColumnName1] AS [ColumnName1], [Extent1].[ColumnName2] AS [ColumnName2] FROM [dbo].[TableName] AS [Extent1]
Problem: The column names of the SQL statement (i.e. columnName1 and columnName2) do not correspond to the names of the properties of the objects (i.e. PropertyName1 and PropertyName2) that would be materialized if a ToList() or AsEnumerable() method was called on the query. This wouldn't be so bad if the SQL statement columns were in the same order as the anonymous object properties...but, this is not always the case. Somewhere (I guess inside of the IQueryable object) there must be a mapping between the SQL statement column names and the resulting anonymous object property names.
Does anyone know how to get at this mapping?
I've managed to find a solution to my problem:
First, you need the following code (from How does Entity Framework manage mapping query result to anonymous type?) which maps the positions of my anonymous object properties to the SQL statement column position:
public static Int32[] GetPropertyPositions(this ObjectQuery query)
{
// get private ObjectQueryState ObjectQuery._state;
// of actual type internal class
// System.Data.Objects.ELinq.ELinqQueryState
Object queryState = GetProperty(query, "QueryState");
AssertNonNullAndOfType(queryState, "System.Data.Objects.ELinq.ELinqQueryState");
// get protected ObjectQueryExecutionPlan ObjectQueryState._cachedPlan;
// of actual type internal sealed class
// System.Data.Objects.Internal.ObjectQueryExecutionPlan
Object plan = GetField(queryState, "_cachedPlan");
AssertNonNullAndOfType(plan, "System.Data.Objects.Internal.ObjectQueryExecutionPlan");
// get internal readonly DbCommandDefinition ObjectQueryExecutionPlan.CommandDefinition;
// of actual type internal sealed class
// System.Data.EntityClient.EntityCommandDefinition
Object commandDefinition = GetField(plan, "CommandDefinition");
AssertNonNullAndOfType(commandDefinition, "System.Data.EntityClient.EntityCommandDefinition");
// get private readonly IColumnMapGenerator EntityCommandDefinition._columnMapGenerator;
// of actual type private sealed class
// System.Data.EntityClient.EntityCommandDefinition.ConstantColumnMapGenerator
Object columnMapGenerator = GetField(commandDefinition, "_columnMapGenerator");
AssertNonNullAndOfType(columnMapGenerator, "System.Data.EntityClient.EntityCommandDefinition+ConstantColumnMapGenerator");
// get private readonly ColumnMap ConstantColumnMapGenerator._columnMap;
// of actual type internal class
// System.Data.Query.InternalTrees.SimpleCollectionColumnMap
Object columnMap = GetField(columnMapGenerator, "_columnMap");
AssertNonNullAndOfType(columnMap, "System.Data.Query.InternalTrees.SimpleCollectionColumnMap");
// get internal ColumnMap CollectionColumnMap.Element;
// of actual type internal class
// System.Data.Query.InternalTrees.RecordColumnMap
Object columnMapElement = GetProperty(columnMap, "Element");
AssertNonNullAndOfType(columnMapElement, "System.Data.Query.InternalTrees.RecordColumnMap");
// get internal ColumnMap[] StructuredColumnMap.Properties;
// array of internal abstract class
// System.Data.Query.InternalTrees.ColumnMap
Array columnMapProperties = GetProperty(columnMapElement, "Properties") as Array;
AssertNonNullAndOfType(columnMapProperties, "System.Data.Query.InternalTrees.ColumnMap[]");
Int32 n = columnMapProperties.Length;
Int32[] propertyPositions = new Int32[n];
for (Int32 i = 0; i < n; ++i)
{
// get value at index i in array
// of actual type internal class
// System.Data.Query.InternalTrees.ScalarColumnMap
Object column = columnMapProperties.GetValue(i);
AssertNonNullAndOfType(column, "System.Data.Query.InternalTrees.ScalarColumnMap");
//string colName = (string)GetProp(column, "Name");
// can be used for more advanced bingings
// get internal int ScalarColumnMap.ColumnPos;
Object columnPositionOfAProperty = GetProperty(column, "ColumnPos");
AssertNonNullAndOfType(columnPositionOfAProperty, "System.Int32");
propertyPositions[i] = (int)columnPositionOfAProperty;
}
return propertyPositions;
}
static object GetProperty(object obj, string propName)
{
PropertyInfo prop = obj.GetType().GetProperty(propName, BindingFlags.NonPublic | BindingFlags.Instance);
if (prop == null) throw EFChangedException();
return prop.GetValue(obj, new object[0]);
}
static object GetField(object obj, string fieldName)
{
FieldInfo field = obj.GetType().GetField(fieldName, BindingFlags.NonPublic | BindingFlags.Instance);
if (field == null) throw EFChangedException();
return field.GetValue(obj);
}
static void AssertNonNullAndOfType(object obj, string fullName)
{
if (obj == null) throw EFChangedException();
string typeFullName = obj.GetType().FullName;
if (typeFullName != fullName) throw EFChangedException();
}
static InvalidOperationException EFChangedException()
{
return new InvalidOperationException("Entity Framework internals has changed, please review and fix reflection code");
}
Then I can modify the EntityToDatatable method as follows:
public static DataTable EntityToDatatable(this IQueryable query)
{
SqlConnection sqlConnection = null;
SqlCommand sqlCommand = null;
SqlDataAdapter sqlDataAdapter = null;
DataTable dataTable = null;
try
{
ObjectQuery objectQuery = (query as ObjectQuery);
ObjectContext objectContext = objectQuery.Context;
EntityConnection entityConnection = (objectContext.Connection as EntityConnection);
sqlConnection = new SqlConnection(entityConnection.StoreConnection.ConnectionString);
sqlCommand = new SqlCommand(objectQuery.ToTraceString(), sqlConnection);
foreach (var parameter in objectQuery.Parameters)
{
sqlCommand.Parameters.AddWithValue(parameter.Name, parameter.Value);
}
sqlDataAdapter = new SqlDataAdapter(sqlCommand);
dataTable = new DataTable();
sqlDataAdapter.Fill(dataTable);
// Get the mapping between the object property position and
// the SQL statment column position.
Int32[] propertyPositions = objectQuery.GetPropertyPositions();
// Create a column name to column position (ordinal) lookup.
Dictionary<String, Int32> mapColumnNameToColumnPosition = new Dictionary<string, int>();
// Populate the lookup.
for (Int32 i = 0; i < propertyPositions.Length; ++i)
{
mapColumnNameToColumnPosition.Add(dataTable.Columns[propertyPositions[i]].ColumnName, i);
}
// Get the object's property information.
PropertyInfo[] pi = query.GetType().GetGenericArguments()[0].GetProperties();
// Iterate through the lookup and change the position of the datatable columns.
// The order of the datatable columns will now correspond to the order of the object
// properties.
foreach (var map in mapColumnNameToColumnPosition)
{
// Change the column position.
dataTable.Columns[map.Key].SetOrdinal(map.Value);
// Change the column name.
dataTable.Columns[map.Key].ColumnName = pi[map.Value].Name;
}
return dataTable;
}
catch (Exception ex)
{
// Something went wrong and we're going to raise an exception...we
// might as well dispose of the datatable if it exists because it's
// not going to be used.
if (dataTable != null) dataTable.Dispose();
throw new Exception("IQueryable to DataTable conversion error.", ex);
}
finally
{
// Do some cleanup on objects that are no longer needed.
if (sqlDataAdapter != null) sqlDataAdapter.Dispose();
if (sqlCommand != null) sqlCommand.Dispose();
if (sqlConnection != null) sqlConnection.Dispose();
}
}
I am building an asp.net site in .net framework 4.0, and I am stuck at the method that supposed to call a .cs class and get the query result back here is my method call and method
1: method call form aspx.cs page:
helper cls = new helper();
var query = cls.GetQuery(GroupID,emailCap);
2: Method in helper class:
public IQueryable<VariablesForIQueryble> GetQuery(int incomingGroupID, int incomingEmailCap)
{
var ctx = new some connection_Connection();
ObjectSet<Members1> members = ctx.Members11;
ObjectSet<groupMember> groupMembers = ctx.groupMembers;
var query = from m in members
join gm in groupMembers on m.MemberID equals gm.MemID
where (gm.groupID == incomingGroupID) && (m.EmailCap == incomingEmailCap)
select new VariablesForIQueryble(m.MemberID, m.MemberFirst, m.MemberLast, m.MemberEmail, m.ValidEmail, m.EmailCap);
//select new {m.MemberID, m.MemberFirst, m.MemberLast, m.MemberEmail, m.ValidEmail, m.EmailCap};
return query ;
}
I tried the above code with IEnumerable too without any luck. This is the code for class VariablesForIQueryble:
3:Class it self for taking anonymouse type and cast it to proper types:
public class VariablesForIQueryble
{
private int _emailCap;
public int EmailCap
{
get { return _emailCap; }
set { _emailCap = value; }
}`....................................
4: and a constructor:
public VariablesForIQueryble(int memberID, string memberFirst, string memberLast, string memberEmail, int? validEmail, int? emailCap)
{
this.EmailCap = (int) emailCap;
.........................
}
I can't seem to get the query result back, first it told me anonymous type problem, I made a class after reading this: link text; and now it tells me constructors with parameters not supported. Now I am an intermediate developer, is there an easy solution to this or do I have to take my query back to the .aspx.cs page.
If you want to project to a specific type .NET type like this you will need to force the query to actually happen using either .AsEnumerable() or .ToList() and then use .Select() against linq to objects.
You could leave your original anonymous type in to specify what you want back from the database, then call .ToList() on it and then .Select(...) to reproject.
You can also clean up your code somewhat by using an Entity Association between Groups and Members using a FK association in the database. Then the query becomes a much simpler:
var result = ctx.Members11.Include("Group").Where(m => m.Group.groupID == incomingGroupID && m.EmailCap == incomingEmailCap);
You still have the issue of having to do a select to specify which columns to return and then calling .ToList() to force execution before reprojecting to your new type.
Another alternative is to create a view in your database and import that as an Entity into the Entity Designer.
Used reflection to solve the problem:
A: Query, not using custom made "VariablesForIQueryble" class any more:
//Method in helper class
public IEnumerable GetQuery(int incomingGroupID, int incomingEmailCap)
{
var ctx = new some_Connection();
ObjectSet<Members1> members = ctx.Members11;
ObjectSet<groupMember> groupMembers = ctx.groupMembers;
var query = from m in members
join gm in groupMembers on m.MemberID equals gm.MemID
where ((gm.groupID == incomingGroupID) && (m.EmailCap == incomingEmailCap)) //select m;
select new { m.MemberID, m.MemberFirst, m.MemberLast, m.MemberEmail, m.ValidEmail, m.EmailCap };
//select new VariablesForIQueryble (m.MemberID, m.MemberFirst, m.MemberLast, m.MemberEmail, m.ValidEmail, m.EmailCap);
//List<object> lst = new List<object>();
//foreach (var i in query)
//{
// lst.Add(i.MemberEmail);
//}
//return lst;
//return query.Select(x => new{x.MemberEmail,x.MemberID,x.ValidEmail,x.MemberFirst,x.MemberLast}).ToList();
return query;
}
B:Code to catch objects and conversion of those objects using reflection
helper cls = new helper();
var query = cls.GetQuery(GroupID,emailCap);
if (query != null)
{
foreach (var objRow in query)
{
System.Type type = objRow.GetType();
int memberId = (int)type.GetProperty("MemberID").GetValue(objRow, null);
string memberEmail = (string)type.GetProperty("MemberEmail").GetValue(objRow, null);
}
else
{
something else....
}