[ 
https://issues.apache.org/jira/browse/OLINGO-1254?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Fernando Mendel updated OLINGO-1254:
------------------------------------
    Description: 
Hey,

We are using the following dependencies from Olingo: 
{code:xml}
<dependency>
<groupId>org.apache.olingo</groupId>
<artifactId>olingo-odata2-api</artifactId>
<version>2.0.10</version>
</dependency>
<dependency>
<groupId>org.apache.olingo</groupId>
<artifactId>olingo-odata2-core</artifactId>
<version>2.0.10</version>
</dependency>
<dependency>
<groupId>org.apache.olingo</groupId>
<artifactId>olingo-odata2-jpa-processor-api</artifactId>
<version>2.0.10</version>
</dependency>
<dependency>
<groupId>org.apache.olingo</groupId>
<artifactId>olingo-odata2-api-annotation</artifactId>
<version>2.0.10</version>
</dependency>
<dependency>
<groupId>org.apache.olingo</groupId>
<artifactId>olingo-odata2-jpa-processor-core</artifactId>
<version>2.0.10</version>
</dependency>
{code}
 

When doing two assyncronous requests GET data from OData with different 
filters, sometimes it works, sometimes it does not.

Like below queries:
{code:java}
"http://localhost:8080/OData/V2/CareCorner.svc/PackageDTOMocks?%24filter=RecipientName%20eq%20'John%20Frank'"
"http://localhost:8080/OData/V2/CareCorner.svc/PackageDTOMocks?%24filter=RecipientName%20eq%20'Karl%20Mendel'"
{code}
The behavior is a bit non deterministic, I already have seen the following 
behaviors:
 * Return the first filter result twice
 * Null pointer
 * The following exception:
{code:java}
{"httpStatus":"INTERNAL_SERVER_ERROR","exceptionKey":"Exception(org.hibernate.QueryException)","exceptionMessage":"An
 unhandled exception happened: Not all named parameters have been set: [2] 
[SELECT E1 FROM PackageDTOMock E1 WHERE (E1.recipientName = ?2)]."}
{code}

I have generated the following test code in javascript:
{code:javascript}
function prepareData(sUrl){ var xhr = new XMLHttpRequest(); xhr.withCredentials 
= true; xhr.addEventListener("readystatechange", function () { if 
(this.readyState === this.DONE) { console.log(this.responseText); } }); 
xhr.open("GET", sUrl); xhr.setRequestHeader("authorization", "Basic 
YWRtaW46YWRtaW4="); return xhr; }
 
a = 
prepareData("http://localhost:8080/OData/V2/CareCorner.svc/PackageDTOMocks?%24filter=RecipientName%20eq%20'Karl%20Mendel'");
 
b = 
prepareData("http://localhost:8080/OData/V2/CareCorner.svc/PackageDTOMocks?%24filter=RecipientName%20eq%20'John%20Frank'");
 
 
a.send(null); 
b.send(null);
{code}
The issue seems to lie on class *JPAQueryBuilder*, method *buildQuery*.
 The parameter *parameterizedMap* is filled from an static method 
_getParameterizedQueryMap_().
{code:java}
    Map<String, Map<Integer, Object>> parameterizedMap = 
ODataParameterizedWhereExpressionUtil.
        getParameterizedQueryMap();
{code}
 

I'm setting this as critical because we are facing this in two different 
projects and there is no way to release Olingo in an production application 
with this issue when sending parallel requests.

  was:
Hey,

we are using the following dependencies from Olingo: 

 
{code:java}
<dependency>
<groupId>org.apache.olingo</groupId>
<artifactId>olingo-odata2-api</artifactId>
<version>2.0.10</version>
</dependency>
<dependency>
<groupId>org.apache.olingo</groupId>
<artifactId>olingo-odata2-core</artifactId>
<version>2.0.10</version>
</dependency>
<dependency>
<groupId>org.apache.olingo</groupId>
<artifactId>olingo-odata2-jpa-processor-api</artifactId>
<version>2.0.10</version>
</dependency>
<dependency>
<groupId>org.apache.olingo</groupId>
<artifactId>olingo-odata2-api-annotation</artifactId>
<version>2.0.10</version>
</dependency>
<dependency>
<groupId>org.apache.olingo</groupId>
<artifactId>olingo-odata2-jpa-processor-core</artifactId>
<version>2.0.10</version>
</dependency>
{code}
 

One servlet is declared and is working fine:

 
{code:java}
@Bean 
public ODataServlet odataServlet() { 
   return new ODataServlet(); 
} 
@Bean
public ServletRegistrationBean odataServletRegistrationBean(){
   ServletRegistrationBean servlet = new 
ServletRegistrationBean(odataServlet(),"/OData/V2/CareCorner.svc/*"); 
   servlet.setLoadOnStartup(3); 
   servlet.addInitParameter("javax.ws.rs.Application",  
"org.apache.olingo.odata2.core.rest.app.ODataApplication"); 
   servlet.addInitParameter("org.apache.olingo.odata2.service.factory", 
jpaFactoryClass); 
   return servlet; 
}
{code}
 

 

When doing two assyncronous requests to GET data from OData, sometimes it 
works, sometimes it does not.

I have generated the following test code in javascript:
{code:java}
function prepareData(sUrl){ var xhr = new XMLHttpRequest(); xhr.withCredentials 
= true; xhr.addEventListener("readystatechange", function () { if 
(this.readyState === this.DONE) { console.log(this.responseText); } }); 
xhr.open("GET", sUrl); xhr.setRequestHeader("authorization", "Basic 
YWRtaW46YWRtaW4="); return xhr; }
 
a = 
prepareData("http://localhost:8080/OData/V2/CareCorner.svc/PackageDTOMocks?%24filter=RecipientName%20eq%20'Karl%20Mendel'");
 
b = 
prepareData("http://localhost:8080/OData/V2/CareCorner.svc/PackageDTOMocks?%24filter=RecipientName%20eq%20'John%20Frank'");
 
 
a.send(null); 
b.send(null);
{code}
 

it sends two get requests with different filters.

 

sometimes it returns the appropriate response, which is the response from both 
requests:
{code:java}
<?xml version="1.0" encoding="utf-8"?><feed xmlns="http://www.w3.org/2005/Atom"; 
xmlns:m="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata"; 
xmlns:d="http://schemas.microsoft.com/ado/2007/08/dataservices"; 
xml:base="http://localhost:8080/OData/V2/CareCorner.svc/";><id>http://localhost:8080/OData/V2/CareCorner.svc/PackageDTOMocks</id><title
 
type="text">PackageDTOMocks</title><updated>2018-04-03T13:32:31.059Z</updated><author><name></name></author><link
 href="PackageDTOMocks" rel="self" 
title="PackageDTOMocks"></link><entry><id>http://localhost:8080/OData/V2/CareCorner.svc/PackageDTOMocks('794687096865')</id><title
 
type="text">PackageDTOMocks</title><updated>2018-04-03T13:32:31.059Z</updated><category
 term="LocalPersistenceUnit.PackageDTOMock" 
scheme="http://schemas.microsoft.com/ado/2007/08/dataservices/scheme";></category><link
 href="PackageDTOMocks('794687096865')" rel="edit" 
title="PackageDTOMock"></link><content 
type="application/xml"><m:properties><d:AdultSignatureRequired>false</d:AdultSignatureRequired><d:DangerousGood>true</d:DangerousGood><d:RecipientName>John
 
Frank</d:RecipientName><d:ShippingType>EXPRESS</d:ShippingType><d:TrackingNumber>794687096865</d:TrackingNumber></m:properties></content></entry></feed>
{code}
 

and sometimes it generates an error:
{code:java}
{"httpStatus":"INTERNAL_SERVER_ERROR","exceptionKey":"Exception(org.hibernate.QueryException)","exceptionMessage":"An
 unhandled exception happened: Not all named parameters have been set: [2] 
[SELECT E1 FROM PackageDTOMock E1 WHERE (E1.recipientName = ?2)]."}
{code}
 

I'm setting this as critical because there is no way to release Olingo in an 
production application with this issue when sending parallel requests.


> Issue when sending requests in parallel
> ---------------------------------------
>
>                 Key: OLINGO-1254
>                 URL: https://issues.apache.org/jira/browse/OLINGO-1254
>             Project: Olingo
>          Issue Type: Bug
>          Components: odata2-jpa
>            Reporter: Fernando Mendel
>            Priority: Critical
>
> Hey,
> We are using the following dependencies from Olingo: 
> {code:xml}
> <dependency>
> <groupId>org.apache.olingo</groupId>
> <artifactId>olingo-odata2-api</artifactId>
> <version>2.0.10</version>
> </dependency>
> <dependency>
> <groupId>org.apache.olingo</groupId>
> <artifactId>olingo-odata2-core</artifactId>
> <version>2.0.10</version>
> </dependency>
> <dependency>
> <groupId>org.apache.olingo</groupId>
> <artifactId>olingo-odata2-jpa-processor-api</artifactId>
> <version>2.0.10</version>
> </dependency>
> <dependency>
> <groupId>org.apache.olingo</groupId>
> <artifactId>olingo-odata2-api-annotation</artifactId>
> <version>2.0.10</version>
> </dependency>
> <dependency>
> <groupId>org.apache.olingo</groupId>
> <artifactId>olingo-odata2-jpa-processor-core</artifactId>
> <version>2.0.10</version>
> </dependency>
> {code}
>  
> When doing two assyncronous requests GET data from OData with different 
> filters, sometimes it works, sometimes it does not.
> Like below queries:
> {code:java}
> "http://localhost:8080/OData/V2/CareCorner.svc/PackageDTOMocks?%24filter=RecipientName%20eq%20'John%20Frank'"
> "http://localhost:8080/OData/V2/CareCorner.svc/PackageDTOMocks?%24filter=RecipientName%20eq%20'Karl%20Mendel'"
> {code}
> The behavior is a bit non deterministic, I already have seen the following 
> behaviors:
>  * Return the first filter result twice
>  * Null pointer
>  * The following exception:
> {code:java}
> {"httpStatus":"INTERNAL_SERVER_ERROR","exceptionKey":"Exception(org.hibernate.QueryException)","exceptionMessage":"An
>  unhandled exception happened: Not all named parameters have been set: [2] 
> [SELECT E1 FROM PackageDTOMock E1 WHERE (E1.recipientName = ?2)]."}
> {code}
> I have generated the following test code in javascript:
> {code:javascript}
> function prepareData(sUrl){ var xhr = new XMLHttpRequest(); 
> xhr.withCredentials = true; xhr.addEventListener("readystatechange", function 
> () { if (this.readyState === this.DONE) { console.log(this.responseText); } 
> }); xhr.open("GET", sUrl); xhr.setRequestHeader("authorization", "Basic 
> YWRtaW46YWRtaW4="); return xhr; }
>  
> a = 
> prepareData("http://localhost:8080/OData/V2/CareCorner.svc/PackageDTOMocks?%24filter=RecipientName%20eq%20'Karl%20Mendel'");
>  
> b = 
> prepareData("http://localhost:8080/OData/V2/CareCorner.svc/PackageDTOMocks?%24filter=RecipientName%20eq%20'John%20Frank'");
>  
>  
> a.send(null); 
> b.send(null);
> {code}
> The issue seems to lie on class *JPAQueryBuilder*, method *buildQuery*.
>  The parameter *parameterizedMap* is filled from an static method 
> _getParameterizedQueryMap_().
> {code:java}
>     Map<String, Map<Integer, Object>> parameterizedMap = 
> ODataParameterizedWhereExpressionUtil.
>         getParameterizedQueryMap();
> {code}
>  
> I'm setting this as critical because we are facing this in two different 
> projects and there is no way to release Olingo in an production application 
> with this issue when sending parallel requests.



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