USE OF FINALIZE IN EJB'S

Hi
1//
I have a method that performs a delete statement on the database and this method is called inside ejbRemove(Stateful session bean).
How different is this from using a finalize method and in that giving a call to the method that performs the delete.
2//
we are using jboss server for deployment of our EJB's.The finalize method that we had put in the stateful session bean generates a warning "Finalize method not allowed here".Why is that so??
thx in advance

finalize() is clearly prohibited in the ejb. these kind of tasks are better left to container and you should rely on container call back methods. When the instance garbage collect, or when its finalize method is called etc are not visible to the client. Also container using inheritance or composition to wrap our bean instance. It may define the finalize there which may create problem if you also decide to give one.
there can be missed ejbRemove call in certain condition which the bean provider should handle. Missed ejbRemove call can happen in
1.Server crash
2.System exceptions
if the delete fn is critical then you should be ready to handle this situation.
--Ashwani

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PHP using soap to call EJB

Hello everybody,
I've a problem to call a EJB form a PHP script.
There is a Apache with PHP 5.2.0 and a SAP NetWeaver Application Server 7.10 / AS Java 7.10 running on the system.
I wanted to use soap to call a method in an EJB. It's only a test EJB:
[code]
package beans;
import javax.ejb.Stateless;
import javax.jws.WebService;
import javax.jws.WebMethod;
@WebService(name="HelloWorldEARBean",serviceName="HelloWorldEARBeanService",targetNamespace="http://beans/",portName="HelloWorldEARBeanPort") @Stateless public class HelloWorldEARBean {
@WebMethod public String sayHello(String testStr){
            return "Hello Mr. "+testStr;
@WebMethod public String getReturn(String inputStr){
            return "the return value is"+inputStr;
[/code]
I tried it with the PEAR SOAP in the following script:
[code]
<?php
require_once 'SOAP/Client.php';
$wsdl_url     = 'http://localhost:50000/HelloWorldEARBeanService/HelloWorldEARBean?wsdl';
$WSDL = new SOAP_WSDL($wsdl_url);
$client = $WSDL->getProxy();
$client->__trace(1);
$options=array('namespace' => 'http://beans/',
'style' => 'rpc',
'soapaction' => 'sayHello');
$NAME = "Bob";
$parameters=array(
     'parameters', $NAME
$result = $client->getReturn($parameters);
echo "<pre>";
print_r($params);
echo "</pre>";
echo "<h2>return</h2>";
echo "<pre>";
print_r($result);
echo "</pre>";
echo '<h2>Request</h2>';
echo '<pre>' . htmlspecialchars($client->__getlastrequest(), ENT_QUOTES) . '</pre>';
echo '<h2>Response</h2>';
echo '<pre>' . htmlspecialchars($client->__getlastresponse(), ENT_QUOTES). '</pre>';
?>
[/code]
The AS distributes the following WSDL:
[code]
- <wsdl:definitions xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" targetNamespace="http://beans/" xmlns:tns="http://beans/">
- <wsdl:types>
- <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" version="1.0" targetNamespace="http://beans/">
<xs:element name="getReturn" type="tns:getReturn" />
<xs:element name="getReturnResponse" type="tns:getReturnResponse" />
<xs:element name="sayHello" type="tns:sayHello" />
<xs:element name="sayHelloResponse" type="tns:sayHelloResponse" />
- <xs:complexType name="sayHello">
- <xs:sequence>
<xs:element name="arg0" type="xs:string" minOccurs="0" />
</xs:sequence>
</xs:complexType>
- <xs:complexType name="sayHelloResponse">
- <xs:sequence>
<xs:element name="return" type="xs:string" minOccurs="0" />
</xs:sequence>
</xs:complexType>
- <xs:complexType name="getReturn">
- <xs:sequence>
<xs:element name="arg0" type="xs:string" minOccurs="0" />
</xs:sequence>
</xs:complexType>
- <xs:complexType name="getReturnResponse">
- <xs:sequence>
<xs:element name="return" type="xs:string" minOccurs="0" />
</xs:sequence>
</xs:complexType>
</xs:schema>
</wsdl:types>
- <wsdl:message name="sayHelloIn">
<wsdl:part name="parameters" element="tns:sayHello" />
</wsdl:message>
- <wsdl:message name="sayHelloOut">
<wsdl:part name="sayHelloResponse" element="tns:sayHelloResponse" />
</wsdl:message>
- <wsdl:message name="getReturnIn">
<wsdl:part name="parameters" element="tns:getReturn" />
</wsdl:message>
- <wsdl:message name="getReturnOut">
<wsdl:part name="getReturnResponse" element="tns:getReturnResponse" />
</wsdl:message>
- <wsdl:portType name="HelloWorldEARBean">
- <wsdl:operation name="sayHello" parameterOrder="parameters">
<wsdl:input message="tns:sayHelloIn" />
<wsdl:output message="tns:sayHelloOut" />
</wsdl:operation>
- <wsdl:operation name="getReturn" parameterOrder="parameters">
<wsdl:input message="tns:getReturnIn" />
<wsdl:output message="tns:getReturnOut" />
</wsdl:operation>
</wsdl:portType>
- <wsdl:binding name="HelloWorldEARBeanBinding" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" type="tns:HelloWorldEARBean">
<soap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http" />
- <wsdl:operation name="sayHello">
<soap:operation soapAction="" />
- <wsdl:input>
<soap:body parts="parameters" use="literal" />
</wsdl:input>
- <wsdl:output>
<soap:body use="literal" />
</wsdl:output>
</wsdl:operation>
- <wsdl:operation name="getReturn">
<soap:operation soapAction="" />
- <wsdl:input>
<soap:body parts="parameters" use="literal" />
</wsdl:input>
- <wsdl:output>
<soap:body use="literal" />
</wsdl:output>
</wsdl:operation>
</wsdl:binding>
- <wsdl:service name="HelloWorldEARBeanService">
- <wsdl:port name="HelloWorldEARBeanPort" binding="tns:HelloWorldEARBeanBinding">
<soap:address xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" location="http://localhost:50000/HelloWorldEARBeanService/HelloWorldEARBean" />
</wsdl:port>
</wsdl:service>
</wsdl:definitions>
[/code]
By the following output it's obvious that the AS or the EJB (webservice) doesn't receive the parameter send by the PHP script. Look at the output:
return value:
the return value is null
[code]
Request:
POST /HelloWorldEARBeanService/HelloWorldEARBean HTTP/1.0
User-Agent: PEAR-SOAP 0.8.0RC4-devel
Host: localhost
Content-Type: text/xml; charset=UTF-8
Content-Length: 438
SOAPAction: ""
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/"
>
<SOAP-ENV:Body>
<getReturn xmlns="http://beans/">
<item>parameters</item>
<item>Bob</item></getReturn>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>
Response:
HTTP/1.1 200 OK
server: SAP NetWeaver Application Server 7.10 / AS Java 7.10
content-type: text/xml; charset=utf-8
date: Wed, 14 Feb 2007 15:51:53 GMT
connection: close
<?xml version="1.0" encoding="utf-8"?>
<SOAP-ENV:Envelope xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<SOAP-ENV:Header><wsse:Security xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd">
<wsu:Timestamp xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd">
<wsu:Created>2007-02-14T15:51:53Z</wsu:Created>
<wsu:Expires>2007-02-14T15:52:23Z</wsu:Expires></wsu:Timestamp></wsse:Security></SOAP-ENV:Header>
<SOAP-ENV:Body><ns2:getReturnResponse xmlns:ns2='http://beans/'>
<return>the return value is null</return></ns2:getReturnResponse></SOAP-ENV:Body></SOAP-ENV:Envelope>
[/code]
I used different soap interfaces for PHP like nusoap and the integrated soap interface of PHP 5.
Further I experimented with different parameters inside the function call
that results in small differencies at the xml-request.
Thanks.

Hi
I've solved the problem now. I just have to add
@SOAPBinding(style=SOAPBinding.Style.RPC)
in the EJB, that's all.
Here is the complete code, ... maybe some other guys have this problem too, so I will post the working code:
At first the EJB:
package beans;
import javax.ejb.Stateless;
import javax.jws.WebParam;
import javax.jws.WebService;
import javax.jws.WebMethod;
import javax.jws.soap.SOAPBinding;
import beans.HelloWorldEARBean;
@WebService(name="HelloWorldEARBean",serviceName="HelloWorldEARBeanService",targetNamespace="http://beans/",portName="HelloWorldEARBeanPort")
@SOAPBinding(style=SOAPBinding.Style.RPC)
@Stateless public class HelloWorldEARBean {
     @WebMethod public String sayHello(@WebParam(name="testStr") String testStr){
            return "Hello Mr. "+testStr;
2. the local XML:
<wsdl:definitions xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" targetNamespace="http://beans/" xmlns:tns="http://beans/">
<wsdl:types>
    <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" version="1.0" targetNamespace="http://beans/">
      <xs:element name="sayHello" type="tns:sayHello"/>
      <xs:element name="sayHelloResponse" type="tns:sayHelloResponse"/>
      <xs:complexType name="sayHello">
          <xs:element name="testStr" type="xs:string" minOccurs="0"/>
      </xs:complexType>
      <xs:complexType name="sayHelloResponse">
          <xs:element name="return" type="xs:string" minOccurs="0"/>
      </xs:complexType>
    </xs:schema>
</wsdl:types>
<wsdl:message name="sayHelloIn">
    <wsdl:part name="parameters" element="tns:sayHello"/>
</wsdl:message>
<wsdl:message name="sayHelloOut">
    <wsdl:part name="sayHelloResponse" element="tns:sayHelloResponse"/>
</wsdl:message>
<wsdl:portType name="HelloWorldEARBean">
    <wsdl:operation name="sayHello" parameterOrder="parameters">
      <wsdl:input message="tns:sayHelloIn"/>
      <wsdl:output message="tns:sayHelloOut"/>
    </wsdl:operation>
</wsdl:portType>
<wsdl:binding name="HelloWorldEARBeanBinding" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" type="tns:HelloWorldEARBean">
    <soap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http"/>
    <wsdl:operation name="sayHello">
      <soap:operation soapAction=""/>
      <wsdl:input>
        <soap:body parts="parameters" use="literal"/>
      </wsdl:input>
      <wsdl:output>
        <soap:body use="literal"/>
      </wsdl:output>
    </wsdl:operation>
</wsdl:binding>
<wsdl:service name="HelloWorldEARBeanService">
    <wsdl:port name="HelloWorldEARBeanPort" binding="tns:HelloWorldEARBeanBinding">
      <soap:address xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" location="http://localhost:50000/HelloWorldEARBeanService/HelloWorldEARBean"/>
    </wsdl:port>
</wsdl:service>
</wsdl:definitions>
3. the PHP script:
see next post
Thank you very much for your help.

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========================================
env.put(Context.INITIAL_CONTEXT_FACTORY,
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========================================
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========================================
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========================================
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There is no way to keep the acroread process running in background and convert pdfs as and when they are available.
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USE OF FINALIZE IN EJB'S

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