org.springframework.remoting.jaxrpc
Class JaxRpcPortClientInterceptor

java.lang.Object
  org.springframework.remoting.jaxrpc.LocalJaxRpcServiceFactory
      org.springframework.remoting.jaxrpc.JaxRpcPortClientInterceptor

All Implemented Interfaces:

Advice, Interceptor, MethodInterceptor, InitializingBean

Direct Known Subclasses:

JaxRpcPortProxyFactoryBean

public class JaxRpcPortClientInterceptor
extends LocalJaxRpcServiceFactory
implements MethodInterceptor, InitializingBean

MethodInterceptor for accessing a specific port of a JAX-RPC service. Uses either LocalJaxRpcServiceFactory's facilities underneath or takes an explicit reference to an existing JAX-RPC Service instance (e.g. obtained via a JndiObjectFactoryBean).

Allows to set JAX-RPC's standard stub properties directly, via the "username", "password", "endpointAddress" and "maintainSession" properties. For typical usage, it is not necessary to specify those.

In standard JAX-RPC style, this invoker is used with an RMI service interface. Alternatively, this invoker can also proxy a JAX-RPC service with a matching non-RMI business interface, that is, an interface that declares the service methods without RemoteExceptions. In the latter case, RemoteExceptions thrown by JAX-RPC will automatically get converted to Spring's unchecked RemoteAccessException.

Setting "serviceInterface" is usually sufficient: The invoker will automatically use JAX-RPC "dynamic invocations" via the Call API in this case, no matter whether the specified interface is an RMI or non-RMI interface. Alternatively, a corresponding JAX-RPC port interface can be specified as "portInterface", which will turn this invoker into "static invocation" mode (operating on a standard JAX-RPC port stub).

Since:

15.12.2003

Author:

Juergen Hoeller

See Also:

setPortName(java.lang.String), setServiceInterface(java.lang.Class), setPortInterface(java.lang.Class), Service.createCall(javax.xml.namespace.QName), Service.getPort(javax.xml.namespace.QName, java.lang.Class), RemoteAccessException, JndiObjectFactoryBean

Field Summary

Fields inherited from class org.springframework.remoting.jaxrpc.LocalJaxRpcServiceFactory

logger

Constructor Summary

JaxRpcPortClientInterceptor()

Method Summary

void	addCustomProperty(String name, Object value) Add a custom property to this JAX-RPC Stub/Call.
void	afterPropertiesSet() Prepares the JAX-RPC service and port if the "lookupServiceOnStartup" is turned on (which it is by default).
protected boolean	alwaysUseJaxRpcCall() Return whether to always use JAX-RPC dynamic calls.
protected Object	doInvoke(MethodInvocation invocation) Perform a JAX-RPC service invocation based on the given method invocation.
protected Object	doInvoke(MethodInvocation invocation, Remote portStub) Perform a JAX-RPC service invocation on the given port stub.
Map	getCustomPropertyMap() Allow Map access to the custom properties to be set on the stub or call, with the option to add or override specific entries.
String	getEndpointAddress() Return the endpoint address to specify on the stub or call.
Service	getJaxRpcService() Return a reference to an existing JAX-RPC Service instance, if any.
String	getPassword() Return the password to specify on the stub or call.
Class	getPortInterface() Return the JAX-RPC port interface to use.
String	getPortName() Return the name of the port.
protected QName	getPortQName() Return the prepared QName for the port.
protected Remote	getPortStub() Return the underlying JAX-RPC port stub that this interceptor delegates to for each method invocation on the proxy.
Class	getServiceInterface() Return the interface of the service that this factory should create a proxy for.
String	getUsername() Return the username to specify on the stub or call.
protected Throwable	handleRemoteException(Method method, RemoteException ex) Handle the given RemoteException that was thrown from a JAX-RPC port stub or JAX-RPC call invocation.
Object	invoke(MethodInvocation invocation) Translates the method invocation into a JAX-RPC service invocation.
protected boolean	isConnectFailure(RemoteException ex) Determine whether the given RMI exception indicates a connect failure.
boolean	isMaintainSession() Return the maintain session flag to specify on the stub or call.
protected boolean	isPrepared() Return whether this client interceptor has already been prepared, i.e. has already looked up the JAX-RPC service and port.
protected Object	performJaxRpcCall(MethodInvocation invocation, Service service) Perform a JAX-RPC dynamic call for the given AOP method invocation.
protected void	postProcessJaxRpcCall(Call call, MethodInvocation invocation) Post-process the given JAX-RPC call.
protected void	postProcessPortStub(Stub stub) Post-process the given JAX-RPC port stub.
void	prepare() Create and initialize the JAX-RPC service for the specified port.
protected void	prepareJaxRpcCall(Call call) Prepare the given JAX-RPC call, applying properties to it.
protected void	preparePortStub(Stub stub) Prepare the given JAX-RPC port stub, applying properties to it.
protected void	reset() Reset the prepared service of this interceptor, allowing for reinitialization on next access.
void	setCustomProperties(Properties customProperties) Set custom properties to be set on the stub or call.
void	setCustomPropertyMap(Map customProperties) Set custom properties to be set on the stub or call.
void	setEndpointAddress(String endpointAddress) Set the endpoint address to specify on the stub or call.
void	setJaxRpcService(Service jaxRpcService) Set a reference to an existing JAX-RPC Service instance, for example obtained via JndiObjectFactoryBean.
void	setLookupServiceOnStartup(boolean lookupServiceOnStartup) Set whether to look up the JAX-RPC service on startup.
void	setMaintainSession(boolean maintainSession) Set the maintain session flag to specify on the stub or call.
void	setPassword(String password) Set the password to specify on the stub or call.
void	setPortInterface(Class portInterface) Set the JAX-RPC port interface to use.
void	setPortName(String portName) Set the name of the port.
void	setRefreshServiceAfterConnectFailure(boolean refreshServiceAfterConnectFailure) Set whether to refresh the JAX-RPC service on connect failure, that is, whenever a JAX-RPC invocation throws a RemoteException.
void	setServiceInterface(Class serviceInterface) Set the interface of the service that this factory should create a proxy for.
void	setUsername(String username) Set the username to specify on the stub or call.

Methods inherited from class org.springframework.remoting.jaxrpc.LocalJaxRpcServiceFactory

createJaxRpcService, createService, createServiceFactory, getJaxRpcServiceInterface, getJaxRpcServiceProperties, getNamespaceUri, getQName, getServiceFactory, getServiceFactoryClass, getServiceName, getServicePostProcessors, getWsdlDocumentUrl, postProcessJaxRpcService, setJaxRpcServiceInterface, setJaxRpcServiceProperties, setNamespaceUri, setServiceFactory, setServiceFactoryClass, setServiceName, setServicePostProcessors, setWsdlDocumentUrl

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

JaxRpcPortClientInterceptor

public JaxRpcPortClientInterceptor()

Method Detail

setJaxRpcService

public void setJaxRpcService(Service jaxRpcService)

Set a reference to an existing JAX-RPC Service instance, for example obtained via JndiObjectFactoryBean. If not set, LocalJaxRpcServiceFactory's properties have to be specified.

See Also:

LocalJaxRpcServiceFactory.setServiceFactoryClass(java.lang.Class), LocalJaxRpcServiceFactory.setWsdlDocumentUrl(java.net.URL), LocalJaxRpcServiceFactory.setNamespaceUri(java.lang.String), LocalJaxRpcServiceFactory.setServiceName(java.lang.String), JndiObjectFactoryBean

getJaxRpcService

public Service getJaxRpcService()

Return a reference to an existing JAX-RPC Service instance, if any.

setPortName

public void setPortName(String portName)

Set the name of the port. Corresponds to the "wsdl:port" name.

getPortName

public String getPortName()

Return the name of the port.

setUsername

public void setUsername(String username)

Set the username to specify on the stub or call.

See Also:

Stub.USERNAME_PROPERTY, Call.USERNAME_PROPERTY

getUsername

public String getUsername()

Return the username to specify on the stub or call.

setPassword

public void setPassword(String password)

Set the password to specify on the stub or call.

See Also:

Stub.PASSWORD_PROPERTY, Call.PASSWORD_PROPERTY

getPassword

public String getPassword()

Return the password to specify on the stub or call.

setEndpointAddress

public void setEndpointAddress(String endpointAddress)

Set the endpoint address to specify on the stub or call.

See Also:

Stub.ENDPOINT_ADDRESS_PROPERTY, Call.setTargetEndpointAddress(java.lang.String)

getEndpointAddress

public String getEndpointAddress()

Return the endpoint address to specify on the stub or call.

setMaintainSession

public void setMaintainSession(boolean maintainSession)

Set the maintain session flag to specify on the stub or call.

See Also:

Stub.SESSION_MAINTAIN_PROPERTY, Call.SESSION_MAINTAIN_PROPERTY

isMaintainSession

public boolean isMaintainSession()

Return the maintain session flag to specify on the stub or call.

setCustomProperties

public void setCustomProperties(Properties customProperties)

Set custom properties to be set on the stub or call.

Can be populated with a String "value" (parsed via PropertiesEditor) or a "props" element in XML bean definitions.

See Also:

Stub._setProperty(java.lang.String, java.lang.Object), Call.setProperty(java.lang.String, java.lang.Object)

setCustomPropertyMap

public void setCustomPropertyMap(Map customProperties)

Set custom properties to be set on the stub or call.

Can be populated with a "map" or "props" element in XML bean definitions.

See Also:

Stub._setProperty(java.lang.String, java.lang.Object), Call.setProperty(java.lang.String, java.lang.Object)

getCustomPropertyMap

public Map getCustomPropertyMap()

Allow Map access to the custom properties to be set on the stub or call, with the option to add or override specific entries.

Useful for specifying entries directly, for example via "customPropertyMap[myKey]". This is particularly useful for adding or overriding entries in child bean definitions.

addCustomProperty

public void addCustomProperty(String name,
                              Object value)

Add a custom property to this JAX-RPC Stub/Call.

Parameters:

name - the name of the attribute to expose

value - the attribute value to expose

See Also:

Stub._setProperty(java.lang.String, java.lang.Object), Call.setProperty(java.lang.String, java.lang.Object)

setServiceInterface

public void setServiceInterface(Class serviceInterface)

Set the interface of the service that this factory should create a proxy for. This will typically be a non-RMI business interface, although you can also use an RMI port interface as recommended by JAX-RPC here.

Calls on the specified service interface will either be translated to the underlying RMI port interface (in case of a "portInterface" being specified) or to dynamic calls (using the JAX-RPC Dynamic Invocation Interface).

The dynamic call mechanism has the advantage that you don't need to maintain an RMI port interface in addition to an existing non-RMI business interface. In terms of configuration, specifying the business interface as "serviceInterface" will be enough; this interceptor will automatically use dynamic calls in such a scenario.

See Also:

Service.createCall(javax.xml.namespace.QName), setPortInterface(java.lang.Class)

getServiceInterface

public Class getServiceInterface()

Return the interface of the service that this factory should create a proxy for.

setPortInterface

public void setPortInterface(Class portInterface)

Set the JAX-RPC port interface to use. Only needs to be set if a JAX-RPC port stub should be used instead of the dynamic call mechanism. See the javadoc of the "serviceInterface" property for more details.

The interface must be suitable for a JAX-RPC port, that is, it must be an RMI service interface (that extends java.rmi.Remote).

NOTE: Check whether your JAX-RPC provider returns thread-safe port stubs. If not, use the dynamic call mechanism instead, which will always be thread-safe. In particular, do not use JAX-RPC port stubs with Apache Axis, whose port stubs are known to be non-thread-safe.

See Also:

Service.getPort(javax.xml.namespace.QName, java.lang.Class), Remote, setServiceInterface(java.lang.Class)

getPortInterface

public Class getPortInterface()

Return the JAX-RPC port interface to use.

setLookupServiceOnStartup

public void setLookupServiceOnStartup(boolean lookupServiceOnStartup)

Set whether to look up the JAX-RPC service on startup.

Default is "true". Turn this flag off to allow for late start of the target server. In this case, the JAX-RPC service will be lazily fetched on first access.

setRefreshServiceAfterConnectFailure

public void setRefreshServiceAfterConnectFailure(boolean refreshServiceAfterConnectFailure)

Set whether to refresh the JAX-RPC service on connect failure, that is, whenever a JAX-RPC invocation throws a RemoteException.

Default is "false", keeping a reference to the JAX-RPC service in any case, retrying the next invocation on the same service even in case of failure. Turn this flag on to reinitialize the entire service in case of connect failures.

afterPropertiesSet

public void afterPropertiesSet()

Prepares the JAX-RPC service and port if the "lookupServiceOnStartup" is turned on (which it is by default).

Specified by:

afterPropertiesSet in interface InitializingBean

prepare

public void prepare()
             throws RemoteLookupFailureException

Create and initialize the JAX-RPC service for the specified port.

Prepares a JAX-RPC stub if possible (if an RMI interface is available); falls back to JAX-RPC dynamic calls else. Using dynamic calls can be enforced through overriding alwaysUseJaxRpcCall() to return true.

LocalJaxRpcServiceFactory.postProcessJaxRpcService(javax.xml.rpc.Service) and postProcessPortStub(javax.xml.rpc.Stub) hooks are available for customization in subclasses. When using dynamic calls, each can be post-processed via postProcessJaxRpcCall(javax.xml.rpc.Call, org.aopalliance.intercept.MethodInvocation).

Throws:

RemoteLookupFailureException - if service initialization or port stub creation failed

alwaysUseJaxRpcCall

protected boolean alwaysUseJaxRpcCall()

Return whether to always use JAX-RPC dynamic calls. Called by afterPropertiesSet.

Default is "false"; if an RMI interface is specified as "portInterface" or "serviceInterface", it will be used to create a JAX-RPC port stub.

Can be overridden to enforce the use of the JAX-RPC Call API, for example if there is a need to customize at the Call level. This just necessary if you you want to use an RMI interface as "serviceInterface", though; in case of only a non-RMI interface being available, this interceptor will fall back to the Call API anyway.

See Also:

postProcessJaxRpcCall(javax.xml.rpc.Call, org.aopalliance.intercept.MethodInvocation)

reset

protected void reset()

Reset the prepared service of this interceptor, allowing for reinitialization on next access.

isPrepared

protected boolean isPrepared()

Return whether this client interceptor has already been prepared, i.e. has already looked up the JAX-RPC service and port.

getPortQName

protected final QName getPortQName()

Return the prepared QName for the port.

See Also:

setPortName(java.lang.String), LocalJaxRpcServiceFactory.getQName(java.lang.String)

preparePortStub

protected void preparePortStub(Stub stub)

Prepare the given JAX-RPC port stub, applying properties to it. Called by prepare().

Just applied when actually creating a JAX-RPC port stub, in case of a compliant port interface. Else, JAX-RPC dynamic calls will be used.

Parameters:

stub - the current JAX-RPC port stub

See Also:

setUsername(java.lang.String), setPassword(java.lang.String), setEndpointAddress(java.lang.String), setMaintainSession(boolean), setCustomProperties(java.util.Properties), setPortInterface(java.lang.Class), prepareJaxRpcCall(javax.xml.rpc.Call)

postProcessPortStub

protected void postProcessPortStub(Stub stub)

Post-process the given JAX-RPC port stub. Called by prepare().

The default implementation is empty.

Just applied when actually creating a JAX-RPC port stub, in case of a compliant port interface. Else, JAX-RPC dynamic calls will be used.

Parameters:

stub - the current JAX-RPC port stub (can be cast to an implementation-specific class if necessary)

See Also:

setPortInterface(java.lang.Class), postProcessJaxRpcCall(javax.xml.rpc.Call, org.aopalliance.intercept.MethodInvocation)

getPortStub

protected Remote getPortStub()

Return the underlying JAX-RPC port stub that this interceptor delegates to for each method invocation on the proxy.

invoke

public Object invoke(MethodInvocation invocation)
              throws Throwable

Translates the method invocation into a JAX-RPC service invocation.

Prepares the service on the fly, if necessary, in case of lazy lookup or a connect failure having happened.

Specified by:

invoke in interface MethodInterceptor

Throws:

Throwable

See Also:

prepare(), doInvoke(org.aopalliance.intercept.MethodInvocation)

doInvoke

protected Object doInvoke(MethodInvocation invocation)
                   throws Throwable

Perform a JAX-RPC service invocation based on the given method invocation.

Uses traditional RMI stub invocation if a JAX-RPC port stub is available; falls back to JAX-RPC dynamic calls else.

Parameters:

invocation - the AOP method invocation

Returns:

the invocation result, if any

Throws:

Throwable - in case of invocation failure

See Also:

getPortStub(), doInvoke(org.aopalliance.intercept.MethodInvocation, java.rmi.Remote), performJaxRpcCall(org.aopalliance.intercept.MethodInvocation, javax.xml.rpc.Service)

doInvoke

protected Object doInvoke(MethodInvocation invocation,
                          Remote portStub)
                   throws Throwable

Perform a JAX-RPC service invocation on the given port stub.

Parameters:

invocation - the AOP method invocation

portStub - the RMI port stub to invoke

Returns:

the invocation result, if any

Throws:

Throwable - in case of invocation failure

See Also:

getPortStub(), doInvoke(org.aopalliance.intercept.MethodInvocation, java.rmi.Remote), performJaxRpcCall(org.aopalliance.intercept.MethodInvocation, javax.xml.rpc.Service)

performJaxRpcCall

protected Object performJaxRpcCall(MethodInvocation invocation,
                                   Service service)
                            throws Throwable

Perform a JAX-RPC dynamic call for the given AOP method invocation. Delegates to prepareJaxRpcCall(javax.xml.rpc.Call) and postProcessJaxRpcCall(javax.xml.rpc.Call, org.aopalliance.intercept.MethodInvocation) for setting up the call object.

The default implementation uses method name as JAX-RPC operation name and method arguments as arguments for the JAX-RPC call. Can be overridden in subclasses for custom operation names and/or arguments.

Parameters:

invocation - the current AOP MethodInvocation that should be converted to a JAX-RPC call

service - the JAX-RPC Service to use for the call

Returns:

the return value of the invocation, if any

Throws:

Throwable - the exception thrown by the invocation, if any

See Also:

prepareJaxRpcCall(javax.xml.rpc.Call), postProcessJaxRpcCall(javax.xml.rpc.Call, org.aopalliance.intercept.MethodInvocation)

prepareJaxRpcCall

protected void prepareJaxRpcCall(Call call)

Prepare the given JAX-RPC call, applying properties to it. Called by invoke(org.aopalliance.intercept.MethodInvocation).

Just applied when actually using JAX-RPC dynamic calls, i.e. if no compliant port interface was specified. Else, a JAX-RPC port stub will be used.

Parameters:

call - the current JAX-RPC call object

See Also:

setUsername(java.lang.String), setPassword(java.lang.String), setEndpointAddress(java.lang.String), setMaintainSession(boolean), setCustomProperties(java.util.Properties), setPortInterface(java.lang.Class), preparePortStub(javax.xml.rpc.Stub)

postProcessJaxRpcCall

protected void postProcessJaxRpcCall(Call call,
                                     MethodInvocation invocation)

Post-process the given JAX-RPC call. Called by invoke(org.aopalliance.intercept.MethodInvocation).

The default implementation is empty.

Just applied when actually using JAX-RPC dynamic calls, i.e. if no compliant port interface was specified. Else, a JAX-RPC port stub will be used.

Parameters:

call - the current JAX-RPC call object (can be cast to an implementation-specific class if necessary)

invocation - the current AOP MethodInvocation that the call was created for (can be used to check method name, method parameters and/or passed-in arguments)

See Also:

setPortInterface(java.lang.Class), postProcessPortStub(javax.xml.rpc.Stub)

handleRemoteException

protected Throwable handleRemoteException(Method method,
                                          RemoteException ex)

Handle the given RemoteException that was thrown from a JAX-RPC port stub or JAX-RPC call invocation.

Parameters:

method - the service interface method that we invoked

ex - the original RemoteException

Returns:

the exception to rethrow (may be the original RemoteException or an extracted/wrapped exception, but never null)

isConnectFailure

protected boolean isConnectFailure(RemoteException ex)

Determine whether the given RMI exception indicates a connect failure.

The default implementation returns true unless the exception class name (or exception superclass name) contains the term "Fault" (e.g. "AxisFault"), assuming that the JAX-RPC provider only throws RemoteException in case of WSDL faults and connect failures.

Parameters:

ex - the RMI exception to check

Returns:

whether the exception should be treated as connect failure

See Also:

RmiClientInterceptorUtils.isConnectFailure(java.rmi.RemoteException)