I am in process of implementing a REST API server using Apache CXF JAX-RS v(2.30). I am using spring as container. I am thinking of making use of org.apache.cxf.jaxrs.ext.RequestHandler to implement few features like license check, authentication, authorization (All of which has custom code). My idea is to segregate this code in individual implementation classes (implementing RequestHandler) and configure it for a base REST url something like /rest/*. Being new to Apache CXF and JAX-RS, I want to understand following things.
Is this approach the right way to implement the features I want to?
If yes, then is the order in which the RequestHandlers are declared is the order of their invocation?
For example if in my definition I declare:
<beans>
<jaxrs:server id="abcRestService" address="/rest">
<jaxrs:serviceBeans>
<bean class="com.abc.api.rest.service.FooService" />
</jaxrs:serviceBeans>
<jaxrs:providers>
<ref bean="licenseFilter" />
<ref bean="authorizationFilter" />
</jaxrs:providers>
</jaxrs:server>
<bean id="licenseFilter" class="com.abc.api.rest.providers.LicenseValidator">
<!-- License check bean properties -->
</bean>
<bean id="authorizationFilter" class="com.abc.api.rest.providers.AuthorizationFilter">
<!-- authorization bean properties -->
</bean>
</beans>
then will the licenseFilter always get invoked before authorizationFilter?
I did not find a mention of invocation ordering of RequestHandlers as well as ResponseHandlers.
Thanks in advance.
Figured this out.
It gets invoked in the order of declaration of beans in <jaxrs:providers>. Thus in case mentioned in question, licenseFilter will get invoked before authorizationFilter.
Related
I am new to Spring and going to develop a spring MVC Application.What is the best way to write root-context.xml for Bean class properties?
For database Connection I want to use Spring jdbc(JdbcTemplate).Can you please suggest me the best way to do so?
You're going to need to set up a DataSource and then create a JdbcTemplate bean that utilizes it. The Spring JDBC Reference Documentation provides examples and really good explanations on how to accomplish this.
Here's a basic bean definition for a datasource. The properties specified will depend on the database that you are using.
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="${jdbc.driverClassName}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</bean>
Then you can create a jdbcTemplate bean that uses the dataSource or you can instantiate the jdbcTemplate within your code.
The JdbcTemplate API mentions this:
Can be used within a service implementation via direct instantiation with a DataSource reference, or get prepared in an application context and given to services as bean reference. Note: The DataSource should always be configured as a bean in the application context, in the first case given to the service directly, in the second case to the prepared template.
I'd like to access share-config-custom.xml data from a Java bean in the Share webapp.
What is the equivalent to the following javascript syntax (which access the config root object) but in a Java context:
config.scoped['RepositoryLibrary']['root-node']
Is the share-config-custom translated to a bean itself? Or is there an API to read it from Java?
First, there is no "reasonable" way to use this API "looking" at one XML config file. In gen eral, the ConfigService creates a configuration merging from various sources. But looking directly at the XML should not be needed anyways.
That being said, the Javascript object config actually is a org.springframework.extensions.webscripts.ScriptConfigModel.
To get something equivalent in Java get yourself a reference to the ConfigService. To obtain the reference, let spring inject it in your custom bean:
<property name="configService" ref="web.config" />
Calling configService.getGlobalConfig() should get you the equivalent of config.scoped.
I know this is already answered, but Andreas' answer only got me halfway there. The configuration class is actually the XMLConfigService now.
Here's a code snippet that worked with Enterprise 4.1.* Alfresco:
Java class
import org.springframework.extensions.config.xml.XMLConfigService;
public class PDFValidate extends BaseJavaDelegate implements ExecutionListener
{
protected XMLConfigService configService;
public void setConfigService( XMLConfigService scriptConfigModel )
{
this.configService = scriptConfigModel;
}
Bean registration:
<bean id="AbstractWorkflowDelegate" parent="baseJavaDelegate" abstract="true" depends-on="activitiBeanRegistry" />
<bean id="PDFValidate" parent="AbstractWorkflowDelegate" class="com.epnet.alfresco.metadata.listener.PDFValidate">
<property name="repository" ref="repositoryHelper" />
<property name="configService" ref="web.config" />
</bean>
And from there, you can use the configService in your java code to get the config values.
The XMLConfigService is located in the spring-surf-core-configservice-1.2.0-SNAPSHOT.jar for my version of Alfresco.
I have a problem. The apache camel documentation states that for the camel-restlet component (starting from 2.10 version) is possible to define the max number of threads that will service requests (http://camel.apache.org/restlet.html).
How can i specify this parameter?
This is the route that I made
from(
"restlet:http://localhost:" + config.getEmergencyRESTPort()
+ "?restletMethods=post,get&restletUriPatterns=#emergencyUriTemplates&maxThreads=64").process(
new EmergencyServerProcessor(config, emergencyService));
I used the maxThreads parameter in the url but it doesn't work.
What is the error?
maxThreads is not a URI option but rather it is a component option.
You can configure your restlet component by creating a bean like this:
<bean id="restlet" class="org.apache.camel.component.restlet.RestletComponent">
<property name="maxThreads" value="50"/>
</bean>
I am using Jasperserver 4.5.0 Pro. I have developed a custom data-source for some additional feature. All reports that use this custom DS get executed properly and show the correct output when executed manually. But when the same reports are scheduled using Jasper's report job scheduler, there is some problem with session initiation, and hence the reports do not get executed.
Let me explain this a bit.
For manual execution of reports -
As part of custom DS, I had to update the following 2 xmls -
viewReportFlow.xml :
I updated the action state 'runReport' to use our custom DS executer action bean method 'xmlHttpDsExecuterAction.setUpSession' to start session. Please see the below tag of runReport -
<action-state id="runReport" xmlns:b="http://www.springframework.org/schema/webflow" xmlns:xi="http://www.w3.org/2001/XInclude">
<on-entry>
<evaluate expression="xmlHttpDsExecuterAction.setUpSession"/>
</on-entry>
<evaluate expression="viewReportActionBean"/>
<transition on="success" to="reportOutput"/>
<on-exit>
<evaluate expression="xmlHttpDsExecuterPageAction.setIndex"/>
</on-exit>
viewReportBeans.xml :
I defined the executer action beans used in above flow xml here -
<bean id="xmlHttpDsExecuterAction" class="com.sigma.reporting.xmlhttpds.XmlHttpDsExecuterAction" xmlns:xsi="http://www.w 3.org/2001/XMLSchema-instance"/> <bean id="xmlHttpDsExecuterPageAction" class="com.sigma.reporting.xmlhttpds.XmlHttpDsExecuterPageAction" xmlns:xsi="http://www.w 3.org/2001/XMLSchema-instance">
<property name="requestParameterPageIndex" value="pageIndex"/>
<property name="flowAttributePageIndex" value="pageIndex"/>
<property name="xmlHttpDataSourceName" value="com.sigma.reporting.xmlhttpds.XmlHttpDsExecuterDataSourceService"/>
<property name="repository">
<ref bean="repositoryService"/>
</property>
<property name="jasperPrintName" value="jasperPrintName"/>
<property name="reportUnitObject" value="reportUnitObject"/> </bean>
For job scheduling of reports :
I want to implement similarly as above using scheduler. During my investigations, I have tried to analyze the scheduler flow, and tried to put our changes, but no luck so far. Can any one please let me know what flows are used for running reports via scheduler and also please recommend the places to configure custom DS as above?
Finally after understanding the flow of japser server scheduler i have got the solution for this.
For setting your custom data source beans and calling the function,we need to specify the bean destination in $JASPER_HOME/apache-tomcat/weaaps/jasperserver-pro/WEBINF/flows/reportJobBeans.xml and we can use this bean in reportJobFlow.xml in jobOutput tag lik this
<view-state id="jobOutput" view="modules/reportScheduling/jobOutput">
<on-entry>
<set name="flowScope.prevForm" value="'jobOutput'"/>
<evaluate expression="reportOptionsJobEditAction.setOutputReferenceData"/>
<evaluate expression="xmlHttpDsExecuterAction.setUpSession"/>
</on-entry>
</view-state>
I have the following situation:
I set the beans (in applicationContext.xml) as follows:
...
<bean id="bDaoImpl" class="BDaoImpl"></bean>
<bean id="injBInA" class="ADaoImpl">
<property name="b" ref="bDaoImpl"/>
</bean>
...
Why when I use "b" in the value of the Object class ADaoImpl is null?
I have the solution. Sorry. Basically when I load the bean from application context (ApplicationContext.getBean) does not load the bean with id = "injBInA" therefore right was never carried out the injection