1. 定义PagePhaseListener
import javax.faces.event.PhaseId;
import oracle.adf.controller.v2.lifecycle.Lifecycle;
import oracle.adf.controller.v2.lifecycle.PagePhaseEvent;
import oracle.adf.controller.v2.lifecycle.PagePhaseListener;
public class MyPagePhaseListener implements PagePhaseListener {
public MyPagePhaseListener() {
super();
}
public void beforePhase(PagePhaseEvent pe) {
if (pe.getPhaseId() == 9)
System.out.println("###### Processing new Request!");
System.out.println("before - " + pe.getDebugValue() + " " + pe.getPhaseId());
}
public void afterPhase(PagePhaseEvent pe) {
System.out.println("after - " + pe.getDebugValue() + " " + pe.getPhaseId());
//if (pe.getPhaseId() == Lifecycle.PREPARE_RENDER_ID)
if (pe.getPhaseId() == 14)
System.out.println("###### Done with Request!\n");
}
}
注意，这里的参数对象类型是ADE中的PagePhaseEvent，而不是JSF中的PhaseEvent。
在实验中，我发现，JSF的生命周期的各个阶段的Id值分别对应到9至14，与PhaseId中的各个阶段常量值不匹配。
我感觉是一个设计上的缺陷，如果ADF能够在Lifecycle类中重新定义ADF的生命周期的各个阶段就好了。
2. 配置adf-settings.xml
（1）在ViewController项目下建立目录META-INF，实际上就是在ViewController目录下的src目录下建立META-INF目录。
（2）在META-INF目录下创建adf-settings.xml，内容如下：
<?xml version="1.0" encoding="UTF-8" ?>
<adf-settings xmlns="http://xmlns.oracle.com/adf/settings">
<adf-controller-config xmlns="http://xmlns.oracle.com/adf/controller/config">
<lifecycle>
<phase-listener>
<listener-id>myPagePhaseListener</listener-id>
<class>view.pagephaselistener.MyPagePhaseListener</class>
</phase-listener>
</lifecycle>
</adf-controller-config>
</adf-settings>
3. 开发一个基于ADF-BC的页面
4. 运行页面
在Server日志中，输出如下结果：
###### Processing new Request!
before - jsfRestoreView 9
<_checkTimestamp> Apache Trinidad 正在启用了时间戳检查的情况下运行。这不应当在正式版环境中使用。请查看 WEB-INF/web.xml 中的 org.apache.myfaces.trinidad.CHECK_FILE_MODIFICATION 属性
after - jsfRestoreView 9
###### Processing new Request!
before - jsfRestoreView 9
after - jsfRestoreView 9
before - initContext 0
after - initContext 0
before - prepareModel 1
after - prepareModel 1
before - jsfRenderResponse 14
before - prepareRender 8
after - prepareRender 8
<_isBeanValidationAvailable> A Bean Validation provider is not present, therefore bean validation is disabled
after - jsfRenderResponse 14
###### Done with Request!
###### Processing new Request!
before - jsfRestoreView 9
after - jsfRestoreView 9
before - initContext 0
after - initContext 0
before - prepareModel 1
after - prepareModel 1
before - jsfApplyRequestValues 10
after - jsfApplyRequestValues 10
before - jsfProcessValidations 11
after - jsfProcessValidations 11
before - jsfUpdateModelValues 12
after - jsfUpdateModelValues 12
before - validateModelUpdates 5
after - validateModelUpdates 5
before - jsfInvokeApplication 13
after - jsfInvokeApplication 13
before - metadataCommit 7
after - metadataCommit 7
before - jsfRenderResponse 14
before - prepareRender 8
after - prepareRender 8
after - jsfRenderResponse 14
###### Done with Request!
可以看出，页面第一次Load时，只经历了两个大的阶段：Restore_View和Render_Response。
点击Submit按钮提交后，经历了全部的阶段。
另外，还注意到，在Render_Response阶段，不是像我们想象的那样先执行jsfRenderResponse，结束后再执行prepareRender。
而是prepareRender阶段“嵌”在jsfRenderResponse中执行。
为了更好的观察，ADF在各个阶段都做了些什么，修改ViewController项目的Debug参数，重新运行页面。
这一次我们可以看出，在不同的阶段ADF执行了很多不同的操作。
###### Processing new Request!
before - jsfRestoreView 9
after - jsfRestoreView 9
before - initContext 0
after - initContext 0
before - prepareModel 1
[392] Process BindingContainer state token(decompressed state):BCST:=0%V%=NEmployeesView1Iterator=-D-,
Refreshing binding container
[393] **** refreshControl() for BindingContainer :view_employeePageDef
[394] DCUtil, returning:oracle.jbo.uicli.binding.JUApplication, for AppModuleDataControl
[395] (oracle.adf.model.bc4j.DataControlFactoryImpl.SyncMode = Immediate
[396] Reusing a cached session application module instance
[397] Invoke refresh for :EmployeesView1Iterator
[398] Executing and syncing on IteratorBinding.refresh from :EmployeesView1Iterator
Attaching an iterator binding to a datasource
[399] Resolving VO:EmployeesView1 for iterator binding:EmployeesView1Iterator
Attaching an iterator binding to a datasource
Attaching an iterator binding to a datasource
Executing iterator binding
Executing iterator binding
Refreshing binding container
[400] Process BindingContainer state token(decompressed state):BCST:=0%V%=NEmployeesView1Iterator=-D-,
after - prepareModel 1
before - jsfApplyRequestValues 10
[401] view_employeePageDef: stop DC events
[402] stopEvents on DataControl:AppModuleDataControl of frame:av4001e0l_1
[403] view_employeePageDef: stop DC events
[404] stopEvents on DataControl:AppModuleDataControl of frame:av4001e0l_1
[405] view_employeePageDef: stop DC events
[406] stopEvents on DataControl:AppModuleDataControl of frame:av4001e0l_1
[407] view_employeePageDef: stop DC events
[408] stopEvents on DataControl:AppModuleDataControl of frame:av4001e0l_1
[409] view_employeePageDef: stop DC events
[410] stopEvents on DataControl:AppModuleDataControl of frame:av4001e0l_1
[411] view_employeePageDef: stop DC events
[412] stopEvents on DataControl:AppModuleDataControl of frame:av4001e0l_1
[413] view_employeePageDef: stop DC events
[414] stopEvents on DataControl:AppModuleDataControl of frame:av4001e0l_1
[415] view_employeePageDef: stop DC events
[416] stopEvents on DataControl:AppModuleDataControl of frame:av4001e0l_1
[417] view_employeePageDef: stop DC events
[418] stopEvents on DataControl:AppModuleDataControl of frame:av4001e0l_1
[419] view_employeePageDef: stop DC events
[420] stopEvents on DataControl:AppModuleDataControl of frame:av4001e0l_1
[421] view_employeePageDef: stop DC events
[422] stopEvents on DataControl:AppModuleDataControl of frame:av4001e0l_1
after - jsfApplyRequestValues 10
before - jsfProcessValidations 11
after - jsfProcessValidations 11
before - jsfUpdateModelValues 12
Evaluate Expression
Evaluate Expression
after - jsfUpdateModelValues 12
before - validateModelUpdates 5
[423] DCBindingContainer:view_employeePageDef validating at level:all
Validate transaction
Validate Entity
Validate Entity
Validate Entity
Validate transaction
Validate transaction
after - validateModelUpdates 5
before - jsfInvokeApplication 13
after - jsfInvokeApplication 13
before - metadataCommit 7
after - metadataCommit 7
before - jsfRenderResponse 14
before - prepareRender 8
Refreshing binding container
[424] **** refreshControl() for BindingContainer :view_employeePageDef
Refreshing binding container
after - prepareRender 8
[425] EmployeeId: IGNORING Start events as it is not in active/push mode
[426] FirstName: IGNORING Start events as it is not in active/push mode
[427] LastName: IGNORING Start events as it is not in active/push mode
[428] Email: IGNORING Start events as it is not in active/push mode
[429] PhoneNumber: IGNORING Start events as it is not in active/push mode
[430] HireDate: IGNORING Start events as it is not in active/push mode
[431] JobId: IGNORING Start events as it is not in active/push mode
[432] Salary: IGNORING Start events as it is not in active/push mode
[433] CommissionPct: IGNORING Start events as it is not in active/push mode
[434] ManagerId: IGNORING Start events as it is not in active/push mode
[435] DepartmentId: IGNORING Start events as it is not in active/push mode
after - jsfRenderResponse 14
###### Done with Request!
参考文献：
1. https://blogs.oracle.com/jdevotnharvest/entry/how_to_configure_an_adf_phase_listener_and_where_to_put_the_file
2. FOD Demo中的FODPhaseListener类。
3. 《Fusion Developer's Guide for Oracle Application Development
Framework》之How to Set Release Level in an ADF PagePhaseListener