1. 定義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，這裡的參數對象類型是ADE中的PagePhaseEvent，而不是JSF中的PhaseEvent。
在實驗中，我發現，JSF的生命周期的各個階段的Id值分别對應到9至14，與PhaseId中的各個階段常量值不比對。
我感覺是一個設計上的缺陷，如果ADF能夠在Lifecycle類中重新定義ADF的生命周期的各個階段就好了。
2. 配置adf-settings.xml
（1）在ViewController項目下建立目錄META-INF，實際上就是在ViewController目錄下的src目錄下建立META-INF目錄。
（2）在META-INF目錄下建立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. 開發一個基于ADF-BC的頁面
4. 運作頁面
在Server日志中，輸出如下結果：
###### Processing new Request!
before - jsfRestoreView 9
<_checkTimestamp> Apache Trinidad 正在啟用了時間戳檢查的情況下運作。這不應當在正式版環境中使用。請檢視 WEB-INF/web.xml 中的 org.apache.myfaces.trinidad.CHECK_FILE_MODIFICATION 屬性
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，頁面第一次Load時，隻經曆了兩個大的階段：Restore_View和Render_Response。
點選Submit按鈕送出後，經曆了全部的階段。
另外，還注意到，在Render_Response階段，不是像我們想象的那樣先執行jsfRenderResponse，結束後再執行prepareRender。
而是prepareRender階段“嵌”在jsfRenderResponse中執行。
為了更好的觀察，ADF在各個階段都做了些什麼，修改ViewController項目的Debug參數，重新運作頁面。
這一次我們可以看出，在不同的階段ADF執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!
參考文獻：
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類。
3. 《Fusion Developer's Guide for Oracle Application Development
Framework》之How to Set Release Level in an ADF PagePhaseListener