How to Bring Common UI Patterns to ADF

ADF
How to Bring Common UI Patterns to ADF

Luc Bors, AMIS, The Netherlands
Wednesday, June 27, 2012
ODTUG KScope 12
San Antonio, Texas, USA

CLOSE ALL / CLOSE OTHERS

• e

CREATE THE CONTEXT MENU

<af:popup id="contextMenu" contentDelivery="lazyUncached"
eventContext="launcher" launcherVar="source">
<af:menu id="men1" text="#{source.attributes.menuInvokedOnTab}">
<af:commandMenuItem id="cmi1" text="close“
actionListener="#{viewScope.jhsDynTabContext.closeThis}">
<af:setPropertyListener
from="#{source.attributes.menuInvokedOnTab}"
to="#{viewScope.jhsDynTabContext.menuInvokedOnTab}"
type="action"/>
</af:commandMenuItem>
<af:commandMenuItem id="cmi2" text="close others“
actionListener="#{viewScope.jhsDynTabContext.closeOthers}">
…….
<af:commandMenuItem id="cmi3" text="close all“
actionListener="#{viewScope.jhsDynTabContext.closeAll}">
……………..
</af:menu>
</af:popup>

INVOKING THE CONTEXT MENU

<af:navigationPane ...........>
<af:commandNavigationItem ...............>
<f:attribute name="tabId" value="#{tab.id}"/>
<af:clientListener method="showMenu" type="contextMenu"/>
<af:clientAttribute name="menuInvokedOnTab" value="#{tab.id}"/>
</af:commandNavigationItem>
</af:navigationPane >

function showMenu(evt) {
var popup = AdfPage.PAGE.findComponent("pt:contextMenu");
……………..
popup.show(hints);
evt.cancel();
}

CLOSE THIS TAB

public void closeThis(ActionEvent action) {

String id = getMenuInvokedOnTab();
List<String> tabsToRemove = new ArrayList();

for (DynTab t : getActiveTabList()) {
String x = t.getId();
if (id == x) {
tabsToRemove.add(x);
}
}
for (String t : tabsToRemove) {
removeTab(t);
}
}

CLOSE OTHER TABS

public void closeOthers(ActionEvent action) {

String id = getMenuInvokedOnTab();

String x = t.getId();
if (id != x) {
tabsToRemove.add(x);
}
}
removeTab(t);
}
}

CLOSE ALL

public void closeAll(ActionEvent action) {


tabsToRemove.add(t.getId());
}
removeTab(t);
}
}

MOST RECENTLY USED (..HISTORY)

IMPLEMENTATION

• Record activities
– Use setPropertyListeners

• Historybean (session scope) that manages the collection of
navigation events
– Display Label, Entity Type and Primary Key
– bean calls …

• BusinessService to record event in database for this user
– (Optional) Also remove events for deleted records!

CREATE THE BEAN

• Create History bean

<managed-bean id=“1">
<managed-bean-name id=“2">
recentHistoryBean</managed-bean-name>
<managed-bean-class id=“3">
nl.amis.jsf.history.beans.RecentHistoryBean
</managed-bean-class>
<managed-bean-scope id=“3">session</managed-bean-scope>
</managed-bean>

INTERCEPT ACTIVITY
<af:commandLink id="ot3" text="#{row.LastName}" action="edit"
actionListener="#{recentHistoryBean.add}">

<af:setPropertyListener from="#{row.EmployeeId}“
to="#{recentHistoryBean.entityInstanceIdentifier}"
type="action"/>
<af:setPropertyListener from="#{row.LastName}“
to="#{recentHistoryBean.entityInstanceDisplayLabel}"
type="action"/>
<af:setPropertyListener from="#{'EMP'}"
to="#{recentHistoryBean.entityType}"
type="action"/>
</af:commandLink>

RECORD ACTIVITY
public void add(ActionEvent actionEvent) {
// Add event code here...

recentHistory.add(new HistoryEvent(new oracle.jbo.domain.Date(
, entityType
, entityInstanceIdentifier
, entityInstanceDisplayLabel));

HRServiceImpl hrAppMod = (HRServiceImpl)
pageTemplateBc.getDataControl().getApplicationModule();
hrAppMod.recordAndPersistHistoryEntry(recentHistory.get(0));

PERSIST ACTIVITY
public void recordAndPersistHistoryEntry(HistoryEvent event) {
String statement =
"RECENT_HISTORY_MANAGER.RECORD_AND_PERSIST_ENTRY(?,?,?,?)";

callStoredProcedure(statement, new Object[]
{event.getEntityType()
, event.getKey().toString()
, event.getDisplayLabel(), null});
}

PREPARE THE DATABASE

• Make sure that the HR user is allowed to use the
ctxsys.ctx_ddl package

grant EXECUTE on CTXSYS.CTX_DDL to HR

CREATE A SEARCH PACKAGE

function get_emp_search_item ( p_rowid in rowid ) return
varchar2 as
begin
for b in (select e.first_name
, e.last_name
, e.email
, e.phone_number
, j.job_title
from employees e left join jobs j
using (job_id)
where e.rowid = p_rowid)
loop
return b.first_name || ' ' || b.last_name ||
' (' || b.email || ', ' || b.phone_number
|| ', ' || b.job_title || ')';
end loop;
end get_emp_search_item;

CREATE THE ORACLE TEXT INDICES

-- Configure preferences...
ctx_ddl.create_preference('emp_datastore', 'user_datastore');
ctx_ddl.set_attribute('emp_datastore', 'procedure'
, 'ot_search.create_emp_search_item');

-- Create the indices...
execute immediate 'create index emp_search_index on
employees(last_name)
indextype is ctxsys.context
parameters (''datastore emp_datastore wordlist wordlist lexer
lexer stoplist stoplist sync (on commit)'')';

THE BASE CLASSES

• OracleTextSearchSupport:
• Converts the given user input (the search command):
<code>searchValue</code> to an Oracle Text search-string.

• BaseViewObjectImpl
• overrides getCriteriaItemClause(ViewCriteriaItem vci)

• BaseViewDefImpl
• implementation to provide the following custom properties on ViewObjects:
• ORACLE_TEXT_SEARCH_ATTRIBUTE: To mark the column in which the seach info
is queried
• ORACLE_TEXT_INDEX_ATTRIBUTE: To mark the database column on which the
index was defined in the database.

VIEWCONTROLLER : A BEAN
<managed-bean-name id="1">departmentsQuickSearch</managed-bean-name>
<managed-bean-class id="4">
adfplus.quicksearch.controller.bean.QuickSearchBean
</managed-bean-class>
<managed-bean-scope id="2">pageFlow</managed-bean-scope>
<managed-property id=“8">
<property-name id=“10">iteratorBindingName</property-name>
<property-class>java.lang.String</property-class>
<value id="9">DepartmentsVO1Iterator</value>
</managed-property>
<managed-property id="11">
<property-name id="13">searchAttribute</property-name>
<value id="12">DepartmentSearchString</value>
</managed-property>
<managed-property id="14">
<property-name id="15">searchIteratorBindingName</property-name>
<value id="16">DepartmentsVO1IteratorQuickSearch</value>
</managed-property>

VIEWCONTROLLER : A SUBFORM

<af:subform id="s1" defaultCommand="cb7">
<af:panelGroupLayout id="pgl4" layout="horizontal"
inlineStyle="margin:10px;">
<af:inputText label="Search" id="it2“
value="#{pageFlowScope.departmentsQuickSearch.searchValue}">
<af:autoSuggestBehavior
suggestItems=
"#{pageFlowScope.departmentsQuickSearch.suggestItems}"
maxSuggestedItems="10"/>
</af:inputText>

<af:commandButton text="Search" id="cb7"
action="#{pageFlowScope.departmentsQuickSearch.go}"
partialSubmit="true"/>
</af:panelGroupLayout>
</af:subform>

VIEWCONTROLLER : SEARCH METHOD

private synchronized List<SelectItem> search(String searchValue) {

DCIteratorBinding iter = getSearchIteratorBinding();
applySearchCriteria(iter, searchAttribute, searchValue);

translations.clear();
lastSuggestList = new ArrayList<SelectItem>();
lastSearchValue = searchValue;

Row[] rows = iter.getAllRowsInRange();
for (Row row : rows) {
String description = (String)row.getAttribute(searchAttribute);
lastSuggestList.add(new SelectItem(description));
translations.put(description, row.getKey());
}
return lastSuggestList;
}

THE IMPLEMENTATION; THE DATABASE

grant change notification to <user>;

REGISTER FOR DBQRCN (STEP 1)

public void startChangeNotification(){
DatabaseChangeRegistration dcr = null;
String query = "SELECT * from DEPARTMENTS";
Properties prop = new Properties();
prop.setProperty(OracleConnection.DCN_NOTIFY_ROWIDS
,"true");
prop.setProperty(OracleConnection.DCN_QUERY_CHANGE_NOTIFICATION
,"true");
try
{
dcr = conn.registerDatabaseChangeNotification(prop);
RdbmsChangeEventListener listener =
new RdbmsChangeEventListener(this);
dcr.addListener(listener);
………..

REGISTER FOR DBQRCN (STEP 2)

// second step: add objects in the registration:
Statement stmt = conn.createStatement();

((OracleStatement)stmt).setDatabaseChangeRegistration(dcr);
ResultSet rs = stmt.executeQuery(query);
while (rs.next()){}
rs.close();
stmt.close();

SETUP ACTIVE DATA COMPONENT
public void setupActiveData() {
ActiveModelContext context =
ActiveModelContext.getActiveModelContext();
Object[] keyPath = new String[0];
context.addActiveModelInfo(
this
, keyPath
, "activemessage");
System.out.println("add active bean as listener");
databaseNotificationProcessor.registerAsListener(this);
}

SETUP THE ACTUAL UPDATE
public void triggerDataUpdate(String message) {
this.message = message;
counter.incrementAndGet();
ActiveDataUpdateEvent event =
ActiveDataEventUtil.buildActiveDataUpdateEvent(
ActiveDataEntry.ChangeType.UPDATE,
counter.get(),
new String[0], null,
new String[] { "activemessage" },
new Object[] { message });
System.out.println("fireActiveDataUpdate");
fireActiveDataUpdate(event);
}

IMPLEMENTATION IN THE PAGE
<af:activeOutputText
value="#{pageFlowScope.trackChangesBean.updates}"
id="aot1"
visible="false">
<af:clientListener method="activeDataCallback"
type="propertyChange"/>
</af:activeOutputText>

<af:resource type="javascript">
activeDataCallback = function (event) {
var button =
AdfPage.PAGE.findComponentByAbsoluteId("pt1:r1:0:cb1");
button.setVisible(true);
}
</af:resource>

PATTERNS UNDER INVESTIGATION

• Grouping Tabs
• Drag and Drop Tabs in UI Shell
– dragSource and dropTarget

• Duplicating Tabs
– Restarting a new instance of a taskflow

PATTERNS UNDER INVESTIGATION

• Adding Sticky Notes
– dragSource and dropTarget
– Contextual events

– Concept : http://technology.amis.nl
• Search for: adf-11g-dragn-drop-and-contextual-events/

ADF
How to Bring Common UI Patterns to ADF

Luc Bors, AMIS, The Netherlands

Luc.Bors@amis.nl
LucBors@gmail.com
Follow me on Twitter : @lucb_

Wednesday, June 27, 2012
ODTUG KScope 12
San Antonio, Texas, USA

How to Bring Common UI Patterns to ADF

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