Some handy codes for backing bean for my record. I am following biemond's blogs for this -
http://biemond.blogspot.com/2009/03/some-handy-code-for-backing-beans-adf.html
http://biemond.blogspot.com/2011/01/some-handy-code-for-your-managed-beans.html
Part 1 of 2009 starts here -
The 2nd Part of 2011 follows from here - Starting with FacesContext class, with this class you can use to find a JSF Component, change the Locale, get the ELContext, Add a message to your view and get the ExternalContext.
The ExternalContext class, with this you can retrieve all the java init & context (web.xml) parameters, the Request & Session parameters and your web application url.
AdfFacesContext class, you can use this class for Partial Page Rendering ( PPR), get the PageFlowScope and ViewScope variables
ADFContext class, with this you can get all the memory scopes variables even the application scope variables, ELContext and the SecurityContext.
SecurityContext class, retrieve the current user and its roles.
BindingContext, BindingContainer and DCBindingContainer class. These classes are well known when you want to retrieve the ADF pagedef objects.
The last class is ControllerContext, which you can use to retrieve the exceptions
http://biemond.blogspot.com/2009/03/some-handy-code-for-backing-beans-adf.html
http://biemond.blogspot.com/2011/01/some-handy-code-for-your-managed-beans.html
Part 1 of 2009 starts here -
1: // print the roles of the current user
2: for ( String role : ADFContext.getCurrent().getSecurityContext().getUserRoles() ) {
3: System.out.println("role "+role);
4: }
5:
6:
7: // get the ADF security context and test if the user has the role users
8: SecurityContext sec = ADFContext.getCurrent().getSecurityContext();
9: if ( sec.isUserInRole("users") ) {
10: }
11: // is the user valid
12: public boolean isAuthenticated() {
13: return ADFContext.getCurrent().getSecurityContext().isAuthenticated();
14: }
15: // return the user
16: public String getCurrentUser() {
17: return ADFContext.getCurrent().getSecurityContext().getUserName();
18: }
19:
20:
21: // get the binding container
22: BindingContainer bindings = BindingContext.getCurrent().getCurrentBindingsEntry();
23:
24: // get an ADF attributevalue from AttributeBinding in ADF page definitions
25: AttributeBinding attr = (AttributeBinding)bindings.getControlBinding("test");
26: attr.setInputValue("test");
27:
28: // get an Action or MethodAction by OperationBinding in PageDef
29: OperationBinding method = bindings.getOperationBinding("methodAction");
30: method.execute();
31: List errors = method.getErrors();
32:
33: method = bindings.getOperationBinding("methodAction");
34: Map paramsMap = method.getParamsMap();
35: paramsMap.put("param","value") ; //putting method param value & executing
36: method.execute();
37:
38:
39: // Get the data from an ADF tree binding for AF:Table or AF:Tree
40: DCBindingContainer dcBindings = (DCBindingContainer)BindingContext.getCurrent().getCurrentBindingsEntry();
41:
42: FacesCtrlHierBinding treeData = (FacesCtrlHierBinding)dcBindings.getControlBinding("tree");
43: Row[] rows = treeData.getAllRowsInRange();
44:
45: // Get a attribute value of the current row of iterator
46: DCIteratorBinding iterBind= (DCIteratorBinding)dcBindings.get("testIterator");
47: String attribute = (String)iterBind.getCurrentRow().getAttribute("field1");
48:
49: // Get the error
50: String error = iterBind.getError().getMessage();
51:
52:
53: // refresh the iterator
54: dcBindings.refreshControl();
55: iterBind.executeQuery();
56: iterBind.refresh(DCIteratorBinding.RANGESIZE_UNLIMITED);
57:
58: // Get all the rows of a iterator
59: Row[] rows = iterBind.getAllRowsInRange();
60: TestData dataRow = null;
61: for (Row row : rows) {
62: dataRow = (TestData)((DCDataRow)row).getDataProvider();
63: }
64:
65: // Get the current row of a iterator , a different way
66: FacesContext ctx = FacesContext.getCurrentInstance();
67: ExpressionFactory ef = ctx.getApplication().getExpressionFactory();
68: ValueExpression ve = ef.createValueExpression(ctx.getELContext(), "#{bindings.testIter.currentRow.dataProvider}", TestHead.class);
69: TestHead test = (TestHead)ve.getValue(ctx.getELContext());
70:
71: // Get a session bean
72: FacesContext ctx = FacesContext.getCurrentInstance();
73: ExpressionFactory ef = ctx.getApplication().getExpressionFactory();
74: ValueExpression ve = ef.createValueExpression(ctx.getELContext(), "#{testSessionBean}", TestSession.class);
75: TestSession test = (TestSession)ve.getValue(ctx.getELContext());
76:
77: // main jsf page
78: DCBindingContainer dc = (DCBindingContainer)BindingContext.getCurrent().getCurrentBindingsEntry();
79: // taskflow binding
80: DCTaskFlowBinding tf = (DCTaskFlowBinding)dc.findExecutableBinding("dynamicRegion1");
81: // pagedef of a page fragment
82: JUFormBinding form = (JUFormBinding) tf.findExecutableBinding("regions_employee_regionPageDef");
83: // handle to binding container of the region.
84: DCBindingContainer dcRegion = form;
85:
86:
87:
88: // return a methodexpression like a control flow case action or ADF pagedef action
89: private MethodExpression getMethodExpression(String name) {
90: Class [] argtypes = new Class[1];
91: argtypes[0] = ActionEvent.class;
92: FacesContext facesCtx = FacesContext.getCurrentInstance();
93: Application app = facesCtx.getApplication();
94: ExpressionFactory elFactory = app.getExpressionFactory();
95: ELContext elContext = facesCtx.getELContext();
96: return elFactory.createMethodExpression(elContext,name,null,argtypes);
97: }
98:
99: //
100: RichCommandMenuItem menuPage1 = new RichCommandMenuItem();
101: menuPage1.setId("page1");
102: menuPage1.setText("Page 1");
103: menuPage1.setActionExpression(getMethodExpression("page1"));
104:
105: RichCommandButton button = new RichCommandButton();
106: button.setValueExpression("disabled",getValueExpression("#{!bindings."+item+".enabled}"));
107: button.setId(item);
108: button.setText(item);
109: MethodExpression me = getMethodExpression("#{bindings."+item+".execute}");
110: button.addActionListener(new MethodExpressionActionListener(me));
111: footer.getChildren().add(button);
112:
113:
114: // get a value
115: private ValueExpression getValueExpression(String name) {
116: FacesContext facesCtx = FacesContext.getCurrentInstance();
117: Application app = facesCtx.getApplication();
118: ExpressionFactory elFactory = app.getExpressionFactory();
119: ELContext elContext = facesCtx.getELContext();
120: return elFactory.createValueExpression(elContext, name, Object.class);
121: }
122: // an example how to use this
123: RichInputText input = new RichInputText();
124: input.setValueExpression("value",getValueExpression("#{bindings."+item+".inputValue}"));
125: input.setValueExpression("label",getValueExpression("#{bindings."+item+".hints.label}"));
126: input.setId(item);
127: panelForm.getChildren().add(input);
128:
129:
130:
131: // catch an exception and show it in the jsf page
132: catch(Exception e) {
133: FacesMessage msg = new FacesMessage(FacesMessage.SEVERITY_ERROR, e.getMessage(), "");
134: FacesContext.getCurrentInstance().addMessage(null, msg);
135: }
136:
137:
138: FacesMessage msg = new FacesMessage(FacesMessage.SEVERITY_WARN, msgHead , msgDetail);
139: facesContext.addMessage(uiComponent.getClientId(facesContext), msg);
140:
141:
142: // reset all the child uicomponents
143: private void resetValueInputItems(AdfFacesContext adfFacesContext,
144: UIComponent component){
145: List<UIComponent> items = component.getChildren();
146: for ( UIComponent item : items ) {
147:
148: resetValueInputItems(adfFacesContext,item);
149:
150: if ( item instanceof RichInputText ) {
151: RichInputText input = (RichInputText)item;
152: if ( !input.isDisabled() ) {
153: input.resetValue() ;
154: adfFacesContext.addPartialTarget(input);
155: };
156: } else if ( item instanceof RichInputDate ) {
157: RichInputDate input = (RichInputDate)item;
158: if ( !input.isDisabled() ) {
159: input.resetValue() ;
160: adfFacesContext.addPartialTarget(input);
161: };
162: }
163: }
164: }
165:
166: // redirect to a other url
167: ExternalContext ectx = FacesContext.getCurrentInstance().getExternalContext();
168: HttpServletResponse response = (HttpServletResponse)ectx.getResponse();
169: String url = ectx.getRequestContextPath()+"/adfAuthentication?logout=true&end_url=/faces/start.jspx";
170:
171: try {
172: response.sendRedirect(url);
173: } catch (Exception ex) {
174: ex.printStackTrace();
175: }
176:
177: // PPR refresh a jsf component
178: AdfFacesContext.getCurrentInstance().addPartialTarget(UIComponent);
179:
180:
181: // find a jsf component
182: private UIComponent getUIComponent(String name) {
183: FacesContext facesCtx = FacesContext.getCurrentInstance();
184: return facesCtx.getViewRoot().findComponent(name) ;
185: }
186:
187:
188: // get the adf bc application module
189: private OEServiceImpl getAm(){
190: FacesContext fc = FacesContext.getCurrentInstance();
191: Application app = fc.getApplication();
192: ExpressionFactory elFactory = app.getExpressionFactory();
193: ELContext elContext = fc.getELContext();
194: ValueExpression valueExp =
195: elFactory.createValueExpression(elContext, "#{data.OEServiceDataControl.dataProvider}",
196: Object.class);
197: return (OEServiceImpl)valueExp.getValue(elContext);
198: }
199:
200:
201: // change the locale
202: Locale newLocale = new Locale(this.language);
203: FacesContext context = FacesContext.getCurrentInstance();
204: context.getViewRoot().setLocale(newLocale);
205:
206:
207: // get the stacktrace of a not handled exception
208: private ControllerContext cc = ControllerContext.getInstance();
209:
210: public String getStacktrace() {
211: if ( cc.getCurrentViewPort().getExceptionData()!=null ) {
212: StringWriter sw = new StringWriter();
213: PrintWriter pw = new PrintWriter(sw);
214: cc.getCurrentViewPort().getExceptionData().printStackTrace(pw);
215: return sw.toString();
216: }
217: return null;
218: }
219:
220:
221: // get the selected rows from a table component
222: RowKeySet selection = resultTable.getSelectedRowKeys();
223: Object[] keys = selection.toArray();
224: List<Long> receivers = new ArrayList<Long>(keys.length);
225: for ( Object key : keys ) {
226: User user = modelFriends.get((Integer)key);
227: }
228:
229: // get selected Rows of a table 2
230: for (Object facesRowKey : table.getSelectedRowKeys()) {
231: table.setRowKey(facesRowKey);
232: Object o = table.getRowData();
233: JUCtrlHierNodeBinding rowData = (JUCtrlHierNodeBinding)o;
234: Row row = rowData.getRow();
235: Test testRow = (Test)((DCDataRow)row).getDataProvider() ;
236: }
1: // FacesContext
2: FacesContext facesCtx = FacesContext.getCurrentInstance();
3:
4: // find UIComponent
5: UIComponent input = facesCtx.getViewRoot().findComponent("f1");
6:
7: // change the locale
8: facesCtx.getViewRoot().setLocale( Locale.ENGLISH);
9:
10: // el expression
11: Application app = facesCtx.getApplication();
12: ExpressionFactory elFactory = app.getExpressionFactory();
13: ELContext elContext = facesCtx.getELContext();
14: ValueExpression valueExp = elFactory.createValueExpression(elContext,"{xxxx}", Object.class);
15: Object result = valueExp.getValue(elContext);
16:
17: // add a message
18: FacesMessage msg = new FacesMessage(FacesMessage.SEVERITY_WARN,"header","detail");
19: facesCtx.addMessage(input.getClientId(facesCtx), msg);
20:
21: // ExternalContext
22: ExternalContext ectx = facesCtx.getExternalContext();
The ExternalContext class, with this you can retrieve all the java init & context (web.xml) parameters, the Request & Session parameters and your web application url.
1: // ExternalContext
2: ExternalContext ectx = facesCtx.getExternalContext();
3:
4: // all the java init parameters
5: Map<String, Object> initParamsVar = ectx.getInitParameterMap();
6:
7: Map<String, String> requestParamsVar = ectx.getRequestParameterMap();
8: Map<String, Object> sessionParamsVar = ectx.getSessionMap();
9:
10: // web application context root
11: String contextPath = ectx.getRequestContextPat();
AdfFacesContext class, you can use this class for Partial Page Rendering ( PPR), get the PageFlowScope and ViewScope variables
1: // AdfFacesContext
2: AdfFacesContext adfFacesCtx = AdfFacesContext.getCurrentInstance();
3:
4: // PPR
5: adfFacesCtx.addPartialTarget(input);
6:
7: // get the PageFlowScope Params
8: Map<String, Object> scopePageFlowScopeVar= adfFacesCtx.getPageFlowScope();
9:
10: // get the viewScope Params
11: Map<String, Object> scopeViewScopeVar= adfFacesCtx.getViewScope();
ADFContext class, with this you can get all the memory scopes variables even the application scope variables, ELContext and the SecurityContext.
1: // ADFContext
2: ADFContext adfCtx = ADFContext.getCurrent();
3:
4: // Get the scope variables
5: Map<String, Object> applicationVar2 = adfCtx.getApplicationScope();
6: Map<String, Object> pageParamsVar2 = adfCtx.getPageFlowScope();
7: Map<String, String> requestParamsVar2 = adfCtx.getRequestScope();
8: Map<String, Object> sessionParamsVar2 = adfCtx.getSessionScope();
9:
10: // el expression
11: ELContext elContext2 = adfCtx.getELContext();
12: ExpressionFactory elFactory2 = adfCtx.getExpressionFactory();
13: ValueExpression valueExp2 = elFactory2.createValueExpression(elContext2,"#{xxxx}", Object.class);
14: Object result2 = valueExp2.getValue(elContext2);
15:
16: // Security
17: SecurityContext secCntx = adfCtx.getSecurityContext();
SecurityContext class, retrieve the current user and its roles.
1: // Security
2: SecurityContext secCntx = adfCtx.getSecurityContext();
3: String user = secCntx.getUserName();
4: String[] roles = secCntx.getUserRoles();
BindingContext, BindingContainer and DCBindingContainer class. These classes are well known when you want to retrieve the ADF pagedef objects.
1: BindingContext bc = BindingContext.getCurrent();
2: BindingContainer bcon = bc.getCurrentBindingsEntry();
3:
4: List<AttributeBinding> attr = bcon.getAttributeBindings();
5: List<OperationBinding> oper = bcon.getOperationBindings();
6: List<ControlBinding> ctrl = bcon.getControlBindings();
7:
8: DCBindingContainer dcbcon = (DCBindingContainer) bc.getCurrentBindingsEntry();
9:
10: List<AttributeBinding> attr2 = dcbcon.getAttributeBindings();
11: List<OperationBinding> oper2 = dcbcon.getOperationBindings();
12: List<ControlBinding> ctrl2 = dcbcon.getControlBindings();
13: List iters = dcbcon.getIterBindingList();
14: List exec = dcbcon.getExecutableBindings();
The last class is ControllerContext, which you can use to retrieve the exceptions
1: ControllerContext cc = ControllerContext.getInstance();
2:
3: // get the exception
4: Exception exp = cc.getCurrentViewPort().getExceptionData();
