ADF backing Bean中常用的代码

// 刷新iterator

bindings.refreshControl();

iterBind.executeQuery();

iterBind.refresh(DCIteratorBinding.RANGESIZE_UNLIMITED);

　　

Bean中常用方法：

//获取binding容器

BindingContainer bindings

       =  BindingContext.getCurrent().getCurrentBindingsEntry();

　　

//获取Page definitions的 attribute的值

AttributeBinding attr = (AttributeBinding)bindings.getControlBinding("test");

attr.setInputValue(”test”);

　　

// 获取action或者方法

OperationBinding method = bindings.getOperationBinding("methodAction");

method.execute();

List errors = method.getErrors();

method = bindings.getOperationBinding(”methodAction”);

Map paramsMap = method.getParamsMap();

paramsMap.put(”param”,”value”)  ;

method.execute();

　　

// 从ADF Tree 或者 Table中获取数据

DCBindingContainer dcBindings = (DCBindingContainer)BindingContext.getCurrent().getCurrentBindingsEntry();

FacesCtrlHierBinding treeData = (FacesCtrlHierBinding)bc.getControlBinding(”tree”);

Row[] rows = treeData.getAllRowsInRange();

　　

// 从iterator 的当前行获取一个 attribute的值

DCIteratorBinding iterBind= (DCIteratorBinding)dcBindings.get(”testIterator”);

String attribute = (String)iterBind.getCurrentRow().getAttribute(”field1″);

<code>

<code lang="java">

// 获取错误

String error = iterBind.getError().getMessage();

　　

// 获取 iterator的所有行

Row[] rows = iterBind.getAllRowsInRange();

TestData dataRow = null;

for (Row row : rows) {

dataRow = (TestData)((DCDataRow)row).getDataProvider();

}

　　

//获取iterator当前行的另一种方法

FacesContext ctx = FacesContext.getCurrentInstance();

ExpressionFactory ef = ctx.getApplication().getExpressionFactory();

ValueExpression ve = ef.createValueExpression(ctx.getELContext(), “#{bindings.testIter.currentRow.dataProvider}”, TestHead.class);

TestHead test = (TestHead)ve.getValue(ctx.getELContext());

　　

// 获得一个on bean

FacesContext ctx = FacesContext.getCurrentInstance();

ExpressionFactory ef = ctx.getApplication().getExpressionFactory();

ValueExpression ve = ef.createValueExpression(ctx.getELContext(), “#{testSessionBean}”, TestSession.class);

TestSession test = (TestSession)ve.getValue(ctx.getELContext());

　　

//获取askflow的Binding

DCTaskFlowBinding tf = (DCTaskFlowBinding)dc.findExecutableBinding(”dynamicRegion1″);

<code>

<code lang="java">

//获取异常并显示到页面

catch(Exception e) {

FacesMessage msg = new FacesMessage(FacesMessage.SEVERITY_ERROR, e.getMessage(), “”);

FacesContext.getCurrentInstance().addMessage(null, msg);

}

　　

// 重置控件的所有子控件

private void resetValueInputItems(AdfFacesContext adfFacesContext,

UIComponent component){

List items = component.getChildren();

for ( UIComponent item : items ) {

resetValueInputItems(adfFacesContext,item);

if ( item instanceof RichInputText  ) {

RichInputText input = (RichInputText)item;

if ( !input.isDisabled() ) {

input.resetValue() ;

adfFacesContext.addPartialTarget(input);

};

} else if ( item instanceof RichInputDate ) {

RichInputDate input = (RichInputDate)item;

if ( !input.isDisabled() ) {

input.resetValue() ;

adfFacesContext.addPartialTarget(input);

};

}

}

}

　　

// 重定向到另一个URL

ExternalContext ectx = FacesContext.getCurrentInstance().getExternalContext();

HttpServletResponse response = (HttpServletResponse)ectx.getResponse();

String url = ectx.getRequestContextPath()+”/adfAuthentication?logout=true&end_url=/faces/start.jspx”;

try {

response.sendRedirect(url);

} catch (Exception ex) {

ex.printStackTrace();

}

<code lang="java">

// 刷新控件（PPR）

AdfFacesContext.getCurrentInstance().addPartialTarget(UIComponent);

// 查找控件

private UIComponent getUIComponent(String name) {

FacesContext facesCtx = FacesContext.getCurrentInstance();

return facesCtx.getViewRoot().findComponent(name) ;

}

　　

//获取 bc application module

private OEServiceImpl getAm(){

FacesContext fc = FacesContext.getCurrentInstance();

Application app = fc.getApplication();

ExpressionFactory elFactory = app.getExpressionFactory();

ELContext elContext = fc.getELContext();

ValueExpression valueExp =

elFactory.createValueExpression(elContext, “#{data.OEServiceDataControl.dataProvider}”,

Object.class);

return   (OEServiceImpl)valueExp.getValue(elContext);

}

　　

//获取table选中的行

RowKeySet selection = resultTable.getSelectedRowKeys();

Object[] keys = selection.toArray();

List receivers = new ArrayList(keys.length);

for ( Object key : keys ) {

User user = modelFriends.get((Integer)key);

}

　　

// 获取table选中的行的另一种

for (Object facesRowKey : table.getSelectedRowKeys()) {

table.setRowKey(facesRowKey);

Object o = table.getRowData();

JUCtrlHierNodeBinding rowData = (JUCtrlHierNodeBinding)o;

Row row = rowData.getRow();

Test testRow = (Test)((DCDataRow)row).getDataProvider() ;

}

　　转载自：http://www.fmw007.com/archives/82

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