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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