2013年7月4日星期四
[ADF技术-011] 如何在backingbean中执行javascript
/**
* 通过后台执行前台的JS代码
* @param script
*/
public static void script(String script) {
FacesContext facesContext = FacesContext.getCurrentInstance();
try {
ExtendedRenderKitService service =
Service.getRenderKitService(facesContext, ExtendedRenderKitService.class);
service.addScript(facesContext, script);
} catch (Exception ex) {
ex.printStackTrace();
}
}
以上代码可以在backingbean中执行js
不过一定要注意一点:调用以上方法的按钮一定要设置partialSubmit="true"
2013年5月29日星期三
[Go Lang-006] Go基础-全局变量与局部变量
package main
import (
"fmt"
)
var a="a"
func main() {
fmt.Println("func main",a)
j()
g()
k()
}
func g(){
fmt.Println("func g",a)
}
func j(){
//局部作用域
//a:="j"
//全部作用域
a="j"
fmt.Println("func j",a)
}
func k(){
fmt.Println("func k",a)
}
以上程序有个注意的地方
当func j()中的局部变量的注释打开,a:="j"(红色部分)时
打印
func main a
func j j
func g a
func k a
当func j()中的全部变量的注释打开,a="j"(蓝色部分)时
func main a
func j j
func g j
func k j
就是a="j"和a:="j"的区别,差了一个分号,就差别那么大?看下下面的解释大家就懂了..
其实
a="j"的意思就是把全局变量a重新赋值成"j"
a:="j"的意思就是重新定义一个新的局部变量a并赋值成"j"
[ADF技术-010] VO的ID字段自动获取Sequence
获取Sequence有两种不同的方法
1.Groovy表达式获取
该方法是view的iterator中创建一行的时候就通过groovy表达式获取Seq中的值并赋值到id字段中,该方法有个缺点:如果事务回滚了或者创建的行没保存,就会造成Seq跳值
1.1.选中需要获取Seq的EO中的字段
1.2.Default Value中选择Expression(表达式)
并填入(new oracle.jbo.server.SequenceImpl(SEQ名称,adf.object.getDBTransaction())).getSequenceNumber()
2.提交事务时候之前获取
该方法是通过在提交事务之前手工获取对应的seq值并赋值到id字段中,是第一个方法很好的补充
2.1.生成EO对应的java类,并勾上Data Manipulation Methods
2.2.找到java类中的doDML方法,并重写
代码如下
/**
* Custom DML update/insert/delete logic here.
* @param operation the operation type
* @param e the transaction event
*/
protected void doDML(int operation, TransactionEvent e) {
if (operation == DML_INSERT) {
if(this.getCompanyId()==null){
this.setCompanyId((new oracle.jbo.server.SequenceImpl(SEQ名称, this.getDBTransaction())).getSequenceNumber().intValue());
}
}
super.doDML(operation, e);
}
2013年5月20日星期一
[Go Lang-005] Go基础-Array,Slice,Map
Array
Array(数组)是固定长度,相同类型的集合,因为是固定长度,因此大小不能改变.
参考文献
1.http://www.cnblogs.com/yjf512/archive/2012/06/14/2549929.html
Array(数组)是固定长度,相同类型的集合,因为是固定长度,因此大小不能改变.
1.1.创建Array
有两种初始化方式
1.1.1.固定长度
var a [3]int
1.1.2.自动统计长度
var a [...]int{1,2,3}
中括号用...代替长度值,就会自动元素个数并赋值长度
Slice
Slice(切片)是非固定长度,相同类型的集合,如果有新元素加入,Slice会增加长度,并且Slice总是指向一个底层的Array,是一个指向Array的指针
2.1.创建一个长度为10,空的Slice
slice:=make([]int,10)
2.2.创建一个非空的slice
slice:=[]int{1,2,3}
注意:这里很容易搞错,上面是slice,下面是array
slice:=[...]int{1,2,3}
差别就是在于中括号中的数字,有数字就是array,没有就是slice
2.3.创建一个Array,并且初始化Slice
var a [...]int{1,2,3}
slice:=[1:3]
各种例子
a:=[...]int{1,2,3,4,5}
//从数组a中取出大于2,小于等于4的数字
s1:=a[2:4]
//从数组a中取出大于1,小于等于5的数字
s2:=a[1:5]
//用a中所有元素创建slice,这是a[0:len(a)]的简化写法
s3:=a[:]
//从序号0到3创建,这是a[0:4]简化写法,得到1,2,3,4
s4:=a[:4]
//从s2创建slice,注意s5的指针扔向指向a
s5:=s2[:]
2.4.追加slice元素
s0:=[]int{1,2}
//向s0中追加元素3
s1:=append(s0,3)
//向s0中追加多个元素
s2:=append(s0,3,4,5)
//向S0中追加一个slice
s3:=append(s0,s2...)
2.5.复制slice元素
a:=[...]int{1,2,3,4,5}
var s1=make([]int,6)
//copy(target,src),src:源数组,target目标数组,返回函数是复制了多少个元素
s2:=copy(s1,a[0:])
println("s2",s2);
Map
Map可以理解为是一个有索引的数组,一般定义形式为map[from type(key type)]to type(value type)
monthDays:= map[ string] int {
"Jan" :31,"Feb" :30,"Mar" :31,
"Apr" :30,"May" :30,"Jun" :30,//<<<<<最后这个逗号是必须的!
}
3.1.读取
println( "May:" ,monthDays["May" ]);
3.2.增加元素
monthDays[ "Dec"]=29
3.3.删除元素
delete(monthDays,"May")
3.4.检查元素是否存在
var value int //<<<接收value
var isExist bool//<<<返回true/false标识是否存在
value,isExist =monthDays["Jan"]
另外一种方式
value,isExist:=monthDays["Jan"]
参考文献
1.http://www.cnblogs.com/yjf512/archive/2012/06/14/2549929.html
[Go Lang-004] Go基础-赋值
Go赋值有两种方法
1.先定义类型再赋值
package main
import (
)
func main(){
//定义一个变量a类型为int
var a int
//将变量a赋值为1,如果不初始化默认为0
a=1
//打印变量a
println("a:",a);
}
注意:定义变量的时候切记和java是有区别的哦..亲...
java:int a;
go:var a int
多个变量同时赋值
//初始化,这种方式成为group
var(
a int
b string
)
注意:使用group方式赋值的时候注意
var和括号一定要在同一行
如:
var(
不能写成不在同一行
如:
var
(
会报错
//赋值
a=1
b="2"
2.直接赋值
package main
import (
)
func main(){
//将变量a赋值为1,不需要定义类型,类型由赋值推演出来
a:=1
//打印变量a
println("a:",a);
}
多个变量同时赋值
a,b:=1,2
1.先定义类型再赋值
package main
import (
)
func main(){
//定义一个变量a类型为int
var a int
//将变量a赋值为1,如果不初始化默认为0
a=1
//打印变量a
println("a:",a);
}
注意:定义变量的时候切记和java是有区别的哦..亲...
java:int a;
go:var a int
多个变量同时赋值
//初始化,这种方式成为group
var(
a int
b string
)
注意:使用group方式赋值的时候注意
var和括号一定要在同一行
如:
var(
不能写成不在同一行
如:
var
(
会报错
//赋值
a=1
b="2"
2.直接赋值
package main
import (
)
func main(){
//将变量a赋值为1,不需要定义类型,类型由赋值推演出来
a:=1
//打印变量a
println("a:",a);
}
多个变量同时赋值
a,b:=1,2
2013年5月18日星期六
[Android-001] Android Studio启动不了
算是尝鲜吧...
早上跑完步回来刚好下完...
安装完之后发现打不开..
在网上找了下资料
可以开查看错误信息的
1.先用记事本打开android-studio\bin\studio.bat文件,在72行后加上PAUSE
2.用cmd运行android-studio\bin\studio.bat
发现错误信息是没配置jdk的环境变量
但运行java -version是没问题的- -
3.好吧.只能检查一下环境变量..真没配置....(比较无奈..)
4.配置上之后把studio.bat文件中的pause去掉就可以正常打开Android Studio
注意:
本帖只限于解决我本机的问题.
如果看到错误提示其他信息请到Google查询解决方案.
2013年5月17日星期五
[ADF技术-009] ModelADFUtils.java-ADF工具类
持续更新ing...........
package model;
import Const;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import oracle.adf.share.ADFContext;
import oracle.jbo.Row;
import oracle.jbo.server.AttributeListImpl;
public class ModelADFUtils {
public ADFUtils() {
super();
}
/**
* 获取SessionScope存储的变量值
* @param key
* @return
*/
public static Object getSessionScope(String key) {
return ADFContext.getCurrent().getSessionScope().get(key);
}
/**
* 获取SessionScope存储的变量值
* @param key
* @return
*/
public static Object getPageFlowScope(String key) {
return ADFContext.getCurrent().getPageFlowScope().get(key);
}
/**
* 获取当前的语言
* @return
*/
public static String getLocale(){
Object o = getSessionScope(Const.LOCALE_FLAG);
if (Beans.isNotEmpty(o)) {
String LangVar = EtravelConst.localeMap.get(o.toString());
if (Beans.isNotEmpty(LangVar)) {
return LangVar;
}
}
return Const.LAN_CN;
}
/**
* 复制一个实体的属性到另外一个实体
* @param obj
* @param targetObject
*/
public static void copy(Object obj,Object targetObject){
AttributeListImpl attribute=null;
Row row=null;
if(targetObject instanceof AttributeListImpl){
attribute = (AttributeListImpl)targetObject;
}else if(targetObject instanceof Row){
row = (Row)targetObject;
}else{
return;
}
if (obj!=null) {
BeanMap bm = new BeanMap(obj);
Set<Entry<String, Object>> entrySet = bm.entrySet();
for (Entry<String, Object> entry : entrySet) {
VEntry vEntry = (VEntry)entry;
String key = Beans.firtCharToUpper(vEntry.getKey());
//不拷贝情况-begin
if (Beans.isEmpty(vEntry.getType())) {
continue;
}
if (vEntry.getType().isArray()) { //不拷贝数组
continue;
}
if (Collection.class.isAssignableFrom(vEntry.getType())) { //不拷贝集合
continue;
}
if (Map.class.isAssignableFrom(vEntry.getType())) { //不拷贝映射
continue;
}
if (Beans.isEmpty(key) || Beans.isEmpty(vEntry.getValue())) {
continue;
}
//不拷贝情况-end
if (Beans.isNotEmpty(row)) {
row.setAttribute(key, vEntry.getValue());
} else if (Beans.isNotEmpty(attribute)) {
attribute.setAttribute(key, vEntry.getValue());
}
}
}
}
}
package model;
import Const;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import oracle.adf.share.ADFContext;
import oracle.jbo.Row;
import oracle.jbo.server.AttributeListImpl;
public class ModelADFUtils {
public ADFUtils() {
super();
}
/**
* 获取SessionScope存储的变量值
* @param key
* @return
*/
public static Object getSessionScope(String key) {
return ADFContext.getCurrent().getSessionScope().get(key);
}
/**
* 获取SessionScope存储的变量值
* @param key
* @return
*/
public static Object getPageFlowScope(String key) {
return ADFContext.getCurrent().getPageFlowScope().get(key);
}
/**
* 获取当前的语言
* @return
*/
public static String getLocale(){
Object o = getSessionScope(Const.LOCALE_FLAG);
if (Beans.isNotEmpty(o)) {
String LangVar = EtravelConst.localeMap.get(o.toString());
if (Beans.isNotEmpty(LangVar)) {
return LangVar;
}
}
return Const.LAN_CN;
}
/**
* 复制一个实体的属性到另外一个实体
* @param obj
* @param targetObject
*/
public static void copy(Object obj,Object targetObject){
AttributeListImpl attribute=null;
Row row=null;
if(targetObject instanceof AttributeListImpl){
attribute = (AttributeListImpl)targetObject;
}else if(targetObject instanceof Row){
row = (Row)targetObject;
}else{
return;
}
if (obj!=null) {
BeanMap bm = new BeanMap(obj);
Set<Entry<String, Object>> entrySet = bm.entrySet();
for (Entry<String, Object> entry : entrySet) {
VEntry vEntry = (VEntry)entry;
String key = Beans.firtCharToUpper(vEntry.getKey());
//不拷贝情况-begin
if (Beans.isEmpty(vEntry.getType())) {
continue;
}
if (vEntry.getType().isArray()) { //不拷贝数组
continue;
}
if (Collection.class.isAssignableFrom(vEntry.getType())) { //不拷贝集合
continue;
}
if (Map.class.isAssignableFrom(vEntry.getType())) { //不拷贝映射
continue;
}
if (Beans.isEmpty(key) || Beans.isEmpty(vEntry.getValue())) {
continue;
}
//不拷贝情况-end
if (Beans.isNotEmpty(row)) {
row.setAttribute(key, vEntry.getValue());
} else if (Beans.isNotEmpty(attribute)) {
attribute.setAttribute(key, vEntry.getValue());
}
}
}
}
}
[ADF技术-008] ADFUtils.java-ADF工具类
package view;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import javax.el.ELContext;
import javax.el.ExpressionFactory;
import javax.el.MethodExpression;
import javax.el.ValueExpression;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.model.SelectItem;
import oracle.adf.controller.ControllerContext;
import oracle.adf.controller.TaskFlowId;
import oracle.adf.model.BindingContext;
import oracle.adf.model.binding.DCBindingContainer;
import oracle.adf.model.binding.DCIteratorBinding;
import oracle.adf.model.binding.DCParameter;
import oracle.adf.share.logging.ADFLogger;
import oracle.adf.view.rich.component.rich.data.RichTable;
import oracle.adf.view.rich.component.rich.input.RichInputText;
import oracle.adf.view.rich.component.rich.layout.RichPanelTabbed;
import oracle.adf.view.rich.component.rich.layout.RichShowDetailItem;
import oracle.adf.view.rich.context.AdfFacesContext;
import oracle.binding.AttributeBinding;
import oracle.binding.BindingContainer;
import oracle.binding.ControlBinding;
import oracle.binding.OperationBinding;
import oracle.jbo.ApplicationModule;
import oracle.jbo.Key;
import oracle.jbo.Row;
import oracle.jbo.uicli.binding.JUCtrlValueBinding;
import org.apache.myfaces.trinidad.render.ExtendedRenderKitService;
import org.apache.myfaces.trinidad.util.Service;
/**
* A series of convenience functions for dealing with ADF Bindings.
* Note: Updated for JDeveloper 11
*
* @author Duncan Mills
* @author Steve Muench
* @author Ric Smith
*
* $Id: ADFUtils.java 2513 2007-09-20 20:39:13Z ralsmith $.
*/
public class ADFUtils {
public static final ADFLogger LOGGER =
ADFLogger.createADFLogger(ADFUtils.class);
/**
* Get application module for an application module data control by name.
* @param name application module data control name
* @return ApplicationModule
*/
public static ApplicationModule getApplicationModuleForDataControl(String name) {
return (ApplicationModule)JSFUtils.resolveExpression("#{data." + name +
".dataProvider}");
}
/**
* A convenience method for getting the value of a bound attribute in the
* current page context programatically.
* @param attributeName of the bound value in the pageDef
* @return value of the attribute
*/
public static Object getBoundAttributeValue(String attributeName) {
return findControlBinding(attributeName).getInputValue();
}
/**
* A convenience method for setting the value of a bound attribute in the
* context of the current page.
* @param attributeName of the bound value in the pageDef
* @param value to set
*/
public static void setBoundAttributeValue(String attributeName,
Object value) {
findControlBinding(attributeName).setInputValue(value);
}
/**
* Returns the evaluated value of a pageDef parameter.
* @param pageDefName reference to the page definition file of the page with the parameter
* @param parameterName name of the pagedef parameter
* @return evaluated value of the parameter as a String
*/
public static Object getPageDefParameterValue(String pageDefName,
String parameterName) {
BindingContainer bindings = findBindingContainer(pageDefName);
DCParameter param =
((DCBindingContainer)bindings).findParameter(parameterName);
return param.getValue();
}
/**
* Convenience method to find a DCControlBinding as an AttributeBinding
* to get able to then call getInputValue() or setInputValue() on it.
* @param bindingContainer binding container
* @param attributeName name of the attribute binding.
* @return the control value binding with the name passed in.
*
*/
public static AttributeBinding findControlBinding(BindingContainer bindingContainer,
String attributeName) {
if (attributeName != null) {
if (bindingContainer != null) {
ControlBinding ctrlBinding =
bindingContainer.getControlBinding(attributeName);
if (ctrlBinding instanceof AttributeBinding) {
return (AttributeBinding)ctrlBinding;
}
}
}
return null;
}
/**
* Convenience method to find a DCControlBinding as a JUCtrlValueBinding
* to get able to then call getInputValue() or setInputValue() on it.
* @param attributeName name of the attribute binding.
* @return the control value binding with the name passed in.
*
*/
public static AttributeBinding findControlBinding(String attributeName) {
return findControlBinding(getBindingContainer(), attributeName);
}
/**
* Return the current page's binding container.
* @return the current page's binding container
*/
public static BindingContainer getBindingContainer() {
// return (BindingContainer)JSFUtils.resolveExpression("#{bindings}");
FacesContext fc = FacesContext.getCurrentInstance();
BindingContainer bindings =
(BindingContainer)fc.getApplication().evaluateExpressionGet(fc,
"#{bindings}",
BindingContainer.class);
return bindings;
}
/**
* Return the Binding Container as a DCBindingContainer.
* @return current binding container as a DCBindingContainer
*/
public static DCBindingContainer getDCBindingContainer() {
return (DCBindingContainer)getBindingContainer();
}
/**
* Get List of ADF Faces SelectItem for an iterator binding.
*
* Uses the value of the 'valueAttrName' attribute as the key for
* the SelectItem key.
*
* @param iteratorName ADF iterator binding name
* @param valueAttrName name of the value attribute to use
* @param displayAttrName name of the attribute from iterator rows to display
* @return ADF Faces SelectItem for an iterator binding
*/
public static List<SelectItem> selectItemsForIterator(String iteratorName,
String valueAttrName,
String displayAttrName) {
return selectItemsForIterator(findIterator(iteratorName),
valueAttrName, displayAttrName);
}
/**
* Get List of ADF Faces SelectItem for an iterator binding.
*
* Uses the value of the 'valueAttrName' attribute as the key for
* the SelectItem key.
*
* @param iteratorName ADF iterator binding name
* @param valueAttrName name of the value attribute to use
* @param displayAttrNames array of attribute names from iterator rows to display
* @return ADF Faces SelectItem for an iterator binding
*/
public static List<SelectItem> selectItemsForIterator(String iteratorName,
String valueAttrName,
String[] displayAttrNames) {
return selectItemsForIterator(findIterator(iteratorName),
valueAttrName, displayAttrNames);
}
/**
* Get a List of attributes as a Map (of name, value) for an iterator.
* @param iter iterator binding
* @param attrNames array of attribute names for attributes to be retrieved
* @return List of attribute values
*/
public static List<Map<String, Object>> attributesListForIterator(DCIteratorBinding iter,
String[] attrNames) {
List<Map<String, Object>> attributeList =
new ArrayList<Map<String, Object>>();
for (Row r : iter.getAllRowsInRange()) {
Map<String, Object> alist = new HashMap<String, Object>();
for (String aName : attrNames) {
alist.put(aName, r.getAttribute(aName));
}
attributeList.add(alist);
}
return attributeList;
}
/**
* Get a List of attributes as a Map (of name, value) for an iterator.
* @param iteratorName ADF iterator binding name
* @param attrNames array of attribute names for attributes to be retrieved
* @return List of attribute values for an iterator
*/
public static List<Map<String, Object>> attributeListForIterator(String iteratorName,
String[] attrNames) {
return attributesListForIterator(findIterator(iteratorName),
attrNames);
}
/**
* Get List of ADF Faces SelectItem for an iterator binding with description.
*
* Uses the value of the 'valueAttrName' attribute as the key for
* the SelectItem key.
*
* @param iteratorName ADF iterator binding name
* @param valueAttrName name of the value attribute to use
* @param displayAttrName name of the attribute from iterator rows to display
* @param descriptionAttrName name of the attribute to use for description
* @return ADF Faces SelectItem for an iterator binding with description
*/
public static List<SelectItem> selectItemsForIterator(String iteratorName,
String valueAttrName,
String displayAttrName,
String descriptionAttrName) {
return selectItemsForIterator(findIterator(iteratorName),
valueAttrName, displayAttrName,
descriptionAttrName);
}
/**
* Get List of attribute values for an iterator.
* @param iteratorName ADF iterator binding name
* @param valueAttrName value attribute to use
* @return List of attribute values for an iterator
*/
public static List attributeListForIterator(String iteratorName,
String valueAttrName) {
return attributeListForIterator(findIterator(iteratorName),
valueAttrName);
}
/**
* Get List of Key objects for rows in an iterator.
* @param iteratorName iterabot binding name
* @return List of Key objects for rows
*/
public static List<Key> keyListForIterator(String iteratorName) {
return keyListForIterator(findIterator(iteratorName));
}
/**
* Get List of Key objects for rows in an iterator.
* @param iter iterator binding
* @return List of Key objects for rows
*/
public static List<Key> keyListForIterator(DCIteratorBinding iter) {
List<Key> attributeList = new ArrayList<Key>();
for (Row r : iter.getAllRowsInRange()) {
attributeList.add(r.getKey());
}
return attributeList;
}
/**
* Get List of Key objects for rows in an iterator using key attribute.
* @param iteratorName iterator binding name
* @param keyAttrName name of key attribute to use
* @return List of Key objects for rows
*/
public static List<Key> keyAttrListForIterator(String iteratorName,
String keyAttrName) {
return keyAttrListForIterator(findIterator(iteratorName), keyAttrName);
}
/**
* Get List of Key objects for rows in an iterator using key attribute.
*
* @param iter iterator binding
* @param keyAttrName name of key attribute to use
* @return List of Key objects for rows
*/
public static List<Key> keyAttrListForIterator(DCIteratorBinding iter,
String keyAttrName) {
List<Key> attributeList = new ArrayList<Key>();
for (Row r : iter.getAllRowsInRange()) {
attributeList.add(new Key(new Object[] { r.getAttribute(keyAttrName) }));
}
return attributeList;
}
/**
* Get a List of attribute values for an iterator.
*
* @param iter iterator binding
* @param valueAttrName name of value attribute to use
* @return List of attribute values
*/
public static List attributeListForIterator(DCIteratorBinding iter,
String valueAttrName) {
List attributeList = new ArrayList();
for (Row r : iter.getAllRowsInRange()) {
attributeList.add(r.getAttribute(valueAttrName));
}
return attributeList;
}
/**
* Find an iterator binding in the current binding container by name.
*
* @param name iterator binding name
* @return iterator binding
*/
public static DCIteratorBinding findIterator(String name) {
DCIteratorBinding iter =
getDCBindingContainer().findIteratorBinding(name);
if (iter == null) {
// throw new IteratorNotFound("Iterator '" + name + "' not found");
}
return iter;
}
public static DCIteratorBinding findIterator(String bindingContainer,
String iterator) {
DCBindingContainer bindings =
(DCBindingContainer)JSFUtils.resolveExpression("#{" +
bindingContainer +
"}");
if (bindings == null) {
throw new RuntimeException("Binding container '" +
bindingContainer + "' not found");
}
DCIteratorBinding iter = bindings.findIteratorBinding(iterator);
if (iter == null) {
throw new RuntimeException("Iterator '" + iterator +
"' not found");
}
return iter;
}
public static JUCtrlValueBinding findCtrlBinding(String name) {
JUCtrlValueBinding rowBinding =
(JUCtrlValueBinding)getDCBindingContainer().findCtrlBinding(name);
if (rowBinding == null) {
throw new RuntimeException("CtrlBinding " + name + "' not found");
}
return rowBinding;
}
/**
* Find an operation binding in the current binding container by name.
*
* @param name operation binding name
* @return operation binding
*/
public static OperationBinding findOperation(String name) {
OperationBinding op =
getDCBindingContainer().getOperationBinding(name);
if (op == null) {
throw new RuntimeException("Operation '" + name + "' not found");
}
return op;
}
/**
* Find an operation binding in the current binding container by name.
*
* @param bindingContianer binding container name
* @param opName operation binding name
* @return operation binding
*/
public static OperationBinding findOperation(String bindingContianer,
String opName) {
DCBindingContainer bindings =
(DCBindingContainer)JSFUtils.resolveExpression("#{" +
bindingContianer +
"}");
if (bindings == null) {
throw new RuntimeException("Binding container '" +
bindingContianer + "' not found");
}
OperationBinding op = bindings.getOperationBinding(opName);
if (op == null) {
throw new RuntimeException("Operation '" + opName + "' not found");
}
return op;
}
/**
* Get List of ADF Faces SelectItem for an iterator binding with description.
*
* Uses the value of the 'valueAttrName' attribute as the key for
* the SelectItem key.
*
* @param iter ADF iterator binding
* @param valueAttrName name of value attribute to use for key
* @param displayAttrName name of the attribute from iterator rows to display
* @param descriptionAttrName name of the attribute for description
* @return ADF Faces SelectItem for an iterator binding with description
*/
public static List<SelectItem> selectItemsForIterator(DCIteratorBinding iter,
String valueAttrName,
String displayAttrName,
String descriptionAttrName) {
List<SelectItem> selectItems = new ArrayList<SelectItem>();
for (Row r : iter.getAllRowsInRange()) {
selectItems.add(new SelectItem(r.getAttribute(valueAttrName),
(String)r.getAttribute(displayAttrName),
(String)r.getAttribute(descriptionAttrName)));
}
return selectItems;
}
/**
* Get List of ADF Faces SelectItem for an iterator binding.
*
* Uses the value of the 'valueAttrName' attribute as the key for
* the SelectItem key.
*
* @param iter ADF iterator binding
* @param valueAttrName name of value attribute to use for key
* @param displayAttrName name of the attribute from iterator rows to display
* @return ADF Faces SelectItem for an iterator binding
*/
public static List<SelectItem> selectItemsForIterator(DCIteratorBinding iter,
String valueAttrName,
String displayAttrName) {
List<SelectItem> selectItems = new ArrayList<SelectItem>();
for (Row r : iter.getAllRowsInRange()) {
selectItems.add(new SelectItem(r.getAttribute(valueAttrName),
(String)r.getAttribute(displayAttrName)));
}
return selectItems;
}
/**
* Get List of ADF Faces SelectItem for an iterator binding.
*
* Uses the value of the 'valueAttrName' attribute as the key for
* the SelectItem key.
*
* @param iter ADF iterator binding
* @param valueAttrName name of value attribute to use for key
* @param displayAttrNames array of attribute names from iterator rows to display
* @return ADF Faces SelectItem for an iterator binding
*/
public static List<SelectItem> selectItemsForIterator(DCIteratorBinding iter,
String valueAttrName,
String[] displayAttrNames) {
List<SelectItem> selectItems = new ArrayList<SelectItem>();
for (Row r : iter.getAllRowsInRange()) {
StringBuilder buf = new StringBuilder();
for (int idx = 0; idx < displayAttrNames.length; idx++) {
buf.append((String)r.getAttribute(displayAttrNames[idx]));
if (idx < (displayAttrNames.length - 1)) {
buf.append("-");
}
}
selectItems.add(new SelectItem(r.getAttribute(valueAttrName),
buf.toString()));
}
return selectItems;
}
/**
* Get List of ADF Faces SelectItem for an iterator binding.
*
* Uses the rowKey of each row as the SelectItem key.
*
* @param iteratorName ADF iterator binding name
* @param displayAttrName name of the attribute from iterator rows to display
* @return ADF Faces SelectItem for an iterator binding
*/
public static List<SelectItem> selectItemsByKeyForIterator(String iteratorName,
String displayAttrName) {
return selectItemsByKeyForIterator(findIterator(iteratorName),
displayAttrName);
}
/**
* Get List of ADF Faces SelectItem for an iterator binding with discription.
*
* Uses the rowKey of each row as the SelectItem key.
*
* @param iteratorName ADF iterator binding name
* @param displayAttrName name of the attribute from iterator rows to display
* @param descriptionAttrName name of the attribute for description
* @return ADF Faces SelectItem for an iterator binding with discription
*/
public static List<SelectItem> selectItemsByKeyForIterator(String iteratorName,
String displayAttrName,
String descriptionAttrName) {
return selectItemsByKeyForIterator(findIterator(iteratorName),
displayAttrName,
descriptionAttrName);
}
/**
* Get List of ADF Faces SelectItem for an iterator binding with discription.
*
* Uses the rowKey of each row as the SelectItem key.
*
* @param iter ADF iterator binding
* @param displayAttrName name of the attribute from iterator rows to display
* @param descriptionAttrName name of the attribute for description
* @return ADF Faces SelectItem for an iterator binding with discription
*/
public static List<SelectItem> selectItemsByKeyForIterator(DCIteratorBinding iter,
String displayAttrName,
String descriptionAttrName) {
List<SelectItem> selectItems = new ArrayList<SelectItem>();
for (Row r : iter.getAllRowsInRange()) {
selectItems.add(new SelectItem(r.getKey(),
(String)r.getAttribute(displayAttrName),
(String)r.getAttribute(descriptionAttrName)));
}
return selectItems;
}
/**
* Get List of ADF Faces SelectItem for an iterator binding.
*
* Uses the rowKey of each row as the SelectItem key.
*
* @param iter ADF iterator binding
* @param displayAttrName name of the attribute from iterator rows to display
* @return List of ADF Faces SelectItem for an iterator binding
*/
public static List<SelectItem> selectItemsByKeyForIterator(DCIteratorBinding iter,
String displayAttrName) {
List<SelectItem> selectItems = new ArrayList<SelectItem>();
for (Row r : iter.getAllRowsInRange()) {
selectItems.add(new SelectItem(r.getKey(),
(String)r.getAttribute(displayAttrName)));
}
return selectItems;
}
/**
* Find the BindingContainer for a page definition by name.
*
* Typically used to refer eagerly to page definition parameters. It is
* not best practice to reference or set bindings in binding containers
* that are not the one for the current page.
*
* @param pageDefName name of the page defintion XML file to use
* @return BindingContainer ref for the named definition
*/
private static BindingContainer findBindingContainer(String pageDefName) {
BindingContext bctx = getDCBindingContainer().getBindingContext();
BindingContainer foundContainer =
bctx.findBindingContainer(pageDefName);
return foundContainer;
}
public static void printOperationBindingExceptions(List opList) {
if (opList != null && !opList.isEmpty()) {
for (Object error : opList) {
LOGGER.severe(error.toString());
}
}
}
/**
* Get the page flow scope
* @return
*/
public static Map getPageFlowScope() {
return AdfFacesContext.getCurrentInstance().getPageFlowScope();
}
/**
* Open a new browser tab/window starting a new bounded task flow.
*
* @param taskFlowId - id of bounded task flow to show in new window
* @param taskFlowParams - params for the task flow (if any)
* @param windowName - name of browser tab/window (window.name)
* @param openInWindow - true will open a browser window (if settings of the browser
* allow this), false will open a new browser tab.
*/
public static void launchTaskFlowInNewWindow(TaskFlowId taskFlowId,
Map taskFlowParams,
String windowName,
boolean openInWindow) {
launchTaskFlowInNewWindow(taskFlowId, taskFlowParams, windowName,
openInWindow, 1000, 750);
}
/**
* Open a new browser tab/window starting a new bounded task flow.
*
* @param taskFlowId - id of bounded task flow to show in new window
* @param taskFlowParams - params for the task flow (if any)
* @param windowName - name of browser tab/window (window.name)
* @param openInWindow - true will open a browser window (if settings of the browser
* allow this), false will open a new browser tab.
* @param width
* @param height
*/
public static void launchTaskFlowInNewWindow(TaskFlowId taskFlowId,
Map taskFlowParams,
String windowName,
boolean openInWindow,
int width, int height) {
String url =
ControllerContext.getInstance().getTaskFlowURL(false, taskFlowId,
taskFlowParams);
if (url == null) {
throw new Error("Unable to launch window for task flow id " +
taskFlowId);
}
FacesContext context = FacesContext.getCurrentInstance();
ExtendedRenderKitService extendedRenderKitService =
Service.getService(context.getRenderKit(),
ExtendedRenderKitService.class);
// Build javascript to open a new browser tab/window
StringBuilder script = new StringBuilder();
// Unable to get a named firefox tab to gain focus. To workaround
// issue we close the tab first, then open it.
if (!openInWindow && windowName != null) {
script.append("var hWinx = window.open(\"");
script.append("about:blank"); // the URL
script.append("\",\"");
script.append(windowName);
script.append("\"");
script.append(");");
script.append("\n");
script.append("hWinx.close();\n");
}
// Set a variable with the window properties
script.append("var winProps = \"status=yes,toolbar=no,copyhistory=no,width=" +
width + ",height=" + height + "\";");
// If we aren't going to open in a new window, then clear the window properties
if (!openInWindow) {
script.append("winProps = '';");
}
// Set isOpenerValid to true if window.opener (a parent window) is defined and open
script.append("var isOpenerValid = (typeof(window.opener) != 'undefined' && window.opener != undefined && !window.opener.closed);");
// Set useProps to true if openInWindow is true or isOpenerValid is true
script.append("var useProps = (" + openInWindow +
" || isOpenerValid);");
// Set win to the current window, unless we need to use the parent, then set to window.opener (the parent window)
script.append("var win = window; if (typeof(isChildWindow) != 'undefined' && isChildWindow != undefined && isChildWindow == true && isOpenerValid) {win = window.opener;}");
// Set hWin to the window returned by calling open on win
script.append("var hWin = win.open(\"");
script.append(url); // the URL
script.append("\",\"");
script.append(windowName);
script.append("\"");
script.append(", winProps");
script.append(");");
// Set focus to the window opened.
script.append("hWin.focus();");
extendedRenderKitService.addScript(context, script.toString());
}
public static void executeClientSideScript(String script) {
FacesContext context = FacesContext.getCurrentInstance();
ExtendedRenderKitService extendedRenderKitService =
Service.getService(context.getRenderKit(),
ExtendedRenderKitService.class);
extendedRenderKitService.addScript(context, script);
}
/**
* Get the id of the RichShowDetailItem which is currently disclosed within the
* RichPanelTabbed or null if no children disclosed.
*
* @param panelTabbed
* @return
*/
public static String getDisclosedDetailItemId(RichPanelTabbed panelTabbed) {
RichShowDetailItem item = getDisclosedDetailItem(panelTabbed);
if (item != null) {
return item.getId();
}
return null;
}
/**
* Get the RichShowDetailItem which is currently disclosed within the
* RichPanelTabbed or null if no children disclosed.
*
* @param panelTabbed
* @return
*/
public static RichShowDetailItem getDisclosedDetailItem(RichPanelTabbed panelTabbed) {
if (panelTabbed != null) {
Iterator iter = panelTabbed.getChildren().iterator();
// Loop through all the child components
while (iter.hasNext()) {
UIComponent component = (UIComponent)iter.next();
// Make sure we only check components that are detailItems
if (component instanceof RichShowDetailItem) {
RichShowDetailItem detailItem =
(RichShowDetailItem)component;
if (detailItem.isDisclosed()) {
return detailItem;
}
}
}
}
return null;
}
/**
* Helper method to check if a UI component value
* is null or empty.
* @param component UIComponent
* @return true / false
*/
public static boolean isEmpty(UIComponent component) {
boolean isEmpty = false;
if (component == null) {
isEmpty = true;
} else {
// for a text field, check the value as a String
if (component instanceof RichInputText) {
RichInputText textField = (RichInputText)component;
if (textField.getValue() == null ||
((String)textField.getValue()).length() <= 0) {
isEmpty = true;
}
}
}
return isEmpty;
}
/**
* Get the list containging the selected rows for the given table <br/>
* Make sure the ADF table definition does not have the selection listener
* and the make current set.
* @param table
* @return
*/
public static List<Row> getSelectedRows(RichTable table) {
List<Row> rows = new ArrayList<Row>();
// get the selected row keys (iterator)
Iterator keyIter = table.getSelectedRowKeys().iterator();
// remember selected row keys
Object oldKey = table.getRowKey();
// loop for each selection
while (keyIter.hasNext()) {
}
// restore originally selected rows
table.setRowKey(oldKey);
return rows;
}
public static void printRow(Row row) {
System.out.println("\nSTART " + row.getKey() +
" *********************");
for (int i = 0; i < row.getAttributeCount(); i++) {
System.out.println("row[" + row.getAttributeNames()[i] + "]:[" +
row.getAttribute(i) + "]");
}
System.out.println("END " + row.getKey() +
"*********************\n");
}
/**
* Get a List of attributes as a Map (of name, value) for an iterator.
* @param iter iterator binding
* @param keyAttrName attribut name for the key of the map
* @param valueAttrName attribut name for the value
* @return Map of attribute values
*/
public static Map<Object, Object> attributesMapForIterator(DCIteratorBinding iter,
String keyAttrName,
String valueAttrName) {
Map<Object, Object> amap = new HashMap<Object, Object>();
for (Row r : iter.getAllRowsInRange()) {
amap.put(r.getAttribute(keyAttrName),
r.getAttribute(valueAttrName));
}
return amap;
}
/**
* Get a List of attributes as a Map (of name, value) for an iterator.
* @param iteratorName ADF iterator binding name
* @param keyAttrName attribut name for the key of the map
* @param valueAttrName attribut name for the value
* @return Map of attribute values
*/
public static Map<Object, Object> attributeMapForIterator(String iteratorName,
String keyAttrName,
String valueAttrName) {
return attributesMapForIterator(findIterator(iteratorName),
keyAttrName, valueAttrName);
}
public static Object invokeMethodExpression(String expr, Class returnType,
Class[] argTypes,
Object[] args) {
FacesContext fc = FacesContext.getCurrentInstance();
ELContext elctx = fc.getELContext();
ExpressionFactory elFactory =
fc.getApplication().getExpressionFactory();
MethodExpression methodExpr =
elFactory.createMethodExpression(elctx, expr, returnType,
argTypes);
return methodExpr.invoke(elctx, args);
}
public static Object invokeMethodExpression(String expr, Class returnType,
Class argType,
Object argument) {
return invokeMethodExpression(expr, returnType,
new Class[] { argType },
new Object[] { argument });
}
/**
* Programmatic evaluation of EL.
*
* @param el EL to evaluate
* @return Result of the evaluation
*/
public static Object evaluateEL(String el) {
FacesContext facesContext = FacesContext.getCurrentInstance();
ELContext elContext = facesContext.getELContext();
ExpressionFactory expressionFactory =
facesContext.getApplication().getExpressionFactory();
ValueExpression exp =
expressionFactory.createValueExpression(elContext, el,
Object.class);
return exp.getValue(elContext);
}
/**
* Programmatic invocation of a method that an EL evaluates to.
* The method must not take any parameters.
*
* @param el EL of the method to invoke
* @return Object that the method returns
*/
public static Object invokeEL(String el) {
return invokeEL(el, new Class[0], new Object[0]);
}
/**
* Programmatic invocation of a method that an EL evaluates to.
*
* @param el EL of the method to invoke
* @param paramTypes Array of Class defining the types of the parameters
* @param params Array of Object defining the values of the parametrs
* @return Object that the method returns
*/
public static Object invokeEL(String el, Class[] paramTypes,
Object[] params) {
FacesContext facesContext = FacesContext.getCurrentInstance();
ELContext elContext = facesContext.getELContext();
ExpressionFactory expressionFactory =
facesContext.getApplication().getExpressionFactory();
MethodExpression exp =
expressionFactory.createMethodExpression(elContext, el,
Object.class, paramTypes);
return exp.invoke(elContext, params);
}
}
参考文献
1.http://jdeveloper-adf.googlecode.com/svn/trunk/TGPrototype2/ViewController/src/com/tgslc/defaultManagement/utils/ADFUtils.java
[ADF技术-007] JSFUtils.java-ADF工具类
package view;
import java.util.HashMap;
import java.util.Locale;
import java.util.Map;
import java.util.MissingResourceException;
import java.util.ResourceBundle;
import javax.faces.application.Application;
import javax.faces.application.FacesMessage;
import javax.faces.component.UIViewRoot;
import javax.faces.context.FacesContext;
import javax.faces.el.ValueBinding;
import javax.faces.model.SelectItem;
import javax.servlet.http.HttpServletResponse;
import oracle.adf.model.binding.DCIteratorBinding;
import oracle.binding.BindingContainer;
import oracle.jbo.Row;
import oracle.jbo.ViewObject;
/**
* Utils for webpages.
*
*/
public class JSFUtils {
private static final String NO_RESOURCE_FOUND = "Missing resource: ";
private static Map<String, SelectItem> selectItems =
new HashMap<String, SelectItem>();
/**
* Method for taking a reference to a JSF binding expression and returning
* the matching object (or creating it).
* @param expression
* @return Managed object
*/
public static Object resolveExpression(String expression) {
FacesContext ctx = FacesContext.getCurrentInstance();
Application app = ctx.getApplication();
ValueBinding bind = app.createValueBinding(expression);
return bind.getValue(ctx);
}
/**
* Convenience method for resolving a reference to a managed bean by name
* rather than by expression.
* @param beanName
* @return Managed object
*/
public static Object getManagedBeanValue(String beanName) {
StringBuffer buff = new StringBuffer("#{");
buff.append(beanName);
buff.append("}");
return resolveExpression(buff.toString());
}
/**
* Method for setting a new object into a JSF managed bean.
* Note: will fail silently if the supplied object does
* not match the type of the managed bean
* @param expression
* @param newValue
*/
public static void setExpressionValue(String expression, Object newValue) {
FacesContext ctx = FacesContext.getCurrentInstance();
Application app = ctx.getApplication();
ValueBinding bind = app.createValueBinding(expression);
Class bindClass = bind.getType(ctx);
if (bindClass.isPrimitive() || bindClass.isInstance(newValue)) {
bind.setValue(ctx, newValue);
}
}
public static void setManagedBeanValue(String beanName, Object newValue) {
StringBuffer buff = new StringBuffer("#{");
buff.append(beanName);
buff.append("}");
setExpressionValue(buff.toString(), newValue);
}
public static void storeOnSession(String key, Object object) {
FacesContext ctx = FacesContext.getCurrentInstance();
Map sessionState = ctx.getExternalContext().getSessionMap();
sessionState.put(key, object);
}
public static Object getFromSession(String key) {
FacesContext ctx = FacesContext.getCurrentInstance();
Map sessionState = ctx.getExternalContext().getSessionMap();
return sessionState.get(key);
}
public static Object getSession() {
return FacesContext.getCurrentInstance().getExternalContext().getSession(true);
}
public static Object getFromRequest(String key) {
FacesContext ctx = FacesContext.getCurrentInstance();
Map reqMap = ctx.getExternalContext().getRequestMap();
return reqMap.get(key);
}
public static String getStringFromBundle(String key) {
ResourceBundle bundle = getBundle();
return getStringSafely(bundle, key, null);
}
public static FacesMessage getMessageFromBundle(String key,
FacesMessage.Severity severity) {
ResourceBundle bundle = getBundle();
String summary = getStringSafely(bundle, key, null);
String detail = getStringSafely(bundle, key + "_detail", summary);
FacesMessage message = new FacesMessage(summary, detail);
message.setSeverity(severity);
return message;
}
public static void addFacesErrorMessage(String msg) {
FacesContext ctx = FacesContext.getCurrentInstance();
FacesMessage fm =
new FacesMessage(FacesMessage.SEVERITY_ERROR, msg, "");
ctx.addMessage(getRootViewComponentId(), fm);
}
public static void addFacesInfoMessage(String msg) {
FacesContext ctx = FacesContext.getCurrentInstance();
FacesMessage fm =
new FacesMessage(FacesMessage.SEVERITY_INFO, msg, "");
ctx.addMessage(getRootViewComponentId(), fm);
}
public static void addFacesErrorMessage(String attrName, String msg) {
FacesContext ctx = FacesContext.getCurrentInstance();
FacesMessage fm =
new FacesMessage(FacesMessage.SEVERITY_ERROR, attrName, msg);
ctx.addMessage(getRootViewComponentId(), fm);
}
public static String getRootViewId() {
FacesContext ctx = FacesContext.getCurrentInstance();
return ctx.getViewRoot().getViewId();
}
public static String getRootViewComponentId() {
FacesContext ctx = FacesContext.getCurrentInstance();
return ctx.getViewRoot().getId();
}
private static ResourceBundle getBundle() {
FacesContext ctx = FacesContext.getCurrentInstance();
UIViewRoot uiRoot = ctx.getViewRoot();
Locale locale = uiRoot.getLocale();
ClassLoader ldr = Thread.currentThread().getContextClassLoader();
return ResourceBundle.getBundle(ctx.getApplication().getMessageBundle(),
locale, ldr);
}
private static String getStringSafely(ResourceBundle bundle, String key,
String defaultValue) {
String resource = null;
try {
resource = bundle.getString(key);
} catch (MissingResourceException mrex) {
if (defaultValue != null) {
resource = defaultValue;
} else {
resource = NO_RESOURCE_FOUND + key;
}
}
return resource;
}
public static SelectItem getSelectItem(String value) {
SelectItem item = selectItems.get(value);
if (item == null) {
item = createNewSelectItem(value, value);
selectItems.put(value, item);
}
return item;
}
public static SelectItem createNewSelectItem(String label, String value) {
return new SelectItem(value, label);
}
public static HttpServletResponse getResponse() {
FacesContext ctx = FacesContext.getCurrentInstance();
HttpServletResponse response =
(HttpServletResponse)ctx.getExternalContext().getResponse();
return response;
}
public static BindingContainer getBindingContainer() {
return (BindingContainer)JSFUtils.resolveExpression("#{bindings}");
}
public static boolean hasRecords(String iteratorName) {
Row[] rows = getAllRows(iteratorName);
if ((rows == null) || (rows.length == 0)) {
return false;
}
return true;
}
public static void setIteratorPosition(String iteratorName,
String whereClause) throws Exception {
ViewObject viewObject = getViewObject(iteratorName);
if (viewObject.getWhereClause() != null) {
viewObject.setWhereClauseParams(null);
viewObject.executeQuery();
}
viewObject.setWhereClause(whereClause);
// viewObject.defineNamedWhereClauseParam(param, null, null);
// viewObject.setNamedWhereClauseParam(param, value);
viewObject.executeQuery();
}
public static ViewObject getViewObject(String iteratorName) {
ViewObject viewObject = null;
BindingContainer bindings = JSFUtils.getBindingContainer();
if (bindings != null) {
DCIteratorBinding iter =
(DCIteratorBinding)bindings.get(iteratorName);
viewObject = iter.getViewObject();
}
return viewObject;
}
public static Row[] getAllRows(String iteratorName) {
ViewObject vObject = getViewObject(iteratorName);
vObject.executeQuery();
Row[] rows = vObject.getAllRowsInRange();
return rows;
}
public static ViewObject executeViewObject(String iteratorName) {
ViewObject vObject = getViewObject(iteratorName);
vObject.executeQuery();
System.out.println("....Total rows..." + vObject.getRowCount());
return vObject;
}
public static Row getCurrentRow(String iteratorName) {
BindingContainer bindings = getBindingContainer();
Row currentRow = null;
if (bindings != null) {
DCIteratorBinding iter =
(DCIteratorBinding)bindings.get(iteratorName);
ViewObject vObject = iter.getViewObject();
currentRow = vObject.getCurrentRow();
}
return currentRow;
}
public static void executeIterator(String iteratorName) {
BindingContainer bindings = getBindingContainer();
if (bindings != null) {
DCIteratorBinding iter =
(DCIteratorBinding)bindings.get(iteratorName);
ViewObject vObject = iter.getViewObject();
vObject.executeQuery();
}
}
public static Object getCurrentRowAttribute(String iteratorName,
String attributeName) {
Row row = getCurrentRow(iteratorName);
return row.getAttribute(attributeName);
}
public static Object getFromRequestParameterMap(String key) {
FacesContext ctx = FacesContext.getCurrentInstance();
return ctx.getExternalContext().getRequestParameterMap().get(key);
}
public static FacesContext getFacesContext() {
return FacesContext.getCurrentInstance();
}
public static void postMessageToFacesContext(FacesMessage.Severity severity,
String summary,
String detail) {
postMessage(null, severity, summary, detail);
}
public static void postMessage(String componentId,
FacesMessage.Severity severity,
String summary, String detail) {
getFacesContext().addMessage(componentId,
new FacesMessage(severity, summary,
detail));
}
}
参考文献
1.http://jdeveloper-adf.googlecode.com/svn/trunk/TGPrototype2/ViewController/src/com/tgslc/defaultManagement/utils/JSFUtils.java
[ADF技术-006] TaskFlowUtils.java-ADF工具类
package view;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import javax.faces.application.Application;
import javax.faces.context.FacesContext;
import oracle.adf.controller.ControllerContext;
import oracle.adf.controller.TaskFlowContext;
import oracle.adf.controller.TaskFlowId;
import oracle.adf.controller.ViewPortContext;
import oracle.adf.controller.metadata.MetadataService;
import oracle.adf.controller.metadata.model.DataControlScopeType;
import oracle.adf.controller.metadata.model.NamedParameter;
import oracle.adf.controller.metadata.model.TaskFlowDefinition;
import oracle.adf.controller.metadata.model.TaskFlowInputParameter;
import oracle.adf.controller.metadata.model.TransactionType;
import oracle.adf.model.BindingContext;
import oracle.adf.model.DataControlFrame;
import oracle.adf.model.binding.DCDataControl;
import oracle.adf.view.rich.context.AdfFacesContext;
/**
* ADF task flow utilities for use with JDev/ADF 11g+.
*
* Available under the Creative Commons Attribution 3.0 Unported License.
* See: http://one-size-doesnt-fit-all.blogspot.com/p/terms-conditions.html
*
* Absolutely no warranty implied, *use*at*your*own*risk*. This code has been mostly used
* for checking task flow features and hasn't been used in a production environment.
*
* Author: Chris Muir @ Oracle.com
* Date: 19th April 2012
*/
public class TaskFlowUtils {
public String getTaskFlowName() {
MetadataService metadataService = MetadataService.getInstance();
TaskFlowDefinition taskFlowDefinition = metadataService.getTaskFlowDefinition(getCurrentTaskFlowId());
String taskFlowName = null;
if (taskFlowDefinition != null) {
TaskFlowId taskFlowId = taskFlowDefinition.getTaskFlowId();
if (taskFlowId != null)
taskFlowName = taskFlowDefinition.getTaskFlowId().getFullyQualifiedName();
else
taskFlowName = "Null";
} else
taskFlowName = "Null";
return taskFlowName;
}
public String getTaskFlowControlScopeName() {
MetadataService metadataService = MetadataService.getInstance();
String controlScopeTypeString;
TaskFlowDefinition taskFlowDefinition = metadataService.getTaskFlowDefinition(getCurrentTaskFlowId());
if (taskFlowDefinition != null) {
String taskFlowName = taskFlowDefinition.getTaskFlowId().getFullyQualifiedName();
DataControlScopeType controlScopeType = taskFlowDefinition.getDataControlScopeType();
if (controlScopeType == null || controlScopeType == DataControlScopeType.SHARED)
controlScopeTypeString = "Shared Data Control Scope";
else if (controlScopeType == DataControlScopeType.ISOLATED)
controlScopeTypeString = "Isolated Data Control Scope";
else
controlScopeTypeString = "UNKNOWN Data Control Scope";
} else
controlScopeTypeString = "Null";
return controlScopeTypeString;
}
public String getTaskFlowControlTransactionTypeName() {
MetadataService metadataService = MetadataService.getInstance();
String transactionTypeString;
TaskFlowDefinition taskFlowDefinition = metadataService.getTaskFlowDefinition(getCurrentTaskFlowId());
if (taskFlowDefinition != null) {
String taskFlowName = taskFlowDefinition.getTaskFlowId().getFullyQualifiedName();
TransactionType transactionType = taskFlowDefinition.getTransactionType();
if (transactionType == null)
transactionTypeString = "-No Controller Transaction-";
else if (transactionType == TransactionType.NEW_TRANSACTION)
transactionTypeString = "Always Begin New Transaction";
else if (transactionType == TransactionType.REQUIRES_TRANSACTION)
transactionTypeString = "Use Existing Transaction if Possible";
else if (transactionType == TransactionType.REQUIRES_EXISTING_TRANSACTION)
transactionTypeString = "Always Use Existing Transaction";
else
transactionTypeString = "UNKNOWN Transaction Type";
} else
transactionTypeString = "Null";
return transactionTypeString;
}
public HashMap<String, String> formatTaskFlowParameters(Map btfParameters) {
HashMap<String, String> taskFlowParameterValues = new HashMap<String, String>();
FacesContext facesContext = FacesContext.getCurrentInstance();
Application application = facesContext.getApplication();
AdfFacesContext adfFacesContext = AdfFacesContext.getCurrentInstance();
Map<String, Object> pageFlowScope = adfFacesContext.getPageFlowScope();
for (Object parameter : btfParameters.values()) {
NamedParameter namedParameter = (NamedParameter)parameter;
String parameterName = namedParameter.getName();
String parameterExpression = namedParameter.getValueExpression();
Object parameterValue;
String stringValue;
if (parameterExpression == null) {
parameterValue = pageFlowScope.get(parameterName);
} else {
parameterValue = application.evaluateExpressionGet(facesContext, parameterExpression, Object.class);
}
if (parameterValue != null) {
try {
stringValue = parameterValue.toString();
} catch (Exception e) {
stringValue = "<complex>";
}
} else {
stringValue = "<null>";
}
taskFlowParameterValues.put(parameterName, stringValue);
}
return taskFlowParameterValues;
}
public TaskFlowId getCurrentTaskFlowId() {
ControllerContext controllerContext = ControllerContext.getInstance();
ViewPortContext currentViewPort = controllerContext.getCurrentViewPort();
TaskFlowContext taskFlowContext = currentViewPort.getTaskFlowContext();
TaskFlowId taskFlowId = taskFlowContext.getTaskFlowId();
return taskFlowId;
}
public TaskFlowDefinition getTaskFlowDefinition(TaskFlowId taskFlowId) {
MetadataService metadataService = MetadataService.getInstance();
TaskFlowDefinition taskFlowDefinition = metadataService.getTaskFlowDefinition(taskFlowId);
return taskFlowDefinition;
}
public Map<String, TaskFlowInputParameter> getCurrentTaskFlowInputParameters() {
return getInputParameters(getCurrentTaskFlowId());
}
public Map<String, TaskFlowInputParameter> getInputParameters(TaskFlowId taskFlowId) {
TaskFlowDefinition taskFlowDefinition = getTaskFlowDefinition(taskFlowId);
Map<String, TaskFlowInputParameter> taskFlowInputParameters = taskFlowDefinition.getInputParameters();
return taskFlowInputParameters;
}
public Map<String, NamedParameter> getCurrentTaskFlowReturnParameters() {
return getReturnParameters(getCurrentTaskFlowId());
}
public Map<String, NamedParameter> getReturnParameters(TaskFlowId taskFlowId) {
TaskFlowDefinition taskFlowDefinition = getTaskFlowDefinition(taskFlowId);
Map<String, NamedParameter> namedParameters = taskFlowDefinition.getReturnValues();
return namedParameters;
}
public String getDataControlFrameName() {
BindingContext bindingContext = oracle.adf.controller.binding.BindingUtils.getBindingContext();
String dataControlFrameName = bindingContext.getCurrentDataControlFrame();
return dataControlFrameName;
}
public DataControlFrame getDataControlFrame() {
BindingContext bindingContext = oracle.adf.controller.binding.BindingUtils.getBindingContext();
String dataControlFrameName = bindingContext.getCurrentDataControlFrame();
DataControlFrame dataControlFrame = bindingContext.findDataControlFrame(dataControlFrameName);
return dataControlFrame;
}
public void commitTaskFlow() {
getDataControlFrame().commit();
}
public void rollbackTaskFlow() {
getDataControlFrame().rollback();
}
public boolean isTaskFlowTransactionDirty() {
return getDataControlFrame().isTransactionDirty();
}
public String getOpenTransactionName() {
return getDataControlFrame().getOpenTransactionName();
}
public String getDataControlNames() {
BindingContext bindingContext = oracle.adf.controller.binding.BindingUtils.getBindingContext();
String dataControlFrameName = bindingContext.getCurrentDataControlFrame();
DataControlFrame dataControlFrame = bindingContext.findDataControlFrame(dataControlFrameName);
Collection<DCDataControl> dataControls = dataControlFrame.datacontrols();
String names = "";
for (DCDataControl dc : dataControls) {
names = names + "," + dc.getName() + dc.hashCode();
}
return names;
}
}
参考文献
1.https://java.net/downloads/adfemg/TaskFlowUtils.java
[ADF技术-005] Table中Row在最后插入
应用场景:很难具体分析- -.....
1.创建类ViewObjectImplExt继承ViewObjectImpl
2.重写insertRow方法
public void insertRow(Row row) {
//super.insertRow(row);
//row.removeAndRetain();
last();
next();
getDefaultRowSet().insertRow(row);
}
3.让CompanyEOViewImpl继承ViewObjectImplExt
这样就大功告成了...
效果如下:
1.创建类ViewObjectImplExt继承ViewObjectImpl
2.重写insertRow方法
public void insertRow(Row row) {
//super.insertRow(row);
//row.removeAndRetain();
last();
next();
getDefaultRowSet().insertRow(row);
}
3.让CompanyEOViewImpl继承ViewObjectImplExt
这样就大功告成了...
效果如下:
[ADF技术-004] Table中增加统计字段
应用场景:统计一个机构下面有多少个员工,统计一个部门员工工资总共多少等
效果如下:
本例子中用到的表结构如下
基础表:Users,Company
关联表:CompanyUsers
1.找到CompanyEOView，增加一个新的属性
2.填个名字
3.出来了一个新的属性,类型Integer，如果是有小数点的数字(如:金额)最好类型改成BigDecimal！
4.检查CompanyUsers与Company 是否存在关联关系（是否存在ViewLink）,如存在,点Accessors右边的铅笔
5.把Source Accessor-In View Object的勾勾上，这个勾的意义就是在Master表中生成访问Detail表的方法（注意：图中的对话框不一定是Source是Master表，Destination是Detail表，所以选择的时候看清楚）
6.找到Company表的rowImpl类,确认其中是否存在刚才生成的关联关系
7.选择UserCount，default value 选择表达式（Expression）
value中输入CompanyUsersEOView.count("CompanyId")
CompanyUsersEOView：rowImpl中的关联字段的名字
Count：groovy提供的函数，还有sum，avg，min，max，一共五个函数
CompanyId：CompanyUsersEOView中的字段，需要统计的字段
refresh expression value 默认为true就可以了
这样就大功告成了！
该字段也不会同步到数据库，并且实时刷新！
效果如下:
参考文献:
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