Ashish Awasthi's Blog

Tuesday, 17 June 2014

Detect browser & platform information (name,version), server and client IP details in Oracle ADF

Hello All,
This is post is about getting browser details (version, name ) , platform details (Operating System details) ,server and client IP addresses in Oracle ADF Application
sometimes we need these small but important details -

Code to get this information-

        RequestContext requestCtx = RequestContext.getCurrentInstance();
        Agent agent = requestCtx.getAgent();
        String version = agent.getAgentVersion();
        String browser = agent.getAgentName();
        String platform = agent.getPlatformName();
        String platformVersion = agent.getPlatformVersion();
        FacesContext fctx = FacesContext.getCurrentInstance();
        HttpServletRequest request = (HttpServletRequest) fctx.getExternalContext().getRequest();
        StringBuilder detailMsg = new StringBuilder("<html><body><b>Browser Agent and Ip address details</b><br>");
        detailMsg.append("<ul><li><b>Browser-</b>" + browser + "</li><li><b>Version-</b>" + version +
                         "</li><li><b>Plateform-</b>" + platform + "</li>");
        detailMsg.append("<li><b>Plateform Version-</b>" + platformVersion + "</li><li><b>Server IP-</b>" +
                         request.getLocalAddr() + "</li><li><b>Client IP-</b>" + request.getRemoteAddr() +
                         "</li></ul>");
        detailMsg.append("</body></html>");
        FacesMessage errMsg = new FacesMessage(detailMsg.toString());
        errMsg.setSeverity(FacesMessage.SEVERITY_INFO);
        fctx.addMessage(null, errMsg);

See the output-
Application running on Mozilla-

Application running on Chrome-

Application running on Internet Explorer-

Cheers :) Happy Learning

Post by Oracle JDeveloper.

Monday, 16 June 2014

Creating and Exporting hierarchical data to excel using dvt:pivotTable & dvt:exportPivotTableData in Oracle ADF

Hello All,
This post is about exporting tree structured(hierarchical ) data to an excel file.
suppose we have export department wise detail of employees , we can achieve this in ADF using pivot table (<dvt:pivotTable>)

What is pivot tabel (oracle docs)-

UIComponent class: oracle.adf.view.faces.bi.component.pivotTable.UIPivotTable
Component type: oracle.dss.adf.pivotTable.PivotTable
The Pivot Table supports the display of multiple nested attributes on a row and column header. In addition, the Pivot Table supports the ability to dynamically change the layout of the attributes displayed in the row or column headers via drag and drop pivoting.
now see the implementation part -

Create a Fusion Web Application using HRSchema , for this sample app i have created a view (Department Wise Employees) to export data

CREATE OR REPLACE FORCE EDITIONABLE VIEW "APP_USR"."DEPT_EMP" ("DEPARTMENT_NAME", "EMPLOYEE_NAME", "SALARY") AS 
  SELECT A.DEPARTMENT_NAME, B.FIRST_NAME,B.SALARY FROM DEPARTMENTS A, EMPLOYEES B WHERE A.DEPARTMENT_ID=B.DEPARTMENT_ID (+);

Prepare model using this view

Create a page and drop this view as pivot table (ADF Faces component) from data control

Now configure pivot table (set row & column attributes, insert appropriate drilling) - see the snaps

Now run your page and see working pivot table - here pivot table is created successfully

Drop a button and a <dvt:exportPivotTableData> under button to export pivot table

<af:commandButton text="Export" id="b1">
                    <dvt:exportPivotTableData type="excelHTML" exportedId="pt1" filename="Dep_Empl.xls"
                                              title="PivotTable export"/>
                </af:commandButton>

Run your page and click on export button and see your tree structured data in exported excel file

Cheers :) Happy Learning Sample ADF Application

Tuesday, 10 June 2014

Export ViewObject dataset to XML, Generate customized XML file using ViewObject in Oracle ADF

Hello All,
this post is about exporting a viewObject data to a XML document.
Sometimes we need to generate XML document with the same data in ViewObject, for this ADF provides a facility to directly export data to a XML document using ViewObjectImpl class

See the steps to generate XML for a ViewObject

Create a Fusion Web application and model using HR schema (Departments & Employees) table (master detail relation using viewLink)

Now to generate XML, i have used writeXML method of ViewObjectImpl class, it produce XML using two parameters

from oracle docs-

writeXML(int depthCount, long options)

XMLInterface.XML_OPT_ALL_ROWS

XMLInterface.XML_OPT_LIMIT_RANGE

created a method in DepartmentsVOImpl class to export data to XML, added it to client Interface

    /**Method to generate XML from ViewObject data
     * @param level
     * @return
     */
    public String writeVoToXml(int level) {
        FileOutputStream out;
        ByteArrayOutputStream opStream = new ByteArrayOutputStream();
        try {
            // Generating XML for All rows and adding it to Output Stream
            ((XMLNode) this.writeXML(level, XMLInterface.XML_OPT_ALL_ROWS)).print(opStream);
            System.out.println(opStream);
            // Creating a XML document in D Drive
            out = new FileOutputStream("D://Departments.xml");
            out.close();

        } catch (Exception e) {
            System.out.println(e.getMessage());
        }

        return opStream.toString();

    }

Now run application module to execute method and see generated XML on console

i have created a simple page with a af:codeEditor to show generated XML , button to generate XML and a spinner to pass depth level of viewLink accessor

In case depth level is '0' , it export data only for Departments viewObject

Change level to '1' , Now it generate XML for Departments --> Employess relation

now to how to customize XML ? How to change default tags for attribute names and rows ?
To change attribute label (tag in xml)- Suppose i have to change DepartmentName to Name in XML
Add attribute level custom property named XML_ELEMENT to a value AnyOtherName to change the XML element name used for that attribute

To change Row label (tag in xml)- Suppose i have to change DepartmentsVORow to DepartmentLine in XML
Add ViewObject level custom property named XML_ROW_ELEMENT to a value AnyOtherName to change the XML element name used for that Row

Now Run and see generated XML -

Cheers :-) Happy Learning

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