Setting up HTTPD Server in Oracle Linux

Setting up HTTPD Server in Oracle Linux:

Pre-Requisite:

Down load tomcat-connectors-1.2.37-src.tar.gz(or latest version) and copy the file to the server

Steps to setup HTTPD Server

Login as root user(or create user for httpd an provide all the access required to install httpd) to server and execute the following commands

                             yum install httpd httpd-devel gcc gcc-c++
                             yum install make
                             yum install glibc-devel.x86_64 --disablerepo=adobe\*

CD to the folder where tomcat-connectors-1.2.37-src.tar.gz file is copied and execute the following commands

                             gunzip < tomcat-connectors-1.2.37-src.tar.gz | tar xvf –

cd /<<Base Dir >>/tomcat-connectors-1.2.37-src/native and execute the following commands

                          ./configure --with-apxs=/usr/sbin/apxs --enable-api-compatibility
                          make
                          make install

The httpd server is successfully setup now.

Start/Stop the httpd instance:

Login as root user(or the user that used to install httpd server) to server and execute
                         /etc/init.d/httpd start
                        /etc/init.d/httpd stop

The server can be accessed through http://<<Server IP>>/

Populating DOJO dropdown list based on JSON Data

Populating DOJO dropdown list based on JSON Data:

<select data-dojo-type=dijit.form.Select data-dojo-props='name:"dcDistcode"' missingMessage="Enter the Distict code" style="width: 180px" id="dcDistcode"></select>

var data ={"identifier":"value","items":[],"label":"distcode"};
            var len = newContent.length;   
            data.items.push(dojo.mixin({"distcode": "--SELECT--"},{"value": ""}));           
               
            for(var i=0; i < len ; ++i){       
                data.items.push(dojo.mixin({"distcode": newContent[i].dcDistcode+' - '+newContent[i].dcDistname},{"value": newContent[i].dcDistcode}));           
            }
             var distStore = dojo.data.ItemFileReadStore({data: data});
             dijit.byId("dcDistcode").setStore(distStore);


identifier specifies the value for the drop down list,  label specifies the display label for the drop down list.

newContent is the JSON data received from the server.

Converting the JSON text to Javascript Object

Converting the JSON text to Javascript Object:

We can use two approaches eval function or JSON parser 

Eval function:

var jsonText="{success:false,error: 'Invalid Data'}"  

var dataObject = eval('(' + jsonText+ ')');  

The properties can be accessed from dataObject. 

var errorMessage=dataObject.error; 

The eval function is very fast. However, it can compile and execute any 

JavaScript

program so this may create security issue, if the JSON text source is trustable

the eval function can be used 

JSON Parser:

var dataObject= JSON.parse(jsonText); 

Converting the Object to JSON String:  

var jsonText= JSON.stringify(dataObject);

Validating the DOJO form programatically from Java Script

Validating the DOJO form programatically from Java Script

Sometimes we may need to validate the dojo form programatically from java script.

<form id="createForm" data-dojo-type="dijit.form.Form" data-dojo-attach-point="form"> .......</form>

The below line of code will help us to validate the form from java script

var formResult=dijit.byId('createForm').validate();

The validation result will be true if the validation of all the filed is success else the value will be false.

Getting the selected rows from DOJO Enhanced Grid

Getting the selected rows from DOJO Enhanced Grid :

The below line of code will help us to get the selected rows of the  Enhanced grid

dijit.byId(gridId).selection.getSelected();

Getting the model value of the selected rows.

var selectedRows=dijit.byId(gridId).selection.getSelected();

for(int i=0;i<selectedRows.length;i++)
{
   selectedRows[i].empName;
}