Batch Execution Page

Batch processor controller

/**
 * P2_BatchProcessController
 * @description VF controller class for a VF tab
 * allowing user to select a batch / schedule apex job
 * and execute it immediately
 * @author dancinllama
 * @date 4/17/2012
 */
public class P2_BatchProcessController {
  
  //Member variables
  private Map<String,Schedulable> schedulableClassMap {get;set;}
  public String key {get;set;}
  
  /**
   * @description Default constructor
   */
  public P2_BatchProcessController(){
    batchableClassMap = new Map<String,Database.Batchable<sObject>>();
    batchableClassMap.put('SSN Encryption',new P2_BatchCaseSSNEncryption());
    batchableClassMap.put('Record Cleanup',new P2_BatchRecordCleanup());
  }
  
  /**
   * @description returns list of select options
   * with batchable class description for name and value
   * @return List<SelectOption> list of select options of Batchable classes to execute
   */
  public List<SelectOption> selectOptions{
    get{
      List<SelectOption> selectOptions = new List<SelectOption>();
      for(String key : batchableClassMap.keySet()){
        selectOptions.add(new SelectOption(key,key));	
      }
      return selectOptions;
    }
  }
  
  /**
   * @description Execute action, executes
   * the batchable class manually
   * @return null PageReference
   */
  public PageReference execute(){
    if(key != null){
      //Put whatever your schedule is in cron format... this is 15th min of every hour 
      System.schedule('Job2', '0 15 * * * ?', batchableClassMap.get(key));
      //Database.executeBatch(batchableClassMap.get(key));
    }
    return null;
  }
}

gistfile1.txt

<!--  Called via a VF tab for Administering / Executing Batch jobs -->
<apex:page controller="P2_BatchProcessController">
  <apex:form id="theform">
    <apex:pageBlock >
      <apex:pageBlockSection title="{!$Label.AdminTab_Title}" columns="1">
        <apex:pageBlockSectionItem >
          <apex:outputPanel >
            <apex:outputLabel for="selectList" value="{!$Label.AdminTab_Select}" />
          </apex:outputPanel>
          <apex:outputPanel >
            <apex:selectList value="{!key}" size="1" multiselect="false">
              <apex:selectOptions value="{!selectOptions}" />
            </apex:selectList>&nbsp;
            <apex:commandButton value="{!$Label.AdminTab_Execute}" action="{!execute}" status="estatus" rerender="theform"/>
            <apex:actionStatus id="estatus" startText="{!$Label.AdminTab_Processing}" />
          </apex:outputPanel>
        </apex:pageBlockSectionItem>
      </apex:pageBlockSection>
    </apex:pageBlock>
  </apex:form>
</apex:page>