044_Schedule Job 间隔时间自动执行

需求：系统上的标准功能是能够设置间隔一天的执行，或者是写完代码着急测试我们写个5分钟后执行的；

但是遇到要求没间隔一小时或者十分钟执行，该怎么处理呢？

global class **_RetrieveInquiryBatchtest implements Database.Batchable<sObject>, Database.AllowsCallouts, Database.Stateful, Schedulable {

String query = 'SELECT Id, Inquiry_Type__c, Status__c, Interaction_Number__c, Interaction_Id__c FROM **_Inquirys__c limit 1';
private **_SOA_Settings__c SOASettings = **_SOA_Settings__c.getOrgDefaults();
private List<**_Inquiry.Interaction> interactions;

public **_RetrieveInquiryBatchtest() {

}

public static void runBatch() {
**_SOA_Settings__c SOASettings = **_SOA_Settings__c.getOrgDefaults();
**_RetrieveInquiryBatchtest retrieveBatch = new **_RetrieveInquiryBatchtest();
Id jobId = Database.executeBatch(retrieveBatch, 1);
//Id jobId = Database.executeBatch(retrieveBatch, (Integer)SOASettings.Get_MIR_Statuses_Batch_Limit__c);
}

global void execute(SchedulableContext scMain) {
**_RetrieveInquiryBatchtest retrieveBatch = new **_RetrieveInquiryBatchtest();
Id jobId = Database.executeBatch(retrieveBatch, (Integer)SOASettings.Get_MIR_Statuses_Batch_Limit__c);
}

global Database.QueryLocator start(Database.BatchableContext BC) {
return Database.getQueryLocator(query);
}

global void execute(Database.BatchableContext BC, List<**_Inquirys__c> scope) {

System.debug('----------------------------------');
}

global void finish(Database.BatchableContext BC) {
Datetime now = System.now().addMinutes(1);
String month = string.valueOf(now.month());
String hour = string.valueOf(now.hour());
String day = string.valueOf(now.day());
String minute = string.valueOf(now.minute());
String second = string.valueOf(now.second());
String year = string.valueOf(now.year());
String strSchedule = '0 ' + minute + ' ' + hour + ' ' + day + ' ' + month + ' ?' + ' ' + year;
try {
String strJobName = 'Retrieve GMIP Status ' + System.now().format();
System.schedule(strJobName , strSchedule, new **_RetrieveInquiryBatchtest());
} catch (AsyncException e) {
System.debug(e.getMessage());
// create by ** 2016-06-21 -------- monitor the Batch ----------------------------START
}

List<CronTrigger> cronList = [SELECT Id, State FROM CronTrigger WHERE State = 'DELETED'];
for (CronTrigger cron : cronList){
System.abortJob(cron.Id);
}
// Get the ID of the AsyncApexJob representing this batch job
// from Database.BatchableContext.
// Query the AsyncApexJob object to retrieve the current job's information.

// Send an email to the Apex job's submitter notifying of job completion.
Messaging.SingleEmailMessage mail = new Messaging.SingleEmailMessage();
String[] toAddresses = new String[] {'**@**.com'};
mail.setToAddresses(toAddresses);
mail.setSubject('Apex Sharing Recalculation ');
mail.setPlainTextBody('The batch Apex job processed ' );
Messaging.sendEmail(new Messaging.SingleEmailMessage[] { mail });
}

}
　　主要是在finish方法中设置的一段 时间 执行代码。

CronTrigger delete 是执行一个schedul 剩下在Scheduled Jobs 上的记录，所以我们要删除已经处理ok的Schedule。

代码执行：
**_SOA_Settings__c SOASettings = **_SOA_Settings__c.getOrgDefaults();
**_RetrieveInquiryBatchtest retrieveBatch = new **_RetrieveInquiryBatchtest();
Id jobId = Database.executeBatch(retrieveBatch, 5);