quartz-scheduler

Java Excel POI stops after multiple execution by quartz

只谈情不闲聊 提交于 2019-12-01 03:14:28
问题 I'd like to have a couple of insights on this. I have a program that reads and writes from a database to an excel file. It's execution is based on a timer using Quartz api and triggered every tuesday of the week. The problem is, when i tested it by scheduling it to execute the job every hour, the program suddenly stops after a few executions inside the process of writing the excel file. Here is my write to excel code. try { FileInputStream file = new FileInputStream(excelFile);

Migrating from Spring 3 to Spring 4 - org.springframework.scheduling.quartz.CronTriggerBean

本小妞迷上赌 提交于 2019-12-01 02:06:38
I'm trying to migrate from spring 3.0.5 to spring 4.1.X . Spring 3 has Class named as "org.springframework.scheduling.quartz.CronTriggerBean" But Spring 4 doesn't include this class name. [5/28/15 20:10:16:798 EDT] 00000092 ClassPathXmlA W org.springframework.context.support.AbstractApplicationContext __refresh Exception encountered during context initialization - cancelling refresh attempt org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [org.springframework.scheduling.quartz.CronTriggerBean] for bean with name 'beanIdName' defined in class path resource

Quartz Thread Execution Parallel or Sequential?

こ雲淡風輕ζ 提交于 2019-11-30 22:32:50
We have a quartz based scheduler application which runs about 1000 jobs per minute which are evenly distributed across seconds of each minute i.e. about 16-17 jobs per second. Ideally, these 16-17 jobs should fire at same time, however our first statement, which simply logs the time of execution, of execute method of the job is being called very late. e.g. let us assume we have 1000 jobs scheduled per minute from 05:00 to 05:04. So, ideally the job which is scheduled at 05:03:50 should have logged the first statement of the execute method at 05:03:50, however, it is doing it at about 05:06:38.

How to simulate 'No. of occurrences' or 'Repeat Count' with CronTriggers in Java?

主宰稳场 提交于 2019-11-30 22:25:23
I am using the Quartz Scheduler (version 1.8.3 due to project constraints) and I as assigned the task of creating an "MS Outlook-like" scheduler for Jobs specific to my project. Everything seems fine to work fine but I have a really huge problem with CronTriggers (this problem also exists in version 2.1 of Quartz): I am using CronTriggers for recurrence patterns of DAILY, WEEKLY and MONTHLY. In addition to the recurrence pattern, I also provide an option for 'No. of occurrences'. This has become the bane of my life! CronTrigger does not provide an option for 'repeatCount' like SimpleTriggers

Ways to deal with Daylight Savings time with Quartz Cron Trigger

可紊 提交于 2019-11-30 20:13:23
I have a quartz cron trigger that looks like so: <bean id="batchProcessCronTrigger" class="org.springframework.scheduling.quartz.CronTriggerBean"> <property name="jobDetail" ref="batchProcessJobDetail" /> <property name="cronExpression" value="0 30 2 * * ?" /> </bean> How should I solve this, if I have several configurations that happen within the 2-3am period? Is there an accepted best practice? Relevant link: http://www.quartz-scheduler.org/docs/faq.html#FAQ-daylightSavings Basically it says "Deal with it." But my question is how! I solved it using a separate trigger that only fires (an hour

Using Hibernate session with quartz

安稳与你 提交于 2019-11-30 19:49:27
I've a web application which uses framework like Struts and Hibernate. Currently I'm developing a scheduler for this application using Quartz. While coding I realized that the use of Hibernate session is not possible with the threads of Quartz. Anybody have a solution for using hibernate sessions from quartz job class? One approach is to use a HibernateUtil class which builds the SessionFactory in a static initializer and makes it available via a public static getter. Your Quartz job can create a Session as HibernateUtil.getSessionFactory().getCurrentSession() and use it. I know this is an old

Finding Last Fired time using a Cron Expression in Java

做~自己de王妃 提交于 2019-11-30 19:38:06
Is there a way in Java to find the "Last Fired Time" from a Cron Expression. E.g. If now = 25-Apr-2010 10pm, cron expression "0 15 10 ? * *" (quartz) should return me 25-Apr-2010 10:15am Note: 1) I do not care if we use standard cron expressions (like Unix and Quartz) or less popular ones if they can fetch me the correct "Last Fired Time" 2) Also it is not literally "Last Fire time" as the trigger may not have fired, but logically there should be a way of telling when it (would have) fired last. cron-utils is an opensource Java library to parse, validate, migrate crons that supports the

Quartz Thread Execution Parallel or Sequential?

这一生的挚爱 提交于 2019-11-30 18:18:51
问题 We have a quartz based scheduler application which runs about 1000 jobs per minute which are evenly distributed across seconds of each minute i.e. about 16-17 jobs per second. Ideally, these 16-17 jobs should fire at same time, however our first statement, which simply logs the time of execution, of execute method of the job is being called very late. e.g. let us assume we have 1000 jobs scheduled per minute from 05:00 to 05:04. So, ideally the job which is scheduled at 05:03:50 should have

Full Spring integration with Quartz to implement real time notification e-mails

馋奶兔 提交于 2019-11-30 16:45:29
I'm currently developing an application with spring boot that let users to create an appointment. So basically the appointment has a startDateTime and an endDateTime fields + an e-mail. The creation of an appointment adds a new line in the appointment table of a MySql database. What I want to do is to notify the user one hour before the startDateTime defined in the database with an e-mail. I looked for a solution but couldn't find one. I found that jobs (spring batch) can do this, but jobs rely on a frequency check (days, weeks, months) what I'm looking for is a real-time notification. Any

Full Spring integration with Quartz to implement real time notification e-mails

三世轮回 提交于 2019-11-30 16:20:40
问题 I'm currently developing an application with spring boot that let users to create an appointment. So basically the appointment has a startDateTime and an endDateTime fields + an e-mail. The creation of an appointment adds a new line in the appointment table of a MySql database. What I want to do is to notify the user one hour before the startDateTime defined in the database with an e-mail. I looked for a solution but couldn't find one. I found that jobs (spring batch) can do this, but jobs