mysql - Hibernate mapping doesn't allow null timestamp -



mysql - Hibernate mapping doesn't allow null timestamp -

i developing web based application using spring-hibernate combination mysql database. have observed 1 problem hibernate mapping doesn't allow me set null, when type timestamp. here code snippet improve understanding

here agenda - want allow user come in null value endtime, not sttime.

schedule.htm.xml

<id name="id" type="long" column="test_run_schedule_id" > <generator class="increment" /> </id> <property name="testname" type="java.lang.string" column="test_run_name" not-null="true" length="45" /> <property name="operation" type="java.lang.string" column="operation_included" not-null="true" length="500" /> <property name="sttime" type="java.util.date" column="start_time" not-null="true" length="19" /> <property name="endtime" type="java.util.date" column="end_time" not-null="false" length="19" />

when looked mysql database, showing me columns start_time [timestamp, notnull], end_time [timestamp, notnull] instead of end_time[timestamp, null].

so when insert value, end_time taken current_timestamp default.

how create nullable end_time column?

mysql database hibernate hbm

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