hibernate插入数据库默认值

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!--
    Mapping file autogenerated by MyEclipse Persistence Tools
-->
<hibernate-mapping>
    <class name="bean.JzNote" table="JZ_NOTE" schema="TEST" dynamic-insert="true" dynamic-update="true">
        <id name="noteId" type="java.lang.Long">
            <column name="NOTE_ID" precision="9" scale="0" />
            <generator class="sequence">
            <param name="sequence">SN_JZ_NOTE_ID</param>
            </generator>
        </id>
        <many-to-one name="jzUser" class="bean.JzUser" fetch="select">
            <column name="USER_ID" precision="9" scale="0" not-null="true" />
        </many-to-one>
        <property name="noteTitle" type="java.lang.String">
            <column name="NOTE_TITLE" length="200" not-null="true" />
        </property>
        <property name="noteContent" type="text" length="10000">
            <column name="NOTE_CONTENT" not-null="true" />
        </property>
        <property name="filePath" type="java.lang.String">
            <column name="FILE_PATH" length="200" />
        </property>
        <property name="addDate" type="java.util.Date">
            <column name="ADD_DATE" length="7" not-null="false" />
        </property>
        <property name="modDate" type="java.util.Date">
            <column name="MOD_DATE" length="7" not-null="false" />
        </property>
        <property name="state" type="java.lang.Long">
            <column name="STATE" precision="1" scale="0" not-null="false" />
        </property>
        <set name="jzSubNotes" inverse="true">
            <key>
                <column name="NOTE_ID" precision="9" scale="0" not-null="true" />
            </key>
            <one-to-many class="bean.JzSubNote" />
        </set>
    </class>
</hibernate-mapping>