1.data-config.xml配置增量执行语句

<?xml version="1.0" encoding="UTF-8" ?>

<dataConfig>

    <dataSource name="source_hinew" type="JdbcDataSource" driver="com.mysql.jdbc.Driver" 
      url="jdbc:mysql://localhost:3306/solr_test?serverTimezone=UTC&amp;useUnicode=true&amp;autoReconnect=true&amp;characterEncoding=UTF-8" 
      user="test" password="test"/>
    <document>
    <entity name="member" pk="memid"  >
      query="select distinct * from member" 
      deltaQuery="select memid from member
          where mem_date_updated > '${dataimporter.last_index_time}'"
      deltaImportQuery="select memid from member
          where mem_date_updated > '${dataimporter.last_index_time}'">
        <field column="memid" name="memid" />  
        <field column="name" name="name" />  
        <field column="mem_first_name" name="mem_first_name" />  
        <field column="mem_last_name" name="mem_last_name" />  
        <field column="mem_org_title" name="mem_org_title" />  
        <field column="mem_org_dept" name="mem_org_dept" />  
        <field column="mem_job_func" name="mem_job_func" />  
        <field column="mem_job_level" name="mem_job_level" />  
        <field column="mem_add_city" name="mem_add_city" />  
        <field column="mem_add_state_code" name="mem_add_state_code" />  
        <field column="mem_add_country_code" name="mem_add_country_code" />  
        <field column="mem_date_created" name="mem_date_created" />  
        <field column="mem_email" name="mem_email" />  
        <field column="mem_orgid" name="mem_orgid" />  
        <field column="mem_add_address" name="mem_add_address" />  
  
    </entity>
</document>  
</dataConfig> 

delta-import：通过deltaQuery，查到数据库中未被索引记录的ids（id1,id2...），然后执行deltaImportQuery，如果没用deltaImportQuery，就通过Query去组装deltaImportQuery。对于上面的配置文件，就应该组装成这样的query：select distinct * from member where memid = id1，把这条记录导入索引库里面，然后再导id2。曾以为solr应该组装select .. from .. where .. and memid in (id1, id2)这样的query，可好像它并没这样做。