相关疑难解决方法(0)

我有一个LocationIndex在solr中命名的索引,其字段如下:

<fields>
    <field name="solr_id" type="string" stored="true" required="true" indexed="true"/>
    <field name="solr_ver" type="string" stored="true" required="true" indexed="true" default="0000"/>
    // and some more fields
</fields>
<uniqueKey>solr_id</uniqueKey>

但现在我想改变架构,这样独特的密钥必须是复合台现有本领域solr_id和solr_ver......东西如下:

<fields>
    <field name="solr_id" type="string" stored="true" required="true" indexed="true"/>
    <field name="solr_ver" type="string" stored="true" required="true" indexed="true" default="0000"/>
    <field name="composite-id" type="string" stored="true" required="true" indexed="true"/>
    // and some more fields
</fields>
<uniqueKey>solr_ver-solr_id</uniqueKey>

搜索后我发现可以通过在schema中添加以下内容:(ref:Solr Composite来自模式中现有字段的唯一键)

<updateRequestProcessorChain name="composite-id">
  <processor class="solr.CloneFieldUpdateProcessorFactory">
    <str name="source">docid_s</str>
    <str name="source">userid_s</str>
    <str name="dest">id</str>
  </processor>
  <processor class="solr.ConcatFieldUpdateProcessorFactory">
    <str name="fieldName">id</str>
    <str name="delimiter">--</str>
  </processor>
  <processor class="solr.LogUpdateProcessorFactory" …