我有一个Solr的索引的文档:
{
"id":"/content/dam/enron-cmi/fragments/headline-header/industry/industry commitment section header",
"path":["/content/dam/enron-cmi/fragments/headline-header/industry/industry commitment section header"],
"title":["Industry Commitment Section Header"],
"previewText":["Industry commitment"],
"publishedDate_dt":"2018-09-08T00:00:00Z",
"lastModifiedDate_dt":"2018-09-08T00:00:00Z",
"_version_":1624706590447763456},
{
"id":"/content/dam/enron-cmi/fragments/industry-overview/financial-services-overview---long",
"path":["/content/dam/enron-cmi/fragments/industry-overview/financial-services-overview---long"],
"title":["Financial Services Overview - Long"],
"previewText":["Adaptation to the disruptive innovations that are driving necessary transformation and reform has me ..."],
"publishedDate_dt":"2018-09-08T00:00:00Z",
"lastModifiedDate_dt":"2018-09-08T00:00:00Z",
"_version_":1624706590447763456}
}
我SolrInputDocument代码如下所示(指数只有当它转化为具体的日期之后的有效日期):
if (tempObject.has("expirationDate") && tempObject.get("expirationDate") != null
&& CommonUtils.isDateValid(tempObject.get("expirationDate").getAsString())) {
nestedDoc.addField("expirationDate_dt",
CommonUtils.toUtcDate(tempObject.get("expirationDate").getAsString()));
}
if (tempObject.has("publishedDate") && tempObject.get("publishedDate") != null
&& CommonUtils.isDateValid(tempObject.get("publishedDate").getAsString())) {
nestedDoc.addField("publishedDate_dt",
CommonUtils.toUtcDate(tempObject.get("publishedDate").getAsString()));
}
if (tempObject.has("lastModifiedDate") && tempObject.get("lastModifiedDate") != null
&& CommonUtils.isDateValid(tempObject.get("lastModifiedDate").getAsString())) {
nestedDoc.addField("lastModifiedDate_dt",
CommonUtils.toUtcDate(tempObject.get("lastModifiedDate").getAsString()));
}
日期转换UTIL如下:
public static String toUtcDate(String dateStr) {
SimpleDateFormat out = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");
String outDateFormat = StringUtils.EMPTY;
String dateFormat = "MM-dd-yyyy";
try {
outDateFormat = out.format(new SimpleDateFormat(dateFormat).parse(dateStr));
} catch (Exception ignore) {
LOG.info(ignore.getMessage(), null, ignore);
}
return outDateFormat;
}
I指数我的内容后,我想查询例如日期比较:只显示publishedDate_dt> lastModifiedDate_dt我该怎么办呢?对于Solr的这些文件是不是真的清楚。 Solr的版本是7.6。
我可以使用的Solr的Java API做的一样吗?
我曾尝试以下查询:
并且输出是:
“文档”:[{ “publishedDate_dt”: “2018-09-20T00:00:00Z”},{ “publishedDate_dt”: “2018-09-01T00:00:00Z”},{ “publishedDate_dt”:“2018-09 -01T00:00:00Z”},{ “publishedDate_dt”: “2018-09-01T00:00:00Z”},
尝试了这一点:
http://localhost:8983/solr/collection/select?&q=:FL = expirationDate_dt,publishedDate_dt,MS(expirationDate_dt,publishedDate_dt)DEFTYPE = FUNC输出是:
{
"responseHeader": {
"zkConnected": true,
"status": 400,
"QTime": 2,
"params": {
"q": "*:*",
"defType": "func",
"fl": "expirationDate_dt,publishedDate_dt,ms(expirationDate_dt,publishedDate_dt)"
}
},
"error": {
"metadata": [
"error-class",
"org.apache.solr.common.SolrException",
"root-error-class",
"org.apache.solr.search.SyntaxError"
],
"msg": "org.apache.solr.search.SyntaxError: Expected identifier at pos 0 str='*:*'",
"code": 400
}
}
我究竟做错了什么 ?
在这种情况下,你可以使用函数查询。
这里是链接它Function Queries&Available Functions
您可以使用ms
功能:它返回它的参数之间的差异毫秒
语法实例
ms(NOW/DAY)
ms(2000-01-01T00:00:00Z)
ms(mydatefield)
ms(NOW,mydatefield)
ms(mydatefield, 2000-01-01T00:00:00Z)
ms(datefield1, datefield2)