问题描述
在 java.util.Date 属性中查询关系时，应该使用什么语法？我尝试只使用一个查询（这只是一个例子来显示我想要做的，所以请不要注意变量名称）：
When querying for relationships on a java.util.Date property, what syntax should I use? I tried just using a query like (this is just an example to show what I'm trying to do, so please don't pay attention to variable names there):
@Query("start n1=node({0}) match n1-[r:TYPE]->n2 where r.dateCreated>={1} return r")
Page<Relationship> findAll(Node node, long date, Pageable pager);
但它会引发以下错误：
Caused by: Don't know how to compare that. Left: 1339845862883; Right: 1339827156836
at org.neo4j.cypher.internal.Comparer$class.compareValuesOfDifferentTypes(Comparer.scala:45)
at org.neo4j.cypher.internal.Comparer$class.compare(Comparer.scala:67)
at org.neo4j.cypher.commands.ComparablePredicate.compare(ComparablePredicate.scala:30)
at org.neo4j.cypher.commands.ComparablePredicate.isMatch(ComparablePredicate.scala:41)
at org.neo4j.cypher.internal.pipes.matching.PatternMatcher$$anonfun$isMatchSoFar$1.apply(PatternMatcher.scala:148)
at org.neo4j.cypher.internal.pipes.matching.PatternMatcher$$anonfun$isMatchSoFar$1.apply(PatternMatcher.scala:148)
我也尝试通过传递日期，但它只是抛出相同的错误，但试图比较一个长和一个日期。
I also tried by passing a Date but it just throws the same error but trying to compare a Long and a Date.
我正在使用spring-data-neo4j版本2.0.1.RELEASE
I am using spring-data-neo4j version 2.0.1.RELEASE
推荐答案
所以date属性的long值存储在图形中的一个字符串（在较新版本的SDN中，你可以定义一个@Graph属性（targetType = long.class）在日期字段。
So the date property's long value is stored as a string in the graph (in newer versions of SDN you can define a @GraphProperty(targetType=long.class) on date fields.
因此，如果将参数值传递为 String.valueOf（longValue ）
So comparison will work if you pass in the parameter value as String.valueOf(longValue)
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