Titan DB 1.0.0 :无法将Json文件导入titan 3.x

Question

当我使用地理定位属性时，如何从JSON文件导入titan ?？

我正在与土卫六DB TP3 -版本3.0.1-孵化

gremlin> Gremlin.version()
==>3.0.1-incubating
gremlin>

并使用GeoShape索引属性(地理定位)，试图导出和导入新的DB。

我的步骤如下：

   //export : 
        tg = TitanFactory.open(‘../conf/titan-db.properties’)
        tg.io(IoCore.graphson()).writeGraph('/var/backups/PRODUCTION_DATA_27_10_16.json');



  //import to new DB:
       tg.io(IoCore.graphson()).readGraph('/var/backups/PRODUCTION_DATA_27_10_16.json'); 

但不幸的是有例外：

gremlin> tg.io(IoCore.graphson()).readGraph('/var/backups/PRODUCTION_DATA_27_10_16.json');
Property value [{type=Point, coordinates=[33.0, 32.0]}] is of type class java.util.LinkedHashMap is not supported
Display stack trace? [yN] y
java.lang.IllegalArgumentException: Property value [{type=Point, coordinates=[33.0, 32.0]}] is of type class java.util.LinkedHashMap is not supported
    at org.apache.tinkerpop.gremlin.structure.Property$Exceptions.dataTypeOfPropertyValueNotSupported(Property.java:159)
    at com.thinkaurelius.titan.graphdb.transaction.StandardTitanTx.verifyAttribute(StandardTitanTx.java:564)
    at com.thinkaurelius.titan.graphdb.transaction.StandardTitanTx.addProperty(StandardTitanTx.java:716)
    at com.thinkaurelius.titan.graphdb.vertices.AbstractVertex.property(AbstractVertex.java:142)
    at com.thinkaurelius.titan.graphdb.vertices.AbstractVertex.property(AbstractVertex.java:23)
    at org.apache.tinkerpop.gremlin.structure.util.Attachable$Method.lambda$createVertex$26(Attachable.java:296)

请有任何解决办法..。。?

Answer 1

看起来您正在运行这个第1183期：Titan1.0.0 GraphSONWriter.writeGraph JsonMappingException，它已经修复了。尝试从源代码构建titan11分支。如果您需要构建它的指导，请查看这个土卫六邮寄名单邮寄中的步骤。

如果您想用序列化修复修补土卫六1.0.0构建，而不升级到titan11，请尝试如下(在此讨论)：

git clone https://github.com/thinkaurelius/titan.git
cd titan
git checkout 1.0.0
git cherry-pick 6dfc816d821a7739398e5cebc1e999d75c866c19
mvn clean install -DskipTests=true -Dgpg.skip=true -Paurelius-release
unzip titan-dist/titan-dist-hadoop-1/target/titan-1.0.0-hadoop1.zip