我试图通过修改Rexster中的Rexster.xml文件来配置Rexster以使用Titan。但当我运行时
http ://localhost:8182/graphs/mygraph
在我的浏览器中,我收到一条消息,上面写着:
{"message":"未能找到Graph[mygraph]"}。
这是我修改过的rexster.xml文件的一部分:
<graph>
<graph-name>mygraph</graph-name>
<graph-type>com.thinkaurelius.titan.tinkerpop.rexster.TitanGraphConfiguration</graph-type>
<graph-location>C:/titan-server-jre6-0.4.4/bin/mygraph</graph-location>
<graph-read-only>false</graph-read-only>
<properties>
<storage.backend>local</storage.backend>
<buffer-size>100</buffer-size>
</properties>
<extensions>
<allows>
<allow>tp:gremlin</allow>
</allows>
</extensions>
</graph>
我已经在config/ext/titan下将Titans lib文件夹中的所有jar文件添加到Rexster中,并使用gremlin shell I titan:在titan中创建了一个图
g = TitanFactory.open('mygraph');
g.createKeyIndex('name', Vertex.class);
v = g.addVertex(null);
v.setProperty('name','x');
v.setProperty('type','person');
v.setProperty('age',20);
v1 = g.addVertex(null);
v1.setProperty('name','y');
v1.setProperty('type','person');
v1.setProperty('age',22);
e = g.addEdge(null, v, v1, 'knows');
e1 = g.addEdge(null, v1, v, 'knows');
g.shutdown();
我错过了什么?
[更新]:
我把来自Titan的jar文件放在了rexster的错误目录中,现在放在了rexster的正确位置。但当我现在运行rexster服务器时,我会得到以下输出:
[INFO] Application - .:Welcome to Rexster:.
[INFO] RexsterProperties - Using [C:rexster-server-2.5.0configrexster.xml] as
configuration source.
[INFO] Application - Rexster is watching [C:rexster-server-2.5.0configrexster
.xml] for change.
Exception in thread "main" java.lang.AbstractMethodError: com.thinkaurelius.tita
n.tinkerpop.rexster.TitanGraphConfiguration.configureGraphInstance(Lcom/tinkerpo
p/rexster/config/GraphConfigurationContext;)Lcom/tinkerpop/blueprints/Graph;
at com.tinkerpop.rexster.config.GraphConfigurationContainer.getGraphFrom
Configuration(GraphConfigurationContainer.java:124)
at com.tinkerpop.rexster.config.GraphConfigurationContainer.<init>(Graph
ConfigurationContainer.java:54)
at com.tinkerpop.rexster.server.XmlRexsterApplication.reconfigure(XmlRex
sterApplication.java:99)
at com.tinkerpop.rexster.server.XmlRexsterApplication.<init>(XmlRexsterA
pplication.java:47)
at com.tinkerpop.rexster.Application.<init>(Application.java:97)
at com.tinkerpop.rexster.Application.main(Application.java:189)
我该如何解决此问题?
在我使用2.5.0版本之前,通过更改rexster服务器的版本解决了问题。我现在使用的是Titan的2.4.0版本和0.4.4版本。