我正在尝试从.graphml文件创建架构，并使用Cassandra作为后端存储。尝试将数据加载到为附件.graphml文件创建的架构中时，出现以下问题。模式定义如下。
private static void setAirRouteSchema(JanusGraphManagement mgmt, JanusGraph graph) throws IOException {
// System.out.println("Inside setAirRouteSchema "+mgmt);
// Define edge labels and usage
mgmt = graph.openManagement();
mgmt.makeEdgeLabel("Frederick Douglass Boulevard").multiplicity(MULTI).make();
mgmt.makeEdgeLabel("West Street").multiplicity(MULTI).make();
mgmt.makeEdgeLabel("North Moore Street").multiplicity(MULTI).make();
mgmt.makeEdgeLabel("Nagle Avenue").multiplicity(MULTI).make();
mgmt.makeEdgeLabel("Broadway").multiplicity(MULTI).make();
mgmt.makeEdgeLabel("Rivington Street").multiplicity(MULTI).make();
mgmt.makeEdgeLabel("West 144th Street").multiplicity(MULTI).make();
mgmt.makeEdgeLabel("[u'River Terrace', u'Vesey Place']").multiplicity(MULTI).make();
mgmt.makeEdgeLabel("Avenue C").multiplicity(MULTI).make();
mgmt.makeEdgeLabel("Division Street").multiplicity(MULTI).make();
mgmt.makeEdgeLabel("Eldridge Street").multiplicity(MULTI).make();
mgmt.makeEdgeLabel("East 79th Street").multiplicity(MULTI).make();
mgmt.makeEdgeLabel("Madison Avenue").multiplicity(MULTI).make();
mgmt.makeEdgeLabel("East 27th Street").multiplicity(MULTI).make();
mgmt.makeEdgeLabel("Hester Street").multiplicity(MULTI).make();
mgmt.makeEdgeLabel("East 81st Street").multiplicity(MULTI).make();
mgmt.commit();
// Define vertex labels
mgmt = graph.openManagement();
mgmt.makeVertexLabel("traffic_signals").make();
mgmt.commit();
// Define vertex property keys
mgmt = graph.openManagement();
mgmt.makePropertyKey("ref").dataType(String.class).cardinality(Cardinality.SINGLE).make();
mgmt.makePropertyKey("highway").dataType(String.class).cardinality(Cardinality.SINGLE).make();
mgmt.makePropertyKey("osmid").dataType(String.class).cardinality(Cardinality.SINGLE).make();
mgmt.makePropertyKey("x").dataType(String.class).cardinality(Cardinality.SINGLE).make();
mgmt.makePropertyKey("y").dataType(String.class).cardinality(Cardinality.SINGLE).make();
mgmt.commit();
// Define edge property keys
mgmt = graph.openManagement();
mgmt.makePropertyKey("service").dataType(Integer.class).cardinality(Cardinality.SINGLE).make();
mgmt.makePropertyKey("access").dataType(Integer.class).cardinality(Cardinality.SINGLE).make();
mgmt.makePropertyKey("width").dataType(Integer.class).cardinality(Cardinality.SINGLE).make();
mgmt.makePropertyKey("tunnel").dataType(Integer.class).cardinality(Cardinality.SINGLE).make();
mgmt.makePropertyKey("bridge").dataType(Integer.class).cardinality(Cardinality.SINGLE).make();
// mgmt.makePropertyKey("ref").dataType(Integer.class).cardinality(Cardinality.SINGLE).make();
mgmt.makePropertyKey("geometry").dataType(Integer.class).cardinality(Cardinality.SINGLE).make();
mgmt.makePropertyKey("maxspeed").dataType(Integer.class).cardinality(Cardinality.SINGLE).make();
mgmt.makePropertyKey("lanes").dataType(Integer.class).cardinality(Cardinality.SINGLE).make();
// mgmt.makePropertyKey("key").dataType(Integer.class).cardinality(Cardinality.SINGLE).make();
mgmt.makePropertyKey("oneway").dataType(Integer.class).cardinality(Cardinality.SINGLE).make();
// mgmt.makePropertyKey("highway").dataType(Integer.class).cardinality(Cardinality.SINGLE).make();
// mgmt.makePropertyKey("osmid").dataType(Integer.class).cardinality(Cardinality.SINGLE).make();
mgmt.makePropertyKey("length").dataType(Integer.class).cardinality(Cardinality.SINGLE).make();
mgmt.makePropertyKey("name").dataType(Integer.class).cardinality(Cardinality.SINGLE).make();
mgmt.commit();
}
GraphMl file loaded from here : https://www.kaggle.com/crailtap/street-network-of-new-york-in-graphml
Error :
Exception in thread "main" java.lang.IllegalArgumentException: Name cannot be in protected namespace: edge
at org.janusgraph.graphdb.types.system.SystemTypeManager.throwIfSystemName(SystemTypeManager.java:72)
at org.janusgraph.graphdb.types.StandardRelationTypeMaker.name(StandardRelationTypeMaker.java:181)
at org.janusgraph.graphdb.types.StandardRelationTypeMaker.<init>(StandardRelationTypeMaker.java:53)
Also Schema is being created but data is not getting entered. Printing the schema created:
------------------------------------------------------------------------------------------------
Vertex Label Name | Partitioned | Static |
---------------------------------------------------------------------------------------------------
traffic_signals | false | false |
---------------------------------------------------------------------------------------------------
Edge Label Name | Directed | Unidirected | Multiplicity |
---------------------------------------------------------------------------------------------------
East 81st Street | true | false | MULTI |
Frederick Douglass Boulevard | true | false | MULTI |
West Street | true | false | MULTI |
North Moore Street | true | false | MULTI |
Nagle Avenue | true | false | MULTI |
Broadway | true | false | MULTI |
Rivington Street | true | false | MULTI |
West 144th Street | true | false | MULTI |
[u'River Terrace', u'Vesey Place'] | true | false | MULTI |
Avenue C | true | false | MULTI |
Division Street | true | false | MULTI |
Eldridge Street | true | false | MULTI |
East 79th Street | true | false | MULTI |
Madison Avenue | true | false | MULTI |
East 27th Street | true | false | MULTI |
Hester Street | true | false | MULTI |
---------------------------------------------------------------------------------------------------
Property Key Name | Cardinality | Data Type |
---------------------------------------------------------------------------------------------------
ref | SINGLE | class java.lang.String |
highway | SINGLE | class java.lang.String |
osmid | SINGLE | class java.lang.String |
x | SINGLE | class java.lang.String |
y | SINGLE | class java.lang.String |
service | SINGLE | class java.lang.Integer |
access | SINGLE | class java.lang.Integer |
width | SINGLE | class java.lang.Integer |
tunnel | SINGLE | class java.lang.Integer |
bridge | SINGLE | class java.lang.Integer |
geometry | SINGLE | class java.lang.Integer |
maxspeed | SINGLE | class java.lang.Integer |
lanes | SINGLE | class java.lang.Integer |
oneway | SINGLE | class java.lang.Integer |
length | SINGLE | class java.lang.Integer |
name | SINGLE | class java.lang.Integer |
---------------------------------------------------------------------------------------------------
Vertex Index Name | Type | Unique | Backing | Key: Status |
---------------------------------------------------------------------------------------------------
---------------------------------------------------------------------------------------------------
Edge Index (VCI) Name | Type | Unique | Backing | Key: Status |
----------------------------------
相关指数|类型方向|排序键|订购|状态|
答案 0 :(得分：2)
我不确定这是否是问题所在，但GraphML不包含TinkerPop -csplit所期望的预期边缘和顶点标签（分别为GraphMLReader和labelE）。您可以调整数据，也可以配置labelV以在通过GraphMLReader和GraphMLReader.Builder.edgeLabelKey()指定的数据中使用属性键。您可以在javadoc中看到这些配置和其他配置。
我认为您想做类似的事情：
vertexLabelKey()请注意，如果您使用的是TinkerPop的较新版本，则可以通过以下方式使用Gremlin：
GraphMLReader reader = GraphMLReader.build().edgeLabelKey(<whatever your label field is>).create();
InputStream input = FileInputStream(<path to graphml file>);
reader.readGraph(input, graph);