keys() method return the keys of the properties associated with this element.
Example
Set<String> propertyKeys = janusGraphEdge.keys();
for (String key : propertyKeys) {
System.out.println(key + " --> " + janusGraphEdge.property(key).value());
}
GetAllEdgeProperties.java
package com.sample.app.edges;
import java.util.Set;
import org.janusgraph.core.JanusGraph;
import org.janusgraph.core.JanusGraphEdge;
import org.janusgraph.core.JanusGraphFactory;
import org.janusgraph.core.JanusGraphVertex;
public class GetAllEdgeProperties {
public static void main(String args[]) {
try (JanusGraph janusGraph = JanusGraphFactory.open("/Users/Shared/janus.properties")) {
// Create a person vertex
JanusGraphVertex krishnaVertex = janusGraph.addVertex("person");
krishnaVertex.property("name", "Krishna");
krishnaVertex.property("age", 31);
krishnaVertex.property("gender", 'M');
// Create a person vertex
JanusGraphVertex ramVertex = janusGraph.addVertex("person");
ramVertex.property("name", "Ram");
ramVertex.property("age", 34);
ramVertex.property("gender", 'M');
JanusGraphEdge janusGraphEdge = ramVertex.addEdge("knows", krishnaVertex, "colleague", "N");
janusGraphEdge.property("since", 2017);
janusGraph.tx().commit();
System.out.println("Edge properties:");
Set<String> propertyKeys = janusGraphEdge.keys();
for (String key : propertyKeys) {
System.out.println("\t" + key + " --> " + janusGraphEdge.property(key).value());
}
} finally {
System.out.println("\nDone!!!");
}
}
}
Output
Edge properties: colleague --> N since --> 2017 Done!!!
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