TitanBulkLoader.java

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package org.apache.tinkerpop.gremlin.process.computer.bulkloading;

import org.apache.tinkerpop.gremlin.process.computer.bulkloading.IncrementalBulkLoader;
import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversalSource;
import org.apache.tinkerpop.gremlin.structure.Graph;
import org.apache.tinkerpop.gremlin.structure.Vertex;
import org.apache.tinkerpop.gremlin.structure.VertexProperty;
import org.apache.tinkerpop.gremlin.structure.Property;

import java.lang.String;

/**                                                                                                                                                                                                                                                                        
 * @author Daniel Kuppitz (http://gremlin.guru)                                                                                                                                                                                                                        
 */
public class TitanBulkLoader extends IncrementalBulkLoader {

    @Override
    public VertexProperty getOrCreateVertexProperty(final VertexProperty<?> property, final Vertex vertex, final Graph graph, final GraphTraversalSource g) {
        if (property.key().contains(":")) {
            final String[] parts = property.key().split(":");
            final String cardinality = parts[0];
            final String propertyKey = parts[1];
            if (cardinality.equals("set")) {
                final VertexProperty<?> vp = vertex.property(VertexProperty.Cardinality.set, propertyKey, property.value());
                property.properties().forEachRemaining(metaProperty -> {
                        vp.property(metaProperty.key(), metaProperty.value());
                    });
                return vp;
            } else if (cardinality.equals("list")) {
                final VertexProperty<?> vp = vertex.property(VertexProperty.Cardinality.list, propertyKey, property.value());
                property.properties().forEachRemaining(metaProperty -> {
                        vp.property(metaProperty.key(), metaProperty.value());
                    });
                return vp;
            }
        }
        return super.getOrCreateVertexProperty(property, vertex, graph, g);
    }
}