Github user dkuppitz commented on a diff in the pull request:
https://github.com/apache/incubator-tinkerpop/pull/323#discussion_r65209483
--- Diff:
gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/process/computer/bulkdumping/BulkExportVertexProgram.java
---
@@ -0,0 +1,189 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.tinkerpop.gremlin.process.computer.bulkdumping;
+
+import org.apache.commons.configuration.BaseConfiguration;
+import org.apache.commons.configuration.Configuration;
+import org.apache.commons.configuration.ConfigurationUtils;
+import org.apache.tinkerpop.gremlin.process.computer.GraphComputer;
+import org.apache.tinkerpop.gremlin.process.computer.Memory;
+import org.apache.tinkerpop.gremlin.process.computer.MessageScope;
+import org.apache.tinkerpop.gremlin.process.computer.Messenger;
+import org.apache.tinkerpop.gremlin.process.computer.VertexComputeKey;
+import org.apache.tinkerpop.gremlin.process.computer.VertexProgram;
+import
org.apache.tinkerpop.gremlin.process.computer.traversal.TraversalVertexProgram;
+import
org.apache.tinkerpop.gremlin.process.computer.util.AbstractVertexProgramBuilder;
+import org.apache.tinkerpop.gremlin.process.traversal.Path;
+import org.apache.tinkerpop.gremlin.process.traversal.Traverser;
+import
org.apache.tinkerpop.gremlin.process.traversal.traverser.util.TraverserSet;
+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.util.StringFactory;
+import org.javatuples.Tuple;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+/**
+ * @author Daniel Kuppitz (http://gremlin.guru)
+ */
+public class BulkExportVertexProgram implements VertexProgram<Tuple> {
+
+ public static final String BULK_EXPORT_VERTEX_PROGRAM_CFG_PREFIX =
"gremlin.bulkExportVertexProgram";
+ public static final String BULK_EXPORT_PROPERTIES = String.join(".",
BULK_EXPORT_VERTEX_PROGRAM_CFG_PREFIX, "properties");
+
+ private Configuration configuration;
+ private Map<String, String> properties;
+ private List<String> sortedProperties;
+ private Set<VertexComputeKey> vertexComputeKeys;
+
+ private BulkExportVertexProgram() {
+ }
+
+ @Override
+ public void loadState(final Graph graph, final Configuration config) {
+ configuration = new BaseConfiguration();
+ if (config != null) {
+ ConfigurationUtils.copy(config, configuration);
+ }
+ properties = new HashMap<>();
+ sortedProperties = new ArrayList<>();
+ for (final String tuple :
configuration.getString(BULK_EXPORT_PROPERTIES, "").split("\1")) {
+ final String[] parts = tuple.split("\2", -1);
+ properties.put(parts[0], parts[1]);
+ sortedProperties.add(parts[0]);
+ }
+ vertexComputeKeys =
Collections.singleton(VertexComputeKey.of(BULK_EXPORT_PROPERTIES, false));
+ }
+
+ @Override
+ public void storeState(final Configuration config) {
+ VertexProgram.super.storeState(config);
+ if (configuration != null) {
+ ConfigurationUtils.copy(configuration, config);
+ }
+ }
+
+ @Override
+ public void setup(final Memory memory) {
+ }
+
+ @Override
+ public void execute(final Vertex sourceVertex, final Messenger<Tuple>
messenger, final Memory memory) {
--- End diff --
Copy & paste. I've already changed it to `Object`.
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