hugegraph-mysql/src/main/java/org/apache/hugegraph/backend/store/mysql/MysqlTables.java [425:438]:
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        private MysqlBackendEntry wrapByVertex(MysqlBackendEntry edge) {
            assert edge.type().isEdge();
            String ownerVertex = edge.column(HugeKeys.OWNER_VERTEX);
            E.checkState(ownerVertex != null, "Invalid backend entry");
            Id vertexId = IdGenerator.of(ownerVertex);
            MysqlBackendEntry vertex = new MysqlBackendEntry(HugeType.VERTEX,
                                                             vertexId);

            vertex.column(HugeKeys.ID, ownerVertex);
            vertex.column(HugeKeys.PROPERTIES, "");

            vertex.subRow(edge.row());
            return vertex;
        }
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hugegraph-palo/src/main/java/org/apache/hugegraph/backend/store/palo/PaloTables.java [293:306]:
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        private MysqlBackendEntry wrapByVertex(MysqlBackendEntry edge) {
            assert edge.type().isEdge();
            String ownerVertex = edge.column(HugeKeys.OWNER_VERTEX);
            E.checkState(ownerVertex != null, "Invalid backend entry");
            Id vertexId = IdGenerator.of(ownerVertex);
            MysqlBackendEntry vertex = new MysqlBackendEntry(HugeType.VERTEX,
                                                             vertexId);

            vertex.column(HugeKeys.ID, ownerVertex);
            vertex.column(HugeKeys.PROPERTIES, "");

            vertex.subRow(edge.row());
            return vertex;
        }
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