1. Graph Developer's Guide for Property Graph
  2. Graph Server (PGX) Advanced User Guide
  3. PGX Programming Guides
  4. Graph Mutation and Subgraphs
  5. Advanced Multi-Edge Handling
  6. Merging

26.5.5.2 Merging

This strategy can be used to merge the properties of multi-edges. The graph server (PGX) allows the user to define a MergingFunction for every property. Currently, PGX supports the following functions:

  • MergingFunction.MIN
  • MergingFunction.MAX
  • MergingFunction.SUM

    Note:

    SUM is only defined on numeric properties.

The following figure shows how the graph server (PGX) merges the different edge properties and labels. It takes the minimal cost, the sum of distances and the maximal edge label.

Figure 26-2 Merging Strategy

Description of Figure 26-2 follows
Description of "Figure 26-2 Merging Strategy"

Parent topic: Advanced Multi-Edge Handling