.. index:: single: json_graph_data_protocol .. _json_graph_data_protocol/0:

.. rst-class:: right

protocol

json_graph_data_protocol

Canonical JSON graph data protocol for object-backed graph sources and sinks using atom identifiers.

| Availability: | logtalk_load(json_graph(loader))

| Author: Paulo Moura | Version: 1:0:0 | Date: 2026-07-03

| Compilation flags: | static

| Dependencies: | (none)

| Remarks: | (none)

| Inherited public predicates: | (none)

.. contents:: :local: :backlinks: top

Public predicates

.. index:: graph/2 .. _json_graph_data_protocol/0::graph/2:

graph/2 ^^^^^^^^^^^

Enumerates or stores graph properties for an atom graph identifier.

| Compilation flags: | dynamic

| Template: | graph(GraphId,Properties) | Mode and number of proofs: | graph(?atom,?list) - zero_or_more

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.. index:: node/3 .. _json_graph_data_protocol/0::node/3:

node/3 ^^^^^^^^^^

Enumerates or stores node properties for atom graph and node identifiers.

| Compilation flags: | dynamic

| Template: | node(GraphId,NodeId,Properties) | Mode and number of proofs: | node(?atom,?atom,?list) - zero_or_more

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.. index:: edge/5 .. _json_graph_data_protocol/0::edge/5:

edge/5 ^^^^^^^^^^

Enumerates or stores edge properties for atom graph, edge, source node, and target node identifiers.

| Compilation flags: | dynamic

| Template: | edge(GraphId,EdgeId,Source,Target,Properties) | Mode and number of proofs: | edge(?atom,?atom,?atom,?atom,?list) - zero_or_more

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.. index:: hyperedge/4 .. _json_graph_data_protocol/0::hyperedge/4:

hyperedge/4 ^^^^^^^^^^^^^^^

Enumerates or stores undirected hyperedge properties for atom graph and hyperedge identifiers and a list of atom node identifiers.

| Compilation flags: | dynamic

| Template: | hyperedge(GraphId,HyperedgeId,Nodes,Properties) | Mode and number of proofs: | hyperedge(?atom,?atom,?list(atom),?list) - zero_or_more

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.. index:: hyperedge/5 .. _json_graph_data_protocol/0::hyperedge/5:

hyperedge/5 ^^^^^^^^^^^^^^^

Enumerates or stores directed hyperedge properties for atom graph and hyperedge identifiers and lists of atom source and target node identifiers.

| Compilation flags: | dynamic

| Template: | hyperedge(GraphId,HyperedgeId,Sources,Targets,Properties) | Mode and number of proofs: | hyperedge(?atom,?atom,?list(atom),?list(atom),?list) - zero_or_more

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Protected predicates

(none)

Private predicates

(none)

Operators

(none)