arcgis-knowledge-graphs

ArcGIS Knowledge Graphs

Use this skill for knowledge graphs, graph queries (openCypher), link chart visualization, and entity-relationship management.

Import Patterns

ESM (npm)

// Knowledge graph service
import * as knowledgeGraphService from "@arcgis/core/rest/knowledgeGraphService.js";

// Layers
import KnowledgeGraphLayer from "@arcgis/core/layers/KnowledgeGraphLayer.js";
import LinkChartLayer from "@arcgis/core/layers/LinkChartLayer.js";

// Views and charts
import WebLinkChart from "@arcgis/core/WebLinkChart.js";
import LinkChartView from "@arcgis/core/views/LinkChartView.js";

// Layout settings
import OrganicLayoutSettings from "@arcgis/core/linkChart/OrganicLayoutSettings.js";
import ChronologicalLayoutSettings from "@arcgis/core/linkChart/ChronologicalLayoutSettings.js";
import LinkChartLayoutSwitcher from "@arcgis/core/linkChart/LinkChartLayoutSwitcher.js";

CDN (dynamic import)

const knowledgeGraphService = await $arcgis.import(
  "@arcgis/core/rest/knowledgeGraphService.js",
);
const KnowledgeGraphLayer = await $arcgis.import(
  "@arcgis/core/layers/KnowledgeGraphLayer.js",
);
const WebLinkChart = await $arcgis.import("@arcgis/core/WebLinkChart.js");
const LinkChartView = await $arcgis.import(
  "@arcgis/core/views/LinkChartView.js",
);

Knowledge Graph Service

Fetch Knowledge Graph

const url =
  "https://your-server/server/rest/services/Hosted/YourKG/KnowledgeGraphServer";
const knowledgeGraph = await knowledgeGraphService.fetchKnowledgeGraph(url);

console.log("Graph name:", knowledgeGraph.name);
console.log("Entity types:", knowledgeGraph.dataModel.entityTypes);
console.log("Relationship types:", knowledgeGraph.dataModel.relationshipTypes);

Service Functions

Function	Description
fetchKnowledgeGraph(url)	Fetch knowledge graph metadata and data model
executeQuery(kg, params)	Execute openCypher query, return all results
executeQueryStreaming(kg, params)	Stream large query results
executeSearch(kg, params)	Full-text search across entities
executeApplyEdits(kg, params)	Add, update, or delete entities and relationships