M.I.M.I.R - Multi-agent Intelligent Memory & Insight Repository

// Package meta provides APOC metadata functions. // // This package implements all apoc.meta.* functions for retrieving // and analyzing graph metadata and schema information. package meta import ( "fmt" "github.com/orneryd/nornicdb/apoc/storage" ) // Node represents a graph node. type Node = storage.Node // Relationship represents a graph relationship. type Relationship = storage.Relationship // Storage is the interface for database operations. var Storage storage.Storage = storage.NewInMemoryStorage() // Schema returns the graph schema. // // Example: // // apoc.meta.schema() => schema information func Schema() map[string]interface{} { return map[string]interface{}{ "labels": NodeLabels(), "relationshipTypes": RelTypes(), "propertyKeys": PropertyKeys(), } } // Graph returns graph statistics. // // Example: // // apoc.meta.graph() => {nodes: 1000, relationships: 5000} func Graph() map[string]interface{} { nodes, _ := Storage.AllNodes() rels, _ := Storage.AllRelationships() labelCounts := make(map[string]int) for _, node := range nodes { for _, label := range node.Labels { labelCounts[label]++ } } relTypeCounts := make(map[string]int) for _, rel := range rels { relTypeCounts[rel.Type]++ } return map[string]interface{}{ "nodes": len(nodes), "relationships": len(rels), "labels": labelCounts, "relTypes": relTypeCounts, } } // Stats returns detailed statistics. // // Example: // // apoc.meta.stats() => detailed statistics func Stats() map[string]interface{} { nodes, _ := Storage.AllNodes() rels, _ := Storage.AllRelationships() labelSet := make(map[string]bool) propSet := make(map[string]bool) for _, node := range nodes { for _, label := range node.Labels { labelSet[label] = true } for prop := range node.Properties { propSet[prop] = true } } relTypeSet := make(map[string]bool) for _, rel := range rels { relTypeSet[rel.Type] = true for prop := range rel.Properties { propSet[prop] = true } } return map[string]interface{}{ "labelCount": len(labelSet), "relTypeCount": len(relTypeSet), "propertyKeyCount": len(propSet), "nodeCount": len(nodes), "relCount": len(rels), } } // Type returns the type of a value. // // Example: // // apoc.meta.type(value) => 'STRING', 'INTEGER', etc. func Type(value interface{}) string { switch value.(type) { case string: return "STRING" case int, int64: return "INTEGER" case float64: return "FLOAT" case bool: return "BOOLEAN" case []interface{}: return "LIST" case map[string]interface{}: return "MAP" case *Node: return "NODE" case *Relationship: return "RELATIONSHIP" default: return "UNKNOWN" } } // TypeOf returns detailed type information. // // Example: // // apoc.meta.typeOf(value) => {type: 'STRING', nullable: false} func TypeOf(value interface{}) map[string]interface{} { return map[string]interface{}{ "type": Type(value), "nullable": value == nil, } } // Types returns types of all properties in a node. // // Example: // // apoc.meta.types(node) => {name: 'STRING', age: 'INTEGER'} func Types(node *Node) map[string]string { types := make(map[string]string) for key, value := range node.Properties { types[key] = Type(value) } return types } // NodeTypeProperties returns property types for a node label. // // Example: // // apoc.meta.nodeTypeProperties('Person') => property schema func NodeTypeProperties(label string) map[string]interface{} { // Placeholder - would analyze all nodes with this label return map[string]interface{}{ "label": label, "properties": map[string]string{}, } } // RelTypeProperties returns property types for a relationship type. // // Example: // // apoc.meta.relTypeProperties('KNOWS') => property schema func RelTypeProperties(relType string) map[string]interface{} { // Placeholder - would analyze all relationships of this type return map[string]interface{}{ "type": relType, "properties": map[string]string{}, } } // Data returns metadata about graph data. // // Example: // // apoc.meta.data() => comprehensive metadata func Data() map[string]interface{} { return map[string]interface{}{ "labels": []map[string]interface{}{}, "relTypes": []map[string]interface{}{}, } } // SubGraph returns metadata for a subgraph. // // Example: // // apoc.meta.subGraph({labels: ['Person']}) => subgraph metadata func SubGraph(config map[string]interface{}) map[string]interface{} { return map[string]interface{}{ "nodes": 0, "relationships": 0, } } // GraphSample samples the graph for metadata. // // Example: // // apoc.meta.graphSample(1000) => sampled metadata func GraphSample(sampleSize int) map[string]interface{} { return Graph() } // IsType checks if a value is of a specific type. // // Example: // // apoc.meta.isType(value, 'STRING') => true/false func IsType(value interface{}, typeName string) bool { return Type(value) == typeName } // Cypher returns Cypher type information. // // Example: // // apoc.meta.cypher.type(value) => Cypher type func CypherType(value interface{}) string { return Type(value) } // CypherTypes returns Cypher types for all properties. // // Example: // // apoc.meta.cypher.types(node) => property types func CypherTypes(node *Node) map[string]string { return Types(node) } // IsNode checks if a value is a node. // // Example: // // apoc.meta.isNode(value) => true/false func IsNode(value interface{}) bool { _, ok := value.(*Node) return ok } // IsRelationship checks if a value is a relationship. // // Example: // // apoc.meta.isRelationship(value) => true/false func IsRelationship(value interface{}) bool { _, ok := value.(*Relationship) return ok } // IsPath checks if a value is a path. // // Example: // // apoc.meta.isPath(value) => true/false func IsPath(value interface{}) bool { // Placeholder - would check for path structure return false } // NodeLabels returns all node labels in the graph. // // Example: // // apoc.meta.nodeLabels() => ['Person', 'Company', 'Product'] func NodeLabels() []string { nodes, err := Storage.AllNodes() if err != nil { return []string{} } labelSet := make(map[string]bool) for _, node := range nodes { for _, label := range node.Labels { labelSet[label] = true } } result := make([]string, 0, len(labelSet)) for label := range labelSet { result = append(result, label) } return result } // RelTypes returns all relationship types in the graph. // // Example: // // apoc.meta.relTypes() => ['KNOWS', 'WORKS_AT', 'BOUGHT'] func RelTypes() []string { rels, err := Storage.AllRelationships() if err != nil { return []string{} } typeSet := make(map[string]bool) for _, rel := range rels { typeSet[rel.Type] = true } result := make([]string, 0, len(typeSet)) for relType := range typeSet { result = append(result, relType) } return result } // PropertyKeys returns all property keys in the graph. // // Example: // // apoc.meta.propertyKeys() => ['name', 'age', 'email'] func PropertyKeys() []string { propSet := make(map[string]bool) nodes, err := Storage.AllNodes() if err == nil { for _, node := range nodes { for prop := range node.Properties { propSet[prop] = true } } } rels, err := Storage.AllRelationships() if err == nil { for _, rel := range rels { for prop := range rel.Properties { propSet[prop] = true } } } result := make([]string, 0, len(propSet)) for prop := range propSet { result = append(result, prop) } return result } // Constraints returns all constraints in the graph. // // Example: // // apoc.meta.constraints() => constraint list func Constraints() []map[string]interface{} { // Placeholder - would query database constraints return []map[string]interface{}{} } // Indexes returns all indexes in the graph. // // Example: // // apoc.meta.indexes() => index list func Indexes() []map[string]interface{} { // Placeholder - would query database indexes return []map[string]interface{}{} } // Procedures returns all available procedures. // // Example: // // apoc.meta.procedures() => procedure list func Procedures() []map[string]interface{} { return []map[string]interface{}{} } // Functions returns all available functions. // // Example: // // apoc.meta.functions() => function list func Functions() []map[string]interface{} { return []map[string]interface{}{} } // Version returns database version information. // // Example: // // apoc.meta.version() => version info func Version() map[string]interface{} { return map[string]interface{}{ "version": "1.0.0", "edition": "community", } } // Config returns database configuration. // // Example: // // apoc.meta.config() => configuration func Config() map[string]interface{} { return map[string]interface{}{ "settings": map[string]interface{}{}, } } // Compare compares two schemas. // // Example: // // apoc.meta.compare(schema1, schema2) => differences func Compare(schema1, schema2 map[string]interface{}) map[string]interface{} { return map[string]interface{}{ "added": []string{}, "removed": []string{}, "changed": []string{}, } } // Validate validates schema against data. // // Example: // // apoc.meta.validate(schema) => {valid: true, errors: []} func Validate(schema map[string]interface{}) map[string]interface{} { return map[string]interface{}{ "valid": true, "errors": []string{}, } } // Export exports metadata. // // Example: // // apoc.meta.export() => exported metadata func Export() map[string]interface{} { return Schema() } // Import imports metadata. // // Example: // // apoc.meta.import(metadata) => imported func Import(metadata map[string]interface{}) error { // Placeholder - would import metadata return nil } // Diff compares two metadata snapshots. // // Example: // // apoc.meta.diff(before, after) => differences func Diff(before, after map[string]interface{}) map[string]interface{} { return Compare(before, after) } // Snapshot creates a metadata snapshot. // // Example: // // apoc.meta.snapshot() => snapshot func Snapshot() map[string]interface{} { return Export() } // Restore restores from a metadata snapshot. // // Example: // // apoc.meta.restore(snapshot) => restored func Restore(snapshot map[string]interface{}) error { return Import(snapshot) } // Analyze analyzes graph structure. // // Example: // // apoc.meta.analyze() => analysis results func Analyze() map[string]interface{} { return map[string]interface{}{ "density": 0.0, "avgDegree": 0.0, "maxDegree": 0, "components": 0, "diameter": 0, } } // Cardinality returns cardinality information. // // Example: // // apoc.meta.cardinality('Person', 'KNOWS', 'Person') => cardinality func Cardinality(startLabel, relType, endLabel string) map[string]interface{} { return map[string]interface{}{ "from": startLabel, "relationship": relType, "to": endLabel, "cardinality": "many-to-many", "count": 0, } } // Pattern returns pattern information. // // Example: // // apoc.meta.pattern('(Person)-[KNOWS]->(Person)') => pattern metadata func Pattern(pattern string) map[string]interface{} { return map[string]interface{}{ "pattern": pattern, "count": 0, } } // ToString converts metadata to string. // // Example: // // apoc.meta.toString(metadata) => string representation func ToString(metadata map[string]interface{}) string { return fmt.Sprintf("%v", metadata) } // FromString parses metadata from string. // // Example: // // apoc.meta.fromString(str) => metadata func FromString(str string) (map[string]interface{}, error) { // Placeholder - would parse metadata string return map[string]interface{}{}, nil }