meta-log-db/dist/rdf/sparql-executor.d.ts

Native database package for Meta-Log (ProLog, DataLog, R5RS)

import { SparqlQuery } from './sparql-parser.js';
import { RdfTriple } from '../types/index.js';
/**
 * Enhanced SPARQL Query Executor
 * Executes parsed SPARQL queries with full feature support
 */
export declare class SparqlExecutor {
    private triples;
    constructor(triples: RdfTriple[]);
    /**
     * Execute SPARQL query
     */
    execute(query: SparqlQuery): Promise<any>;
    /**
     * Execute triple patterns
     */
    private executePatterns;
    /**
     * Match a pattern against triples with existing bindings
     */
    private matchPattern;
    /**
     * Resolve variable or literal value
     */
    private resolveValue;
    /**
     * Query triples by pattern
     */
    private queryTriples;
    /**
     * Apply OPTIONAL patterns
     */
    private applyOptional;
    /**
     * Apply FILTER expressions
     */
    private applyFilters;
    /**
     * Evaluate a filter expression
     */
    private evaluateFilter;
    /**
     * Apply DISTINCT
     */
    private applyDistinct;
    /**
     * Apply ORDER BY
     */
    private applyOrderBy;
    /**
     * Project variables (SELECT clause)
     */
    private projectVariables;
    /**
     * Format binding for output
     */
    private formatBinding;
    /**
     * Infer RDF type from value
     */
    private inferType;
}
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