Function _ValidateInlinedProperties

src/ast/ast_validations.c:714–745

Validate the property maps used in node/edge patterns in MATCH, and CREATE clauses

// Validate the property maps used in node/edge patterns in MATCH, and CREATE clauses
static AST_Validation _ValidateInlinedProperties
(
	const cypher_astnode_t *props  // ast-node representing the map
) {
	if(props == NULL) {
		return AST_VALID;
	}

	// Emit an error if the properties are not presented as a map, as in:
	// MATCH (p {invalid_property_construction}) RETURN p
	if(cypher_astnode_type(props) != CYPHER_AST_MAP) {
		ErrorCtx_SetError("Encountered unhandled type in inlined properties.");
		return AST_INVALID;
	}

	// traverse map entries
	uint prop_count = cypher_ast_map_nentries(props);
	for(uint i = 0; i < prop_count; i++) {
		const cypher_astnode_t *prop_val = cypher_ast_map_get_value(props, i);
		const cypher_astnode_t **patterns = AST_GetTypedNodes(prop_val, CYPHER_AST_PATTERN_PATH);
		uint patterns_count = array_len(patterns);
		array_free(patterns);
		if(patterns_count > 0) {
			// Encountered query of the form:
			// MATCH (a {prop: ()-[]->()}) RETURN a
			ErrorCtx_SetError("Encountered unhandled type in inlined properties.");
			return AST_INVALID;
		}
	}

	return AST_VALID;
}

// validate a relation-pattern
static VISITOR_STRATEGY _Validate_rel_pattern