Function _ValidateCreateRelation

src/ast/ast_validations.c:283–298

Validate that the relation alias of an edge is not bound

// Validate that the relation alias of an edge is not bound
static AST_Validation _ValidateCreateRelation
(
	const cypher_astnode_t *entity,  // ast-node
	rax *defined_aliases             // bounded variables
) {
	const cypher_astnode_t *identifier = cypher_ast_rel_pattern_get_identifier(entity);
	if(identifier) {
		const char *alias = cypher_ast_identifier_get_name(identifier);
		if(raxFind(defined_aliases, (unsigned char *)alias, strlen(alias)) != raxNotFound) {
			ErrorCtx_SetError("The bound variable '%s' can't be redeclared in a CREATE clause", alias);
			return AST_INVALID;
		}
	}

	return AST_VALID;
}

// Validate each entity referenced in a single path of a CREATE clause.
static AST_Validation _Validate_CREATE_Entities