AbstractPQLQuery.java 文件源码

protected Set<PQLTask> interpretSetOfTasksConstruction(ParseTree tree) {
    ParseTree child = tree.getChild(0);

    if (child instanceof RuleNode) {
        int ruleIndex = ((RuleNode)child).getRuleContext().getRuleIndex();

        switch (ruleIndex) {
            case PQLParser.RULE_unaryPredicateConstruction:
                return interpretUnaryPredicateConstruction(child);
            case PQLParser.RULE_binaryPredicateConstruction:
                return interpretBinaryPredicateConstruction(child);
        }   
    }

    return new HashSet<PQLTask>();
}