AbstractPQLQuery.java 文件源码

protected PQLTask interpretTask(ParseTree tree) {
    String label = "";
    double similarity = 1.0;

    for (int i = 0; i < tree.getChildCount(); i++) {
        ParseTree child = tree.getChild(i);

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

               switch (ruleIndex) {
                case PQLParser.RULE_approximate:
                    similarity = labelMngr.getDefaultLabelSimilarityThreshold();
                    break;
                case PQLParser.RULE_label:
                    label = this.interpretLabel(child);
                    break;
                case PQLParser.RULE_similarity:
                    similarity = this.interpretSimilarity(child);
                    break;
               }
           }
       }

    return new PQLTask(label, similarity);
}