QueryManipulator.java 文件源码

public DiggedAliases getTableAliases() {
    Map<String, String> result = new HashMap<String, String>();
    FusionTablesSqlParser parser = getParser();
    VerboseErrorListener errorListener = Util.addVerboseErrorListener(parser);

    String xpath = "//table_name_with_alias";
    Iterator<ParseTree> trees = XPath.findAll(parser.fusionTablesSql(), xpath, parser).iterator();
    while (trees.hasNext()) {
        ParseTree parseTree = trees.next();
        addAlias(result, parseTree);
    }
    return new DiggedAliases(result, errorListener.getErrors());
}