[LUCENE-6221] escape whole word operators (OR, AND, NOT)

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: core/queryparser
• Lucene Fields: New
• Assignee: Unassigned
• Reporter: Shaun A Elliott
• Created: 05/Feb/15 22:18
• Updated: 28/Aug/22 14:24

Description

The current QueryParser escape method does not escape whole word operators (OR, AND, NOT):

  public static String escape(String s) {
    StringBuilder sb = new StringBuilder();
    for (int i = 0; i < s.length(); i++) {
      char c = s.charAt(i);
      // These characters are part of the query syntax and must be escaped
      if (c == '\\' || c == '+' || c == '-' || c == '!' || c == '(' || c == ')' || c == ':'
        || c == '^' || c == '[' || c == ']' || c == '\"' || c == '{' || c == '}' || c == '~'
        || c == '*' || c == '?' || c == '|' || c == '&' || c == '/') {
        sb.append('\\');
      }
      sb.append(c);
    }
    return sb.toString();
  }

It would be better if these words were escaped too.