Method optimize

basex-core/src/main/java/org/basex/query/expr/CmpSR.java:62–70

(final CompileContext cc)

  }

  @Override
  public Expr optimize(final CompileContext cc) throws QueryException {
    expr = expr.simplifyFor(Simplify.STRING, cc);

    final SeqType st = expr.seqType();
    single = st.zeroOrOne() && !st.mayBeWrapped();

    return expr instanceof Value ? cc.preEval(this) : this;
  }

  /**
   * Tries to convert the specified expression into a range expression.