Method length

output/java/1.4.19/Interpreter.java:1110–1126

Return the length of a multi-valued attribute or 1 if it is a single attribute. If v is null return 0. The implementation treats several common collections and arrays as special cases for speed.

(Object v)

     */

    public Object length(Object v) {
        if ( v==null ) return 0;
        int i = 1;      // we have at least one of something. Iterator and arrays might be empty.
        if ( v instanceof Map) i = ((Map<?, ?>)v).size();
        else if ( v instanceof Collection) i = ((Collection<?>)v).size();
        else if ( v instanceof Object[] ) i = ((Object[])v).length;
        else if ( v.getClass().isArray() ) i = Array.getLength(v);
        else if ( v instanceof Iterable || v instanceof Iterator ) {
            Iterator<?> it = v instanceof Iterable? ((Iterable<?>)v).iterator() : (Iterator<?>)v;
            i =0;
            while ( it.hasNext() ) {
                it.next();
                i++;
            }
        }
        return i;
    }

    protected String toString(STWriter out, InstanceScope scope, Object value) {
        if ( value !=null ) {