public void setShouldCacheNodes(boolean b)
  {

    if (!isFresh())
      throw new RuntimeException(
        XSLMessages.createXPATHMessage(XPATHErrorResources.ER_CANNOT_CALL_SETSHOULDCACHENODE, null)); //"Can not call setShouldCacheNodes after nextNode has been called!");

    m_cacheNodes = b;
    m_mutable = true;
  }
public void setShouldCacheNodes ( boolean b ) { if ( ! isFresh ( ) ) throw new RuntimeException ( XSLMessages . createXPATHMessage ( XPATHErrorResources . ER_CANNOT_CALL_SETSHOULDCACHENODE , null ) ) ; m_cacheNodes = b ; m_mutable = true ; }
If setShouldCacheNodes(true) is called, then nodes will
be cached.  They are not cached by default. This switch must
be set before the first call to nextNode is made, to ensure
that all nodes are cached.

@param b true if this node set should be cached.
@throws RuntimeException thrown if an attempt is made to
request caching after we've already begun stepping through the
nodes in this set.