@Override public boolean accept(final ASTVisitor visitor) { for (final Expr e : preds) { visitor.enterFocus(); if (!e.accept(visitor)) return false; visitor.exitFocus(); } return root.accept(visitor); }
@Override public boolean accept(final ASTVisitor visitor) { if (root == null) { if (!visitor.lock(DBLocking.CTX)) return false; } else if (!root.accept(visitor)) { return false; } visitor.enterFocus(); if (!visitAll(visitor, steps)) return false; visitor.exitFocus(); return true; }