01: /*
02: * Copyright 2004 Sun Microsystems, Inc. All Rights Reserved.
03: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
04: *
05: * This code is free software; you can redistribute it and/or modify it
06: * under the terms of the GNU General Public License version 2 only, as
07: * published by the Free Software Foundation. Sun designates this
08: * particular file as subject to the "Classpath" exception as provided
09: * by Sun in the LICENSE file that accompanied this code.
10: *
11: * This code is distributed in the hope that it will be useful, but WITHOUT
12: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14: * version 2 for more details (a copy is included in the LICENSE file that
15: * accompanied this code).
16: *
17: * You should have received a copy of the GNU General Public License version
18: * 2 along with this work; if not, write to the Free Software Foundation,
19: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20: *
21: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22: * CA 95054 USA or visit www.sun.com if you need additional information or
23: * have any questions.
24: */
25:
26: package sun.tools.jstat;
27:
28: import sun.jvmstat.monitor.*;
29:
30: /**
31: * A class for applying an OptionFormat to a particular context, the context
32: * of the available Instrumentation for a monitorable Java Virtual Machine.
33: *
34: * @author Brian Doherty
35: * @version 1.8, 05/05/07
36: * @since 1.5
37: */
38: public class OptionOutputFormatter implements OutputFormatter {
39: private OptionFormat format;
40: private String header;
41: private MonitoredVm vm;
42:
43: public OptionOutputFormatter(MonitoredVm vm, OptionFormat format)
44: throws MonitorException {
45: this .vm = vm;
46: this .format = format;
47: resolve();
48: }
49:
50: private void resolve() throws MonitorException {
51: ExpressionEvaluator ee = new ExpressionResolver(vm);
52: SymbolResolutionClosure ec = new SymbolResolutionClosure(ee);
53: format.apply(ec);
54: }
55:
56: public String getHeader() throws MonitorException {
57: if (header == null) {
58: HeaderClosure hc = new HeaderClosure();
59: format.apply(hc);
60: header = hc.getHeader();
61: }
62: return header;
63: }
64:
65: public String getRow() throws MonitorException {
66: RowClosure rc = new RowClosure(vm);
67: format.apply(rc);
68: return rc.getRow();
69: }
70: }
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