1 /* 2 * Copyright (c) 2004, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * 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 * @since 1.5 36 */ 37 public class OptionOutputFormatter implements OutputFormatter { 38 private OptionFormat format; 39 private String header; 40 private MonitoredVm vm; 41 OptionOutputFormatter(MonitoredVm vm, OptionFormat format)42 public OptionOutputFormatter(MonitoredVm vm, OptionFormat format) 43 throws MonitorException { 44 this.vm = vm; 45 this.format = format; 46 resolve(); 47 } 48 resolve()49 private void resolve() throws MonitorException { 50 ExpressionEvaluator ee = new ExpressionResolver(vm); 51 SymbolResolutionClosure ec = new SymbolResolutionClosure(ee); 52 format.apply(ec); 53 } 54 getHeader()55 public String getHeader() throws MonitorException { 56 if (header == null) { 57 HeaderClosure hc = new HeaderClosure(); 58 format.apply(hc); 59 header = hc.getHeader(); 60 } 61 return header; 62 } 63 getRow()64 public String getRow() throws MonitorException { 65 RowClosure rc = new RowClosure(vm); 66 format.apply(rc); 67 return rc.getRow(); 68 } 69 } 70