/*
* Copyright (c) 2004, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package sun.tools.jstat;
import sun.jvmstat.monitor.*;
/**
* A class for applying an OptionFormat to a particular context, the context
* of the available Instrumentation for a monitorable Java Virtual Machine.
*
* @author Brian Doherty
* @since 1.5
*/
public class OptionOutputFormatter implements OutputFormatter {
private OptionFormat format;
private String header;
private MonitoredVm vm;
public OptionOutputFormatter(MonitoredVm vm, OptionFormat format)
throws MonitorException {
this.vm = vm;
this.format = format;
resolve();
}
private void resolve() throws MonitorException {
ExpressionEvaluator ee = new ExpressionResolver(vm);
SymbolResolutionClosure ec = new SymbolResolutionClosure(ee);
format.apply(ec);
}
public String getHeader() throws MonitorException {
if (header == null) {
HeaderClosure hc = new HeaderClosure();
format.apply(hc);
header = hc.getHeader();
}
return header;
}
public String getRow() throws MonitorException {
RowClosure rc = new RowClosure(vm);
format.apply(rc);
return rc.getRow();
}
}