/* * Copyright (c) 2004, 2013, 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 java.text.*; import sun.jvmstat.monitor.*; /** * A class implementing the Closure interface for iterating over the * specified columns of data and generating the columnized string of * data representing a row of output for the form. * * @author Brian Doherty * @since 1.5 */ public class RowClosure implements Closure { private MonitoredVm vm; private StringBuilder row = new StringBuilder(); public RowClosure(MonitoredVm vm) { this.vm = vm; } public void visit(Object o, boolean hasNext) throws MonitorException { if (! (o instanceof ColumnFormat)) { return; } ColumnFormat c = (ColumnFormat)o; String s = null; Expression e = c.getExpression(); ExpressionEvaluator ee = new ExpressionExecuter(vm); Object value = ee.evaluate(e); if (value instanceof String) { s = (String)value; } else if (value instanceof Number) { double d = ((Number)value).doubleValue(); double scaledValue = c.getScale().scale(d); DecimalFormat df = new DecimalFormat(c.getFormat()); DecimalFormatSymbols syms = df.getDecimalFormatSymbols(); syms.setNaN("-"); df.setDecimalFormatSymbols(syms); s = df.format(scaledValue); } c.setPreviousValue(value); s = c.getAlignment().align(s, c.getWidth()); row.append(s); if (hasNext) { row.append(" "); } } public String getRow() { return row.toString(); } }