001/** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.activemq.util; 018 019import java.beans.PropertyEditorSupport; 020import java.util.regex.Matcher; 021import java.util.regex.Pattern; 022 023/** 024 * Converts string values like "20 Mb", "1024kb", and "1g" to int values in 025 * bytes. 026 */ 027public class MemoryIntPropertyEditor extends PropertyEditorSupport { 028 public void setAsText(String text) throws IllegalArgumentException { 029 030 Pattern p = Pattern.compile("^\\s*(\\d+)\\s*(b)?\\s*$", Pattern.CASE_INSENSITIVE); 031 Matcher m = p.matcher(text); 032 if (m.matches()) { 033 setValue(Integer.valueOf(Integer.parseInt(m.group(1)))); 034 return; 035 } 036 037 p = Pattern.compile("^\\s*(\\d+)\\s*k(b)?\\s*$", Pattern.CASE_INSENSITIVE); 038 m = p.matcher(text); 039 if (m.matches()) { 040 setValue(Integer.valueOf(Integer.parseInt(m.group(1)) * 1024)); 041 return; 042 } 043 044 p = Pattern.compile("^\\s*(\\d+)\\s*m(b)?\\s*$", Pattern.CASE_INSENSITIVE); 045 m = p.matcher(text); 046 if (m.matches()) { 047 setValue(Integer.valueOf(Integer.parseInt(m.group(1)) * 1024 * 1024)); 048 return; 049 } 050 051 p = Pattern.compile("^\\s*(\\d+)\\s*g(b)?\\s*$", Pattern.CASE_INSENSITIVE); 052 m = p.matcher(text); 053 if (m.matches()) { 054 setValue(Integer.valueOf(Integer.parseInt(m.group(1)) * 1024 * 1024 * 1024)); 055 return; 056 } 057 058 throw new IllegalArgumentException("Could convert not to a memory size: " + text); 059 } 060 061 public String getAsText() { 062 Integer value = (Integer)getValue(); 063 return value != null ? value.toString() : ""; 064 } 065 066}