Java tutorial
/* * Copyright (c) 2013-2014 mgm technology partners GmbH * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.mgmtp.perfload.agent.util; import com.google.common.base.Function; import com.google.common.base.Joiner; import com.google.common.base.Splitter; import org.apache.commons.lang3.text.StrBuilder; import org.objectweb.asm.Type; import java.util.List; import static com.google.common.collect.FluentIterable.from; import static org.apache.commons.lang.StringUtils.substringAfterLast; import static org.apache.commons.lang.StringUtils.substringBeforeLast; /** * Utility class for class names. * * @since 1.3.0 * @author rnaegele */ public class ClassNameUtils { public static String computeFullyQualifiedMethodName(final String className, final String methodName, final Type[] argumentTypes) { StrBuilder sb = new StrBuilder(50); sb.append(abbreviatePackageName(className)); sb.append('.'); sb.append(methodName); sb.append('('); for (int i = 0; i < argumentTypes.length; ++i) { sb.appendSeparator(", ", i); sb.append(abbreviatePackageName(argumentTypes[i].getClassName())); } sb.append(')'); return sb.toString(); } public static String abbreviatePackageName(String className) { if (className.contains(".")) { String packageName = substringBeforeLast(className, "."); String simpleClassName = substringAfterLast(className, "."); List<String> list = from(Splitter.on('.').splitToList(packageName)) .transform(new Function<String, String>() { @Override public String apply(String input) { return input.substring(0, 1); } }).toList(); return Joiner.on('.').join(list) + '.' + simpleClassName; } else { return className; } } }