org.apache.openejb.util.Join Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.openejb.util;
import java.lang.reflect.Method;
import java.util.Collection;
/**
* @version $Rev: 1153797 $ $Date: 2011-08-04 02:09:44 -0700 (Thu, 04 Aug 2011) $
*/
public class Join {
public static final MethodCallback METHOD_CALLBACK = new MethodCallback();
public static final ClassCallback CLASS_CALLBACK = new ClassCallback();
public static String join(String delimiter, Collection collection) {
if(collection.size() == 0) {
return "";
}
StringBuilder sb = new StringBuilder();
for (Object obj : collection) {
sb.append(obj).append(delimiter);
}
return sb.substring(0, sb.length()-delimiter.length());
}
public static String join(String delimiter, Object... collection) {
if(collection.length ==0) {
return "";
}
StringBuilder sb = new StringBuilder();
for (Object obj : collection) {
sb.append(obj).append(delimiter);
}
return sb.substring(0, sb.length()-delimiter.length());
}
public static String join(String delimiter, NameCallback nameCallback, T... collection) {
if (collection.length == 0) {
return "";
}
StringBuilder sb = new StringBuilder();
for (T obj : collection) {
sb.append(nameCallback.getName(obj)).append(delimiter);
}
return sb.substring(0, sb.length() - delimiter.length());
}
public static String join(String delimiter, NameCallback nameCallback, Collection collection) {
if (collection.size() == 0) {
return "";
}
StringBuilder sb = new StringBuilder();
for (T obj : collection) {
sb.append(nameCallback.getName(obj)).append(delimiter);
}
return sb.substring(0, sb.length() - delimiter.length());
}
public static interface NameCallback {
public String getName(T object);
}
public static class MethodCallback implements NameCallback {
public String getName(Method method) {
return method.getName();
}
}
public static class ClassCallback implements NameCallback> {
public String getName(Class cls) {
return cls.getName();
}
}
}