com.opensymphony.xwork2.config.ConfigurationUtil Maven / Gradle / Ivy
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* 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 com.opensymphony.xwork2.config;
import com.opensymphony.xwork2.config.entities.PackageConfig;
import org.apache.commons.lang3.StringUtils;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.StringTokenizer;
/**
* ConfigurationUtil
*
* @author Jason Carreira Created May 23, 2003 11:22:49 PM
*/
public class ConfigurationUtil {
private static final Logger LOG = LogManager.getLogger(ConfigurationUtil.class);
private ConfigurationUtil() {
}
/**
* Get the {@link PackageConfig} elements with the specified names.
* @param configuration Configuration from which to find the package elements
* @param parent Comma separated list of parent package names
* @return The package elements that correspond to the names in the {@code parent} parameter.
*/
public static List buildParentsFromString(Configuration configuration, String parent) {
List parentPackageNames = buildParentListFromString(parent);
List parentPackageConfigs = new ArrayList<>();
for (String parentPackageName : parentPackageNames) {
PackageConfig parentPackageContext = configuration.getPackageConfig(parentPackageName);
if (parentPackageContext != null) {
parentPackageConfigs.add(parentPackageContext);
}
}
return parentPackageConfigs;
}
/**
* Splits the string into a list using a comma as the token separator.
* @param parent The comma separated string.
* @return A list of tokens from the specified string.
*/
public static List buildParentListFromString(String parent) {
if (StringUtils.isEmpty(parent)) {
return Collections.emptyList();
}
StringTokenizer tokenizer = new StringTokenizer(parent, ",");
List parents = new ArrayList<>();
while (tokenizer.hasMoreTokens()) {
String parentName = tokenizer.nextToken().trim();
if (StringUtils.isNotEmpty(parentName)) {
parents.add(parentName);
}
}
return parents;
}
}