StringUtil.java
/*
* Copyright 2021 Red Hat, Inc. and/or its affiliates
* and other contributors as indicated by the @author tags.
*
* 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 org.keycloak.utils;
import java.util.Collection;
public class StringUtil {
public static boolean isBlank(String str) {
return !(isNotBlank(str));
}
public static boolean isNotBlank(String str) {
return str != null && !"".equals(str.trim());
}
/**
* Calling:
* <pre>joinValuesWithLogicalCondition("or", Arrays.asList("foo", "bar", "baz", "caz" ))</pre>
* will return "foo, bar, baz or caz"
*
* @param conditionText condition
* @param values values to be joined with the condition at the end
* @return see the example above
*/
public static String joinValuesWithLogicalCondition(String conditionText, Collection<String> values) {
StringBuilder options = new StringBuilder();
int i = 1;
for (String o : values) {
if (i == values.size()) {
options.append(" " + conditionText + " ");
} else if (i > 1) {
options.append(", ");
}
options.append(o);
i++;
}
return options.toString();
}
}