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Set of interfaces used by other SKB projects.
/* Copyright 2016 Sven van der Meer
*
* 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 de.vandermeer.skb.interfaces.transformers;
/**
* Converts a String to a Boolean.
*
* @author Sven van der Meer <[email protected]>
* @version v0.0.1 build 170404 (04-Apr-17) for Java 1.8
* @since v0.0.1
*/
public interface String_To_Boolean extends IsTransformer {
/**
* Transforms a String to a Boolean.
* Returns true if the string is `true` or `on` and false if the string is `false` or `off` (all string are tested ignoring case).
* @param s input string
* @return true if string was `true` or `on`, false if string was `false` or `off`, `null` otherwise
*/
@Override
default Boolean transform(String s) {
if(s!=null){
if("true".equalsIgnoreCase(s) || "on".equalsIgnoreCase(s)){
return new Boolean(true);
}
if("false".equalsIgnoreCase(s) || "off".equalsIgnoreCase(s)){
return new Boolean(false);
}
}
return null;
}
/**
* Creates a transformer that takes a String and returns a Boolean.
* @return new transformer
*/
static String_To_Boolean create(){
return new String_To_Boolean() {};
}
}