net.shibboleth.utilities.java.support.logic.CaseInsensitiveStringMatchPredicate Maven / Gradle / Ivy
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* Licensed to the University Corporation for Advanced Internet Development,
* Inc. (UCAID) under one or more contributor license agreements. See the
* NOTICE file distributed with this work for additional information regarding
* copyright ownership. The UCAID 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 net.shibboleth.utilities.java.support.logic;
import javax.annotation.Nonnull;
import com.google.common.base.Predicate;
/**
* A {@link Predicate} that checks that a given input string matches a target string while ignoring case. If a given
* input is null this predicate returns false.
*/
public class CaseInsensitiveStringMatchPredicate implements Predicate {
/** The target string. */
private final String target;
/**
* Constructor.
*
* @param matchString that string against which predicate inputs will be checked
*/
public CaseInsensitiveStringMatchPredicate(@Nonnull final String matchString) {
target = Constraint.isNotNull(matchString, "Target string can not be null");
}
/** {@inheritDoc} */
public boolean apply(CharSequence input) {
if (input == null) {
return false;
}
return target.equalsIgnoreCase(input.toString());
}
}