uk.gov.gchq.koryphe.impl.function.ToUpperCase.java Source code

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Here is the source code for uk.gov.gchq.koryphe.impl.function.ToUpperCase.java

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/*
 * Copyright 2018 Crown Copyright
 *
 * 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 uk.gov.gchq.koryphe.impl.function;

import org.apache.commons.lang3.StringUtils;

import uk.gov.gchq.koryphe.Since;
import uk.gov.gchq.koryphe.Summary;
import uk.gov.gchq.koryphe.function.KorypheFunction;

/**
 * A <code>ToUpperCase</code> is a {@link java.util.function.Function} that takes
 * an Object and performs <code>toUpperCase</code> on it.
 * <p>
 * The resulting object is what is returned from the method.
 */
@Since("1.5.0")
@Summary("performs toUpperCase on an input Object")
public class ToUpperCase extends KorypheFunction<Object, String> {
    @Override
    public String apply(final Object value) {
        if (null == value) {
            return null;
        }

        if (value instanceof String) {
            StringUtils.upperCase((String) value);
        }

        return StringUtils.upperCase(value.toString());
    }
}