com.bazaarvoice.jolt.modifier.function.Strings Maven / Gradle / Ivy

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/*
 * Copyright 2013 Bazaarvoice, Inc.
 *
 * 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 com.bazaarvoice.jolt.modifier.function;

import com.bazaarvoice.jolt.common.Optional;

import java.util.List;

@SuppressWarnings( "deprecated" )
public class Strings {

    public static final class toLowerCase extends Function.SingleFunction {
        @Override
        protected Optional applySingle( final Object arg ) {
            return arg == null ? Optional.of( null ) : Optional.of( arg.toString().toLowerCase() );
        }
    }

    public static final class toUpperCase extends Function.SingleFunction {
        @Override
        protected Optional applySingle( final Object arg ) {
            return arg == null ? Optional.of( null ): Optional.of( arg.toString().toUpperCase() );
        }
    }

    public static final class concat extends Function.ListFunction {
        @Override
        protected Optional