org.springframework.batch.item.file.transform.Range.java Source code

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Here is the source code for org.springframework.batch.item.file.transform.Range.java

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/*
 * Copyright 2006-2007 the original author or authors.
 *
 * 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
 *
 *      https://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.springframework.batch.item.file.transform;

import org.springframework.util.Assert;

/**
 * A class to represent ranges. A Range can have minimum/maximum values from
 * interval <1,Integer.MAX_VALUE-1> A Range can be unbounded at maximum
 * side. This can be specified by passing {@link Range#UPPER_BORDER_NOT_DEFINED}} as max
 * value or using constructor {@link #Range(int)}.
 * 
 * @author peter.zozom
 */
public class Range {

    public final static int UPPER_BORDER_NOT_DEFINED = Integer.MAX_VALUE;

    final private int min;
    final private int max;

    public Range(int min) {
        this(min, UPPER_BORDER_NOT_DEFINED);
    }

    public Range(int min, int max) {
        checkMinMaxValues(min, max);
        this.min = min;
        this.max = max;
    }

    public int getMax() {
        return max;
    }

    public int getMin() {
        return min;
    }

    public boolean hasMaxValue() {
        return max != UPPER_BORDER_NOT_DEFINED;
    }

    @Override
    public String toString() {
        return hasMaxValue() ? min + "-" + max : String.valueOf(min);
    }

    private void checkMinMaxValues(int min, int max) {
        Assert.isTrue(min > 0, "Min value must be higher than zero");
        Assert.isTrue(min <= max, "Min value should be lower or equal to max value");
    }
}