NumberDefinition.java

/*
 * 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 org.basepom.mojo.propertyhelper.beans;

import static com.google.common.base.Preconditions.checkState;

import com.google.common.annotations.VisibleForTesting;

public class NumberDefinition
        extends AbstractDefinition<NumberDefinition> {

    public static final String INITIAL_VALUE = "0";

    /**
     * If a multi-number, which field to increment. Field injected by Maven.
     */
    int fieldNumber = 0;

    /**
     * Increment of the property when changing it. Field injected by Maven.
     */
    int increment = 1;

    public NumberDefinition() {
        super();
        setInitialValue(INITIAL_VALUE);
    }

    public int getFieldNumber() {
        return fieldNumber;
    }

    @VisibleForTesting
    public NumberDefinition setFieldNumber(final int fieldNumber) {
        this.fieldNumber = fieldNumber;
        return this;
    }

    public int getIncrement() {
        return increment;
    }

    @VisibleForTesting
    public NumberDefinition setIncrement(final int increment) {
        this.increment = increment;
        return this;
    }

    @Override
    public void check() {
        super.check();
        checkState(getInitialValue().isPresent(), "the initial value must not be empty");
        checkState(fieldNumber >= 0, "the field number must be >= 0");
    }
}