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Java example source code file (BigMoneyProvider.java)

This example Java source code file (BigMoneyProvider.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

bigmoney, bigmoneyprovider

The BigMoneyProvider.java Java example source code

/*
 *  Copyright 2009-present, Stephen Colebourne
 *
 *  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.joda.money;

/**
 * Provides a uniform interface to obtain a {@code BigMoney}.
 * <p>
 * This interface provides an abstraction over {@link Money} and {@link BigMoney}.
 * In general, applications should use the concrete types, not this interface.
 * However, utilities and frameworks may choose to make use of this abstraction.
 * <p>
 * Implementations of {@code BigMoneyProvider} may be mutable.
 * To minimise the risk of the value of the provider changing while processing,
 * any method that takes a {@code BigMoneyProvider} as a parameter should convert
 * it to a {@code BigMoney} immediately and use that directly from then on.
 * The method {@link BigMoney#of(BigMoneyProvider)} performs the conversion
 * safely with null checks and is recommended for this purpose.
 * <p>
 * This interface makes no guarantees about the immutability or
 * thread-safety of implementations.
 */
public interface BigMoneyProvider {

    /**
     * Returns a {@code BigMoney} instance equivalent to the value of this object.
     * <p>
     * It is recommended that {@link BigMoney#of(BigMoneyProvider)} is used in
     * preference to calling this method directly. It is also recommended that the
     * converted {@code BigMoney} is cached in a local variable instead of
     * performing the conversion multiple times.
     * 
     * @return the converted money instance, never null
     * @throws RuntimeException if conversion is not possible
     */
    BigMoney toBigMoney();

}

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