EgovIdGnrStrategyImpl.java

/*
 * Copyright 2002-2008 MOPAS(Ministry of Public Administration and Security).
 *
 * 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.
 */
/*
 * Copyright 2008-2009 MOPAS(Ministry of Public Administration and Security).
 *
 * 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 egovframework.rte.fdl.idgnr.impl.strategy;

import egovframework.rte.fdl.idgnr.EgovIdGnrStrategy;

/**
 * Id Generation 정책(Strategy) 를 위한 기본 구현 클래스
 * 
 * <p><b>NOTE</b>: 이 서비스를 통해 정책에 따른 prefix, cipers(자리수),
 * fillChar(채울 character)를 설정하고 이에 따른 ID 가공을 처리할 수 있다. </p>
 * 
 * @author 실행환경 개발팀 김태호
 * @since 2009.02.01
 * @version 1.0
 * @see <pre>
 *  == 개정이력(Modification Information) ==
 *   
 *   수정일      수정자           수정내용
 *  -------    --------    ---------------------------
 *   2009.02.01  김태호          최초 생성
 * 
 * </pre>
 */
public class EgovIdGnrStrategyImpl implements EgovIdGnrStrategy {
	private static final int DEFAULT_CIPERS = 5;

    // 정책으로 입력된 prefix
    private String prefix;

    // 자리수로 디폴트는 5자리
    private int cipers = DEFAULT_CIPERS;

    // 채울 charater로 기본은 '0'
    private char fillChar = '0';

    /**
     * 생성된 String 타입의 ID를 입력받아서 정책으로 입력된 PREFIX에 기본 채울
     * 문자를 지정 길이만큼 넣어서 아이디 생성.
     * 
     * @param originalId original id to be converted
     * @return assembled id
     */
    public String makeId(String originalId) {
        return prefix + fillString(originalId, fillChar, cipers);
    }

    /**
     * 정책정보.
     * 
     * @param cipers cipers
     */
    public void setCipers(int cipers) {
        this.cipers = cipers;
    }

    /**
     * Prefix.
     * 
     * @param prefix prefix
     */
    public void setPrefix(String prefix) {
        this.prefix = prefix;
    }

    /**
     * properties. 
     * 
     * @param fillChar fillChar
     */
    public void setFillChar(char fillChar) {
        this.fillChar = fillChar;
    }

    /**
     * 생성자.
     * 
     * @param prefix prefix
     * @param cipers cipers
     * @param fillChar fillChar
     */
    public EgovIdGnrStrategyImpl(String prefix, int cipers, char fillChar) {
        super();
        this.prefix = prefix;
        this.cipers = cipers;
        this.fillChar = fillChar;
    }

    /**
     * 생성자.
     */
    public EgovIdGnrStrategyImpl() {
        super();
    }

    /**
     * 대상 길이만큼 디폴트 Char로 채우기.
     */
    public static String fillString(String originalStr, char ch, int cipers) {
        int originalStrLength = originalStr.length();

        if (cipers < originalStrLength) {
            return null;
        }

        int difference = cipers - originalStrLength;

        StringBuffer strBuf = new StringBuffer();
        for (int i = 0; i < difference; i++) {
            strBuf.append(ch);
        }

        strBuf.append(originalStr);
        
        return strBuf.toString();
    }
}