001    /**
002     * Copyright 2010-2012 The Kuali Foundation
003     *
004     * Licensed under the Educational Community License, Version 2.0 (the "License");
005     * you may not use this file except in compliance with the License.
006     * You may obtain a copy of the License at
007     *
008     * http://www.opensource.org/licenses/ecl2.php
009     *
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed under the License is distributed on an "AS IS" BASIS,
012     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013     * See the License for the specific language governing permissions and
014     * limitations under the License.
015     */
016    package org.kuali.common.util;
017    
018    import java.util.ArrayList;
019    import java.util.List;
020    
021    import org.slf4j.Logger;
022    import org.slf4j.LoggerFactory;
023    
024    public class ModeUtils {
025    
026            private static final Logger logger = LoggerFactory.getLogger(ModeUtils.class);
027    
028            public static final void validate(Mode mode, String msg) {
029                    validate(mode, msg, msg);
030            }
031    
032            public static final void validate(Mode mode, String msg, String errMsg) {
033                    validate(mode, msg, null, errMsg);
034            }
035    
036            public static final void validate(Mode mode, String msg, Object arg, String errMsg) {
037                    validate(mode, msg, arg, null, errMsg);
038            }
039    
040            public static final void validate(Mode mode, String msg, Object arg1, Object arg2, String errMsg) {
041                    validate(mode, msg, getArgs(arg1, arg2), errMsg);
042            }
043    
044            public static final void validate(Mode mode, String msg, Object[] args, String errMsg) {
045                    switch (mode) {
046                    case IGNORE:
047                            return;
048                    case DEBUG:
049                            logger.debug(msg, args);
050                            return;
051                    case INFORM:
052                            logger.info(msg, args);
053                            return;
054                    case WARN:
055                            logger.warn(msg, args);
056                            return;
057                    case ERROR:
058                            logger.error(msg, args);
059                            throw new IllegalStateException(errMsg);
060                    default:
061                            throw new IllegalArgumentException("Mode '" + mode + "' is unknown");
062                    }
063            }
064    
065            protected static final Object[] getArgs(Object arg1, Object arg2) {
066                    if (arg1 == null && arg2 == null) {
067                            return null;
068                    }
069                    List<Object> args = new ArrayList<Object>();
070                    if (arg1 != null) {
071                            args.add(arg1);
072                    }
073                    if (arg2 != null) {
074                            args.add(arg2);
075                    }
076                    return CollectionUtils.toObjectArray(args);
077            }
078    
079    }