com.adaptris.core.util.Args.java Source code

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Here is the source code for com.adaptris.core.util.Args.java

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/*
 * Copyright 2015 Adaptris Ltd.
 * 
 * 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 com.adaptris.core.util;

import org.apache.commons.lang.StringUtils;

public abstract class Args {

    /**
     * Convenience to throw an {@link IllegalArgumentException} if the associated argument null.
     * 
     * @param argument the argument.
     * @param member the member name associated with this argument.
     * @return the argument
     */
    public static <T> T notNull(final T argument, final String member) {
        if (argument == null) {
            throw new IllegalArgumentException(member + " may not be null");
        }
        return argument;
    }

    /**
     * Convenience to throw an {@link IllegalArgumentException} if the associated argument is the
     * empty string (or null) as defined by {@link StringUtils#isEmpty(String)}.
     * 
     * @param argument the argument.
     * @param member the member name associated with this argument.
     * @return the argument
     */
    public static String notEmpty(String argument, final String member) {
        if (StringUtils.isEmpty(argument)) {
            throw new IllegalArgumentException(member + " is empty/null");
        }
        return argument;
    }

    /**
     * Convenience to throw an {@link IllegalArgumentException} if the associated argument is the
     * blank string as defined by {@link StringUtils#isBlank(String)}.
     * 
     * @param argument the argument.
     * @param member the member name associated with this argument.
     * @return the argument
     */
    public static String notBlank(final String argument, final String member) {
        if (StringUtils.isBlank(argument)) {
            throw new IllegalArgumentException(member + " may not be blank/empty/null");
        }
        return argument;
    }
}