org.xnio.ReadPropertyAction Maven / Gradle / Ivy

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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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/*
 * JBoss, Home of Professional Open Source
 *
 * Copyright 2012 Red Hat, Inc. and/or its affiliates.
 *
 * 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.xnio;

import java.security.PrivilegedAction;

/**
 * A simple property-read privileged action.
 *
 * @author David M. Lloyd
 */
public final class ReadPropertyAction implements PrivilegedAction {
    private final String propertyName;
    private final String defaultValue;

    /**
     * Construct a new instance.
     *
     * @param propertyName the property name
     * @param defaultValue the default value
     */
    public ReadPropertyAction(final String propertyName, final String defaultValue) {
        this.propertyName = propertyName;
        this.defaultValue = defaultValue;
    }

    /**
     * Run the action.
     *
     * @return the property or default value
     */
    public String run() {
        return System.getProperty(propertyName, defaultValue);
    }
}