com.hazelcast.org.codehaus.commons.compiler.util.SystemProperties Maven / Gradle / Ivy
/*
* Janino - An embedded Java[TM] compiler
*
* Copyright (c) 2020 Arno Unkrig. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
* following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the
* following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote
* products derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.hazelcast.org.codehaus.commons.compiler.util;
import com.hazelcast.org.codehaus.commons.nullanalysis.Nullable;
public final
class SystemProperties {
private SystemProperties() {}
/**
* @return Whether the class property is set and its value equals, ignoring case, {@code "true"}
* @see #getClassProperty(Class, String, String)
*/
public static boolean
getBooleanClassProperty(Class targetClass, String classPropertyName) {
return SystemProperties.getBooleanClassProperty(targetClass, classPropertyName, false);
}
/**
* @return Whether the value of the class property its value equals, ignoring case, {@code "true"}, or, if that
* class property is not set, defaultValue
* @see #getClassProperty(Class, String, String)
*/
public static boolean
getBooleanClassProperty(Class targetClass, String classPropertyName, boolean defaultValue) {
String s = SystemProperties.getClassProperty(targetClass, classPropertyName);
return s != null ? Boolean.parseBoolean(s) : defaultValue;
}
/**
* @return The value of the class property, converted to integer, or, if that class property
* is not set, defaultValue
* @throws NumberFormatException The value of the class property could be parsed as an integer
* @see #getClassProperty(Class, String, String)
* @see Integer#parseInt(String)
*/
public static int
getIntegerClassProperty(Class targetClass, String classPropertyName, int defaultValue) {
String s = SystemProperties.getClassProperty(targetClass, classPropertyName);
return s != null ? Integer.parseInt(s) : defaultValue;
}
/**
* @return The value of the class property, or, if that class property is not set, {@code null}
* @see #getClassProperty(Class, String, String)
*/
@Nullable public static String
getClassProperty(Class targetClass, String classPropertyName) {
return SystemProperties.getClassProperty(targetClass, classPropertyName, null);
}
/**
* Gets the value of a "class property".
*
* A class property is configured by a set of system properties (decreasing priority):
*
*
* - fully-qualified-name-of-targetClass{@code .}classPropertyName
* - simple-name-of-targetClass{@code .}classPropertyName
*
*
* @return The value of the class property, or, if that class property is not set, defaultValue
*/
@Nullable public static String
getClassProperty(Class targetClass, String classPropertyName, @Nullable String defaultValue) {
String result = System.getProperty(targetClass.getName() + "." + classPropertyName);
if (result != null) return result;
result = System.getProperty(targetClass.getSimpleName() + "." + classPropertyName);
if (result != null) return result;
return defaultValue;
}
}