org.eclipse.persistence.jpa.metadata.PropertyHelper Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of eclipselink Show documentation

EclipseLink build based upon Git transaction f2b9fc5

There is a newer version: 5.0.0-B03

/*
 * Copyright (c) 2021 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0,
 * or the Eclipse Distribution License v. 1.0 which is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
 */

package org.eclipse.persistence.jpa.metadata;

import org.eclipse.persistence.internal.security.PrivilegedAccessHelper;
import org.eclipse.persistence.internal.security.PrivilegedGetSystemProperty;
import org.eclipse.persistence.logging.SessionLog;

import java.security.AccessController;
import java.util.Map;

/**
 * Helper class to avoid duplicating code.
 */
final class PropertyHelper {

    /**
     * Check the provided map for an object with the given name.  If that object is not available, check the
     * System properties.  Log the value returned if logging is enabled at the FINEST level
     * @param propertyName property name
     * @param properties properties
     * @param log logger
     * @return object for the given name, null if not found
     */
    static Object getConfigPropertyLogDebug(final String propertyName, Map properties, SessionLog log) {
        Object value = null;
        if (properties != null) {
            value = properties.get(propertyName);
        }
        if (value == null) {
            if (PrivilegedAccessHelper.shouldUsePrivilegedAccess()) {
                value = AccessController.doPrivileged(new PrivilegedGetSystemProperty(propertyName));
            } else {
                value = System.getProperty(propertyName);
            }
        }
        if ((value != null) && (log !=  null)) {
            log.log(SessionLog.FINEST, SessionLog.PROPERTIES, "property_value_specified", new Object[]{propertyName, value});
        }
        return value;
    }
}