com.mysql.cj.conf.AbstractRuntimeProperty Maven / Gradle / Ivy
/*
* Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License, version 2.0, as published by the
* Free Software Foundation.
*
* This program is also distributed with certain software (including but not
* limited to OpenSSL) that is licensed under separate terms, as designated in a
* particular file or component or in included license documentation. The
* authors of MySQL hereby grant you an additional permission to link the
* program and your derivative works with the separately licensed software that
* they have included with MySQL.
*
* Without limiting anything contained in the foregoing, this file, which is
* part of MySQL Connector/J, is also subject to the Universal FOSS Exception,
* version 1.0, a copy of which can be found at
* http://oss.oracle.com/licenses/universal-foss-exception.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License, version 2.0,
* for more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package com.mysql.cj.conf;
import java.io.Serializable;
import java.lang.ref.WeakReference;
import java.util.ArrayList;
import java.util.List;
import java.util.Properties;
import javax.naming.RefAddr;
import javax.naming.Reference;
import com.mysql.cj.exceptions.ExceptionInterceptor;
public abstract class AbstractRuntimeProperty implements RuntimeProperty, Serializable {
private static final long serialVersionUID = -3424722534876438236L;
private PropertyDefinition propertyDefinition;
protected T value;
protected T initialValue;
protected boolean wasExplicitlySet = false;
private List> listeners;
public AbstractRuntimeProperty() {
}
protected AbstractRuntimeProperty(PropertyDefinition propertyDefinition) {
this.propertyDefinition = propertyDefinition;
this.value = propertyDefinition.getDefaultValue();
this.initialValue = propertyDefinition.getDefaultValue();
}
@Override
public PropertyDefinition getPropertyDefinition() {
return this.propertyDefinition;
}
@Override
public void initializeFrom(Properties extractFrom, ExceptionInterceptor exceptionInterceptor) {
String extractedValue = extractFrom.getProperty(getPropertyDefinition().getName());
extractFrom.remove(getPropertyDefinition().getName());
initializeFrom(extractedValue, exceptionInterceptor);
}
@Override
public void initializeFrom(Reference ref, ExceptionInterceptor exceptionInterceptor) {
RefAddr refAddr = ref.get(getPropertyDefinition().getName());
if (refAddr != null) {
String refContentAsString = (String) refAddr.getContent();
initializeFrom(refContentAsString, exceptionInterceptor);
}
}
protected void initializeFrom(String extractedValue, ExceptionInterceptor exceptionInterceptor) {
if (extractedValue != null) {
setFromString(extractedValue, exceptionInterceptor);
}
}
public void setFromString(String value, ExceptionInterceptor exceptionInterceptor) {
this.value = getPropertyDefinition().parseObject(value, exceptionInterceptor);
this.wasExplicitlySet = true;
}
@Override
public void resetValue() {
// no-op for readable properties
}
public boolean isExplicitlySet() {
return this.wasExplicitlySet;
}
@Override
public void addListener(RuntimePropertyListener l) {
if (this.listeners == null) {
this.listeners = new ArrayList<>();
}
if (!this.listeners.contains(l)) {
this.listeners.add(new WeakReference<>(l));
}
}
@Override
public void removeListener(RuntimePropertyListener listener) {
if (this.listeners != null) {
for (WeakReference wr : this.listeners) {
RuntimePropertyListener l = wr.get();
if (l == listener) {
this.listeners.remove(wr);
break;
}
}
}
}
protected void invokeListeners() {
if (this.listeners != null) {
for (WeakReference wr : this.listeners) {
RuntimePropertyListener l = wr.get();
if (l != null) {
l.handlePropertyChange(this);
} else {
this.listeners.remove(wr);
}
}
}
}
}