org.epics.pvmanager.ChannelHandlerWriteSubscription Maven / Gradle / Ivy
/**
* Copyright (C) 2010-14 pvmanager developers. See COPYRIGHT.TXT
* All rights reserved. Use is subject to license terms. See LICENSE.TXT
*/
package org.epics.pvmanager;
/**
* Groups all the parameters required to add a writer to a ChannelHandler.
*
* All parameters where grouped in this class so that if something needs to be
* added or removed the impact is lessened. The class is immutable so that
* the ChannelHandler can cache it for reference.
*
* @author carcassi
*/
public class ChannelHandlerWriteSubscription {
/**
* Creates a new subscription.
*
* @param writeCache the cache where to read the value from
* @param exceptionWriteFunction the write function to notify to process errors
* @param connectionWriteFunction the write function to notify for connection updates
*/
public ChannelHandlerWriteSubscription(WriteCache writeCache, WriteFunction exceptionWriteFunction, WriteFunction connectionWriteFunction) {
this.writeCache = writeCache;
this.exceptionWriteFunction = exceptionWriteFunction;
this.connectionWriteFunction = connectionWriteFunction;
}
private final WriteCache writeCache;
private final WriteFunction exceptionWriteFunction;
private final WriteFunction connectionWriteFunction;
/**
* The cache to hold the value to write.
*
* @return the write cache
*/
public WriteCache getWriteCache() {
return writeCache;
}
/**
* The write function for connection/disconnection errors.
*
* @return the write function; never null
*/
public WriteFunction getExceptionWriteFunction() {
return exceptionWriteFunction;
}
/**
* The write function for the connection flag.
*
* @return the write function; never null
*/
public WriteFunction getConnectionWriteFunction() {
return connectionWriteFunction;
}
@Override
public int hashCode() {
int hash = 3;
hash = 11 * hash + (this.writeCache != null ? this.writeCache.hashCode() : 0);
hash = 11 * hash + (this.exceptionWriteFunction != null ? this.exceptionWriteFunction.hashCode() : 0);
hash = 11 * hash + (this.connectionWriteFunction != null ? this.connectionWriteFunction.hashCode() : 0);
return hash;
}
@Override
public boolean equals(Object obj) {
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
final ChannelHandlerWriteSubscription other = (ChannelHandlerWriteSubscription) obj;
if (this.writeCache != other.writeCache && (this.writeCache == null || !this.writeCache.equals(other.writeCache))) {
return false;
}
if (this.exceptionWriteFunction != other.exceptionWriteFunction && (this.exceptionWriteFunction == null || !this.exceptionWriteFunction.equals(other.exceptionWriteFunction))) {
return false;
}
if (this.connectionWriteFunction != other.connectionWriteFunction && (this.connectionWriteFunction == null || !this.connectionWriteFunction.equals(other.connectionWriteFunction))) {
return false;
}
return true;
}
}