org.ogema.channels.ChannelConfigurationImpl Maven / Gradle / Ivy

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/**
 * Copyright 2011-2018 Fraunhofer-Gesellschaft zur Förderung der angewandten Wissenschaften e.V.
 *
 * 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.ogema.channels;

import org.ogema.core.application.AppID;
import org.ogema.core.channelmanager.ChannelConfiguration;
import org.ogema.core.channelmanager.driverspi.ChannelLocator;
import org.ogema.core.channelmanager.driverspi.DeviceLocator;

final class ChannelConfigurationImpl implements ChannelConfiguration {

	private final ChannelLocator channelLocator;
	private final long samplingPeriodInMs;
	private final Direction direction;
	private final AppID appID;

	ChannelConfigurationImpl(ChannelLocator channel, long samplingTime, Direction direction, AppID appID) {

		if (channel == null)
			throw new NullPointerException("Channel is null");

		if (direction == null)
			throw new NullPointerException("Direction is null");

		if (samplingTime < 0 && (samplingTime != ChannelConfiguration.LISTEN_FOR_UPDATE))
			throw new IllegalArgumentException("Invalid sampling time " + samplingTime);

		if (appID == null)
			throw new NullPointerException("app id is null");

		this.channelLocator = channel;
		this.samplingPeriodInMs = samplingTime;
		this.direction = direction;
		this.appID = appID;
	}

	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + ((appID == null) ? 0 : appID.hashCode());
		result = prime * result + ((channelLocator == null) ? 0 : channelLocator.hashCode());
		result = prime * result + ((direction == null) ? 0 : direction.hashCode());
		result = prime * result + (int) (samplingPeriodInMs ^ (samplingPeriodInMs >>> 32));
		return result;
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		ChannelConfigurationImpl other = (ChannelConfigurationImpl) obj;
		if (appID == null) {
			if (other.appID != null)
				return false;
		} else if (!appID.equals(other.appID))
			return false;
		if (channelLocator == null) {
			if (other.channelLocator != null)
				return false;
		} else if (!channelLocator.equals(other.channelLocator))
			return false;
		if (direction != other.direction)
			return false;
		if (samplingPeriodInMs != other.samplingPeriodInMs)
			return false;
		return true;
	}
	
	@Override
	public String toString() {
		return "Channel " + channelLocator.toString() + "; app " + appID.getIDString() + "; direction " + direction.toString() + "; sampling " + samplingPeriodInMs;
	}

	@Override
	public ChannelLocator getChannelLocator() {
		return channelLocator;
	}

	@Override
	public long getSamplingPeriod() {
		return this.samplingPeriodInMs;
	}

	@Override
	public Direction getDirection() {
		return this.direction;
	}

	@Override
	public DeviceLocator getDeviceLocator() {
		return this.channelLocator.getDeviceLocator();
	}

	AppID getAppID() {
		return appID;
	}
}