IntegrityDefinitionDao.java

/*
 * Copyright (c) 2012 Chris Ellison, Mike Deats, Liron Yahdav, Ryan Neal,
 * Brandon Sutherlin, Scott Griffin
 * 
 * This software is released under the MIT license
 * (http://www.opensource.org/licenses/mit-license.php)
 * 
 * Created on Feb 7, 2012
 */
package edu.cmu.sv.arinc838.dao;

import java.io.IOException;
import java.util.Arrays;

import com.arinc.arinc838.IntegrityDefinition;

import edu.cmu.sv.arinc838.binary.BdfFile;

public class IntegrityDefinitionDao {

	public static enum IntegrityType {
		CRC16(2, 2), CRC32(3, 4), CRC64(6, 8);

		private long type;
		private int byteCount;

		private IntegrityType(long type, int byteCount) {
			this.type = type;
			this.byteCount = byteCount;
		}

		public long getType() {
			return type;
		}

		@Override
		public String toString() {
			return super.toString() + "(" + type + ")";
		}

		public static String asString() {
			return "[" + CRC16 + "," + CRC32 + "," + CRC64 + "]";
		}

		public static IntegrityType fromLong(long value) {
			if (value == CRC16.getType()) {
				return CRC16;
			} else if (value == CRC32.getType()) {
				return CRC32;
			} else if (value == CRC64.getType()) {
				return CRC64;
			}
			return null;
		}
		
		public int getByteCount() {
			return byteCount;
		}
	}

	private long integType;
	private byte[] integValue;

	public IntegrityDefinitionDao() {
	}

	public IntegrityDefinitionDao(IntegrityDefinition integDef) {
		setIntegrityType(integDef.getIntegrityType());
		setIntegrityValue(integDef.getIntegrityValue());
	}

	public IntegrityDefinitionDao(BdfFile bdfFile) throws IOException {
		setIntegrityType(bdfFile.readUint32());
		setIntegrityValue(bdfFile.readHexbin64k());
	}

	public void setIntegrityType(long value) {
		integType = value;
	}

	public long getIntegrityType() {
		return integType;
	}

	public void setIntegrityValue(byte[] value) {
		integValue = value;
	}

	public byte[] getIntegrityValue() {
		return integValue;
	}

	@Override
	public int hashCode() {
		if (this.getIntegrityValue() != null) {
			return Arrays.hashCode(this.getIntegrityValue());
		}

		return 0;
	}

	@Override
	public boolean equals(Object obj) {
		return obj != null
				&& this == obj
				|| (obj instanceof IntegrityDefinitionDao && equals((IntegrityDefinitionDao) obj));
	}

	public boolean equals(IntegrityDefinitionDao obj) {
		return obj != null
				&& (this == obj
				|| (Arrays.equals(this.getIntegrityValue(),
						obj.getIntegrityValue()) && (this.getIntegrityType() == obj
						.getIntegrityType())));
	}
}