| package org.projectfloodlight.openflow.types; |
| |
| import org.jboss.netty.buffer.ChannelBuffer; |
| import org.projectfloodlight.openflow.annotations.Immutable; |
| import org.projectfloodlight.openflow.exceptions.OFParseError; |
| |
| /** |
| * Abstraction of a buffer id in OpenFlow. Immutable. |
| * |
| * @author Rob Vaterlaus <rob.vaterlaus@bigswitch.com> |
| */ |
| @Immutable |
| public class OFBufferId { |
| |
| public static final OFBufferId NO_BUFFER = new OFBufferId(0xFFFFFFFF); |
| |
| private final int rawValue; |
| |
| private OFBufferId(int rawValue) { |
| this.rawValue = rawValue; |
| } |
| |
| public static OFBufferId of(final int rawValue) { |
| if (rawValue == NO_BUFFER.getInt()) |
| return NO_BUFFER; |
| return new OFBufferId(rawValue); |
| } |
| |
| public int getInt() { |
| return rawValue; |
| } |
| |
| @Override |
| public String toString() { |
| return Long.toString(U32.f(rawValue)); |
| } |
| |
| public void write4Bytes(ChannelBuffer c) { |
| c.writeInt(this.rawValue); |
| } |
| |
| public static OFBufferId read4Bytes(ChannelBuffer c) throws OFParseError { |
| return OFBufferId.of((int)(c.readUnsignedInt() & 0xFFFFFFFF)); |
| } |
| |
| @Override |
| public int hashCode() { |
| final int prime = 31; |
| int result = 1; |
| result = prime * result + rawValue; |
| return result; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) |
| return true; |
| if (obj == null) |
| return false; |
| if (getClass() != obj.getClass()) |
| return false; |
| OFBufferId other = (OFBufferId) obj; |
| if (rawValue != other.rawValue) |
| return false; |
| return true; |
| } |
| } |