Mahesh Poojary S | 5afd06c | 2015-08-21 14:51:04 +0530 | [diff] [blame] | 1 | /*
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| 2 | * Copyright 2015 Open Networking Laboratory
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| 3 | *
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License");
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| 5 | * you may not use this file except in compliance with the License.
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| 6 | * You may obtain a copy of the License at
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| 7 | *
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0
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| 9 | *
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| 10 | * Unless required by applicable law or agreed to in writing, software
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 13 | * See the License for the specific language governing permissions and
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| 14 | * limitations under the License.
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| 15 | */
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| 16 | package org.onosproject.pcepio.types;
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| 17 |
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| 18 | import java.util.Objects;
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| 19 | import org.jboss.netty.buffer.ChannelBuffer;
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| 20 | import org.onosproject.pcepio.protocol.PcepVersion;
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| 21 | import org.slf4j.Logger;
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| 22 | import org.slf4j.LoggerFactory;
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| 23 |
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| 24 | import com.google.common.base.MoreObjects;
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| 25 |
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| 26 | /**
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| 27 | * Provide node Flags bits.
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| 28 | */
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| 29 | public class NodeFlagBitsTlv implements PcepValueType {
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| 30 |
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| 31 | /* Reference :[I-D.ietf-idr- ls-distribution] /3.3.1.1
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| 32 | * 0 1 2 3
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| 33 | 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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| 34 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 35 | | Type=[TBD21] | Length=1 |
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| 36 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 37 | |O|T|E|B| Reserved|
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| 38 | +-+-+-+-+-+-+-+-+-+
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| 39 | */
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| 40 |
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| 41 | protected static final Logger log = LoggerFactory.getLogger(NodeFlagBitsTlv.class);
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| 42 |
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| 43 | public static final short TYPE = 14;
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| 44 | public static final short LENGTH = 1;
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| 45 | public static final int SET = 1;
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| 46 | public static final byte OFLAG_SET = (byte) 0x80;
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| 47 | public static final byte TFLAG_SET = 0x40;
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| 48 | public static final byte EFLAG_SET = 0x20;
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| 49 | public static final byte BFLAG_SET = 0x10;
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| 50 |
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| 51 | private final byte rawValue;
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| 52 | private final boolean bOFlag;
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| 53 | private final boolean bTFlag;
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| 54 | private final boolean bEFlag;
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| 55 | private final boolean bBFlag;
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| 56 | private final boolean isRawValueSet;
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| 57 |
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| 58 | /**
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| 59 | * constructor to initialize rawValue.
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| 60 | *
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| 61 | * @param rawValue of Node Flag Bits TLV
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| 62 | */
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| 63 | public NodeFlagBitsTlv(byte rawValue) {
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| 64 | this.rawValue = rawValue;
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| 65 | isRawValueSet = true;
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| 66 | byte temp = rawValue;
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| 67 | this.bOFlag = (temp & OFLAG_SET) == OFLAG_SET ? true : false;
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| 68 | this.bTFlag = (temp & TFLAG_SET) == TFLAG_SET ? true : false;
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| 69 | this.bEFlag = (temp & EFLAG_SET) == EFLAG_SET ? true : false;
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| 70 | this.bBFlag = (temp & BFLAG_SET) == BFLAG_SET ? true : false;
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| 71 | }
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| 72 |
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| 73 | /**
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| 74 | * constructor to initialize different Flags.
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| 75 | *
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| 76 | * @param bOFlag O-flag
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| 77 | * @param bTFlag T-flag
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| 78 | * @param bEFlag E-flag
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| 79 | * @param bBFlag B-flag
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| 80 | */
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| 81 | public NodeFlagBitsTlv(boolean bOFlag, boolean bTFlag, boolean bEFlag, boolean bBFlag) {
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| 82 | this.bOFlag = bOFlag;
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| 83 | this.bTFlag = bTFlag;
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| 84 | this.bEFlag = bEFlag;
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| 85 | this.bBFlag = bBFlag;
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| 86 | this.rawValue = 0;
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| 87 | this.isRawValueSet = false;
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| 88 | }
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| 89 |
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| 90 | /**
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| 91 | * Returns newly created NodeFlagBitsTlv object.
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| 92 | *
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| 93 | * @param raw of Node Flag Bits TLV
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| 94 | * @return new object of NodeFlagBitsTlv
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| 95 | */
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| 96 | public static NodeFlagBitsTlv of(final byte raw) {
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| 97 | return new NodeFlagBitsTlv(raw);
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| 98 | }
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| 99 |
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| 100 | /**
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| 101 | * Returns raw value of NodeFlagBitsTlv.
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| 102 | *
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| 103 | * @return rawValue raw value
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| 104 | */
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| 105 | public byte getbyte() {
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| 106 | return rawValue;
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| 107 | }
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| 108 |
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| 109 | /**
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| 110 | * Returns O-flag.
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| 111 | *
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| 112 | * @return bOFlag O-flag
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| 113 | */
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| 114 | public boolean getOFlag() {
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| 115 | return bOFlag;
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| 116 | }
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| 117 |
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| 118 | /**
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| 119 | * Returns T-flag.
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| 120 | *
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| 121 | * @return bTFlag T-flag
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| 122 | */
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| 123 | public boolean getTFlag() {
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| 124 | return bTFlag;
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| 125 | }
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| 126 |
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| 127 | /**
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| 128 | * Returns E-flag.
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| 129 | *
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| 130 | * @return bEFlag E-flag
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| 131 | */
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| 132 | public boolean getEFlag() {
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| 133 | return bEFlag;
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| 134 | }
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| 135 |
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| 136 | /**
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| 137 | * Returns B-flag.
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| 138 | *
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| 139 | * @return bBFlag B-flag
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| 140 | */
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| 141 | public boolean getBFlag() {
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| 142 | return bBFlag;
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| 143 | }
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| 144 |
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| 145 | @Override
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| 146 | public PcepVersion getVersion() {
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| 147 | return PcepVersion.PCEP_1;
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| 148 | }
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| 149 |
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| 150 | @Override
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| 151 | public short getType() {
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| 152 | return TYPE;
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| 153 | }
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| 154 |
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| 155 | @Override
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| 156 | public short getLength() {
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| 157 | return LENGTH;
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| 158 | }
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| 159 |
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| 160 | @Override
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| 161 | public int hashCode() {
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| 162 | if (isRawValueSet) {
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| 163 | return Objects.hash(rawValue);
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| 164 | } else {
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| 165 | return Objects.hash(bOFlag, bTFlag, bEFlag, bBFlag);
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| 166 | }
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| 167 | }
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| 168 |
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| 169 | @Override
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| 170 | public boolean equals(Object obj) {
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| 171 | if (this == obj) {
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| 172 | return true;
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| 173 | }
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| 174 | if (obj instanceof NodeFlagBitsTlv) {
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| 175 | NodeFlagBitsTlv other = (NodeFlagBitsTlv) obj;
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| 176 | if (isRawValueSet) {
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Phaneendra Manda | 5518067 | 2015-08-25 23:42:55 +0530 | [diff] [blame^] | 177 | return Objects.equals(this.rawValue, other.rawValue);
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| 178 | } else {
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Mahesh Poojary S | 5afd06c | 2015-08-21 14:51:04 +0530 | [diff] [blame] | 179 | return Objects.equals(this.bOFlag, other.bOFlag) && Objects.equals(this.bTFlag, other.bTFlag)
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| 180 | && Objects.equals(this.bEFlag, other.bEFlag) && Objects.equals(this.bBFlag, other.bBFlag);
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Mahesh Poojary S | 5afd06c | 2015-08-21 14:51:04 +0530 | [diff] [blame] | 181 | }
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| 182 | }
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| 183 | return false;
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| 184 | }
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| 185 |
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| 186 | @Override
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| 187 | public int write(ChannelBuffer c) {
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| 188 | int iLenStartIndex = c.writerIndex();
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| 189 | c.writeShort(TYPE);
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| 190 | c.writeShort(LENGTH);
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| 191 | if (isRawValueSet) {
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| 192 | c.writeByte(rawValue);
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| 193 | } else {
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| 194 | byte temp = 0;
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| 195 | if (bOFlag) {
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| 196 | temp = (byte) (temp | OFLAG_SET);
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| 197 | }
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| 198 | if (bTFlag) {
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| 199 | temp = (byte) (temp | TFLAG_SET);
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| 200 | }
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| 201 | if (bEFlag) {
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| 202 | temp = (byte) (temp | EFLAG_SET);
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| 203 | }
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| 204 | if (bBFlag) {
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| 205 | temp = (byte) (temp | BFLAG_SET);
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| 206 | }
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| 207 | c.writeByte(temp);
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| 208 | }
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| 209 | return c.writerIndex() - iLenStartIndex;
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| 210 | }
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| 211 |
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| 212 | /**
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| 213 | * Reads the channel buffer and returns object of NodeFlagBitsTlv.
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| 214 | *
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| 215 | * @param c input channel buffer
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| 216 | * @return object of NodeFlagBitsTlv
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| 217 | */
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| 218 | public static PcepValueType read(ChannelBuffer c) {
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| 219 |
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| 220 | return NodeFlagBitsTlv.of(c.readByte());
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| 221 | }
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| 222 |
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| 223 | @Override
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| 224 | public String toString() {
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| 225 | return MoreObjects.toStringHelper(getClass()).add("Type", TYPE).add("Length", LENGTH)
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| 226 | .add("OFlag", (bOFlag) ? 1 : 0).add("TFlag", (bTFlag) ? 1 : 0).add("EFlag", (bEFlag) ? 1 : 0)
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| 227 | .add("BFlag", (bBFlag) ? 1 : 0).toString();
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| 228 | }
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| 229 | }
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