Bharat saraswal | c6f81bc | 2015-08-21 16:14:56 +0530 | [diff] [blame] | 1 | /*
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Phaneendra Manda | 5518067 | 2015-08-25 23:42:55 +0530 | [diff] [blame] | 2 | * Copyright 2015 Open Networking Laboratory
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Bharat saraswal | c6f81bc | 2015-08-21 16:14:56 +0530 | [diff] [blame] | 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.protocol.ver1;
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| 17 |
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| 18 | import org.jboss.netty.buffer.ChannelBuffer;
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| 19 | import org.onosproject.pcepio.exceptions.PcepParseException;
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| 20 | import org.onosproject.pcepio.protocol.PcepInterLayerObject;
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| 21 | import org.onosproject.pcepio.types.PcepObjectHeader;
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| 22 | import org.slf4j.Logger;
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| 23 | import org.slf4j.LoggerFactory;
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| 24 |
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| 25 | import com.google.common.base.MoreObjects;
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| 26 |
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Phanendra Manda | 51fb9c2 | 2015-09-01 16:17:41 +0530 | [diff] [blame] | 27 | /**
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| 28 | * Provides PCEP inter layer object.
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Bharat saraswal | c6f81bc | 2015-08-21 16:14:56 +0530 | [diff] [blame] | 29 | */
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| 30 | public class PcepInterLayerObjectVer1 implements PcepInterLayerObject {
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| 31 |
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Phanendra Manda | 51fb9c2 | 2015-09-01 16:17:41 +0530 | [diff] [blame] | 32 | /*
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| 33 | * 0 1 2 3
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| 34 | 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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| 35 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 36 | | Reserved |N|I|
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| 37 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| 38 | */
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Bharat saraswal | c6f81bc | 2015-08-21 16:14:56 +0530 | [diff] [blame] | 39 | protected static final Logger log = LoggerFactory.getLogger(PcepInterLayerObjectVer1.class);
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| 40 |
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| 41 | public static final byte INTER_LAYER_OBJ_TYPE = 1;
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| 42 | public static final byte INTER_LAYER_OBJ_CLASS = 18;
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| 43 | public static final byte INTER_LAYER_OBJECT_VERSION = 1;
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| 44 | public static final short INTER_LAYER_OBJ_MINIMUM_LENGTH = 8;
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| 45 | public static final boolean DEFAULT_IFLAG = false;
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| 46 | public static final boolean DEFAULT_NFLAG = false;
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| 47 | public static final int OBJECT_HEADER_LENGTH = 4;
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| 48 | public static final int NFLAG_SHIFT_VALUE = 0x02;
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| 49 | public static final int IFLAG_SHIFT_VALUE = 0x01;
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| 50 | public static final int FLAGS_SET_VALUE = 1;
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| 51 |
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| 52 | static final PcepObjectHeader DEFAULT_INTER_LAYER_OBJECT_HEADER = new PcepObjectHeader(INTER_LAYER_OBJ_CLASS,
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| 53 | INTER_LAYER_OBJ_TYPE, PcepObjectHeader.REQ_OBJ_OPTIONAL_PROCESS, PcepObjectHeader.RSP_OBJ_PROCESSED,
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| 54 | INTER_LAYER_OBJ_MINIMUM_LENGTH);
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| 55 |
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| 56 | private PcepObjectHeader interLayerObjHeader;
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| 57 | private boolean bNFlag;
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| 58 | private boolean bIFlag;
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| 59 |
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| 60 | /**
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| 61 | * Constructor to initialize all parameters for Pcep Inter Layer Object.
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| 62 | *
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| 63 | * @param interLayerObjHeader inter layer object header
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| 64 | * @param bNFlag N flag
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| 65 | * @param bIFlag I flag
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| 66 | */
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| 67 | public PcepInterLayerObjectVer1(PcepObjectHeader interLayerObjHeader, boolean bNFlag, boolean bIFlag) {
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| 68 |
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| 69 | this.interLayerObjHeader = interLayerObjHeader;
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| 70 | this.bNFlag = bNFlag;
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| 71 | this.bIFlag = bIFlag;
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| 72 | }
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| 73 |
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| 74 | /**
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| 75 | * Sets Object Header.
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| 76 | *
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| 77 | * @param obj object header
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| 78 | */
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| 79 | public void setInterLayerObjHeader(PcepObjectHeader obj) {
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| 80 | this.interLayerObjHeader = obj;
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| 81 | }
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| 82 |
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| 83 | @Override
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| 84 | public void setbNFlag(boolean bNFlag) {
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| 85 | this.bNFlag = bNFlag;
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| 86 | }
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| 87 |
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| 88 | @Override
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| 89 | public void setbIFlag(boolean bIFlag) {
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| 90 | this.bIFlag = bIFlag;
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| 91 | }
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| 92 |
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| 93 | /**
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| 94 | * Returns object header.
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| 95 | *
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| 96 | * @return inter Layer Object Header
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| 97 | */
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| 98 | public PcepObjectHeader getInterLayerObjHeader() {
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| 99 | return this.interLayerObjHeader;
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| 100 | }
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| 101 |
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| 102 | @Override
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| 103 | public boolean getbNFlag() {
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| 104 | return this.bNFlag;
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| 105 | }
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| 106 |
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| 107 | @Override
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| 108 | public boolean getbIFlag() {
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| 109 | return this.bIFlag;
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| 110 | }
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| 111 |
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| 112 | /**
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| 113 | * Reads channel buffer and returns object of PcepInterLayerObject.
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| 114 | *
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| 115 | * @param cb of type channel buffer
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| 116 | * @return object of PcepInterLayerObject
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| 117 | * @throws PcepParseException when fails to read from channel buffer
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| 118 | */
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| 119 | public static PcepInterLayerObject read(ChannelBuffer cb) throws PcepParseException {
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| 120 |
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| 121 | PcepObjectHeader interLayerObjHeader;
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| 122 | boolean bNFlag;
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| 123 | boolean bIFlag;
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| 124 |
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| 125 | interLayerObjHeader = PcepObjectHeader.read(cb);
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| 126 |
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| 127 | //take only InterLayerObject buffer.
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| 128 | ChannelBuffer tempCb = cb.readBytes(interLayerObjHeader.getObjLen() - OBJECT_HEADER_LENGTH);
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| 129 |
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| 130 | int iTemp = tempCb.readInt();
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| 131 | bIFlag = ((iTemp & (byte) IFLAG_SHIFT_VALUE) == FLAGS_SET_VALUE) ? true : false;
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| 132 | bNFlag = ((iTemp & (byte) NFLAG_SHIFT_VALUE) == FLAGS_SET_VALUE) ? true : false;
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| 133 |
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| 134 | return new PcepInterLayerObjectVer1(interLayerObjHeader, bNFlag, bIFlag);
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| 135 | }
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| 136 |
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| 137 | @Override
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| 138 | public int write(ChannelBuffer cb) throws PcepParseException {
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| 139 |
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| 140 | //write Object header
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| 141 | int objStartIndex = cb.writerIndex();
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| 142 |
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| 143 | int objLenIndex = interLayerObjHeader.write(cb);
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| 144 |
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| 145 | if (objLenIndex <= 0) {
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| 146 | throw new PcepParseException(" ObjectLength Index is " + objLenIndex);
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| 147 | }
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| 148 |
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| 149 | int iTemp = 0;
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| 150 |
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| 151 | if (bIFlag) {
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| 152 | iTemp = iTemp | (byte) IFLAG_SHIFT_VALUE;
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| 153 | }
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| 154 | if (bNFlag) {
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| 155 | iTemp = iTemp | (byte) NFLAG_SHIFT_VALUE;
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| 156 | }
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| 157 |
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| 158 | cb.writeInt(iTemp);
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| 159 |
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| 160 | //Update object length now
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| 161 | int length = cb.writerIndex() - objStartIndex;
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| 162 | //will be helpful during print().
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| 163 | interLayerObjHeader.setObjLen((short) length);
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| 164 | cb.setShort(objLenIndex, (short) length);
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| 165 |
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| 166 | objLenIndex = cb.writerIndex();
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| 167 | return objLenIndex;
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| 168 | }
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| 169 |
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| 170 | /**
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| 171 | * Builder class for PCEP inter layer object.
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| 172 | */
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| 173 | public static class Builder implements PcepInterLayerObject.Builder {
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| 174 |
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| 175 | private boolean bIsHeaderSet = false;
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| 176 | private boolean bIsNFlagset = false;
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| 177 | private boolean bIsIFlagset = false;
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| 178 |
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| 179 | private PcepObjectHeader interLayerObjHeader;
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| 180 | private boolean bNFlag;
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| 181 | private boolean bIFlag;
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| 182 |
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| 183 | private boolean bIsPFlagSet = false;
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| 184 | private boolean bPFalg;
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| 185 |
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| 186 | private boolean bIsIFlagSet = false;
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| 187 | private boolean iFlag;
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| 188 |
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| 189 | @Override
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| 190 | public PcepInterLayerObject build() {
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| 191 | PcepObjectHeader interLayerObjHeader = this.bIsHeaderSet ? this.interLayerObjHeader
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| 192 | : DEFAULT_INTER_LAYER_OBJECT_HEADER;
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| 193 |
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| 194 | boolean bNFlag = this.bIsNFlagset ? this.bNFlag : DEFAULT_NFLAG;
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| 195 | boolean bIFlag = this.bIsIFlagset ? this.bIFlag : DEFAULT_IFLAG;
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| 196 |
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| 197 | if (bIsPFlagSet) {
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| 198 | interLayerObjHeader.setPFlag(bPFalg);
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| 199 | }
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| 200 |
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| 201 | if (bIsIFlagSet) {
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| 202 | interLayerObjHeader.setIFlag(iFlag);
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| 203 | }
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| 204 | return new PcepInterLayerObjectVer1(interLayerObjHeader, bNFlag, bIFlag);
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| 205 | }
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| 206 |
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| 207 | @Override
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| 208 | public PcepObjectHeader getInterLayerObjHeader() {
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| 209 | return this.interLayerObjHeader;
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| 210 | }
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| 211 |
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| 212 | @Override
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| 213 | public Builder setInterLayerObjHeader(PcepObjectHeader obj) {
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| 214 | this.interLayerObjHeader = obj;
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| 215 | this.bIsHeaderSet = true;
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| 216 | return this;
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| 217 | }
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| 218 |
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| 219 | @Override
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| 220 | public boolean getbNFlag() {
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| 221 | return this.bNFlag;
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| 222 | }
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| 223 |
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| 224 | @Override
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| 225 | public Builder setbNFlag(boolean value) {
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| 226 | this.bNFlag = value;
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| 227 | this.bIsNFlagset = true;
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| 228 | return this;
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| 229 | }
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| 230 |
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| 231 | @Override
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| 232 | public boolean getbIFlag() {
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| 233 | return this.bIFlag;
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| 234 | }
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| 235 |
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| 236 | @Override
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| 237 | public Builder setbIFlag(boolean value) {
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| 238 | this.bIFlag = value;
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| 239 | this.bIsIFlagset = true;
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| 240 | return this;
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| 241 | }
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| 242 |
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| 243 | @Override
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| 244 | public Builder setPFlag(boolean value) {
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| 245 | this.bPFalg = value;
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| 246 | this.bIsPFlagSet = true;
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| 247 | return this;
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| 248 | }
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| 249 |
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| 250 | @Override
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| 251 | public Builder setIFlag(boolean value) {
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| 252 | this.iFlag = value;
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| 253 | this.bIsIFlagSet = true;
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| 254 | return this;
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| 255 | }
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| 256 | }
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| 257 |
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| 258 | @Override
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| 259 | public String toString() {
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| 260 | return MoreObjects.toStringHelper(getClass()).add("IFlag", bIFlag).add("NFlag", bNFlag).toString();
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| 261 | }
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| 262 | }
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