2 * Copyright (c) 2013 Pantheon Technologies s.r.o. and others. All rights reserved.
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4 * This program and the accompanying materials are made available under the
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5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
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6 * and is available at http://www.eclipse.org/legal/epl-v10.html
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8 package org.opendaylight.openflowjava.protocol.impl.deserialization.match;
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10 import io.netty.buffer.ByteBuf;
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12 import org.opendaylight.openflowjava.protocol.api.extensibility.HeaderDeserializer;
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13 import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;
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14 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.MatchField;
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15 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.OxmClassBase;
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16 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.oxm.fields.grouping.MatchEntries;
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17 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.oxm.fields.grouping.MatchEntriesBuilder;
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20 * @author michal.polkorab
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23 public abstract class AbstractOxmMatchEntryDeserializer implements HeaderDeserializer<MatchEntries> {
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26 public MatchEntries deserializeHeader(ByteBuf input) {
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27 MatchEntriesBuilder builder = processHeader(getOxmClass(), getOxmField(), input);
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28 return builder.build();
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32 * @return oxm_field class
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34 protected abstract Class<? extends MatchField> getOxmField();
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37 * @return oxm_class class
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39 protected abstract Class<? extends OxmClassBase> getOxmClass();
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42 * Prepares match entry header - sets oxm_class, oxm_field, hasMask
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43 * + sets the buffer.readerIndex() to the end of match entry
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44 * - where augmentation starts
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45 * @param oxmClass oxm class type
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46 * @param oxmField oxm field type
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47 * @param input input bytebuf
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48 * @return MatchEntriesBuilder which can be filled with MatchEntry augmentation
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50 protected MatchEntriesBuilder processHeader(Class<? extends OxmClassBase> oxmClass,
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51 Class<? extends MatchField> oxmField, ByteBuf input) {
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52 MatchEntriesBuilder builder = new MatchEntriesBuilder();
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53 builder.setOxmClass(oxmClass);
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54 // skip oxm_class (provided)
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55 input.skipBytes(EncodeConstants.SIZE_OF_SHORT_IN_BYTES);
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56 builder.setOxmMatchField(oxmField);
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57 boolean hasMask = (input.readUnsignedByte() & 1) != 0;
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58 builder.setHasMask(hasMask);
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59 // skip match entry length - not needed
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60 input.skipBytes(EncodeConstants.SIZE_OF_BYTE_IN_BYTES);
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