Java tutorial
/* * Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved. * * This program and the accompanying materials are made available under the * terms of the Eclipse Public License v1.0 which accompanies this distribution, * and is available at http://www.eclipse.org/legal/epl-v10.html */ package org.opendaylight.protocol.rsvp.parser.impl.subobject; import static org.opendaylight.protocol.util.ByteBufWriteUtil.writeShort; import com.google.common.base.Preconditions; import io.netty.buffer.ByteBuf; import io.netty.buffer.Unpooled; import org.opendaylight.protocol.rsvp.parser.spi.RSVPParsingException; import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.AsNumber; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.AsNumberSubobject; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.basic.explicit.route.subobjects.subobject.type.AsNumberCase; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.basic.explicit.route.subobjects.subobject.type.AsNumberCaseBuilder; import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.rsvp.rev150820.basic.explicit.route.subobjects.subobject.type.as.number._case.AsNumberBuilder; public final class AsNumberCaseParser { private static final int CONTENT_LENGTH = 2; private AsNumberCaseParser() { throw new UnsupportedOperationException(); } public static AsNumberCase parseSubobject(final ByteBuf buffer) throws RSVPParsingException { Preconditions.checkArgument(buffer != null && buffer.isReadable(), "Array of bytes is mandatory. Can't be null or empty."); if (buffer.readableBytes() != CONTENT_LENGTH) { throw new RSVPParsingException("Wrong length of array of bytes. Passed: " + buffer.readableBytes() + "; Expected: " + CONTENT_LENGTH + "."); } return new AsNumberCaseBuilder() .setAsNumber( new AsNumberBuilder().setAsNumber(new AsNumber((long) buffer.readUnsignedShort())).build()) .build(); } public static ByteBuf serializeSubobject(final AsNumberCase asCase) { final AsNumberSubobject asNumber = asCase.getAsNumber(); final ByteBuf body = Unpooled.buffer(CONTENT_LENGTH); Preconditions.checkArgument(asNumber.getAsNumber() != null, "AsNumber is mandatory."); writeShort(asNumber.getAsNumber().getValue().shortValue(), body); return body; } }