| /* |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| package org.apache.qpid.proton.codec; |
| |
| import org.apache.qpid.proton.amqp.UnsignedLong; |
| |
| import java.util.Arrays; |
| import java.util.Collection; |
| |
| public class UnsignedLongType extends AbstractPrimitiveType<UnsignedLong> |
| { |
| public static interface UnsignedLongEncoding extends PrimitiveTypeEncoding<UnsignedLong> |
| { |
| |
| } |
| |
| private UnsignedLongEncoding _unsignedLongEncoding; |
| private UnsignedLongEncoding _smallUnsignedLongEncoding; |
| private UnsignedLongEncoding _zeroUnsignedLongEncoding; |
| |
| |
| UnsignedLongType(final EncoderImpl encoder, final DecoderImpl decoder) |
| { |
| _unsignedLongEncoding = new AllUnsignedLongEncoding(encoder, decoder); |
| _smallUnsignedLongEncoding = new SmallUnsignedLongEncoding(encoder, decoder); |
| _zeroUnsignedLongEncoding = new ZeroUnsignedLongEncoding(encoder, decoder); |
| encoder.register(UnsignedLong.class, this); |
| decoder.register(this); |
| } |
| |
| public Class<UnsignedLong> getTypeClass() |
| { |
| return UnsignedLong.class; |
| } |
| |
| public UnsignedLongEncoding getEncoding(final UnsignedLong val) |
| { |
| long l = val.longValue(); |
| return l == 0L |
| ? _zeroUnsignedLongEncoding |
| : (l >= 0 && l <= 255L) ? _smallUnsignedLongEncoding : _unsignedLongEncoding; |
| } |
| |
| public void fastWrite(EncoderImpl encoder, UnsignedLong value) |
| { |
| long longValue = value.longValue(); |
| if (longValue == 0) |
| { |
| encoder.writeRaw(EncodingCodes.ULONG0); |
| } |
| else if (longValue > 0 && longValue <= 255) |
| { |
| encoder.writeRaw(EncodingCodes.SMALLULONG); |
| encoder.writeRaw((byte)longValue); |
| } |
| else |
| { |
| encoder.writeRaw(EncodingCodes.ULONG); |
| encoder.writeRaw(longValue); |
| } |
| } |
| |
| public UnsignedLongEncoding getCanonicalEncoding() |
| { |
| return _unsignedLongEncoding; |
| } |
| |
| public Collection<UnsignedLongEncoding> getAllEncodings() |
| { |
| return Arrays.asList(_zeroUnsignedLongEncoding, _smallUnsignedLongEncoding, _unsignedLongEncoding); |
| } |
| |
| |
| private class AllUnsignedLongEncoding |
| extends FixedSizePrimitiveTypeEncoding<UnsignedLong> |
| implements UnsignedLongEncoding |
| { |
| |
| public AllUnsignedLongEncoding(final EncoderImpl encoder, final DecoderImpl decoder) |
| { |
| super(encoder, decoder); |
| } |
| |
| @Override |
| protected int getFixedSize() |
| { |
| return 8; |
| } |
| |
| @Override |
| public byte getEncodingCode() |
| { |
| return EncodingCodes.ULONG; |
| } |
| |
| public UnsignedLongType getType() |
| { |
| return UnsignedLongType.this; |
| } |
| |
| public void writeValue(final UnsignedLong val) |
| { |
| getEncoder().writeRaw(val.longValue()); |
| } |
| |
| |
| public boolean encodesSuperset(final TypeEncoding<UnsignedLong> encoding) |
| { |
| return (getType() == encoding.getType()); |
| } |
| |
| public UnsignedLong readValue() |
| { |
| return UnsignedLong.valueOf(getDecoder().readRawLong()); |
| } |
| } |
| |
| private class SmallUnsignedLongEncoding |
| extends FixedSizePrimitiveTypeEncoding<UnsignedLong> |
| implements UnsignedLongEncoding |
| { |
| public SmallUnsignedLongEncoding(final EncoderImpl encoder, final DecoderImpl decoder) |
| { |
| super(encoder, decoder); |
| } |
| |
| @Override |
| public byte getEncodingCode() |
| { |
| return EncodingCodes.SMALLULONG; |
| } |
| |
| @Override |
| protected int getFixedSize() |
| { |
| return 1; |
| } |
| |
| |
| public UnsignedLongType getType() |
| { |
| return UnsignedLongType.this; |
| } |
| |
| public void writeValue(final UnsignedLong val) |
| { |
| getEncoder().writeRaw((byte)val.longValue()); |
| } |
| |
| public boolean encodesSuperset(final TypeEncoding<UnsignedLong> encoder) |
| { |
| return encoder == this || encoder instanceof ZeroUnsignedLongEncoding; |
| } |
| |
| public UnsignedLong readValue() |
| { |
| return UnsignedLong.valueOf(((long)getDecoder().readRawByte())&0xffl); |
| } |
| } |
| |
| |
| private class ZeroUnsignedLongEncoding |
| extends FixedSizePrimitiveTypeEncoding<UnsignedLong> |
| implements UnsignedLongEncoding |
| { |
| public ZeroUnsignedLongEncoding(final EncoderImpl encoder, final DecoderImpl decoder) |
| { |
| super(encoder, decoder); |
| } |
| |
| @Override |
| public byte getEncodingCode() |
| { |
| return EncodingCodes.ULONG0; |
| } |
| |
| @Override |
| protected int getFixedSize() |
| { |
| return 0; |
| } |
| |
| |
| public UnsignedLongType getType() |
| { |
| return UnsignedLongType.this; |
| } |
| |
| public void writeValue(final UnsignedLong val) |
| { |
| } |
| |
| public boolean encodesSuperset(final TypeEncoding<UnsignedLong> encoder) |
| { |
| return encoder == this; |
| } |
| |
| public UnsignedLong readValue() |
| { |
| return UnsignedLong.ZERO; |
| } |
| } |
| } |