| /* |
| * |
| * 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 java.math.BigInteger; |
| import java.util.Arrays; |
| import java.util.Collection; |
| |
| public class BigIntegerType extends AbstractPrimitiveType<BigInteger> { |
| |
| public static interface BigIntegerEncoding extends PrimitiveTypeEncoding<BigInteger> |
| { |
| void write(BigInteger l); |
| void writeValue(BigInteger l); |
| public BigInteger readPrimitiveValue(); |
| } |
| |
| private static final BigInteger BIG_BYTE_MIN = BigInteger.valueOf(Byte.MIN_VALUE); |
| private static final BigInteger BIG_BYTE_MAX = BigInteger.valueOf(Byte.MAX_VALUE); |
| private static final BigInteger BIG_LONG_MIN = BigInteger.valueOf(Long.MIN_VALUE); |
| private static final BigInteger BIG_LONG_MAX = BigInteger.valueOf(Long.MAX_VALUE); |
| |
| private BigIntegerEncoding _BigIntegerEncoding; |
| private BigIntegerEncoding _smallBigIntegerEncoding; |
| |
| BigIntegerType(final EncoderImpl encoder, final DecoderImpl decoder) |
| { |
| _BigIntegerEncoding = new AllBigIntegerEncoding(encoder, decoder); |
| _smallBigIntegerEncoding = new SmallBigIntegerEncoding(encoder, decoder); |
| encoder.register(BigInteger.class, this); |
| } |
| |
| public Class<BigInteger> getTypeClass() |
| { |
| return BigInteger.class; |
| } |
| |
| public BigIntegerEncoding getEncoding(final BigInteger l) |
| { |
| return (l.compareTo(BIG_BYTE_MIN) >= 0 && l.compareTo(BIG_BYTE_MAX) <= 0) ? _smallBigIntegerEncoding : _BigIntegerEncoding; |
| } |
| |
| |
| public BigIntegerEncoding getCanonicalEncoding() |
| { |
| return _BigIntegerEncoding; |
| } |
| |
| public Collection<BigIntegerEncoding> getAllEncodings() |
| { |
| return Arrays.asList(_smallBigIntegerEncoding, _BigIntegerEncoding); |
| } |
| |
| private long longValueExact(final BigInteger val) { |
| if (val.compareTo(BIG_LONG_MIN) < 0 || val.compareTo(BIG_LONG_MAX) > 0) { |
| throw new ArithmeticException("cannot encode BigInteger not representable as long"); |
| } |
| return val.longValue(); |
| } |
| |
| private class AllBigIntegerEncoding extends FixedSizePrimitiveTypeEncoding<BigInteger> implements BigIntegerEncoding |
| { |
| |
| public AllBigIntegerEncoding(final EncoderImpl encoder, final DecoderImpl decoder) |
| { |
| super(encoder, decoder); |
| } |
| |
| @Override |
| protected int getFixedSize() |
| { |
| return 8; |
| } |
| |
| @Override |
| public byte getEncodingCode() |
| { |
| return EncodingCodes.LONG; |
| } |
| |
| public BigIntegerType getType() |
| { |
| return BigIntegerType.this; |
| } |
| |
| public void writeValue(final BigInteger val) |
| { |
| getEncoder().writeRaw(longValueExact(val)); |
| } |
| |
| public void write(final BigInteger l) |
| { |
| writeConstructor(); |
| getEncoder().writeRaw(longValueExact(l)); |
| |
| } |
| |
| public boolean encodesSuperset(final TypeEncoding<BigInteger> encoding) |
| { |
| return (getType() == encoding.getType()); |
| } |
| |
| public BigInteger readValue() |
| { |
| return readPrimitiveValue(); |
| } |
| |
| public BigInteger readPrimitiveValue() |
| { |
| return BigInteger.valueOf(getDecoder().readLong()); |
| } |
| |
| |
| @Override |
| public boolean encodesJavaPrimitive() |
| { |
| return true; |
| } |
| } |
| |
| private class SmallBigIntegerEncoding extends FixedSizePrimitiveTypeEncoding<BigInteger> implements BigIntegerEncoding |
| { |
| public SmallBigIntegerEncoding(final EncoderImpl encoder, final DecoderImpl decoder) |
| { |
| super(encoder, decoder); |
| } |
| |
| @Override |
| public byte getEncodingCode() |
| { |
| return EncodingCodes.SMALLLONG; |
| } |
| |
| @Override |
| protected int getFixedSize() |
| { |
| return 1; |
| } |
| |
| public void write(final BigInteger l) |
| { |
| writeConstructor(); |
| getEncoder().writeRaw(l.byteValue()); |
| } |
| |
| public BigInteger readPrimitiveValue() |
| { |
| return BigInteger.valueOf(getDecoder().readRawByte()); |
| } |
| |
| public BigIntegerType getType() |
| { |
| return BigIntegerType.this; |
| } |
| |
| public void writeValue(final BigInteger val) |
| { |
| getEncoder().writeRaw(val.byteValue()); |
| } |
| |
| public boolean encodesSuperset(final TypeEncoding<BigInteger> encoder) |
| { |
| return encoder == this; |
| } |
| |
| public BigInteger readValue() |
| { |
| return readPrimitiveValue(); |
| } |
| |
| |
| @Override |
| public boolean encodesJavaPrimitive() |
| { |
| return true; |
| } |
| } |
| } |