Examples of org.lilyproject.bytes.api.DataInput

org.lilyproject.bytes.api.DataInput
DataInput reads primitive types from a byte[] which has been encoded using the {@link DataOutput}
Every read call reads the next value from the underlying byte[].
The underlying byte[] can be larger than the part that the DataInput "views". All methods are relative to the view of the DataInput, except methods that refer to the "start position", which is the absolute position in the underlying byte[].

        dataOutput.writeUTF(string);
        dataOutput.writeVInt(Math.abs(i));
        dataOutput.writeVLong(Math.abs(l));


        byte[] data = dataOutput.toByteArray();
        DataInput dataInput = new DataInputImpl(data);
        Assert.assertEquals(b, dataInput.readBoolean());
        Assert.assertEquals(bytes[0], dataInput.readByte());
        Assert.assertArrayEquals(bytes, dataInput.readBytes(10));
        Assert.assertEquals(d, dataInput.readDouble(), 0.0001);
        Assert.assertEquals(f, dataInput.readFloat(), 0.0001);
        Assert.assertEquals(i, dataInput.readInt());
        Assert.assertEquals(l, dataInput.readLong());
        Assert.assertEquals(s, dataInput.readShort());
        Assert.assertEquals(string, dataInput.readUTF());
        Assert.assertEquals(Math.abs(i), dataInput.readVInt());
        Assert.assertEquals(Math.abs(l), dataInput.readVLong());
    }

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                    int length = dataInput.getSize();
                    dataInput.setPosition(length - 8);
                    int nrOfVariants = dataInput.readInt();
                    int masterRecordIdLength = dataInput.readInt();


                    DataInput masterRecordIdInput = new DataInputImpl((DataInputImpl)dataInput, position, masterRecordIdLength);
                    RecordId masterRecordId = decode(masterRecordIdInput, idGenerator);
                    dataInput.setPosition(masterRecordIdLength);


                    SortedMap<String, String> varProps = new TreeMap<String, String>();
                    for (int i = 0; i < nrOfVariants; i++) {

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        byte idType = dataInput.readByte();
        // Note: will throw arrayindexoutofbounds if id is not known
        IdType id = ID_TYPES[idType];


        DataInput[] splitted = id.factory.splitInMasterAndVariant(dataInput);
        DataInput masterIdInput = splitted[0];
        DataInput variantParamsInput = splitted[1];


        RecordId masterRecordId = id.factory.fromBytes(masterIdInput, this);


        if (variantParamsInput != null) {
            return new VariantRecordId(masterRecordId, variantParamsInput, this);

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    @Override
    public DataInput[] splitInMasterAndVariant(DataInput dataInput) {
        if (dataInput.getSize() - dataInput.getPosition() > UUID_LENGTH) {


            DataInput keyInput = new DataInputImpl(((DataInputImpl) dataInput), dataInput.getPosition(),
                    dataInput.getPosition() + 16);


            DataInput variantInput = new DataInputImpl(((DataInputImpl) dataInput), dataInput.getPosition() + 16,
                    dataInput.getSize() - 17);


            return new DataInput[]{keyInput, variantInput};
        } else {
            return new DataInput[]{dataInput, null};

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        int sepPos = dataInput.indexOf(VARIANT_SEPARATOR);


        if (sepPos == -1) {
            return new DataInput[]{dataInput, null};
        } else {
            DataInput keyInput =
                    new DataInputImpl(((DataInputImpl) dataInput), dataInput.getPosition(), sepPos - dataInput.getPosition());
            DataInput variantInput =
                    new DataInputImpl(((DataInputImpl) dataInput), sepPos + 1, dataInput.getSize() - (sepPos + 1));


            return new DataInput[]{keyInput, variantInput};
        }
    }

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    }


    public String toString() {
        if (string == null) {
            if (uuid == null) {
                DataInput dataInput = new DataInputImpl(bytes);
                this.uuid = new UUID(dataInput.readLong(), dataInput.readLong());
            }
            this.string = uuid.toString();
        }
        return string;
    }

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        DataOutput dataOutput = new DataOutputImpl();


        // Do a write and lets not get exceptions
        recordVT.write(createdRecord, dataOutput, new IdentityRecordStack());


        DataInput dataInput = new DataInputImpl(dataOutput.toByteArray());


        // Do a read and lets not get exceptions
        Record readRecord = recordVT.read(dataInput);


        assertEquals(createdRecord.getFields(), readRecord.getFields());

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        for (int i = 0; i < 1000; i++) {
            String string = randomUnicodeString();
            DataOutput dataOutput = new DataOutputImpl();
            dataOutput.writeUTF(string);
            byte[] bytes = dataOutput.toByteArray();
            DataInput dataInput = new DataInputImpl(bytes);
            String result = dataInput.readUTF();
            Assert.assertEquals(string, result);
        }
    }

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        for (int i = 0; i < 1000; i++) {
            String string = randomUnicodeString();
            DataOutput dataOutput = new DataOutputImpl();
            dataOutput.writeVUTF(string);
            byte[] bytes = dataOutput.toByteArray();
            DataInput dataInput = new DataInputImpl(bytes);
            String result = dataInput.readVUTF();
            Assert.assertEquals(string, result);
        }
    }

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        dataOutput.writeUTF(name);
        return dataOutput.toByteArray();
    }


    public static QName decodeName(byte[] bytes) {
        DataInput dataInput = new DataInputImpl(bytes);
        String namespace = dataInput.readUTF();
        String name = dataInput.readUTF();
        return new QName(namespace, name);
    }

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