| /* |
| * 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.cassandra.db.marshal; |
| |
| import java.nio.ByteBuffer; |
| |
| import org.apache.cassandra.cql3.CQL3Type; |
| import org.apache.cassandra.cql3.Constants; |
| import org.apache.cassandra.cql3.Term; |
| import org.apache.cassandra.serializers.TypeSerializer; |
| import org.apache.cassandra.serializers.Int32Serializer; |
| import org.apache.cassandra.serializers.MarshalException; |
| import org.apache.cassandra.utils.ByteBufferUtil; |
| |
| public class Int32Type extends AbstractType<Integer> |
| { |
| public static final Int32Type instance = new Int32Type(); |
| |
| Int32Type() |
| { |
| super(ComparisonType.CUSTOM); |
| } // singleton |
| |
| public boolean isEmptyValueMeaningless() |
| { |
| return true; |
| } |
| |
| public int compareCustom(ByteBuffer o1, ByteBuffer o2) |
| { |
| if (!o1.hasRemaining() || !o2.hasRemaining()) |
| return o1.hasRemaining() ? 1 : o2.hasRemaining() ? -1 : 0; |
| |
| int diff = o1.get(o1.position()) - o2.get(o2.position()); |
| if (diff != 0) |
| return diff; |
| |
| return ByteBufferUtil.compareUnsigned(o1, o2); |
| } |
| |
| public ByteBuffer fromString(String source) throws MarshalException |
| { |
| // Return an empty ByteBuffer for an empty string. |
| if (source.isEmpty()) |
| return ByteBufferUtil.EMPTY_BYTE_BUFFER; |
| |
| int int32Type; |
| |
| try |
| { |
| int32Type = Integer.parseInt(source); |
| } |
| catch (Exception e) |
| { |
| throw new MarshalException(String.format("Unable to make int from '%s'", source), e); |
| } |
| |
| return decompose(int32Type); |
| } |
| |
| @Override |
| public Term fromJSONObject(Object parsed) throws MarshalException |
| { |
| try |
| { |
| if (parsed instanceof String) |
| return new Constants.Value(fromString((String) parsed)); |
| |
| Number parsedNumber = (Number) parsed; |
| if (!(parsedNumber instanceof Integer)) |
| throw new MarshalException(String.format("Expected an int value, but got a %s: %s", parsed.getClass().getSimpleName(), parsed)); |
| |
| return new Constants.Value(getSerializer().serialize(parsedNumber.intValue())); |
| } |
| catch (ClassCastException exc) |
| { |
| throw new MarshalException(String.format( |
| "Expected an int value, but got a %s: %s", parsed.getClass().getSimpleName(), parsed)); |
| } |
| } |
| |
| @Override |
| public String toJSONString(ByteBuffer buffer, int protocolVersion) |
| { |
| return getSerializer().deserialize(buffer).toString(); |
| } |
| |
| public CQL3Type asCQL3Type() |
| { |
| return CQL3Type.Native.INT; |
| } |
| |
| public TypeSerializer<Integer> getSerializer() |
| { |
| return Int32Serializer.instance; |
| } |
| |
| @Override |
| protected int valueLengthIfFixed() |
| { |
| return 4; |
| } |
| } |