| /* |
| * 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.BytesSerializer; |
| import org.apache.cassandra.serializers.MarshalException; |
| import org.apache.cassandra.transport.ProtocolVersion; |
| import org.apache.cassandra.utils.ByteBufferUtil; |
| import org.apache.cassandra.utils.Hex; |
| |
| public class BytesType extends AbstractType<ByteBuffer> |
| { |
| public static final BytesType instance = new BytesType(); |
| |
| BytesType() {super(ComparisonType.BYTE_ORDER);} // singleton |
| |
| public ByteBuffer fromString(String source) |
| { |
| try |
| { |
| return ByteBuffer.wrap(Hex.hexToBytes(source)); |
| } |
| catch (NumberFormatException e) |
| { |
| throw new MarshalException(String.format("cannot parse '%s' as hex bytes", source), e); |
| } |
| } |
| |
| @Override |
| public Term fromJSONObject(Object parsed) throws MarshalException |
| { |
| try |
| { |
| String parsedString = (String) parsed; |
| if (!parsedString.startsWith("0x")) |
| throw new MarshalException(String.format("String representation of blob is missing 0x prefix: %s", parsedString)); |
| |
| return new Constants.Value(BytesType.instance.fromString(parsedString.substring(2))); |
| } |
| catch (ClassCastException | MarshalException exc) |
| { |
| throw new MarshalException(String.format("Value '%s' is not a valid blob representation: %s", parsed, exc.getMessage())); |
| } |
| } |
| |
| @Override |
| public String toJSONString(ByteBuffer buffer, ProtocolVersion protocolVersion) |
| { |
| return "\"0x" + ByteBufferUtil.bytesToHex(buffer) + '"'; |
| } |
| |
| @Override |
| public boolean isCompatibleWith(AbstractType<?> previous) |
| { |
| // Both asciiType and utf8Type really use bytes comparison and |
| // bytesType validate everything, so it is compatible with the former. |
| return this == previous || previous == AsciiType.instance || previous == UTF8Type.instance; |
| } |
| |
| @Override |
| public boolean isValueCompatibleWithInternal(AbstractType<?> otherType) |
| { |
| // BytesType can read anything |
| return true; |
| } |
| |
| public CQL3Type asCQL3Type() |
| { |
| return CQL3Type.Native.BLOB; |
| } |
| |
| public TypeSerializer<ByteBuffer> getSerializer() |
| { |
| return BytesSerializer.instance; |
| } |
| } |