| /* |
| * 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.BooleanSerializer; |
| import org.apache.cassandra.serializers.MarshalException; |
| import org.apache.cassandra.transport.ProtocolVersion; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class BooleanType extends AbstractType<Boolean> |
| { |
| private static final Logger logger = LoggerFactory.getLogger(BooleanType.class); |
| |
| public static final BooleanType instance = new BooleanType(); |
| |
| BooleanType() {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; |
| |
| // False is 0, True is anything else, makes False sort before True. |
| byte b1 = o1.get(o1.position()); |
| byte b2 = o2.get(o2.position()); |
| if (b1 == 0) |
| return b2 == 0 ? 0 : -1; |
| return b2 == 0 ? 1 : 0; |
| } |
| |
| public ByteBuffer fromString(String source) throws MarshalException |
| { |
| |
| if (source.isEmpty()|| source.equalsIgnoreCase(Boolean.FALSE.toString())) |
| return decompose(false); |
| |
| if (source.equalsIgnoreCase(Boolean.TRUE.toString())) |
| return decompose(true); |
| |
| throw new MarshalException(String.format("Unable to make boolean from '%s'", source)); |
| } |
| |
| @Override |
| public Term fromJSONObject(Object parsed) throws MarshalException |
| { |
| if (parsed instanceof String) |
| return new Constants.Value(fromString((String) parsed)); |
| else if (!(parsed instanceof Boolean)) |
| throw new MarshalException(String.format( |
| "Expected a boolean value, but got a %s: %s", parsed.getClass().getSimpleName(), parsed)); |
| |
| return new Constants.Value(getSerializer().serialize((Boolean) parsed)); |
| } |
| |
| @Override |
| public String toJSONString(ByteBuffer buffer, ProtocolVersion protocolVersion) |
| { |
| return getSerializer().deserialize(buffer).toString(); |
| } |
| |
| public CQL3Type asCQL3Type() |
| { |
| return CQL3Type.Native.BOOLEAN; |
| } |
| |
| public TypeSerializer<Boolean> getSerializer() |
| { |
| return BooleanSerializer.instance; |
| } |
| |
| @Override |
| protected int valueLengthIfFixed() |
| { |
| return 1; |
| } |
| } |