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A fork of the Apache Cassandra Project ready to embed Elasticsearch.
/*
* 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.serializers;
import java.nio.ByteBuffer;
import java.util.LinkedHashMap;
import java.util.Map.Entry;
import org.apache.cassandra.utils.ByteBufferUtil;
public class UserTypeSerializer extends BytesSerializer
{
public final LinkedHashMap> fields;
public UserTypeSerializer(LinkedHashMap> fields)
{
this.fields = fields;
}
@Override
public void validate(ByteBuffer bytes) throws MarshalException
{
ByteBuffer input = bytes.duplicate();
int i = 0;
for (Entry> entry : fields.entrySet())
{
// we allow the input to have less fields than declared so as to support field addition.
if (!input.hasRemaining())
return;
if (input.remaining() < 4)
throw new MarshalException(String.format("Not enough bytes to read size of %dth field %s", i, entry.getKey()));
int size = input.getInt();
// size < 0 means null value
if (size < 0)
continue;
if (input.remaining() < size)
throw new MarshalException(String.format("Not enough bytes to read %dth field %s", i, entry.getKey()));
ByteBuffer field = ByteBufferUtil.readBytes(input, size);
entry.getValue().validate(field);
i++;
}
// We're allowed to get less fields than declared, but not more
if (input.hasRemaining())
throw new MarshalException("Invalid remaining data after end of UDT value");
}
}