/**
* 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.gora.cassandra.query;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.charset.CharacterCodingException;
import java.nio.charset.Charset;
import java.nio.charset.CharsetEncoder;
import me.prettyprint.cassandra.serializers.FloatSerializer;
import me.prettyprint.cassandra.serializers.DoubleSerializer;
import me.prettyprint.cassandra.serializers.IntegerSerializer;
import me.prettyprint.cassandra.serializers.LongSerializer;
import me.prettyprint.cassandra.serializers.StringSerializer;
import me.prettyprint.hector.api.beans.HColumn;
import org.apache.avro.Schema;
import org.apache.avro.Schema.Field;
import org.apache.avro.Schema.Type;
import org.apache.avro.generic.GenericArray;
import org.apache.avro.generic.GenericData;
import org.apache.avro.util.Utf8;
import org.apache.gora.cassandra.serializers.GenericArraySerializer;
import org.apache.gora.cassandra.serializers.StatefulHashMapSerializer;
import org.apache.gora.cassandra.serializers.TypeUtils;
import org.apache.gora.persistency.StatefulHashMap;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class CassandraSubColumn extends CassandraColumn {
public static final Logger LOG = LoggerFactory.getLogger(CassandraSubColumn.class);
private static final String ENCODING = "UTF-8";
private static CharsetEncoder charsetEncoder = Charset.forName(ENCODING).newEncoder();;
/**
* Key-value pair containing the raw data.
*/
private HColumn<ByteBuffer, ByteBuffer> hColumn;
public ByteBuffer getName() {
return hColumn.getName();
}
/**
* Deserialize a String into an typed Object, according to the field schema.
* @see org.apache.gora.cassandra.query.CassandraColumn#getValue()
*/
public Object getValue() {
Field field = getField();
Schema fieldSchema = field.schema();
Type type = fieldSchema.getType();
ByteBuffer byteBuffer = hColumn.getValue();
if (byteBuffer == null) {
return null;
}
Object value = null;
if (type == Type.ARRAY) {
GenericArraySerializer serializer = GenericArraySerializer.get(fieldSchema.getElementType());
GenericArray genericArray = serializer.fromByteBuffer(byteBuffer);
value = genericArray;
} else if (type == Type.MAP) {
StatefulHashMapSerializer serializer = StatefulHashMapSerializer.get(fieldSchema.getValueType());
StatefulHashMap map = serializer.fromByteBuffer(byteBuffer);
value = map;
} else {
value = fromByteBuffer(fieldSchema, byteBuffer);
}
return value;
}
public void setValue(HColumn<ByteBuffer, ByteBuffer> hColumn) {
this.hColumn = hColumn;
}
}