/**
* 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 me.prettyprint.hector.api.Serializer;
import org.apache.avro.Schema;
import org.apache.avro.Schema.Field;
import org.apache.avro.Schema.Type;
import org.apache.gora.cassandra.serializers.GoraSerializerTypeInferer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Represents a unit of data: a key value pair tagged by a family name
*/
public abstract class CassandraColumn {
public static final Logger LOG = LoggerFactory.getLogger(CassandraColumn.class);
public static final int SUB = 0;
public static final int SUPER = 1;
private String family;
private int type;
private Field field;
public String getFamily() {
return family;
}
public void setFamily(String family) {
this.family = family;
}
public int getType() {
return type;
}
public void setType(int type) {
this.type = type;
}
public void setField(Field field) {
this.field = field;
}
protected Field getField() {
return this.field;
}
public abstract ByteBuffer getName();
public abstract Object getValue();
protected Object fromByteBuffer(Schema schema, ByteBuffer byteBuffer) {
Object value = null;
Serializer serializer = GoraSerializerTypeInferer.getSerializer(schema);
if (serializer == null) {
LOG.info("Schema is not supported: " + schema.toString());
} else {
value = serializer.fromByteBuffer(byteBuffer);
}
return value;
}
}