package org.apache.tuscany.nosqldatastore.cassandra;

import me.prettyprint.cassandra.serializers.StringSerializer;
import me.prettyprint.cassandra.service.template.ColumnFamilyResult;
import me.prettyprint.cassandra.service.template.ColumnFamilyTemplate;
import me.prettyprint.cassandra.service.template.ColumnFamilyUpdater;
import me.prettyprint.cassandra.service.template.ThriftColumnFamilyTemplate;
import me.prettyprint.hector.api.Cluster;
import me.prettyprint.hector.api.Keyspace;
import me.prettyprint.hector.api.ddl.ColumnFamilyDefinition;
import me.prettyprint.hector.api.exceptions.HInvalidRequestException;
import me.prettyprint.hector.api.factory.HFactory;
import org.apache.tuscany.nosqldatastore.Group;

class CassandraGroup implements Group {

    private ColumnFamilyTemplate<String,String> template;
    private ColumnFamilyUpdater<String, String> updater;
    private final StringSerializer se = StringSerializer.get();

	CassandraGroup(String groupId, Keyspace keyspace, Cluster cluster) {
        try{
        ColumnFamilyDefinition cfDef = HFactory.createColumnFamilyDefinition(keyspace.getKeyspaceName(), groupId);
		cluster.addColumnFamily(cfDef);
        }catch (HInvalidRequestException e){
            System.out.println("Connect to the existing group...");
        }
        template = new ThriftColumnFamilyTemplate<String, String>(keyspace,groupId,se,se,HFactory.createMutator(keyspace, se));
	}

	public void addEntry(String key, Object value) {
        updater = template.createUpdater(key);
		updater.setString(key, (String) value);
		template.update(updater);
		template.addColumn(key, se);		
	}

	public void deleteEntry(String key) {
		template.deleteColumn(key, key);
		
	}

    public Object getValue(String key) {
        ColumnFamilyResult wrapper = template.queryColumns(key);
        return wrapper.getString(key);
    }

    public void updateEntry(String key, Object value) {
		addEntry(key, value);
	}

}