package edu.uci.ics.hivesterix.runtime.provider;

import org.apache.hadoop.hive.serde2.typeinfo.TypeInfoFactory;

import edu.uci.ics.hivesterix.runtime.factory.hashfunction.HiveDoubleBinaryHashFunctionFactory;
import edu.uci.ics.hivesterix.runtime.factory.hashfunction.HiveIntegerBinaryHashFunctionFactory;
import edu.uci.ics.hivesterix.runtime.factory.hashfunction.HiveLongBinaryHashFunctionFactory;
import edu.uci.ics.hivesterix.runtime.factory.hashfunction.HiveRawBinaryHashFunctionFactory;
import edu.uci.ics.hivesterix.runtime.factory.hashfunction.HiveStingBinaryHashFunctionFactory;
import edu.uci.ics.hyracks.algebricks.common.exceptions.AlgebricksException;
import edu.uci.ics.hyracks.algebricks.data.IBinaryHashFunctionFactoryProvider;
import edu.uci.ics.hyracks.api.dataflow.value.IBinaryHashFunctionFactory;

public class HiveBinaryHashFunctionFactoryProvider implements
		IBinaryHashFunctionFactoryProvider {

	public static final HiveBinaryHashFunctionFactoryProvider INSTANCE = new HiveBinaryHashFunctionFactoryProvider();

	private HiveBinaryHashFunctionFactoryProvider() {
	}

	@Override
	public IBinaryHashFunctionFactory getBinaryHashFunctionFactory(Object type)
			throws AlgebricksException {
		if (type.equals(TypeInfoFactory.intTypeInfo)) {
			return HiveIntegerBinaryHashFunctionFactory.INSTANCE;
		} else if (type.equals(TypeInfoFactory.longTypeInfo)) {
			return HiveLongBinaryHashFunctionFactory.INSTANCE;
		} else if (type.equals(TypeInfoFactory.stringTypeInfo)) {
			return HiveStingBinaryHashFunctionFactory.INSTANCE;
		} else if (type.equals(TypeInfoFactory.doubleTypeInfo)) {
			return HiveDoubleBinaryHashFunctionFactory.INSTANCE;
		} else {
			return HiveRawBinaryHashFunctionFactory.INSTANCE;
		}
	}
}