BooleanSerializationProvider.java

package mil.nga.giat.geowave.core.store.data.field.base;

import mil.nga.giat.geowave.core.index.ByteArrayId;
import mil.nga.giat.geowave.core.store.data.field.FieldReader;
import mil.nga.giat.geowave.core.store.data.field.FieldSerializationProviderSpi;
import mil.nga.giat.geowave.core.store.data.field.FieldWriter;
import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;

public class BooleanSerializationProvider implements
		FieldSerializationProviderSpi<Boolean>
{

	@Override
	public FieldReader<Boolean> getFieldReader() {
		return new BooleanReader();
	}

	@Override
	public FieldWriter<Object, Boolean> getFieldWriter() {
		return new BooleanWriter();
	}

	private static class BooleanReader implements
			FieldReader<Boolean>
	{
		@SuppressFBWarnings(value = {
			"NP_BOOLEAN_RETURN_NULL"
		}, justification = "matches pattern of other read* methods")
		@Override
		public Boolean readField(
				final byte[] fieldData ) {
			if ((fieldData == null) || (fieldData.length < 1)) {
				return null;
			}
			return fieldData[0] > 0;
		}
	}

	private static class BooleanWriter implements
			FieldWriter<Object, Boolean>
	{
		@Override
		public byte[] getVisibility(
				final Object rowValue,
				final ByteArrayId fieldId,
				final Boolean fieldValue ) {
			return new byte[] {};
		}

		@Override
		public byte[] writeField(
				final Boolean fieldValue ) {
			return new byte[] {
				((fieldValue == null) || !fieldValue) ? (byte) 0 : (byte) 1
			};
		}
	}
}