// Copyright 2017 JanusGraph Authors
//
// Licensed 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.janusgraph.graphdb.database.serialize;
import org.janusgraph.core.attribute.AttributeSerializer;
/**
* @author Matthias Broecheler (me@matthiasb.com)
*/
public interface AttributeHandler {
public <T> void registerClass(int registrationNo, Class<T> type, AttributeSerializer<T> attributeHandler);
public boolean validDataType(Class datatype);
public<V> void verifyAttribute(Class<V> datatype, Object value);
/**
* Converts the given (not-null) value to the this datatype V.
* The given object will NOT be of type V.
* Throws an {@link IllegalArgumentException} if it cannot be converted.
*
* @param value to convert
* @return converted to expected datatype
*/
public<V> V convert(Class<V> datatype, Object value);
public boolean isOrderPreservingDatatype(Class<?> datatype);
}