/*
* Licensed to CRATE Technology GmbH ("Crate") under one or more contributor
* license agreements. See the NOTICE file distributed with this work for
* additional information regarding copyright ownership. Crate 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.
*
* However, if you have executed another commercial license agreement
* with Crate these terms will supersede the license and you may use the
* software solely pursuant to the terms of the relevant commercial agreement.
*/
package io.crate.executor.transport.task.elasticsearch;
import com.google.common.base.Function;
import io.crate.metadata.Reference;
/**
* Interface is used together with the {@link io.crate.executor.transport.task.elasticsearch.SymbolToFieldExtractor}
* based on a defined action response.
*
* @param <T> The action response the converter is operating on
* @param <C> A {@link io.crate.executor.transport.task.elasticsearch.SymbolToFieldExtractor.Context} implementation
*/
public interface FieldExtractorFactory<T, C extends SymbolToFieldExtractor.Context> {
Function<T, Object> build(Reference reference, C context);
}