ValueReader.java

/*
 * Licensed to Elasticsearch under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch 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
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package org.elasticsearch.hadoop.serialization.builder;

import java.util.List;

import org.elasticsearch.hadoop.serialization.FieldType;
import org.elasticsearch.hadoop.serialization.Parser;


/**
 * Translates a JSON field to an actual object. Implementations should only handle the conversion and not influence the parser outside the conversion.
 */
public interface ValueReader {

    Object readValue(Parser parser, String value, FieldType esType);

    Object createMap();

    void addToMap(Object map, Object key, Object value);

    Object wrapString(String value);

    Object createArray(FieldType type);

    Object addToArray(Object array, List<Object> values);

    void beginField(String fieldName);

    void endField(String fieldName);
}