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The AWS Java SDK for Amazon CloudSearch module holds the client classes that are used for communicating with Amazon CloudSearch Service

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/*
 * Copyright 2011-2016 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"). You may not
 * use this file except in compliance with the License. A copy of the License is
 * located at
 * 
 * http://aws.amazon.com/apache2.0
 * 
 * or in the "license" file accompanying this file. This file 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 com.amazonaws.services.cloudsearchdomain.model.transform;

import java.util.Map;
import java.util.Map.Entry;
import java.math.*;
import java.nio.ByteBuffer;

import com.amazonaws.services.cloudsearchdomain.model.*;
import com.amazonaws.transform.SimpleTypeJsonUnmarshallers.*;
import com.amazonaws.transform.*;

import com.fasterxml.jackson.core.JsonToken;
import static com.fasterxml.jackson.core.JsonToken.*;

/**
 * Hit JSON Unmarshaller
 */
public class HitJsonUnmarshaller implements
        Unmarshaller {

    public Hit unmarshall(JsonUnmarshallerContext context) throws Exception {
        Hit hit = new Hit();

        int originalDepth = context.getCurrentDepth();
        String currentParentElement = context.getCurrentParentElement();
        int targetDepth = originalDepth + 1;

        JsonToken token = context.getCurrentToken();
        if (token == null)
            token = context.nextToken();
        if (token == VALUE_NULL)
            return null;

        while (true) {
            if (token == null)
                break;

            if (token == FIELD_NAME || token == START_OBJECT) {
                if (context.testExpression("id", targetDepth)) {
                    context.nextToken();
                    hit.setId(context.getUnmarshaller(String.class).unmarshall(
                            context));
                }
                if (context.testExpression("fields", targetDepth)) {
                    context.nextToken();
                    hit.setFields(new MapUnmarshaller>(
                            context.getUnmarshaller(String.class),
                            new ListUnmarshaller(context
                                    .getUnmarshaller(String.class)))
                            .unmarshall(context));
                }
                if (context.testExpression("exprs", targetDepth)) {
                    context.nextToken();
                    hit.setExprs(new MapUnmarshaller(context
                            .getUnmarshaller(String.class), context
                            .getUnmarshaller(String.class)).unmarshall(context));
                }
                if (context.testExpression("highlights", targetDepth)) {
                    context.nextToken();
                    hit.setHighlights(new MapUnmarshaller(
                            context.getUnmarshaller(String.class), context
                                    .getUnmarshaller(String.class))
                            .unmarshall(context));
                }
            } else if (token == END_ARRAY || token == END_OBJECT) {
                if (context.getLastParsedParentElement() == null
                        || context.getLastParsedParentElement().equals(
                                currentParentElement)) {
                    if (context.getCurrentDepth() <= originalDepth)
                        break;
                }
            }
            token = context.nextToken();
        }

        return hit;
    }

    private static HitJsonUnmarshaller instance;

    public static HitJsonUnmarshaller getInstance() {
        if (instance == null)
            instance = new HitJsonUnmarshaller();
        return instance;
    }
}