/*
 * Copyright 2018-2023 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.personalizeevents.model;

import java.io.Serializable;
import javax.annotation.Generated;
import com.amazonaws.protocol.StructuredPojo;
import com.amazonaws.protocol.ProtocolMarshaller;

/**
 * <p>
 * Represents user interaction event information sent using the <code>PutEvents</code> API.
 * </p>
 * 
 * @see <a href="http://docs.aws.amazon.com/goto/WebAPI/personalize-events-2018-03-22/Event" target="_top">AWS API
 *      Documentation</a>
 */
@Generated("com.amazonaws:aws-java-sdk-code-generator")
public class Event implements Serializable, Cloneable, StructuredPojo {

    /**
     * <p>
     * An ID associated with the event. If an event ID is not provided, Amazon Personalize generates a unique ID for the
     * event. An event ID is not used as an input to the model. Amazon Personalize uses the event ID to distinquish
     * unique events. Any subsequent events after the first with the same event ID are not used in model training.
     * </p>
     */
    private String eventId;
    /**
     * <p>
     * The type of event, such as click or download. This property corresponds to the <code>EVENT_TYPE</code> field of
     * your Interactions schema and depends on the types of events you are tracking.
     * </p>
     */
    private String eventType;
    /**
     * <p>
     * The event value that corresponds to the <code>EVENT_VALUE</code> field of the Interactions schema.
     * </p>
     */
    private Float eventValue;
    /**
     * <p>
     * The item ID key that corresponds to the <code>ITEM_ID</code> field of the Interactions schema.
     * </p>
     */
    private String itemId;
    /**
     * <p>
     * A string map of event-specific data that you might choose to record. For example, if a user rates a movie on your
     * site, other than movie ID (<code>itemId</code>) and rating (<code>eventValue</code>) , you might also send the
     * number of movie ratings made by the user.
     * </p>
     * <p>
     * Each item in the map consists of a key-value pair. For example,
     * </p>
     * <p>
     * <code>{"numberOfRatings": "12"}</code>
     * </p>
     * <p>
     * The keys use camel case names that match the fields in the Interactions schema. In the above example, the
     * <code>numberOfRatings</code> would match the 'NUMBER_OF_RATINGS' field defined in the Interactions schema.
     * </p>
     */
    private String properties;
    /**
     * <p>
     * The timestamp (in Unix time) on the client side when the event occurred.
     * </p>
     */
    private java.util.Date sentAt;
    /**
     * <p>
     * The ID of the list of recommendations that contains the item the user interacted with. Provide a
     * <code>recommendationId</code> to have Amazon Personalize implicitly record the recommendations you show your user
     * as impressions data. Or provide a <code>recommendationId</code> if you use a metric attribution to measure the
     * impact of recommendations.
     * </p>
     * <p>
     * For more information on recording impressions data, see <a href=
     * "https://docs.aws.amazon.com/personalize/latest/dg/recording-events.html#putevents-including-impressions-data"
     * >Recording impressions data</a>. For more information on creating a metric attribution see <a
     * href="https://docs.aws.amazon.com/personalize/latest/dg/measuring-recommendation-impact.html">Measuring impact of
     * recommendations</a>.
     * </p>
     */
    private String recommendationId;
    /**
     * <p>
     * A list of item IDs that represents the sequence of items you have shown the user. For example,
     * <code>["itemId1", "itemId2", "itemId3"]</code>. Provide a list of items to manually record impressions data for
     * an event. For more information on recording impressions data, see <a href=
     * "https://docs.aws.amazon.com/personalize/latest/dg/recording-events.html#putevents-including-impressions-data"
     * >Recording impressions data</a>.
     * </p>
     */
    private java.util.List<String> impression;
    /**
     * <p>
     * Contains information about the metric attribution associated with an event. For more information about metric
     * attributions, see <a
     * href="https://docs.aws.amazon.com/personalize/latest/dg/measuring-recommendation-impact.html">Measuring impact of
     * recommendations</a>.
     * </p>
     */
    private MetricAttribution metricAttribution;

    /**
     * <p>
     * An ID associated with the event. If an event ID is not provided, Amazon Personalize generates a unique ID for the
     * event. An event ID is not used as an input to the model. Amazon Personalize uses the event ID to distinquish
     * unique events. Any subsequent events after the first with the same event ID are not used in model training.
     * </p>
     * 
     * @param eventId
     *        An ID associated with the event. If an event ID is not provided, Amazon Personalize generates a unique ID
     *        for the event. An event ID is not used as an input to the model. Amazon Personalize uses the event ID to
     *        distinquish unique events. Any subsequent events after the first with the same event ID are not used in
     *        model training.
     */

    public void setEventId(String eventId) {
        this.eventId = eventId;
    }

    /**
     * <p>
     * An ID associated with the event. If an event ID is not provided, Amazon Personalize generates a unique ID for the
     * event. An event ID is not used as an input to the model. Amazon Personalize uses the event ID to distinquish
     * unique events. Any subsequent events after the first with the same event ID are not used in model training.
     * </p>
     * 
     * @return An ID associated with the event. If an event ID is not provided, Amazon Personalize generates a unique ID
     *         for the event. An event ID is not used as an input to the model. Amazon Personalize uses the event ID to
     *         distinquish unique events. Any subsequent events after the first with the same event ID are not used in
     *         model training.
     */

    public String getEventId() {
        return this.eventId;
    }

    /**
     * <p>
     * An ID associated with the event. If an event ID is not provided, Amazon Personalize generates a unique ID for the
     * event. An event ID is not used as an input to the model. Amazon Personalize uses the event ID to distinquish
     * unique events. Any subsequent events after the first with the same event ID are not used in model training.
     * </p>
     * 
     * @param eventId
     *        An ID associated with the event. If an event ID is not provided, Amazon Personalize generates a unique ID
     *        for the event. An event ID is not used as an input to the model. Amazon Personalize uses the event ID to
     *        distinquish unique events. Any subsequent events after the first with the same event ID are not used in
     *        model training.
     * @return Returns a reference to this object so that method calls can be chained together.
     */

    public Event withEventId(String eventId) {
        setEventId(eventId);
        return this;
    }

    /**
     * <p>
     * The type of event, such as click or download. This property corresponds to the <code>EVENT_TYPE</code> field of
     * your Interactions schema and depends on the types of events you are tracking.
     * </p>
     * 
     * @param eventType
     *        The type of event, such as click or download. This property corresponds to the <code>EVENT_TYPE</code>
     *        field of your Interactions schema and depends on the types of events you are tracking.
     */

    public void setEventType(String eventType) {
        this.eventType = eventType;
    }

    /**
     * <p>
     * The type of event, such as click or download. This property corresponds to the <code>EVENT_TYPE</code> field of
     * your Interactions schema and depends on the types of events you are tracking.
     * </p>
     * 
     * @return The type of event, such as click or download. This property corresponds to the <code>EVENT_TYPE</code>
     *         field of your Interactions schema and depends on the types of events you are tracking.
     */

    public String getEventType() {
        return this.eventType;
    }

    /**
     * <p>
     * The type of event, such as click or download. This property corresponds to the <code>EVENT_TYPE</code> field of
     * your Interactions schema and depends on the types of events you are tracking.
     * </p>
     * 
     * @param eventType
     *        The type of event, such as click or download. This property corresponds to the <code>EVENT_TYPE</code>
     *        field of your Interactions schema and depends on the types of events you are tracking.
     * @return Returns a reference to this object so that method calls can be chained together.
     */

    public Event withEventType(String eventType) {
        setEventType(eventType);
        return this;
    }

    /**
     * <p>
     * The event value that corresponds to the <code>EVENT_VALUE</code> field of the Interactions schema.
     * </p>
     * 
     * @param eventValue
     *        The event value that corresponds to the <code>EVENT_VALUE</code> field of the Interactions schema.
     */

    public void setEventValue(Float eventValue) {
        this.eventValue = eventValue;
    }

    /**
     * <p>
     * The event value that corresponds to the <code>EVENT_VALUE</code> field of the Interactions schema.
     * </p>
     * 
     * @return The event value that corresponds to the <code>EVENT_VALUE</code> field of the Interactions schema.
     */

    public Float getEventValue() {
        return this.eventValue;
    }

    /**
     * <p>
     * The event value that corresponds to the <code>EVENT_VALUE</code> field of the Interactions schema.
     * </p>
     * 
     * @param eventValue
     *        The event value that corresponds to the <code>EVENT_VALUE</code> field of the Interactions schema.
     * @return Returns a reference to this object so that method calls can be chained together.
     */

    public Event withEventValue(Float eventValue) {
        setEventValue(eventValue);
        return this;
    }

    /**
     * <p>
     * The item ID key that corresponds to the <code>ITEM_ID</code> field of the Interactions schema.
     * </p>
     * 
     * @param itemId
     *        The item ID key that corresponds to the <code>ITEM_ID</code> field of the Interactions schema.
     */

    public void setItemId(String itemId) {
        this.itemId = itemId;
    }

    /**
     * <p>
     * The item ID key that corresponds to the <code>ITEM_ID</code> field of the Interactions schema.
     * </p>
     * 
     * @return The item ID key that corresponds to the <code>ITEM_ID</code> field of the Interactions schema.
     */

    public String getItemId() {
        return this.itemId;
    }

    /**
     * <p>
     * The item ID key that corresponds to the <code>ITEM_ID</code> field of the Interactions schema.
     * </p>
     * 
     * @param itemId
     *        The item ID key that corresponds to the <code>ITEM_ID</code> field of the Interactions schema.
     * @return Returns a reference to this object so that method calls can be chained together.
     */

    public Event withItemId(String itemId) {
        setItemId(itemId);
        return this;
    }

    /**
     * <p>
     * A string map of event-specific data that you might choose to record. For example, if a user rates a movie on your
     * site, other than movie ID (<code>itemId</code>) and rating (<code>eventValue</code>) , you might also send the
     * number of movie ratings made by the user.
     * </p>
     * <p>
     * Each item in the map consists of a key-value pair. For example,
     * </p>
     * <p>
     * <code>{"numberOfRatings": "12"}</code>
     * </p>
     * <p>
     * The keys use camel case names that match the fields in the Interactions schema. In the above example, the
     * <code>numberOfRatings</code> would match the 'NUMBER_OF_RATINGS' field defined in the Interactions schema.
     * </p>
     * <p>
     * This field's value must be valid JSON according to RFC 7159, including the opening and closing braces. For
     * example: '{"key": "value"}'.
     * </p>
     * <p>
     * The AWS SDK for Java performs a Base64 encoding on this field before sending this request to the AWS service.
     * Users of the SDK should not perform Base64 encoding on this field.
     * </p>
     * 
     * @param properties
     *        A string map of event-specific data that you might choose to record. For example, if a user rates a movie
     *        on your site, other than movie ID (<code>itemId</code>) and rating (<code>eventValue</code>) , you might
     *        also send the number of movie ratings made by the user.</p>
     *        <p>
     *        Each item in the map consists of a key-value pair. For example,
     *        </p>
     *        <p>
     *        <code>{"numberOfRatings": "12"}</code>
     *        </p>
     *        <p>
     *        The keys use camel case names that match the fields in the Interactions schema. In the above example, the
     *        <code>numberOfRatings</code> would match the 'NUMBER_OF_RATINGS' field defined in the Interactions schema.
     */

    public void setProperties(String properties) {
        this.properties = properties;
    }

    /**
     * <p>
     * A string map of event-specific data that you might choose to record. For example, if a user rates a movie on your
     * site, other than movie ID (<code>itemId</code>) and rating (<code>eventValue</code>) , you might also send the
     * number of movie ratings made by the user.
     * </p>
     * <p>
     * Each item in the map consists of a key-value pair. For example,
     * </p>
     * <p>
     * <code>{"numberOfRatings": "12"}</code>
     * </p>
     * <p>
     * The keys use camel case names that match the fields in the Interactions schema. In the above example, the
     * <code>numberOfRatings</code> would match the 'NUMBER_OF_RATINGS' field defined in the Interactions schema.
     * </p>
     * <p>
     * This field's value will be valid JSON according to RFC 7159, including the opening and closing braces. For
     * example: '{"key": "value"}'.
     * </p>
     * 
     * @return A string map of event-specific data that you might choose to record. For example, if a user rates a movie
     *         on your site, other than movie ID (<code>itemId</code>) and rating (<code>eventValue</code>) , you might
     *         also send the number of movie ratings made by the user.</p>
     *         <p>
     *         Each item in the map consists of a key-value pair. For example,
     *         </p>
     *         <p>
     *         <code>{"numberOfRatings": "12"}</code>
     *         </p>
     *         <p>
     *         The keys use camel case names that match the fields in the Interactions schema. In the above example, the
     *         <code>numberOfRatings</code> would match the 'NUMBER_OF_RATINGS' field defined in the Interactions
     *         schema.
     */

    public String getProperties() {
        return this.properties;
    }

    /**
     * <p>
     * A string map of event-specific data that you might choose to record. For example, if a user rates a movie on your
     * site, other than movie ID (<code>itemId</code>) and rating (<code>eventValue</code>) , you might also send the
     * number of movie ratings made by the user.
     * </p>
     * <p>
     * Each item in the map consists of a key-value pair. For example,
     * </p>
     * <p>
     * <code>{"numberOfRatings": "12"}</code>
     * </p>
     * <p>
     * The keys use camel case names that match the fields in the Interactions schema. In the above example, the
     * <code>numberOfRatings</code> would match the 'NUMBER_OF_RATINGS' field defined in the Interactions schema.
     * </p>
     * <p>
     * This field's value must be valid JSON according to RFC 7159, including the opening and closing braces. For
     * example: '{"key": "value"}'.
     * </p>
     * <p>
     * The AWS SDK for Java performs a Base64 encoding on this field before sending this request to the AWS service.
     * Users of the SDK should not perform Base64 encoding on this field.
     * </p>
     * 
     * @param properties
     *        A string map of event-specific data that you might choose to record. For example, if a user rates a movie
     *        on your site, other than movie ID (<code>itemId</code>) and rating (<code>eventValue</code>) , you might
     *        also send the number of movie ratings made by the user.</p>
     *        <p>
     *        Each item in the map consists of a key-value pair. For example,
     *        </p>
     *        <p>
     *        <code>{"numberOfRatings": "12"}</code>
     *        </p>
     *        <p>
     *        The keys use camel case names that match the fields in the Interactions schema. In the above example, the
     *        <code>numberOfRatings</code> would match the 'NUMBER_OF_RATINGS' field defined in the Interactions schema.
     * @return Returns a reference to this object so that method calls can be chained together.
     */

    public Event withProperties(String properties) {
        setProperties(properties);
        return this;
    }

    /**
     * <p>
     * The timestamp (in Unix time) on the client side when the event occurred.
     * </p>
     * 
     * @param sentAt
     *        The timestamp (in Unix time) on the client side when the event occurred.
     */

    public void setSentAt(java.util.Date sentAt) {
        this.sentAt = sentAt;
    }

    /**
     * <p>
     * The timestamp (in Unix time) on the client side when the event occurred.
     * </p>
     * 
     * @return The timestamp (in Unix time) on the client side when the event occurred.
     */

    public java.util.Date getSentAt() {
        return this.sentAt;
    }

    /**
     * <p>
     * The timestamp (in Unix time) on the client side when the event occurred.
     * </p>
     * 
     * @param sentAt
     *        The timestamp (in Unix time) on the client side when the event occurred.
     * @return Returns a reference to this object so that method calls can be chained together.
     */

    public Event withSentAt(java.util.Date sentAt) {
        setSentAt(sentAt);
        return this;
    }

    /**
     * <p>
     * The ID of the list of recommendations that contains the item the user interacted with. Provide a
     * <code>recommendationId</code> to have Amazon Personalize implicitly record the recommendations you show your user
     * as impressions data. Or provide a <code>recommendationId</code> if you use a metric attribution to measure the
     * impact of recommendations.
     * </p>
     * <p>
     * For more information on recording impressions data, see <a href=
     * "https://docs.aws.amazon.com/personalize/latest/dg/recording-events.html#putevents-including-impressions-data"
     * >Recording impressions data</a>. For more information on creating a metric attribution see <a
     * href="https://docs.aws.amazon.com/personalize/latest/dg/measuring-recommendation-impact.html">Measuring impact of
     * recommendations</a>.
     * </p>
     * 
     * @param recommendationId
     *        The ID of the list of recommendations that contains the item the user interacted with. Provide a
     *        <code>recommendationId</code> to have Amazon Personalize implicitly record the recommendations you show
     *        your user as impressions data. Or provide a <code>recommendationId</code> if you use a metric attribution
     *        to measure the impact of recommendations. </p>
     *        <p>
     *        For more information on recording impressions data, see <a href=
     *        "https://docs.aws.amazon.com/personalize/latest/dg/recording-events.html#putevents-including-impressions-data"
     *        >Recording impressions data</a>. For more information on creating a metric attribution see <a
     *        href="https://docs.aws.amazon.com/personalize/latest/dg/measuring-recommendation-impact.html">Measuring
     *        impact of recommendations</a>.
     */

    public void setRecommendationId(String recommendationId) {
        this.recommendationId = recommendationId;
    }

    /**
     * <p>
     * The ID of the list of recommendations that contains the item the user interacted with. Provide a
     * <code>recommendationId</code> to have Amazon Personalize implicitly record the recommendations you show your user
     * as impressions data. Or provide a <code>recommendationId</code> if you use a metric attribution to measure the
     * impact of recommendations.
     * </p>
     * <p>
     * For more information on recording impressions data, see <a href=
     * "https://docs.aws.amazon.com/personalize/latest/dg/recording-events.html#putevents-including-impressions-data"
     * >Recording impressions data</a>. For more information on creating a metric attribution see <a
     * href="https://docs.aws.amazon.com/personalize/latest/dg/measuring-recommendation-impact.html">Measuring impact of
     * recommendations</a>.
     * </p>
     * 
     * @return The ID of the list of recommendations that contains the item the user interacted with. Provide a
     *         <code>recommendationId</code> to have Amazon Personalize implicitly record the recommendations you show
     *         your user as impressions data. Or provide a <code>recommendationId</code> if you use a metric attribution
     *         to measure the impact of recommendations. </p>
     *         <p>
     *         For more information on recording impressions data, see <a href=
     *         "https://docs.aws.amazon.com/personalize/latest/dg/recording-events.html#putevents-including-impressions-data"
     *         >Recording impressions data</a>. For more information on creating a metric attribution see <a
     *         href="https://docs.aws.amazon.com/personalize/latest/dg/measuring-recommendation-impact.html">Measuring
     *         impact of recommendations</a>.
     */

    public String getRecommendationId() {
        return this.recommendationId;
    }

    /**
     * <p>
     * The ID of the list of recommendations that contains the item the user interacted with. Provide a
     * <code>recommendationId</code> to have Amazon Personalize implicitly record the recommendations you show your user
     * as impressions data. Or provide a <code>recommendationId</code> if you use a metric attribution to measure the
     * impact of recommendations.
     * </p>
     * <p>
     * For more information on recording impressions data, see <a href=
     * "https://docs.aws.amazon.com/personalize/latest/dg/recording-events.html#putevents-including-impressions-data"
     * >Recording impressions data</a>. For more information on creating a metric attribution see <a
     * href="https://docs.aws.amazon.com/personalize/latest/dg/measuring-recommendation-impact.html">Measuring impact of
     * recommendations</a>.
     * </p>
     * 
     * @param recommendationId
     *        The ID of the list of recommendations that contains the item the user interacted with. Provide a
     *        <code>recommendationId</code> to have Amazon Personalize implicitly record the recommendations you show
     *        your user as impressions data. Or provide a <code>recommendationId</code> if you use a metric attribution
     *        to measure the impact of recommendations. </p>
     *        <p>
     *        For more information on recording impressions data, see <a href=
     *        "https://docs.aws.amazon.com/personalize/latest/dg/recording-events.html#putevents-including-impressions-data"
     *        >Recording impressions data</a>. For more information on creating a metric attribution see <a
     *        href="https://docs.aws.amazon.com/personalize/latest/dg/measuring-recommendation-impact.html">Measuring
     *        impact of recommendations</a>.
     * @return Returns a reference to this object so that method calls can be chained together.
     */

    public Event withRecommendationId(String recommendationId) {
        setRecommendationId(recommendationId);
        return this;
    }

    /**
     * <p>
     * A list of item IDs that represents the sequence of items you have shown the user. For example,
     * <code>["itemId1", "itemId2", "itemId3"]</code>. Provide a list of items to manually record impressions data for
     * an event. For more information on recording impressions data, see <a href=
     * "https://docs.aws.amazon.com/personalize/latest/dg/recording-events.html#putevents-including-impressions-data"
     * >Recording impressions data</a>.
     * </p>
     * 
     * @return A list of item IDs that represents the sequence of items you have shown the user. For example,
     *         <code>["itemId1", "itemId2", "itemId3"]</code>. Provide a list of items to manually record impressions
     *         data for an event. For more information on recording impressions data, see <a href=
     *         "https://docs.aws.amazon.com/personalize/latest/dg/recording-events.html#putevents-including-impressions-data"
     *         >Recording impressions data</a>.
     */

    public java.util.List<String> getImpression() {
        return impression;
    }

    /**
     * <p>
     * A list of item IDs that represents the sequence of items you have shown the user. For example,
     * <code>["itemId1", "itemId2", "itemId3"]</code>. Provide a list of items to manually record impressions data for
     * an event. For more information on recording impressions data, see <a href=
     * "https://docs.aws.amazon.com/personalize/latest/dg/recording-events.html#putevents-including-impressions-data"
     * >Recording impressions data</a>.
     * </p>
     * 
     * @param impression
     *        A list of item IDs that represents the sequence of items you have shown the user. For example,
     *        <code>["itemId1", "itemId2", "itemId3"]</code>. Provide a list of items to manually record impressions
     *        data for an event. For more information on recording impressions data, see <a href=
     *        "https://docs.aws.amazon.com/personalize/latest/dg/recording-events.html#putevents-including-impressions-data"
     *        >Recording impressions data</a>.
     */

    public void setImpression(java.util.Collection<String> impression) {
        if (impression == null) {
            this.impression = null;
            return;
        }

        this.impression = new java.util.ArrayList<String>(impression);
    }

    /**
     * <p>
     * A list of item IDs that represents the sequence of items you have shown the user. For example,
     * <code>["itemId1", "itemId2", "itemId3"]</code>. Provide a list of items to manually record impressions data for
     * an event. For more information on recording impressions data, see <a href=
     * "https://docs.aws.amazon.com/personalize/latest/dg/recording-events.html#putevents-including-impressions-data"
     * >Recording impressions data</a>.
     * </p>
     * <p>
     * <b>NOTE:</b> This method appends the values to the existing list (if any). Use
     * {@link #setImpression(java.util.Collection)} or {@link #withImpression(java.util.Collection)} if you want to
     * override the existing values.
     * </p>
     * 
     * @param impression
     *        A list of item IDs that represents the sequence of items you have shown the user. For example,
     *        <code>["itemId1", "itemId2", "itemId3"]</code>. Provide a list of items to manually record impressions
     *        data for an event. For more information on recording impressions data, see <a href=
     *        "https://docs.aws.amazon.com/personalize/latest/dg/recording-events.html#putevents-including-impressions-data"
     *        >Recording impressions data</a>.
     * @return Returns a reference to this object so that method calls can be chained together.
     */

    public Event withImpression(String... impression) {
        if (this.impression == null) {
            setImpression(new java.util.ArrayList<String>(impression.length));
        }
        for (String ele : impression) {
            this.impression.add(ele);
        }
        return this;
    }

    /**
     * <p>
     * A list of item IDs that represents the sequence of items you have shown the user. For example,
     * <code>["itemId1", "itemId2", "itemId3"]</code>. Provide a list of items to manually record impressions data for
     * an event. For more information on recording impressions data, see <a href=
     * "https://docs.aws.amazon.com/personalize/latest/dg/recording-events.html#putevents-including-impressions-data"
     * >Recording impressions data</a>.
     * </p>
     * 
     * @param impression
     *        A list of item IDs that represents the sequence of items you have shown the user. For example,
     *        <code>["itemId1", "itemId2", "itemId3"]</code>. Provide a list of items to manually record impressions
     *        data for an event. For more information on recording impressions data, see <a href=
     *        "https://docs.aws.amazon.com/personalize/latest/dg/recording-events.html#putevents-including-impressions-data"
     *        >Recording impressions data</a>.
     * @return Returns a reference to this object so that method calls can be chained together.
     */

    public Event withImpression(java.util.Collection<String> impression) {
        setImpression(impression);
        return this;
    }

    /**
     * <p>
     * Contains information about the metric attribution associated with an event. For more information about metric
     * attributions, see <a
     * href="https://docs.aws.amazon.com/personalize/latest/dg/measuring-recommendation-impact.html">Measuring impact of
     * recommendations</a>.
     * </p>
     * 
     * @param metricAttribution
     *        Contains information about the metric attribution associated with an event. For more information about
     *        metric attributions, see <a
     *        href="https://docs.aws.amazon.com/personalize/latest/dg/measuring-recommendation-impact.html">Measuring
     *        impact of recommendations</a>.
     */

    public void setMetricAttribution(MetricAttribution metricAttribution) {
        this.metricAttribution = metricAttribution;
    }

    /**
     * <p>
     * Contains information about the metric attribution associated with an event. For more information about metric
     * attributions, see <a
     * href="https://docs.aws.amazon.com/personalize/latest/dg/measuring-recommendation-impact.html">Measuring impact of
     * recommendations</a>.
     * </p>
     * 
     * @return Contains information about the metric attribution associated with an event. For more information about
     *         metric attributions, see <a
     *         href="https://docs.aws.amazon.com/personalize/latest/dg/measuring-recommendation-impact.html">Measuring
     *         impact of recommendations</a>.
     */

    public MetricAttribution getMetricAttribution() {
        return this.metricAttribution;
    }

    /**
     * <p>
     * Contains information about the metric attribution associated with an event. For more information about metric
     * attributions, see <a
     * href="https://docs.aws.amazon.com/personalize/latest/dg/measuring-recommendation-impact.html">Measuring impact of
     * recommendations</a>.
     * </p>
     * 
     * @param metricAttribution
     *        Contains information about the metric attribution associated with an event. For more information about
     *        metric attributions, see <a
     *        href="https://docs.aws.amazon.com/personalize/latest/dg/measuring-recommendation-impact.html">Measuring
     *        impact of recommendations</a>.
     * @return Returns a reference to this object so that method calls can be chained together.
     */

    public Event withMetricAttribution(MetricAttribution metricAttribution) {
        setMetricAttribution(metricAttribution);
        return this;
    }

    /**
     * Returns a string representation of this object. This is useful for testing and debugging. Sensitive data will be
     * redacted from this string using a placeholder value.
     *
     * @return A string representation of this object.
     *
     * @see java.lang.Object#toString()
     */
    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        sb.append("{");
        if (getEventId() != null)
            sb.append("EventId: ").append(getEventId()).append(",");
        if (getEventType() != null)
            sb.append("EventType: ").append(getEventType()).append(",");
        if (getEventValue() != null)
            sb.append("EventValue: ").append(getEventValue()).append(",");
        if (getItemId() != null)
            sb.append("ItemId: ").append("***Sensitive Data Redacted***").append(",");
        if (getProperties() != null)
            sb.append("Properties: ").append("***Sensitive Data Redacted***").append(",");
        if (getSentAt() != null)
            sb.append("SentAt: ").append(getSentAt()).append(",");
        if (getRecommendationId() != null)
            sb.append("RecommendationId: ").append(getRecommendationId()).append(",");
        if (getImpression() != null)
            sb.append("Impression: ").append("***Sensitive Data Redacted***").append(",");
        if (getMetricAttribution() != null)
            sb.append("MetricAttribution: ").append(getMetricAttribution());
        sb.append("}");
        return sb.toString();
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj)
            return true;
        if (obj == null)
            return false;

        if (obj instanceof Event == false)
            return false;
        Event other = (Event) obj;
        if (other.getEventId() == null ^ this.getEventId() == null)
            return false;
        if (other.getEventId() != null && other.getEventId().equals(this.getEventId()) == false)
            return false;
        if (other.getEventType() == null ^ this.getEventType() == null)
            return false;
        if (other.getEventType() != null && other.getEventType().equals(this.getEventType()) == false)
            return false;
        if (other.getEventValue() == null ^ this.getEventValue() == null)
            return false;
        if (other.getEventValue() != null && other.getEventValue().equals(this.getEventValue()) == false)
            return false;
        if (other.getItemId() == null ^ this.getItemId() == null)
            return false;
        if (other.getItemId() != null && other.getItemId().equals(this.getItemId()) == false)
            return false;
        if (other.getProperties() == null ^ this.getProperties() == null)
            return false;
        if (other.getProperties() != null && other.getProperties().equals(this.getProperties()) == false)
            return false;
        if (other.getSentAt() == null ^ this.getSentAt() == null)
            return false;
        if (other.getSentAt() != null && other.getSentAt().equals(this.getSentAt()) == false)
            return false;
        if (other.getRecommendationId() == null ^ this.getRecommendationId() == null)
            return false;
        if (other.getRecommendationId() != null && other.getRecommendationId().equals(this.getRecommendationId()) == false)
            return false;
        if (other.getImpression() == null ^ this.getImpression() == null)
            return false;
        if (other.getImpression() != null && other.getImpression().equals(this.getImpression()) == false)
            return false;
        if (other.getMetricAttribution() == null ^ this.getMetricAttribution() == null)
            return false;
        if (other.getMetricAttribution() != null && other.getMetricAttribution().equals(this.getMetricAttribution()) == false)
            return false;
        return true;
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int hashCode = 1;

        hashCode = prime * hashCode + ((getEventId() == null) ? 0 : getEventId().hashCode());
        hashCode = prime * hashCode + ((getEventType() == null) ? 0 : getEventType().hashCode());
        hashCode = prime * hashCode + ((getEventValue() == null) ? 0 : getEventValue().hashCode());
        hashCode = prime * hashCode + ((getItemId() == null) ? 0 : getItemId().hashCode());
        hashCode = prime * hashCode + ((getProperties() == null) ? 0 : getProperties().hashCode());
        hashCode = prime * hashCode + ((getSentAt() == null) ? 0 : getSentAt().hashCode());
        hashCode = prime * hashCode + ((getRecommendationId() == null) ? 0 : getRecommendationId().hashCode());
        hashCode = prime * hashCode + ((getImpression() == null) ? 0 : getImpression().hashCode());
        hashCode = prime * hashCode + ((getMetricAttribution() == null) ? 0 : getMetricAttribution().hashCode());
        return hashCode;
    }

    @Override
    public Event clone() {
        try {
            return (Event) super.clone();
        } catch (CloneNotSupportedException e) {
            throw new IllegalStateException("Got a CloneNotSupportedException from Object.clone() " + "even though we're Cloneable!", e);
        }
    }

    @com.amazonaws.annotation.SdkInternalApi
    @Override
    public void marshall(ProtocolMarshaller protocolMarshaller) {
        com.amazonaws.services.personalizeevents.model.transform.EventMarshaller.getInstance().marshall(this, protocolMarshaller);
    }
}