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GEARS Runtime Common
There is a newer version: 1.17.5
package com.xlrit.gears.base.model;

import java.time.OffsetDateTime;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;

import com.xlrit.gears.base.content.ContentRef;
import com.xlrit.gears.base.meta.*;
import jakarta.persistence.*;
import jakarta.persistence.Id;
import lombok.Getter;
import lombok.Setter;
import org.hibernate.annotations.JdbcTypeCode;
import org.hibernate.type.SqlTypes;

/*
MESSAGE in MESSAGES =
    SENDER          : USER
    RECIPIENT       : USER
    title           : text
    body            : text multiline
    attachments     : multiple file optional
*/
@EntityType(typeName = "MESSAGE", collectionName = "MESSAGES")
@Attributes({ "sender", "recipient", "subject", "body", "attachments" })
@Entity
@Table(name = "SYS_MESSAGE")
public class Message implements Identifiable, Auditable, Publishable {

	@Getter
	@Id @Column(name = "id_", length = 26)
	private String id;

	@Getter @Setter
	@Attribute(formalName = "SENDER", type = DataType.ENTITY, label = "Sender")
	@ManyToOne(fetch = FetchType.LAZY)
	private User sender;

	@Getter @Setter
	@Attribute(formalName = "RECIPIENT", type = DataType.ENTITY, label = "Recipient")
	@ManyToOne(fetch = FetchType.LAZY)
	private User recipient;

	@Getter @Setter
	@Attribute(formalName = "subject", type = DataType.TEXT, label = "Subject")
	@Basic @Column(name = "subject_")
	private String subject;

	@Getter @Setter
	@Attribute(formalName = "body", type = DataType.TEXT, label = "Body")
	@Trait("multiline")
	@Basic @Column(name = "body_", length = 32700)
	private String body;

	@Getter @Setter
	@Attribute(formalName = "ATTACHMENTS", type = DataType.ENTITY, label = "Attachments")
	@Basic @Column(name = "attachments_")
	@JdbcTypeCode(SqlTypes.JSON)
	private List attachments;

	@Getter @Setter
	@Basic @Column(name = "read_at_")
	private OffsetDateTime readAt;

	@Getter @Setter
	@Basic @Column(name = "process_instance_id")
	private String processInstanceId;

	@Getter @Setter
	@Basic @Column(name = "process_definition_id")
	private String processDefinitionId;

	@Getter @Setter
	@Attribute(formalName = "CREATOR", type = DataType.ENTITY, label = "Creator")
	@ManyToOne(fetch = FetchType.LAZY)
	@JoinColumn(name = "creator_id_")
	private User creator;

	@Getter @Setter
	@Attribute(formalName = "created_at", type = DataType.DATETIME, label = "Created at")
	@Basic @Column(name = "created_at_")
	private OffsetDateTime createdAt;

	@Getter @Setter
	@Attribute(formalName = "MODIFIER", type = DataType.ENTITY, label = "Modifier")
	@ManyToOne(fetch = FetchType.LAZY)
	@JoinColumn(name = "modifier_id_")
	private User modifier;

	@Getter @Setter
	@Attribute(formalName = "modified_at", type = DataType.DATETIME, label = "Modified at")
	@Basic @Column(name = "modified_at_")
	private OffsetDateTime modifiedAt;

	@Getter @Setter
	@Attribute(formalName = "PUBLISHER", type = DataType.ENTITY, label = "Publisher")
	@ManyToOne(fetch = FetchType.LAZY)
	@JoinColumn(name = "publisher_id_")
	private User publisher;

	@Getter @Setter
	@Attribute(formalName = "published_at", type = DataType.DATETIME, label = "Published at")
	@Basic @Column(name = "published_at_")
	private OffsetDateTime publishedAt;

	public Message() {}
	public Message(String id) {
		this.id = id;
		this.attachments = new ArrayList<>();
	}

	public boolean forUser(String userId) {
		return recipient != null && Objects.equals(recipient.getId(), userId);
	}

	@Override
	public boolean equals(Object obj) {
		if (this.id == null) return super.equals(obj);
		if (!(obj instanceof Message that)) return false;
		return Objects.equals(this.id, that.getId());
	}

	@Override
	public int hashCode() {
		return Objects.hash(this.id);
	}

	@Displayed
	public String defaultDisplayed() {
		return "title: " + subject;
	}

	@Override
	public String toString() {
		return "Message[" + defaultDisplayed() + "]";
	}
}