Programmer's path to quantitative transaction (24) -- RemoteEvent remote event entity of Cointrader (11); programmer's path to quantitative transaction

Source: Internet
Author: User

Programmer's path to quantitative transaction (24) -- RemoteEvent remote event entity of Cointrader (11); programmer's path to quantitative transaction

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In the quantitative transaction system, some events are sent remotely, such as the stock price data. Therefore, we define a remote event entity in this section.

It is a base class and does not generate data tables separately. The Code is as follows:

package org.cryptocoinpartners.schema;import javax.annotation.Nullable;import javax.persistence.Basic;import javax.persistence.MappedSuperclass;import javax.persistence.Transient;import org.hibernate.annotations.Type;import org.joda.time.Instant;@MappedSuperclasspublic abstract class RemoteEvent extends Event {    /**     * @return the time when this event object was created.  it may be later than getTime() due to transmission delays     */    @Type(type = "org.jadira.usertype.dateandtime.joda.PersistentInstantAsMillisLong")    @Basic(optional = false)    public Instant getTimeReceived() {        return timeReceived;    }    @Transient    public long getTimestampReceived() {        return timestampReceived;    }    @Basic(optional = true)    public String getRemoteKey() {        return remoteKey;    }    @Override    public void publishedAt(Instant instant) {        super.publishedAt(instant);        if (timeReceived == null)            timeReceived = instant;        this.timestampReceived = timeReceived.getMillis();    }    protected RemoteEvent(Instant time, @Nullable String remoteKey) {        this(time,, remoteKey);    }    protected RemoteEvent(Instant time, Instant timeReceived, @Nullable String remoteKey) {        super(time);        this.remoteKey = remoteKey;        this.timeReceived = timeReceived;        this.timestampReceived = timeReceived.getMillis();    }    // JPA    protected RemoteEvent() {    }    protected void setTimeReceived(Instant timeReceived) {        this.timeReceived = timeReceived;        this.timestampReceived = timeReceived.getMillis();    }    protected void setRemoteKey(@Nullable String remoteKey) {        this.remoteKey = remoteKey;    }    private Instant timeReceived;    private long timestampReceived;    private String remoteKey;}

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