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Integration with Grails' GORM API

There is a newer version: 0.6.1

package com.github.rahulsom.grooves.grails;

import com.github.rahulsom.grooves.api.AggregateType;
import com.github.rahulsom.grooves.api.events.BaseEvent;
import com.github.rahulsom.grooves.api.snapshots.Snapshot;
import com.github.rahulsom.grooves.queries.QuerySupport;
import com.github.rahulsom.grooves.queries.internal.BaseQuery;
import org.grails.datastore.gorm.GormEntity;
import rx.Observable;

import java.util.Date;
import java.util.List;

/**
 * Gorm Support for Query Util.
 *
 * This is the preferred way of writing Grooves applications with Grails.
 *
 * @param   The aggregate over which the query executes
 * @param     The type of the Event's id field
 * @param       The type of the Event
 * @param  The type of the Snapshot's id field
 * @param    The type of the Snapshot
 *
 * @author Rahul Somasunderam
 * @deprecated Use {@link BlockingEventSource} and {@link BlockingSnapshotSource} instead
 */
@Deprecated
// tag::documented[]
public interface GormQuerySupport<
        AggregateIdT,
        AggregateT extends AggregateType & GormEntity,
        EventIdT,
        EventT extends BaseEvent &
                GormEntity,
        SnapshotIdT,
        SnapshotT extends Snapshot &
                GormEntity,
        QueryT extends BaseQuery
        > extends QuerySupport, //<1>
        BlockingEventSource,
        BlockingSnapshotSource {

    Class getEventClass(); // <2>

    Class getSnapshotClass(); // <3>

    @Override
    default Observable getSnapshot(long maxPosition, AggregateT aggregate) {
        return BlockingSnapshotSource.super
                .getSnapshot(maxPosition, aggregate); // <4>
    }

    @Override
    default Observable getSnapshot(Date maxTimestamp, AggregateT aggregate) {
        return BlockingSnapshotSource.super
                .getSnapshot(maxTimestamp, aggregate);
    }

    @Override
    default Observable getUncomputedEvents(
            AggregateT aggregate, SnapshotT lastSnapshot, long version) {
        return BlockingEventSource.super
                .getUncomputedEvents(aggregate, lastSnapshot, version);
    }

    @Override
    default Observable getUncomputedEvents(
            AggregateT aggregate, SnapshotT lastSnapshot, Date snapshotTime) {
        return BlockingEventSource.super
                .getUncomputedEvents(aggregate, lastSnapshot, snapshotTime);
    }

}
// end::documented[]