Examples with GraphDiff org.apache.cayenne.graph.GraphDiff used on opensource projects

Example 31 with GraphDiff

use of org.apache.cayenne.graph.GraphDiff in project cayenne by apache.

the class CommitLogFilter method onSync.

@Override
public GraphDiff onSync(ObjectContext originatingContext, GraphDiff beforeDiff, int syncType, DataChannelSyncFilterChain filterChain) {
    // process commits only; skip rollback
    if (syncType != DataChannel.FLUSH_CASCADE_SYNC && syncType != DataChannel.FLUSH_NOCASCADE_SYNC) {
        return filterChain.onSync(originatingContext, beforeDiff, syncType);
    }
    // don't collect changes if there are no listeners
    if (listeners.isEmpty()) {
        return filterChain.onSync(originatingContext, beforeDiff, syncType);
    }
    MutableChangeMap changes = new MutableChangeMap();
    // passing DataDomain, not ObjectContext to speed things up
    // and avoid capturing changed state when fetching snapshots
    DataChannel channel = originatingContext.getChannel();
    beforeCommit(changes, channel, beforeDiff);
    GraphDiff afterDiff = filterChain.onSync(originatingContext, beforeDiff, syncType);
    afterCommit(changes, channel, beforeDiff, afterDiff);
    notifyListeners(originatingContext, changes);
    return afterDiff;
}

Example 32 with GraphDiff

use of org.apache.cayenne.graph.GraphDiff in project cayenne by apache.

the class DataDomainFiltersIT method testOnSync_FilterOrdering.

@Test
public void testOnSync_FilterOrdering() {
    DataDomain domain = runtime.getDataDomain();
    List<String> results = new ArrayList<>();
    DataChannelSyncFilter f1 = (originatingContext, changes, syncType, filterChain) -> {
        results.add("f1start");
        GraphDiff response = filterChain.onSync(originatingContext, changes, syncType);
        results.add("f1end");
        return response;
    };
    DataChannelSyncFilter f2 = (originatingContext, changes, syncType, filterChain) -> {
        results.add("f2start");
        GraphDiff response = filterChain.onSync(originatingContext, changes, syncType);
        results.add("f2end");
        return response;
    };
    domain.syncFilters.add(f1);
    domain.syncFilters.add(f2);
    Artist a = context.newObject(Artist.class);
    a.setArtistName("AAA");
    // testing domain.onSync indirectly
    context.commitChanges();
    assertEquals(4, results.size());
    assertEquals("f2start", results.get(0));
    assertEquals("f1start", results.get(1));
    assertEquals("f1end", results.get(2));
    assertEquals("f2end", results.get(3));
}