Examples of org.apache.cayenne.graph.GraphChangeHandler

org.apache.cayenne.graph.GraphChangeHandler
Defines callback API that can be used by object graph nodes to notify of their state changes. Graph nodes can be any objects as long as each node supports a notion of a unique id within the graph and each directional arc has a unique identifier within its source node. @since 1.2

        GraphDiff diffs = clientContext.internalGraphManager().getDiffs();


        final int[] arcDiffs = new int[1];
        final int[] newNodes = new int[1];


        diffs.apply(new GraphChangeHandler() {


            public void arcCreated(Object nodeId, Object targetNodeId, Object arcId) {
                arcDiffs[0]++;
            }

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    public void testReturnIdDiff() {


        final Object[] ids = new Object[2];


        final GraphChangeHandler diffReader = new NoopGraphChangeHandler() {


            @Override
            public void nodeIdChanged(Object oldId, Object newId) {
                ids[0] = oldId;
                ids[1] = newId;

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            }
        }


        // re-register changed object ids
        if (!parentChanges.isNoop()) {
            parentChanges.apply(new GraphChangeHandler() {


                public void arcCreated(Object nodeId, Object targetNodeId, Object arcId) {
                }


                public void arcDeleted(Object nodeId, Object targetNodeId, Object arcId) {

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            }
        }


        // re-register changed object ids
        if (!parentChanges.isNoop()) {
            parentChanges.apply(new GraphChangeHandler() {


                public void arcCreated(Object nodeId, Object targetNodeId, Object arcId) {
                }


                public void arcDeleted(Object nodeId, Object targetNodeId, Object arcId) {

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                // check that arc changes got recorded in the parent context
                GraphDiff diffs = clientContext.internalGraphManager().getDiffs();
                final int[] arcDiffs = new int[1];


                diffs.apply(new GraphChangeHandler() {


                    public void arcCreated(
                            Object nodeId,
                            Object targetNodeId,
                            Object arcId) {

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                // check that arc changes got recorded in the parent context
                GraphDiff diffs = clientContext.internalGraphManager().getDiffs();


                final int[] modifiedProperties = new int[1];


                diffs.apply(new GraphChangeHandler() {


                    public void arcCreated(
                            Object nodeId,
                            Object targetNodeId,
                            Object arcId) {

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        GraphDiff diffs = clientContext.internalGraphManager().getDiffs();


        final int[] arcDiffs = new int[1];
        final int[] newNodes = new int[1];


        diffs.apply(new GraphChangeHandler() {


            public void arcCreated(Object nodeId, Object targetNodeId, Object arcId) {
                arcDiffs[0]++;
            }

View Full Code Here

        GraphDiff diffs = clientContext.internalGraphManager().getDiffs();


        final int[] arcDiffs = new int[1];
        final int[] newNodes = new int[1];


        diffs.apply(new GraphChangeHandler() {


            public void arcCreated(Object nodeId, Object targetNodeId, Object arcId) {
                arcDiffs[0]++;
            }

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    private Map<ObjectId, Map<String, PropertyChange>> parseDiff() {


        final Map<ObjectId, Map<String, PropertyChange>> changes = new HashMap<ObjectId, Map<String, PropertyChange>>();


        diff.apply(new GraphChangeHandler() {


            private Map<String, PropertyChange> getChangeMap(Object id) {
                Map<String, PropertyChange> map = changes.get(id);


                if (map == null) {

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    public void testReturnIdDiff() {


        final Object[] ids = new Object[2];


        final GraphChangeHandler diffReader = new NoopGraphChangeHandler() {


            @Override
            public void nodeIdChanged(Object oldId, Object newId) {
                ids[0] = oldId;
                ids[1] = newId;

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Related Classes of org.apache.cayenne.graph.GraphChangeHandler

org.apache.cayenne.access.ObjectStore

org.apache.cayenne.lifecycle.changeset.GenericChangeSet

org.apache.cayenne.NestedCayenneContextTest

org.apache.cayenne.remote.ClientChannelServerDiffsTest

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