Examples with Element uk.gov.gchq.gaffer.data.element.Element used on opensource projects

Example 56 with Element

use of uk.gov.gchq.gaffer.data.element.Element in project Gaffer by gchq.

the class OperationServiceIT method shouldReturnNoChunkedElementsWhenNoElementsInGraph.

@Test
public void shouldReturnNoChunkedElementsWhenNoElementsInGraph() throws IOException {
    // When
    final Response response = RestApiTestUtil.executeOperationChainChunked(new OperationChain<>(new GetAllElements<>()));
    // Then
    final List<Element> results = readChunkedElements(response);
    assertEquals(0, results.size());
}

Example 57 with Element

use of uk.gov.gchq.gaffer.data.element.Element in project Gaffer by gchq.

the class LoadAndQuery2 method run.

public CloseableIterable<Edge> run() throws OperationException {
    // [user] Create a user
    // ---------------------------------------------------------
    final User user = new User("user01");
    // ---------------------------------------------------------
    // [generate] Create some edges from the data file using our data generator class
    // ---------------------------------------------------------
    final List<Element> elements = new ArrayList<>();
    final DataGenerator2 dataGenerator = new DataGenerator2();
    for (final String s : DataUtils.loadData(getData())) {
        elements.add(dataGenerator.getElement(s));
    }
    // ---------------------------------------------------------
    log("Elements generated from the data file.");
    for (final Element element : elements) {
        log("GENERATED_EDGES", element.toString());
    }
    log("");
    // [graph] Create a graph using our schema and store properties
    // ---------------------------------------------------------
    final Graph graph = new Graph.Builder().addSchemas(getSchemas()).storeProperties(getStoreProperties()).build();
    // ---------------------------------------------------------
    // [add] Add the edges to the graph
    // ---------------------------------------------------------
    final AddElements addElements = new AddElements.Builder().elements(elements).build();
    graph.execute(addElements, user);
    // ---------------------------------------------------------
    log("The elements have been added.\n");
    // [get simple] Get all the edges related to vertex 1
    // ---------------------------------------------------------
    final GetEdges<EntitySeed> getRelatedEdges = new GetEdges.Builder<EntitySeed>().addSeed(new EntitySeed("1")).build();
    final CloseableIterable<Edge> allColoursResults = graph.execute(getRelatedEdges, user);
    // ---------------------------------------------------------
    log("\nAll edges containing vertex 1");
    log("\nNotice that the edges are aggregated within their groups");
    for (final Element e : allColoursResults) {
        log("GET_RELATED_EDGES_RESULT", e.toString());
    }
    // [get] Rerun the previous query with a View to specify which subset of results we want
    // ---------------------------------------------------------
    final View view = new View.Builder().edge("red").build();
    final GetEdges<EntitySeed> getRelatedRedEdges = new GetEdges.Builder<EntitySeed>().addSeed(new EntitySeed("1")).view(view).build();
    final CloseableIterable<Edge> redResults = graph.execute(getRelatedRedEdges, user);
    // ---------------------------------------------------------
    log("\nAll red edges containing vertex 1\n");
    for (final Element e : redResults) {
        log("GET_RELATED_RED_EDGES_RESULT", e.toString());
    }
    return redResults;
}

Example 58 with Element

use of uk.gov.gchq.gaffer.data.element.Element in project Gaffer by gchq.

the class LoadAndQuery3 method run.

public CloseableIterable<Edge> run() throws OperationException {
    // [user] Create a user
    // ---------------------------------------------------------
    final User user = new User("user01");
    // ---------------------------------------------------------
    // [generate] create some edges from the data file using our data generator class
    // ---------------------------------------------------------
    final List<Element> elements = new ArrayList<>();
    final DataGenerator3 dataGenerator = new DataGenerator3();
    for (final String s : DataUtils.loadData(getData())) {
        elements.add(dataGenerator.getElement(s));
    }
    // ---------------------------------------------------------
    log("Elements generated from the data file.");
    for (final Element element : elements) {
        log("GENERATED_EDGES", element.toString());
    }
    log("");
    // [graph] create a graph using our schema and store properties
    // ---------------------------------------------------------
    final Graph graph = new Graph.Builder().addSchemas(getSchemas()).storeProperties(getStoreProperties()).build();
    // ---------------------------------------------------------
    // [add] add the edges to the graph
    // ---------------------------------------------------------
    final AddElements addElements = new AddElements.Builder().elements(elements).build();
    graph.execute(addElements, user);
    // ---------------------------------------------------------
    log("The elements have been added.\n");
    log("\nAll edges containing the vertex 1. The counts have been aggregated\n");
    // [get simple] get all the edges that contain the vertex "1"
    // ---------------------------------------------------------
    final GetEdges<EntitySeed> getRelatedEdges = new GetEdges.Builder<EntitySeed>().addSeed(new EntitySeed("1")).build();
    final CloseableIterable<Edge> results = graph.execute(getRelatedEdges, user);
    // ---------------------------------------------------------
    for (final Element e : results) {
        log("GET_RELATED_EDGES_RESULT", e.toString());
    }
    // [get] rerun previous query with a filter to return only edges with a count more than 3
    // ---------------------------------------------------------
    final View view = new View.Builder().edge("data", new ViewElementDefinition.Builder().preAggregationFilter(new ElementFilter.Builder().select("count").execute(new IsMoreThan(3)).build()).build()).build();
    final GetEdges<EntitySeed> getRelatedEdgesWithCountMoreThan3 = new GetEdges.Builder<EntitySeed>().addSeed(new EntitySeed("1")).view(view).build();
    final CloseableIterable<Edge> filteredResults = graph.execute(getRelatedEdgesWithCountMoreThan3, user);
    // ---------------------------------------------------------
    log("\nAll edges containing the vertex 1 with an aggregated count more than than 3\n");
    for (final Element e : filteredResults) {
        log("GET_RELATED_ELEMENTS_WITH_COUNT_MORE_THAN_3_RESULT", e.toString());
    }
    return filteredResults;
}

Example 59 with Element

use of uk.gov.gchq.gaffer.data.element.Element in project Gaffer by gchq.

the class LoadAndQuery4 method run.

public CloseableIterable<Edge> run() throws OperationException {
    // [user] Create a user
    // ---------------------------------------------------------
    final User user = new User("user01");
    // ---------------------------------------------------------
    // [generate] Create some edges from the data file using our data generator class
    // ---------------------------------------------------------
    final List<Element> elements = new ArrayList<>();
    final DataGenerator4 dataGenerator = new DataGenerator4();
    for (final String s : DataUtils.loadData(getData())) {
        elements.add(dataGenerator.getElement(s));
    }
    // ---------------------------------------------------------
    log("Elements generated from the data file.");
    for (final Element element : elements) {
        log("GENERATED_EDGES", element.toString());
    }
    log("");
    // [graph] create a graph using our schema and store properties
    // ---------------------------------------------------------
    final Graph graph = new Graph.Builder().addSchemas(getSchemas()).storeProperties(getStoreProperties()).build();
    // ---------------------------------------------------------
    // [add] add the edges to the graph
    final AddElements addElements = new AddElements.Builder().elements(elements).build();
    graph.execute(addElements, user);
    // ---------------------------------------------------------
    log("The elements have been added.\n");
    // [get simple] get all the edges that contain the vertex "1"
    // ---------------------------------------------------------
    final GetEdges<EntitySeed> getRelatedEdges = new GetEdges.Builder<EntitySeed>().addSeed(new EntitySeed("1")).build();
    final CloseableIterable<Edge> results = graph.execute(getRelatedEdges, user);
    // ---------------------------------------------------------
    log("\nAll edges containing the vertex 1. The counts and 'things' have been aggregated\n");
    for (final Element e : results) {
        log("GET_RELATED_EDGES_RESULT", e.toString());
    }
    // rerun previous query but calculate a mean
    // [transform] Create a mean transient property using an element transformer
    // ---------------------------------------------------------
    final ElementTransformer mean = new ElementTransformer.Builder().select("thing", "count").project("mean").execute(new MeanTransform()).build();
    // ---------------------------------------------------------
    // [get] Add the element transformer to the view and run the query
    // ---------------------------------------------------------
    final View view = new View.Builder().edge("data", new ViewElementDefinition.Builder().transientProperty("mean", Float.class).transformer(mean).build()).build();
    final GetEdges<EntitySeed> getRelatedEdgesWithMean = new GetEdges.Builder<EntitySeed>().addSeed(new EntitySeed("1")).view(view).build();
    final CloseableIterable<Edge> transientResults = graph.execute(getRelatedEdgesWithMean, user);
    // ---------------------------------------------------------
    log("\nWe can add a new property to the edges that is calculated from the aggregated values of other properties\n");
    for (final Element e : transientResults) {
        log("GET_RELATED_ELEMENTS_WITH_MEAN_RESULT", e.toString());
    }
    return transientResults;
}

Example 60 with Element

use of uk.gov.gchq.gaffer.data.element.Element in project Gaffer by gchq.

the class LoadAndQuery5 method run.

public CloseableIterable<Edge> run() throws OperationException {
    // [user] Create a user
    // ---------------------------------------------------------
    final User basicUser = new User("basicUser");
    // ---------------------------------------------------------
    // [generate] create some edges from the data file using our data generator class
    // ---------------------------------------------------------
    final List<Element> elements = new ArrayList<>();
    final DataGenerator5 dataGenerator = new DataGenerator5();
    for (final String s : DataUtils.loadData(getData())) {
        elements.add(dataGenerator.getElement(s));
    }
    // ---------------------------------------------------------
    log("Elements generated from the data file.");
    for (final Element element : elements) {
        log("GENERATED_EDGES", element.toString());
    }
    log("");
    // [graph] create a graph using our schema and store properties
    // ---------------------------------------------------------
    final Graph graph = new Graph.Builder().addSchemas(getSchemas()).storeProperties(getStoreProperties()).build();
    // ---------------------------------------------------------
    // [add] add the edges to the graph
    // ---------------------------------------------------------
    final AddElements addElements = new AddElements.Builder().elements(elements).build();
    graph.execute(addElements, basicUser);
    // ---------------------------------------------------------
    log("The elements have been added.\n");
    log("\nNow run a simple query to get edges\n");
    // [get simple] get all the edges that contain the vertex "1"
    // ---------------------------------------------------------
    final GetEdges<EntitySeed> getEdges = new GetEdges.Builder<EntitySeed>().addSeed(new EntitySeed("1")).build();
    final CloseableIterable<Edge> resultsWithBasicUser = graph.execute(getEdges, basicUser);
    // ---------------------------------------------------------
    for (final Element e : resultsWithBasicUser) {
        log("GET_RELATED_EDGES_RESULT", e.toString());
    }
    log("We get nothing back");
    log("\nGet edges with the public visibility. We shouldn't see any of the private ones.\n");
    // [get public] get all the edges that contain the vertex "1"
    // ---------------------------------------------------------
    final User publicUser = new User.Builder().userId("publicUser").dataAuth("public").build();
    final GetEdges<EntitySeed> getPublicRelatedEdges = new GetEdges.Builder<EntitySeed>().addSeed(new EntitySeed("1")).build();
    final CloseableIterable<Edge> publicResults = graph.execute(getPublicRelatedEdges, publicUser);
    // ---------------------------------------------------------
    for (final Element e : publicResults) {
        log("GET_PUBLIC_RELATED_EDGES_RESULT", e.toString());
    }
    log("\nGet edges with the private visibility. We should get the public edges too.\n");
    // [get private] get all the edges that contain the vertex "1"
    // ---------------------------------------------------------
    final User privateUser = new User.Builder().userId("privateUser").dataAuth("private").build();
    final GetEdges<EntitySeed> getPrivateRelatedEdges = new GetEdges.Builder<EntitySeed>().addSeed(new EntitySeed("1")).build();
    final CloseableIterable<Edge> privateResults = graph.execute(getPrivateRelatedEdges, privateUser);
    // ---------------------------------------------------------
    for (final Element e : privateResults) {
        log("GET_PRIVATE_RELATED_EDGES_RESULT", e.toString());
    }
    return publicResults;
}