Examples with Optional com.google.common.base.Optional used on opensource projects

Example 51 with Optional

use of com.google.common.base.Optional in project GeoGig by boundlessgeo.

the class OSMExport method getFeatures.

private Iterator<EntityContainer> getFeatures(String ref) {
    Optional<ObjectId> id = geogig.command(RevParse.class).setRefSpec(ref).call();
    if (!id.isPresent()) {
        return Iterators.emptyIterator();
    }
    LsTreeOp op = geogig.command(LsTreeOp.class).setStrategy(Strategy.DEPTHFIRST_ONLY_FEATURES).setReference(ref);
    if (bbox != null) {
        final Envelope env;
        try {
            env = new Envelope(Double.parseDouble(bbox.get(0)), Double.parseDouble(bbox.get(2)), Double.parseDouble(bbox.get(1)), Double.parseDouble(bbox.get(3)));
        } catch (NumberFormatException e) {
            throw new IllegalArgumentException("Wrong bbox definition");
        }
        Predicate<Bounded> filter = new Predicate<Bounded>() {

            @Override
            public boolean apply(final Bounded bounded) {
                boolean intersects = bounded.intersects(env);
                return intersects;
            }
        };
        op.setBoundsFilter(filter);
    }
    Iterator<NodeRef> iterator = op.call();
    final EntityConverter converter = new EntityConverter();
    Function<NodeRef, EntityContainer> function = new Function<NodeRef, EntityContainer>() {

        @Override
        @Nullable
        public EntityContainer apply(@Nullable NodeRef ref) {
            RevFeature revFeature = geogig.command(RevObjectParse.class).setObjectId(ref.objectId()).call(RevFeature.class).get();
            SimpleFeatureType featureType;
            if (ref.path().startsWith(OSMUtils.NODE_TYPE_NAME)) {
                featureType = OSMUtils.nodeType();
            } else {
                featureType = OSMUtils.wayType();
            }
            SimpleFeatureBuilder featureBuilder = new SimpleFeatureBuilder(featureType);
            RevFeatureType revFeatureType = RevFeatureTypeImpl.build(featureType);
            List<PropertyDescriptor> descriptors = revFeatureType.sortedDescriptors();
            ImmutableList<Optional<Object>> values = revFeature.getValues();
            for (int i = 0; i < descriptors.size(); i++) {
                PropertyDescriptor descriptor = descriptors.get(i);
                Optional<Object> value = values.get(i);
                featureBuilder.set(descriptor.getName(), value.orNull());
            }
            SimpleFeature feature = featureBuilder.buildFeature(ref.name());
            Entity entity = converter.toEntity(feature, null);
            EntityContainer container;
            if (entity instanceof Node) {
                container = new NodeContainer((Node) entity);
            } else {
                container = new WayContainer((Way) entity);
            }
            return container;
        }
    };
    return Iterators.transform(iterator, function);
}

Example 52 with Optional

use of com.google.common.base.Optional in project GeoGig by boundlessgeo.

the class OSMExportPG method runInternal.

/**
     * Executes the export command using the provided options.
     */
@Override
protected void runInternal(GeogigCLI cli) {
    Preconditions.checkNotNull(mappingFile != null, "A data mapping file must be specified");
    final Mapping mapping = Mapping.fromFile(mappingFile);
    List<MappingRule> rules = mapping.getRules();
    checkParameter(!rules.isEmpty(), "No rules are defined in the specified mapping");
    for (final MappingRule rule : mapping.getRules()) {
        Function<Feature, Optional<Feature>> function = new Function<Feature, Optional<Feature>>() {

            @Override
            @Nullable
            public Optional<Feature> apply(@Nullable Feature feature) {
                Optional<Feature> mapped = rule.apply(feature);
                if (mapped.isPresent()) {
                    return Optional.of(mapped.get());
                }
                return Optional.absent();
            }
        };
        SimpleFeatureType outputFeatureType = rule.getFeatureType();
        String path = getOriginTreesFromOutputFeatureType(outputFeatureType);
        DataStore dataStore = null;
        try {
            dataStore = getDataStore();
            String tableName = outputFeatureType.getName().getLocalPart();
            if (Arrays.asList(dataStore.getTypeNames()).contains(tableName)) {
                if (!overwrite) {
                    throw new CommandFailedException("A table named '" + tableName + "'already exists. Use -o to overwrite");
                }
            } else {
                try {
                    dataStore.createSchema(outputFeatureType);
                } catch (IOException e) {
                    throw new CommandFailedException("Cannot create new table in database", e);
                }
            }
            final SimpleFeatureSource featureSource = dataStore.getFeatureSource(tableName);
            if (!(featureSource instanceof SimpleFeatureStore)) {
                throw new CommandFailedException("Could not create feature store. Data source is read only.");
            }
            final SimpleFeatureStore featureStore = (SimpleFeatureStore) featureSource;
            if (overwrite) {
                featureStore.removeFeatures(Filter.INCLUDE);
            }
            ExportOp op = cli.getGeogig().command(ExportOp.class).setFeatureStore(featureStore).setPath(path).setFeatureTypeConversionFunction(function);
            try {
                op.setProgressListener(cli.getProgressListener()).call();
                cli.getConsole().println("OSM data exported successfully to " + tableName);
            } catch (IllegalArgumentException iae) {
                throw new org.locationtech.geogig.cli.InvalidParameterException(iae.getMessage(), iae);
            } catch (GeoToolsOpException e) {
                throw new CommandFailedException("Could not export. Error:" + e.statusCode.name(), e);
            }
        } catch (IOException e) {
            throw new IllegalStateException("Cannot connect to database: " + e.getMessage(), e);
        } finally {
            if (dataStore != null) {
                dataStore.dispose();
            }
        }
    }
}

Example 53 with Optional

use of com.google.common.base.Optional in project GeoGig by boundlessgeo.

the class ImportOpTest method testAlter.

@Test
public void testAlter() throws Exception {
    ImportOp importOp = geogig.command(ImportOp.class);
    importOp.setDataStore(TestHelper.createTestFactory().createDataStore(null));
    importOp.setTable("table1");
    importOp.call();
    importOp.setTable("table2");
    importOp.setDestinationPath("table1");
    importOp.setAlter(true);
    importOp.call();
    Iterator<NodeRef> features = geogig.command(LsTreeOp.class).setStrategy(Strategy.DEPTHFIRST_ONLY_FEATURES).call();
    ArrayList<NodeRef> list = Lists.newArrayList(features);
    assertEquals(3, list.size());
    Optional<RevFeature> feature = geogig.command(RevObjectParse.class).setRefSpec("WORK_HEAD:table1/feature1").call(RevFeature.class);
    assertTrue(feature.isPresent());
    ImmutableList<Optional<Object>> values = feature.get().getValues();
    assertEquals(2, values.size());
    assertTrue(values.get(0).isPresent());
    assertFalse(values.get(1).isPresent());
    TreeSet<ObjectId> set = Sets.newTreeSet();
    for (NodeRef node : list) {
        set.add(node.getMetadataId());
    }
    assertEquals(1, set.size());
    Optional<RevFeatureType> featureType = geogig.command(RevObjectParse.class).setObjectId(set.iterator().next()).call(RevFeatureType.class);
    assertTrue(featureType.isPresent());
    assertEquals("table1", featureType.get().getName().getLocalPart());
    assertEquals("name", featureType.get().sortedDescriptors().get(1).getName().getLocalPart());
}

Example 54 with Optional

use of com.google.common.base.Optional in project GeoGig by boundlessgeo.

the class OSMExportSL method exportRule.

private void exportRule(final MappingRule rule, final GeogigCLI cli) throws IOException {
    Function<Feature, Optional<Feature>> function = new Function<Feature, Optional<Feature>>() {

        @Override
        public Optional<Feature> apply(Feature feature) {
            Optional<Feature> mapped = rule.apply(feature);
            return mapped;
        }
    };
    SimpleFeatureType outputFeatureType = rule.getFeatureType();
    String path = getOriginTreesFromOutputFeatureType(outputFeatureType);
    DataStore dataStore = getDataStore();
    try {
        final String tableName = ensureTableExists(outputFeatureType, dataStore);
        final SimpleFeatureSource source = dataStore.getFeatureSource(tableName);
        if (!(source instanceof SimpleFeatureStore)) {
            throw new CommandFailedException("Could not create feature store.");
        }
        final SimpleFeatureStore store = (SimpleFeatureStore) source;
        if (overwrite) {
            try {
                store.removeFeatures(Filter.INCLUDE);
            } catch (IOException e) {
                throw new CommandFailedException("Error truncating table " + tableName, e);
            }
        }
        ExportOp op = cli.getGeogig().command(ExportOp.class).setFeatureStore(store).setPath(path).setFeatureTypeConversionFunction(function);
        try {
            op.setProgressListener(cli.getProgressListener()).call();
            cli.getConsole().println("OSM data exported successfully to " + tableName);
        } catch (IllegalArgumentException iae) {
            throw new InvalidParameterException(iae.getMessage(), iae);
        } catch (GeoToolsOpException e) {
            throw new CommandFailedException("Could not export. Error:" + e.statusCode.name(), e);
        }
    } finally {
        dataStore.dispose();
    }
}

Example 55 with Optional

use of com.google.common.base.Optional in project double-espresso by JakeWharton.

the class ViewAssertions method matches.

/**
   * Returns a generic {@link ViewAssertion} that asserts that a view exists in the view hierarchy
   * and is matched by the given view matcher.
   */
public static ViewAssertion matches(final Matcher<? super View> viewMatcher) {
    checkNotNull(viewMatcher);
    return new ViewAssertion() {

        @Override
        public void check(Optional<View> view, Optional<NoMatchingViewException> noViewException) {
            StringDescription description = new StringDescription();
            description.appendText("'");
            viewMatcher.describeTo(description);
            if (noViewException.isPresent()) {
                description.appendText(String.format("' check could not be performed because view '%s' was not found.\n", viewMatcher));
                Log.e(TAG, description.toString());
                throw noViewException.get();
            } else {
                // TODO(user): ideally, we should append the matcher used to find the view
                // This can be done in DefaultFailureHandler (just like we currently to with
                // PerformException)
                description.appendText("' doesn't match the selected view.");
                assertThat(description.toString(), view.get(), viewMatcher);
            }
        }
    };
}