mil.nga.geopackage.features.user.FeatureCursor#moveToNext

Source File: FeatureTableIndex.java From geopackage-android with MIT License

5 votes

/**
 * Index the feature rows in the cursor
 *
 * @param tableIndex table index
 * @param cursor     feature cursor
 * @return count, -1 if no results or canceled
 */
private int indexRows(TableIndex tableIndex, FeatureCursor cursor) {

    int count = -1;

    try {
        while ((progress == null || progress.isActive())
                && cursor.moveToNext()) {
            if (count < 0) {
                count++;
            }
            try {
                FeatureRow row = cursor.getRow();
                if (row.isValid()) {
                    boolean indexed = index(tableIndex,
                            row.getId(), row.getGeometry());
                    if (indexed) {
                        count++;
                    }
                    if (progress != null) {
                        progress.addProgress(1);
                    }
                }
            } catch (Exception e) {
                Log.e(FeatureTableIndex.class.getSimpleName(), "Failed to index feature. Table: "
                        + tableIndex.getTableName() + ", Position: " + cursor.getPosition(), e);
            }
        }
    } finally {
        cursor.close();
    }

    return count;
}

Source File: FeatureIndexer.java From geopackage-android with MIT License

5 votes

/**
 * Index the feature rows in the cursor
 *
 * @param geoPackageId GeoPackage id
 * @param cursor       feature cursor
 * @return count, -1 if no results or canceled
 */
private int indexRows(long geoPackageId, FeatureCursor cursor) {

    int count = -1;

    try {
        while ((progress == null || progress.isActive())
                && cursor.moveToNext()) {
            if (count < 0) {
                count++;
            }
            try {
                FeatureRow row = cursor.getRow();
                if (row.isValid()) {
                    boolean indexed = index(geoPackageId, row, false);
                    if (indexed) {
                        count++;
                    }
                    if (progress != null) {
                        progress.addProgress(1);
                    }
                }
            } catch (Exception e) {
                Log.e(FeatureIndexer.class.getSimpleName(), "Failed to index feature. Table: "
                        + featureDao.getTableName() + ", Position: " + cursor.getPosition(), e);
            }
        }
    } finally {
        cursor.close();
    }

    return count;
}

Source File: DefaultFeatureTiles.java From geopackage-android with MIT License

5 votes

/**
 * {@inheritDoc}
 */
@Override
public Bitmap drawTile(int zoom, BoundingBox boundingBox, FeatureCursor cursor) {

    FeatureTileCanvas canvas = new FeatureTileCanvas(tileWidth, tileHeight);

    ProjectionTransform transform = getProjectionToWebMercatorTransform(featureDao.getProjection());
    BoundingBox expandedBoundingBox = expandBoundingBox(boundingBox);

    boolean drawn = false;
    while (cursor.moveToNext()) {
        FeatureRow row = cursor.getRow();
        if (drawFeature(zoom, boundingBox, expandedBoundingBox, transform, canvas, row)) {
            drawn = true;
        }
    }
    cursor.close();

    Bitmap bitmap = null;
    if (drawn) {
        bitmap = canvas.createBitmap();
        bitmap = checkIfDrawn(bitmap);
    } else {
        canvas.recycle();
    }

    return bitmap;
}