/// <summary>
/// Gets no of species
/// that matches the search criteria and grid specifications.
/// </summary>
/// <param name="userContext">User context.</param>
/// <param name="searchCriteria">The species observation search criteria.</param>
/// <param name="gridSpecification">The species observation search criteria, GridCellSize and GridCoordinateSystem are the
/// only properties that is used in this method.</param>
/// <param name="coordinateSystem">Coordinate system used in geometry search criteria.</param>
/// <returns>Information about species.</returns>
public IList <IGridCellSpeciesCount> GetGridSpeciesCounts(IUserContext userContext,
ISpeciesObservationSearchCriteria searchCriteria,
IGridSpecification gridSpecification,
ICoordinateSystem coordinateSystem)
{
return(DataSource.GetGridSpeciesCounts(userContext, searchCriteria, gridSpecification, coordinateSystem));
}
public async ValueTask <long> CountAsync(IGridSpecification <TEntity> spec)
{
spec.IsPagingEnabled = false;
var specificationResult = GetQuery(_dbContext.Set <TEntity>(), spec);
return(await ValueTask.FromResult(specificationResult.LongCount()));
}
public async Task <List <TEntity> > FindAsync(IGridSpecification <TEntity> spec)
{
await using var dbContext = _dbContextFactory.CreateDbContext();
var specificationResult = GetQuery(dbContext.Set <TEntity>(), spec);
return(await specificationResult.ToListAsync());
}
public async ValueTask <long> CountAsync(IGridSpecification <TEntity> spec)
{
await using var dbContext = _dbContextFactory.CreateDbContext();
spec.IsPagingEnabled = false;
var specificationResult = GetQuery(dbContext.Set <TEntity>(), spec);
return(specificationResult.LongCount());
}
/// <summary>
/// Gets the grid cell feature statistics combined with species observation counts.
/// </summary>
/// <param name="userContext">User context.</param>
/// <param name="gridSpecification">The grid specification: bounding box, grid cell size, etc.</param>
/// <param name="searchCriteria">The species observation search criteria.</param>
/// <param name="featureStatistics">Information about requested information from a web feature service.</param>
/// <param name="featuresUrl">Address to data in a web feature service.</param>
/// <param name="featureCollectionJson">Feature collection json.</param>
/// <param name="coordinateSystem">Coordinate system used in returned grid.</param>
/// <returns>A list with combined result from GetGridSpeciesCounts() and GetGridCellFeatureStatistics().</returns>
public IList <IGridCellCombinedStatistics> GetGridCellFeatureStatisticsCombinedWithSpeciesObservationCounts(
IUserContext userContext,
IGridSpecification gridSpecification,
ISpeciesObservationSearchCriteria searchCriteria,
FeatureStatisticsSummary featureStatistics,
String featuresUrl,
String featureCollectionJson,
ICoordinateSystem coordinateSystem)
{
return(DataSource.GetGridCellFeatureStatisticsCombinedWithSpeciesObservationCounts(userContext,
gridSpecification,
searchCriteria,
featureStatistics,
featuresUrl,
featureCollectionJson,
coordinateSystem));
}
private static IQueryable <TEntity> GetQuery(IQueryable <TEntity> inputQuery,
IGridSpecification <TEntity> specification)
{
var query = inputQuery;
if (specification.Criterias is not null && specification.Criterias.Count > 0)
{
var expr = specification.Criterias.First();
for (var i = 1; i < specification.Criterias.Count; i++)
{
expr = expr.And(specification.Criterias[i]);
}
query = query.Where(expr);
}
query = specification.Includes.Aggregate(query, (current, include) => current.Include(include));
query = specification.IncludeStrings.Aggregate(query, (current, include) => current.Include(include));
if (specification.OrderBy is not null)
{
query = query.OrderBy(specification.OrderBy);
}
else if (specification.OrderByDescending is not null)
{
query = query.OrderByDescending(specification.OrderByDescending);
}
if (specification.GroupBy is not null)
{
query = query.GroupBy(specification.GroupBy).SelectMany(x => x);
}
if (specification.IsPagingEnabled)
{
query = query.Skip(specification.Skip - 1)
.Take(specification.Take);
}
return(query);
}
/// <summary>
/// Get information about spatial features in a grid representation inside a user supplied bounding box.
/// </summary>
/// /// <param name="userContext">User context.</param>
/// <param name="featureStatistics">Information about what statistics are requested from a web feature
/// service and wich spatial feature type that is to be measured</param>
/// <param name="featuresUrl">String with the requested url.</param>
/// <param name="featureCollectionJson">Feature collection as json string.</param>
/// <param name="gridSpecification">Specifications of requested grid cell size, requested coordinate system
/// and user supplied bounding box.</param>
/// <param name="coordinateSystem">Coordinate system used in geometry search criteria.</param>
/// <returns>Statistical measurements on spatial features in grid format.</returns>
public List <IGridCellFeatureStatistics> GetGridFeatureStatistics(IUserContext userContext,
FeatureStatisticsSummary featureStatistics, String featuresUrl, String featureCollectionJson, IGridSpecification gridSpecification, ICoordinateSystem coordinateSystem)
{
//Todo: Check data for weird combinations like area of point features and such. Use existing check-methods.
return(DataSource.GetGridCellFeatureStatistics(userContext, featureStatistics, featuresUrl, featureCollectionJson, gridSpecification, coordinateSystem));
}
public async Task <List <TEntity> > FindAsync(IGridSpecification <TEntity> spec)
{
var specificationResult = GetQuery(_dbContext.Set <TEntity>(), spec);
return(await specificationResult.ToListAsync());
}
