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1527 lines (1258 loc) · 52.5 KB
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using System;
using System.Reflection;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using SharpRepository.Repository.Aspects;
using SharpRepository.Repository.Caching;
using SharpRepository.Repository.FetchStrategies;
using SharpRepository.Repository.Helpers;
using SharpRepository.Repository.Queries;
using SharpRepository.Repository.Specifications;
using SharpRepository.Repository.Transactions;
namespace SharpRepository.Repository
{
public abstract partial class RepositoryBase<T, TKey> : IRepository<T, TKey> where T : class
{
protected RepositoryBase(ICachingStrategy<T, TKey> cachingStrategy = null)
{
if (typeof(T) == typeof(TKey))
{
// this check is mainly because of the overloaded Delete methods Delete(T) and Delete(TKey), ambiguous reference if the generics are the same
throw new InvalidOperationException("The repository type and the primary key type can not be the same.");
}
Conventions = new RepositoryConventions();
CachingStrategy = cachingStrategy ?? new NoCachingStrategy<T, TKey>(); // sets QueryManager as well
// the CachePrefix is set to the default convention in the CachingStrategyBase class, the user to override when passing in an already created CachingStrategy class
var entityType = typeof(T);
_typeName = entityType.Name;
_aspects = entityType.GetAllAttributes<RepositoryActionBaseAttribute>(inherit: true)
.Where(x => x.Enabled)
.OrderBy(x => x.Order)
.ToArray();
_repositoryActionContext = new RepositoryActionContext<T, TKey>(this);
RunAspect(aspect => aspect.OnInitialized(_repositoryActionContext));
}
// the caching strategy used
private ICachingStrategy<T, TKey> _cachingStrategy;
// the query manager uses the caching strategy to determine if it should check the cache or run the query
protected QueryManager<T, TKey> QueryManager;
// conventions
public IRepositoryConventions Conventions { get; set; }
private readonly RepositoryActionContext<T, TKey> _repositoryActionContext;
private readonly RepositoryActionBaseAttribute[] _aspects;
public Type EntityType
{
get { return typeof (T); }
}
public Type KeyType
{
get { return typeof(TKey); }
}
// just the type name, used to find the primary key if it is [TypeName]Id
private readonly string _typeName;
protected string TypeName
{
get { return _typeName; }
}
public bool CacheUsed
{
get { return QueryManager.CacheUsed; }
}
public IBatch<T> BeginBatch()
{
// Return the privately scoped batch via the publicly available interface.
// This ensures that a repository alone can initiate a new batch.
return new Batch(this);
}
public IDisabledCache DisableCaching()
{
// Return the privately scoped batch via the publicly available interface.
// This ensures that a repository alone can initiate a new batch.
return new DisabledCache(this);
}
public void ClearCache()
{
CachingStrategy.ClearAll();
}
private bool BatchMode { get; set; }
public ICachingStrategy<T, TKey> CachingStrategy
{
get { return _cachingStrategy; }
set
{
_cachingStrategy = value ?? new NoCachingStrategy<T, TKey>();
QueryManager = new QueryManager<T, TKey>(_cachingStrategy)
{
CacheEnabled = !(_cachingStrategy is NoCachingStrategy<T, TKey>)
};
}
}
public bool CachingEnabled
{
get { return QueryManager.CacheEnabled; }
set { QueryManager.CacheEnabled = value; }
}
protected abstract IQueryable<T> BaseQuery(IFetchStrategy<T> fetchStrategy = null);
public abstract IQueryable<T> AsQueryable();
// These are the actual implementation that the derived class needs to implement
protected abstract IQueryable<T> GetAllQuery();
protected abstract IQueryable<T> GetAllQuery(IQueryOptions<T> queryOptions);
public IEnumerable<T> GetAll()
{
return GetAll(null);
}
public IEnumerable<T> GetAll(IQueryOptions<T> queryOptions)
{
try
{
var context = new RepositoryQueryMultipleContext<T, TKey>(this, null, queryOptions);
if (!RunAspect(attribute => attribute.OnGetAllExecuting(context)))
return context.Results;
// if the aspect altered the specificaiton then we need to run a FindAll with that specification
var results = context.Specification == null
? QueryManager.ExecuteGetAll(
() => GetAllQuery(context.QueryOptions).ToList(),
null,
context.QueryOptions
)
: QueryManager.ExecuteFindAll(
() => FindAllQuery(context.Specification, context.QueryOptions).ToList(),
context.Specification,
null,
context.QueryOptions
);
context.Results = results;
RunAspect(attribute => attribute.OnGetAllExecuted(context));
return context.Results;
}
catch (Exception ex)
{
Error(ex);
throw;
}
}
public IEnumerable<TResult> GetAll<TResult>(Expression<Func<T, TResult>> selector, IQueryOptions<T> queryOptions = null)
{
try
{
if (selector == null) throw new ArgumentNullException("selector");
var context = new RepositoryQueryMultipleContext<T, TKey, TResult>(this, null, queryOptions, selector);
if (!RunAspect(attribute => attribute.OnGetAllExecuting(context)))
return context.Results;
// if the aspect altered the specificaiton then we need to run a FindAll with that specification
var results = context.Specification == null
? QueryManager.ExecuteGetAll(
() => GetAllQuery(context.QueryOptions).Select(context.Selector).ToList(),
context.Selector,
context.QueryOptions
)
: QueryManager.ExecuteFindAll(
() => FindAllQuery(context.Specification, context.QueryOptions).Select(context.Selector).ToList(),
context.Specification,
context.Selector,
context.QueryOptions
);
context.Results = results;
RunAspect(attribute => attribute.OnGetAllExecuted(context));
return context.Results;
}
catch (Exception ex)
{
Error(ex);
throw;
}
}
// These are the actual implementation that the derived class needs to implement
protected abstract T GetQuery(TKey key);
public abstract IRepositoryQueryable<TResult> Join<TJoinKey, TInner, TResult>(IRepositoryQueryable<TInner> innerRepository, Expression<Func<T, TJoinKey>> outerKeySelector, Expression<Func<TInner, TJoinKey>> innerKeySelector, Expression<Func<T, TInner, TResult>> resultSelector)
where TInner : class
where TResult : class;
public T Get(TKey key)
{
try
{
var context = new RepositoryGetContext<T, TKey>(this, key);
if (!RunAspect(attribute => attribute.OnGetExecuting(context)))
return context.Result;
var result = QueryManager.ExecuteGet(
() => GetQuery(context.Id),
context.Id
);
context.Result = result;
RunAspect(attribute => attribute.OnGetExecuted(context));
return context.Result;
}
catch (Exception ex)
{
Error(ex);
throw;
}
}
public TResult Get<TResult>(TKey key, Expression<Func<T, TResult>> selector)
{
try
{
if (selector == null) throw new ArgumentNullException("selector");
var context = new RepositoryGetContext<T, TKey, TResult>(this, key, selector);
if (!RunAspect(attribute => attribute.OnGetExecuting(context)))
return context.Result;
// get the full entity, possibly from cache
var result = QueryManager.ExecuteGet(
() => GetQuery(context.Id),
context.Id
);
// return the entity with the selector applied to it
var selectedResult = result == null
? default(TResult)
: new[] {result}.AsQueryable().Select(selector).First();
context.Result = selectedResult;
RunAspect(attribute => attribute.OnGetExecuted(context));
return context.Result;
}
catch (Exception ex)
{
Error(ex);
throw;
}
}
public virtual IEnumerable<T> GetMany(params TKey[] keys)
{
return GetMany(keys.ToList());
}
public virtual IEnumerable<T> GetMany(IEnumerable<TKey> keys)
{
return FindAll(ByMultipleKeysSpecification(keys));
}
public virtual IEnumerable<TResult> GetMany<TResult>(Expression<Func<T, TResult>> selector, params TKey[] keys)
{
return GetMany(keys.ToList(), selector);
}
public virtual IEnumerable<TResult> GetMany<TResult>(IEnumerable<TKey> keys, Expression<Func<T, TResult>> selector)
{
return FindAll(ByMultipleKeysSpecification(keys), selector);
}
public virtual IDictionary<TKey, T> GetManyAsDictionary(params TKey[] keys)
{
return GetManyAsDictionary(keys.ToList());
}
public virtual IDictionary<TKey, T> GetManyAsDictionary(IEnumerable<TKey> keys)
{
return GetMany(keys).ToDictionary(GetPrimaryKey);
}
public bool Exists(TKey key)
{
T entity;
return TryGet(key, out entity);
}
public bool TryGet(TKey key, out T entity)
{
entity = default(T);
try
{
entity = Get(key);
return entity != null;
}
catch (Exception)
{
return false;
}
}
public bool TryGet<TResult>(TKey key, Expression<Func<T, TResult>> selector, out TResult entity)
{
if (selector == null) throw new ArgumentNullException("selector");
entity = default(TResult);
try
{
entity = Get(key, selector);
return entity.Equals(default(TResult));
}
catch (Exception)
{
return false;
}
}
// These are the actual implementation that the derived class needs to implement
protected abstract IQueryable<T> FindAllQuery(ISpecification<T> criteria);
protected abstract IQueryable<T> FindAllQuery(ISpecification<T> criteria, IQueryOptions<T> queryOptions);
public IEnumerable<T> FindAll(ISpecification<T> criteria, IQueryOptions<T> queryOptions = null)
{
if (criteria == null) return GetAll(queryOptions);
try
{
var context = new RepositoryQueryMultipleContext<T, TKey>(this, criteria, queryOptions);
if (!RunAspect(attribute => attribute.OnFindAllExecuting(context)))
return context.Results;
var results = QueryManager.ExecuteFindAll(
() => FindAllQuery(context.Specification, context.QueryOptions).ToList(),
context.Specification,
null,
context.QueryOptions
);
context.Results = results;
RunAspect(attribute => attribute.OnFindAllExecuted(context));
return context.Results;
}
catch (Exception ex)
{
Error(ex);
throw;
}
}
public IEnumerable<TResult> FindAll<TResult>(ISpecification<T> criteria, Expression<Func<T, TResult>> selector, IQueryOptions<T> queryOptions = null)
{
if (criteria == null) return GetAll(selector, queryOptions);
try
{
if (selector == null) throw new ArgumentNullException("selector");
var context = new RepositoryQueryMultipleContext<T, TKey, TResult>(this, criteria, queryOptions, selector);
if (!RunAspect(attribute => attribute.OnFindAllExecuting(context)))
return context.Results;
var results = QueryManager.ExecuteFindAll(
() => FindAllQuery(context.Specification, context.QueryOptions).Select(context.Selector).ToList(),
context.Specification,
context.Selector,
context.QueryOptions
);
context.Results = results;
RunAspect(attribute => attribute.OnFindAllExecuted(context));
return context.Results;
}
catch (Exception ex)
{
Error(ex);
throw;
}
}
public IEnumerable<T> FindAll(Expression<Func<T, bool>> predicate, IQueryOptions<T> queryOptions = null)
{
if (predicate == null) return GetAll(queryOptions);
try
{
return FindAll(new Specification<T>(predicate), queryOptions);
}
catch (Exception ex)
{
Error(ex);
throw;
}
}
public IEnumerable<TResult> FindAll<TResult>(Expression<Func<T, bool>> predicate, Expression<Func<T, TResult>> selector, IQueryOptions<T> queryOptions = null)
{
if (selector == null) throw new ArgumentNullException("selector");
if (predicate == null) return GetAll(selector, queryOptions);
try
{
return FindAll(new Specification<T>(predicate), selector, queryOptions);
}
catch (Exception ex)
{
Error(ex);
throw;
}
}
// These are the actual implementation that the derived class needs to implement
protected abstract T FindQuery(ISpecification<T> criteria);
protected abstract T FindQuery(ISpecification<T> criteria, IQueryOptions<T> queryOptions);
public T Find(ISpecification<T> criteria, IQueryOptions<T> queryOptions = null)
{
try
{
if (criteria == null) throw new ArgumentNullException("criteria");
var context = new RepositoryQuerySingleContext<T, TKey>(this, criteria, queryOptions);
if (!RunAspect(attribute => attribute.OnFindExecuting(context)))
return context.Result;
var item = QueryManager.ExecuteFind(
() => FindQuery(context.Specification, context.QueryOptions),
context.Specification,
null,
null
);
context.Result = item;
RunAspect(attribute => attribute.OnFindExecuted(context));
return context.Result;
}
catch (Exception ex)
{
Error(ex);
throw;
}
}
public TResult Find<TResult>(ISpecification<T> criteria, Expression<Func<T, TResult>> selector, IQueryOptions<T> queryOptions = null)
{
try
{
if (criteria == null) throw new ArgumentNullException("criteria");
if (selector == null) throw new ArgumentNullException("selector");
var context = new RepositoryQuerySingleContext<T, TKey, TResult>(this, criteria, queryOptions, selector);
if (!RunAspect(attribute => attribute.OnFindExecuting(context)))
return context.Result;
var item = QueryManager.ExecuteFind(
() =>
{
var result = FindQuery(context.Specification, context.QueryOptions);
if (result == null)
return default(TResult);
var results = new[] { result };
return results.AsQueryable().Select(context.Selector).First();
},
context.Specification,
context.Selector,
null
);
context.Result = item;
RunAspect(attribute => attribute.OnFindExecuted(context));
return context.Result;
}
catch (Exception ex)
{
Error(ex);
throw;
}
}
public bool Exists(ISpecification<T> criteria)
{
T entity;
return TryFind(criteria, out entity);
}
public bool TryFind(ISpecification<T> criteria, out T entity)
{
return TryFind(criteria, ( IQueryOptions<T>)null, out entity);
}
public bool TryFind(ISpecification<T> criteria, IQueryOptions<T> queryOptions, out T entity)
{
entity = null;
try
{
entity = Find(criteria, queryOptions);
return entity != null;
}
catch (Exception)
{
return false;
}
}
public bool TryFind<TResult>(ISpecification<T> criteria, Expression<Func<T, TResult>> selector, out TResult entity)
{
return TryFind(criteria, selector, null, out entity);
}
public bool TryFind<TResult>(ISpecification<T> criteria, Expression<Func<T, TResult>> selector, IQueryOptions<T> queryOptions, out TResult entity)
{
if (selector == null) throw new ArgumentNullException("selector");
entity = default(TResult);
try
{
entity = Find(criteria, selector, queryOptions);
return !entity.Equals(default(TResult));
}
catch (Exception)
{
return false;
}
}
public T Find(Expression<Func<T, bool>> predicate, IQueryOptions<T> queryOptions = null)
{
try
{
if (predicate == null) throw new ArgumentNullException("predicate");
return Find(new Specification<T>(predicate), queryOptions);
}
catch (Exception ex)
{
Error(ex);
throw;
}
}
public TResult Find<TResult>(Expression<Func<T, bool>> predicate, Expression<Func<T, TResult>> selector, IQueryOptions<T> queryOptions = null)
{
try
{
if (predicate == null) throw new ArgumentNullException("predicate");
if (selector == null) throw new ArgumentNullException("selector");
return Find(new Specification<T>(predicate), selector, queryOptions);
}
catch (Exception ex)
{
Error(ex);
throw;
}
}
public bool Exists(Expression<Func<T, bool>> predicate)
{
T entity;
return TryFind(predicate, out entity);
}
public bool TryFind(Expression<Func<T, bool>> predicate, out T entity)
{
return TryFind(predicate, (IQueryOptions<T>)null, out entity);
}
public bool TryFind(Expression<Func<T, bool>> predicate, IQueryOptions<T> queryOptions, out T entity)
{
entity = null;
try
{
entity = Find(predicate, queryOptions);
return entity != null;
}
catch (Exception)
{
return false;
}
}
public bool TryFind<TResult>(Expression<Func<T, bool>> predicate, Expression<Func<T, TResult>> selector, out TResult entity)
{
return TryFind(predicate, selector, null, out entity);
}
public bool TryFind<TResult>(Expression<Func<T, bool>> predicate, Expression<Func<T, TResult>> selector, IQueryOptions<T> queryOptions, out TResult entity)
{
if (selector == null) throw new ArgumentNullException("selector");
entity = default(TResult);
try
{
entity = Find(predicate, selector, queryOptions);
return !entity.Equals(default(TResult));
}
catch (Exception)
{
return false;
}
}
// TODO: allowing ordering of grouped results
public IEnumerable<TResult> GroupBy<TGroupKey, TResult>(Expression<Func<T, TGroupKey>> keySelector, Expression<Func<IGrouping<TGroupKey, T>, TResult>> resultSelector)
{
return GroupBy((ISpecification<T>)null, keySelector, resultSelector);
}
public virtual IEnumerable<TResult> GroupBy<TGroupKey, TResult>(ISpecification<T> criteria, Expression<Func<T, TGroupKey>> keySelector, Expression<Func<IGrouping<TGroupKey, T>, TResult>> resultSelector)
{
return QueryManager.ExecuteGroup(
() =>
{
var query = criteria == null ? BaseQuery() : BaseQuery().Where(criteria.Predicate);
// if (queryOptions != null)
// query = queryOptions.Apply(query);
return query.GroupBy(keySelector).OrderBy(x => x.Key).Select(resultSelector).ToList();
},
keySelector,
resultSelector,
criteria
);
}
public IEnumerable<TResult> GroupBy<TGroupKey, TResult>(Expression<Func<T, bool>> predicate, Expression<Func<T, TGroupKey>> keySelector, Expression<Func<IGrouping<TGroupKey, T>, TResult>> resultSelector)
{
return GroupBy(predicate == null ? null : new Specification<T>(predicate), keySelector, resultSelector);
}
public long LongCount()
{
return LongCount((ISpecification<T>)null);
}
public virtual long LongCount(ISpecification<T> criteria)
{
return QueryManager.ExecuteLongCount(
() => criteria == null ? BaseQuery().LongCount() : BaseQuery().LongCount(criteria.Predicate),
criteria
);
}
public long LongCount(Expression<Func<T, bool>> predicate)
{
return LongCount(predicate == null ? null : new Specification<T>(predicate));
}
public int Count()
{
return Count((ISpecification<T>)null);
}
public virtual int Count(ISpecification<T> criteria)
{
return QueryManager.ExecuteCount(
() => criteria == null ? BaseQuery().Count() : BaseQuery().Count(criteria.Predicate),
criteria
);
}
public int Count(Expression<Func<T, bool>> predicate)
{
return Count(predicate == null ? null : new Specification<T>(predicate));
}
public int Sum(Expression<Func<T, int>> selector)
{
return Sum((ISpecification<T>)null, selector);
}
public virtual int Sum(ISpecification<T> criteria, Expression<Func<T, int>> selector)
{
return QueryManager.ExecuteSum(
() => criteria == null ? BaseQuery().Sum(selector) : BaseQuery().Where(criteria.Predicate).Sum(selector),
selector,
criteria
);
}
public int Sum(Expression<Func<T, bool>> predicate, Expression<Func<T, int>> selector)
{
return Sum(predicate == null ? null : new Specification<T>(predicate), selector);
}
public int? Sum(Expression<Func<T, int?>> selector)
{
return Sum((ISpecification<T>)null, selector);
}
public virtual int? Sum(ISpecification<T> criteria, Expression<Func<T, int?>> selector)
{
return QueryManager.ExecuteSum(
() => criteria == null ? BaseQuery().Sum(selector) : BaseQuery().Where(criteria.Predicate).Sum(selector),
selector,
criteria
);
}
public int? Sum(Expression<Func<T, bool>> predicate, Expression<Func<T, int?>> selector)
{
return Sum(predicate == null ? null : new Specification<T>(predicate), selector);
}
public long Sum(Expression<Func<T, long>> selector)
{
return Sum((ISpecification<T>)null, selector);
}
public virtual long Sum(ISpecification<T> criteria, Expression<Func<T, long>> selector)
{
return QueryManager.ExecuteSum(
() => criteria == null ? BaseQuery().Sum(selector) : BaseQuery().Where(criteria.Predicate).Sum(selector),
selector,
criteria
);
}
public long Sum(Expression<Func<T, bool>> predicate, Expression<Func<T, long>> selector)
{
return Sum(predicate == null ? null : new Specification<T>(predicate), selector);
}
public long? Sum(Expression<Func<T, long?>> selector)
{
return Sum((ISpecification<T>)null, selector);
}
public virtual long? Sum(ISpecification<T> criteria, Expression<Func<T, long?>> selector)
{
return QueryManager.ExecuteSum(
() => criteria == null ? BaseQuery().Sum(selector) : BaseQuery().Where(criteria.Predicate).Sum(selector),
selector,
criteria
);
}
public long? Sum(Expression<Func<T, bool>> predicate, Expression<Func<T, long?>> selector)
{
return Sum(predicate == null ? null : new Specification<T>(predicate), selector);
}
public decimal Sum(Expression<Func<T, decimal>> selector)
{
return Sum((ISpecification<T>)null, selector);
}
public virtual decimal Sum(ISpecification<T> criteria, Expression<Func<T, decimal>> selector)
{
return QueryManager.ExecuteSum(
() => criteria == null ? BaseQuery().Sum(selector) : BaseQuery().Where(criteria.Predicate).Sum(selector),
selector,
criteria
);
}
public decimal Sum(Expression<Func<T, bool>> predicate, Expression<Func<T, decimal>> selector)
{
return Sum(predicate == null ? null : new Specification<T>(predicate), selector);
}
public decimal? Sum(Expression<Func<T, decimal?>> selector)
{
return Sum((ISpecification<T>)null, selector);
}
public virtual decimal? Sum(ISpecification<T> criteria, Expression<Func<T, decimal?>> selector)
{
return QueryManager.ExecuteSum(
() => criteria == null ? BaseQuery().Sum(selector) : BaseQuery().Where(criteria.Predicate).Sum(selector),
selector,
criteria
);
}
public decimal? Sum(Expression<Func<T, bool>> predicate, Expression<Func<T, decimal?>> selector)
{
return Sum(predicate == null ? null : new Specification<T>(predicate), selector);
}
public double Sum(Expression<Func<T, double>> selector)
{
return Sum((ISpecification<T>)null, selector);
}
public virtual double Sum(ISpecification<T> criteria, Expression<Func<T, double>> selector)
{
return QueryManager.ExecuteSum(
() => criteria == null ? BaseQuery().Sum(selector) : BaseQuery().Where(criteria.Predicate).Sum(selector),
selector,
criteria
);
}
public double Sum(Expression<Func<T, bool>> predicate, Expression<Func<T, double>> selector)
{
return Sum(predicate == null ? null : new Specification<T>(predicate), selector);
}
public double? Sum(Expression<Func<T, double?>> selector)
{
return Sum((ISpecification<T>)null, selector);
}
public virtual double? Sum(ISpecification<T> criteria, Expression<Func<T, double?>> selector)
{
return QueryManager.ExecuteSum(
() => criteria == null ? BaseQuery().Sum(selector) : BaseQuery().Where(criteria.Predicate).Sum(selector),
selector,
criteria
);
}
public double? Sum(Expression<Func<T, bool>> predicate, Expression<Func<T, double?>> selector)
{
return Sum(predicate == null ? null : new Specification<T>(predicate), selector);
}
public float Sum(Expression<Func<T, float>> selector)
{
return Sum((ISpecification<T>)null, selector);
}
public virtual float Sum(ISpecification<T> criteria, Expression<Func<T, float>> selector)
{
return QueryManager.ExecuteSum(
() => criteria == null ? BaseQuery().Sum(selector) : BaseQuery().Where(criteria.Predicate).Sum(selector),
selector,
criteria
);
}
public float Sum(Expression<Func<T, bool>> predicate, Expression<Func<T, float>> selector)
{
return Sum(predicate == null ? null : new Specification<T>(predicate), selector);
}
public float? Sum(Expression<Func<T, float?>> selector)
{
return Sum((ISpecification<T>)null, selector);
}
public virtual float? Sum(ISpecification<T> criteria, Expression<Func<T, float?>> selector)
{
return QueryManager.ExecuteSum(
() => criteria == null ? BaseQuery().Sum(selector) : BaseQuery().Where(criteria.Predicate).Sum(selector),
selector,
criteria
);
}
public float? Sum(Expression<Func<T, bool>> predicate, Expression<Func<T, float?>> selector)
{
return Sum(predicate == null ? null : new Specification<T>(predicate), selector);
}
public double Average(Expression<Func<T, int>> selector)
{
return Average((ISpecification<T>)null, selector);
}
public virtual double Average(ISpecification<T> criteria, Expression<Func<T, int>> selector)
{
return QueryManager.ExecuteAverage(
() => criteria == null ? BaseQuery().Average(selector) : BaseQuery().Where(criteria.Predicate).Average(selector),
selector,
criteria
);
}
public double Average(Expression<Func<T, bool>> predicate, Expression<Func<T, int>> selector)
{
return Average(predicate == null ? null : new Specification<T>(predicate), selector);
}
public double? Average(Expression<Func<T, int?>> selector)
{
return Average((ISpecification<T>)null, selector);
}
public virtual double? Average(ISpecification<T> criteria, Expression<Func<T, int?>> selector)
{
return QueryManager.ExecuteAverage(
() => criteria == null ? BaseQuery().Average(selector) : BaseQuery().Where(criteria.Predicate).Average(selector),
selector,
criteria
);
}
public double? Average(Expression<Func<T, bool>> predicate, Expression<Func<T, int?>> selector)
{
return Average(predicate == null ? null : new Specification<T>(predicate), selector);
}
public double Average(Expression<Func<T, long>> selector)
{
return Average((ISpecification<T>)null, selector);
}
public virtual double Average(ISpecification<T> criteria, Expression<Func<T, long>> selector)
{
return QueryManager.ExecuteAverage(
() => criteria == null ? BaseQuery().Average(selector) : BaseQuery().Where(criteria.Predicate).Average(selector),
selector,
criteria
);
}
public double Average(Expression<Func<T, bool>> predicate, Expression<Func<T, long>> selector)
{
return Average(predicate == null ? null : new Specification<T>(predicate), selector);
}
public double? Average(Expression<Func<T, long?>> selector)
{
return Average((ISpecification<T>)null, selector);
}
public virtual double? Average(ISpecification<T> criteria, Expression<Func<T, long?>> selector)
{
return QueryManager.ExecuteAverage(
() => criteria == null ? BaseQuery().Average(selector) : BaseQuery().Where(criteria.Predicate).Average(selector),
selector,
criteria
);
}
public double? Average(Expression<Func<T, bool>> predicate, Expression<Func<T, long?>> selector)
{
return Average(predicate == null ? null : new Specification<T>(predicate), selector);
}
public decimal Average(Expression<Func<T, decimal>> selector)
{
return Average((ISpecification<T>)null, selector);
}
public virtual decimal Average(ISpecification<T> criteria, Expression<Func<T, decimal>> selector)
{
return QueryManager.ExecuteAverage(
() => criteria == null ? BaseQuery().Average(selector) : BaseQuery().Where(criteria.Predicate).Average(selector),
selector,
criteria
);
}
public decimal Average(Expression<Func<T, bool>> predicate, Expression<Func<T, decimal>> selector)
{
return Average(predicate == null ? null : new Specification<T>(predicate), selector);
}
public decimal? Average(Expression<Func<T, decimal?>> selector)
{
return Average((ISpecification<T>)null, selector);
}
public virtual decimal? Average(ISpecification<T> criteria, Expression<Func<T, decimal?>> selector)
{
return QueryManager.ExecuteAverage(
() => criteria == null ? BaseQuery().Average(selector) : BaseQuery().Where(criteria.Predicate).Average(selector),
selector,
criteria
);
}
public decimal? Average(Expression<Func<T, bool>> predicate, Expression<Func<T, decimal?>> selector)
{
return Average(predicate == null ? null : new Specification<T>(predicate), selector);
}
public double Average(Expression<Func<T, double>> selector)
{
return Average((ISpecification<T>)null, selector);
}
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