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SQLiteConnectionWrapper.cs
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SQLiteConnectionWrapper.cs
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// Another piece in the puzzle.
//
// Author:
// Doron Tohar <doron@kimaia.com>
//
using System;
using System.Linq.Expressions;
using SQLite;
using System.Collections.Generic;
using System.Linq;
namespace Kimchi
{
public class SQLiteConnectionWrapper
{
readonly SQLiteConnection db;
public SQLiteConnection WrappedConnection { get { return db; } }
public SQLiteConnectionWrapper(SQLiteConnection db)
{
this.db = db;
}
public virtual void Commit()
{
// do nothing
}
public virtual void Rollback(Exception e)
{
// do nothing
}
public string GetTableName<TEntity>() where TEntity: new()
{
return db.GetMapping<TEntity>().TableName;
}
public int DeleteAll<TEntity>(Expression<Func<TEntity, bool>> predicate) where TEntity: new()
{
var entities = db.Table<TEntity>().Where(predicate).ToList();
foreach (var entity in entities)
{
db.Delete(entity);
if (entity is IEntityWithAssociations)
{
((IEntityWithAssociations)entity).AfterDelete(this);
}
}
return entities.Count();
}
public List<TEntity> LoadAll<TEntity>() where TEntity: new()
{
var entities = new List<TEntity>(db.Table<TEntity>());
foreach (var entity in entities)
{
if (entity is IEntityWithAssociations)
{
((IEntityWithAssociations)entity).AfterLoad(this);
}
}
return entities;
}
public void DeleteAll<TEntity>(IEnumerable<TEntity> entities) where TEntity: new()
{
foreach (var entity in entities)
{
db.Delete(entity);
if (entity is IEntityWithAssociations)
{
((IEntityWithAssociations)entity).AfterDelete(this);
}
}
}
public void Delete<TEntity>(TEntity entity) where TEntity: new()
{
db.Delete(entity);
if (entity is IEntityWithAssociations)
{
((IEntityWithAssociations)entity).AfterDelete(this);
}
}
public void DeleteAll<TEntity>() where TEntity: new()
{
var entities = db.Table<TEntity>();
foreach (var entity in entities)
{
if (entity is IEntityWithAssociations)
{
((IEntityWithAssociations)entity).AfterDelete(this);
}
}
db.DeleteAll<TEntity>();
}
public void Insert<TEntity>(TEntity entity) where TEntity: new()
{
if (entity is IEntityWithAssociations)
{
((IEntityWithAssociations)entity).BeforeInsert(this);
}
db.Insert(entity);
if (entity is IEntityWithAssociations)
{
((IEntityWithAssociations)entity).AfterInsert(this);
}
}
public void Update<TEntity>(TEntity entity) where TEntity: new()
{
if (entity is IEntityWithAssociations)
{
((IEntityWithAssociations)entity).BeforeInsert(this);
}
db.Update(entity);
if (entity is IEntityWithAssociations)
{
((IEntityWithAssociations)entity).AfterInsert(this);
}
}
public TEntity Find<TEntity>(object pk) where TEntity: class, new()
{
var entity = db.Find<TEntity>(pk);
if (entity != null)
{
if (entity is IEntityWithAssociations)
{
((IEntityWithAssociations)entity).AfterLoad(this);
}
}
return entity;
}
public TEntity Find<TEntity>(Expression<Func<TEntity, bool>> predicate) where TEntity: class, new()
{
var entity = db.Find<TEntity>(predicate);
if (entity != null)
{
if (entity is IEntityWithAssociations)
{
((IEntityWithAssociations)entity).AfterLoad(this);
}
}
return entity;
}
public IEnumerable<TEntity> FindAll<TEntity>(Expression<Func<TEntity, bool>> predicate) where TEntity: new()
{
var entities = db.Table<TEntity>().Where(predicate).ToList();
foreach (var entity in entities)
{
if (entity is IEntityWithAssociations)
{
((IEntityWithAssociations)entity).AfterLoad(this);
}
}
return entities;
}
public void InsertOrReplace<TEntity>(TEntity entity) where TEntity: Entity
{
if (entity is IEntityWithAssociations)
{
((IEntityWithAssociations)entity).BeforeInsert(this);
}
if (entity.Id == 0)
{
db.Insert(entity);
}
else
{
db.Update(entity);
}
if (entity is IEntityWithAssociations)
{
((IEntityWithAssociations)entity).AfterInsert(this);
}
}
public void InsertOrReplace<TEntity>(TEntity entity, Expression<Func<TEntity, bool>> predicate) where TEntity: Entity, new()
{
if (entity.Id == 0)
{
var existing = db.Find<TEntity>(predicate);
if (existing != null)
{
entity.Id = existing.Id;
}
}
InsertOrReplace(entity);
}
public void InsertAll<TEntity>(IEnumerable<TEntity> entities) where TEntity: new()
{
foreach (var entity in entities)
{
if (entity is IEntityWithAssociations)
{
((IEntityWithAssociations)entity).BeforeInsert(this);
}
Insert(entity);
if (entity is IEntityWithAssociations)
{
((IEntityWithAssociations)entity).AfterInsert(this);
}
}
}
public void InsertOrReplaceAll<TEntity>(IEnumerable<TEntity> entities) where TEntity: Entity, new()
{
foreach (var entity in entities)
{
if (entity is IEntityWithAssociations)
{
((IEntityWithAssociations)entity).BeforeInsert(this);
}
InsertOrReplace(entity);
if (entity is IEntityWithAssociations)
{
((IEntityWithAssociations)entity).AfterInsert(this);
}
}
}
}
}