- Based on Abp module system, perfect integration Abp framework.
- Support for custom primary key (value type, reference type).
- Automating the assignment of Code,Level,FullName extends other attributes of the entity.
- Efficient management of entities based on Code, Level features.
- Suitable for managing a variety of tree structure entities, such as: region, organization, category, industry and other entities with parent-child Entity.
Install-Package Abp.GeneralTree
dotnet add package Abp.GeneralTreeFirst you need to add the dependency to your module:
[DependsOn(typeof(GeneralTreeModule))]
public class YourProjectModule : AbpModule
{
//...
}GeneralTree provides a generic IGeneralTree interface, which inherits this interface, passing in generic parameter entities and primary keys (primary keys can be value types and reference types)
Value type
public interface IGeneralTree<TTree, TPrimaryKey> : IEntity<TPrimaryKey>
where TPrimaryKey : struct
{
string Name { get; set; }
string FullName { get; set; }
string Code { get; set; }
int Level { get; set; }
TTree Parent { get; set; }
TPrimaryKey? ParentId { get; set; }
ICollection<TTree> Children { get; set; }
}Reference type
public interface IGeneralTreeWithReferenceType<TTree, TPrimaryKey> : IEntity<TPrimaryKey>
where TPrimaryKey : class
{
string Name { get; set; }
string FullName { get; set; }
string Code { get; set; }
int Level { get; set; }
TTree Parent { get; set; }
TPrimaryKey ParentId { get; set; }
ICollection<TTree> Children { get; set; }
}Take the Region entity as an example:
public class Region : Entity<long>, IGeneralTree<Region, long>
{
public virtual string Name { get; set; }
public virtual string FullName { get; set; }
public virtual string Code { get; set; }
public virtual int Level { get; set; }
public virtual Region Parent { get; set; }
public virtual long? ParentId { get; set; }
public virtual ICollection<Region> Children { get; set; }
}Entities implement properties under generic interfaces, and GeneralTree automatically maintains these properties (FullName, Code, Level, ParentId...)
To create, update, move, delete, etc., use IGeneralTreeManager<TTree, TPrimaryKey>, and the generic parameters of the interface are the same as above.
We first initialize some regional information.
var beijing = new Region
{
Name = "beijing"
};
await _generalRegionTreeManager.CreateAsync(beijing);At this time, the entity information of beijing is as follows:
| Id | Name | FullName | Code | Level | ParentId |
|---|---|---|---|---|---|
| 1 | beijing | beijing | 00001 | 1 | NULL |
GeneralTree automatically maintains the modified properties. It provides the basis for efficient management later.
Add some areas again.
var beijing = new Region
{
Name = "beijing"
};
await _generalRegionTreeManager.CreateAsync(beijing);
await CurrentUnitOfWork.SaveChangesAsync();
var dongcheng = new Region
{
Name = "dongcheng",
ParentId = beijing.Id
};
var xicheng = new Region
{
Name = "xicheng",
ParentId = beijing.Id
};
await _generalRegionTreeManager.CreateAsync(dongcheng);
await _generalRegionTreeManager.CreateAsync(xicheng);
var hebei = new Region
{
Name = "hebei"
};
await _generalRegionTreeManager.CreateAsync(hebei);
await CurrentUnitOfWork.SaveChangesAsync();
var shijianzhuang = new Region
{
Name = "shijianzhuang",
ParentId = hebei.Id
};
await _generalRegionTreeManager.CreateAsync(shijianzhuang);
await CurrentUnitOfWork.SaveChangesAsync();
var changanqu = new Region
{
Name = "changanqu",
ParentId = shijianzhuang.Id
};
var qiaoxiqu = new Region
{
Name = "qiaoxiqu",
ParentId = shijianzhuang.Id
};
await _generalRegionTreeManager.CreateAsync(changanqu);
await _generalRegionTreeManager.CreateAsync(qiaoxiqu);The results are as follows:
| Id | Name | FullName | Code | Level | ParentId |
|---|---|---|---|---|---|
| 1 | beijing | beijing | 00001 | 1 | NULL |
| 2 | dongcheng | beijing-dongcheng | 00001.00001 | 2 | 1 |
| 3 | xicheng | beijing-xicheng | 00001.00002 | 2 | 1 |
| 4 | hebei | hebei | 00002 | 1 | NULL |
| 5 | shijianzhuang | hebei-shijianzhuang | 00002.00001 | 2 | 4 |
| 6 | changanqu | hebei-shijianzhuang-changanqu | 00002.00001.00001 | 3 | 5 |
| 7 | qiaoxiqu | hebei-shijianzhuang-qiaoxiqu | 00002.00001.00002 | 3 | 5 |
The above operation has a batch method BulkCreateAsync
var beijing = new Region
{
Name = "beijing",
Children = new List<Region>
{
new Region
{
Name = "dongcheng"
},
new Region
{
Name = "dongcheng"
}
}
};
await _generalRegionTreeManager.BulkCreateAsync(beijing);
await CurrentUnitOfWork.SaveChangesAsync();
var hebei = new Region
{
Name = "hebei",
Children = new List<Region>
{
new Region
{
Name = "shijiazhuang",
Children = new List<Region>
{
new Region
{
Name = "changanqu"
},
new Region
{
Name = "qiaodongqu"
}
}
}
}
};
await _generalRegionTreeManager.BulkCreateAsync(hebei);
await CurrentUnitOfWork.SaveChangesAsync();// Query all areas below Beijing does not include Beijing)
var beijing = await _regionRepository.FirstOrDefaultAsync(x => x.Name == "beijing");
var beijingChildren = _regionRepository.GetAll().Where(x => x.Id != beijing.Id && x.Code.StartsWith(beijing.Code));
// Query the area below Beijing (all districts)
var beijing = await _regionRepository.FirstOrDefaultAsync(x => x.Name == "beijing");
var beijingChildren = _regionRepository.GetAll().Where(x => x.Level == beijing.Level - 1 && x.Code.StartsWith(beijing.Code));
// Query Changan and all the parent above
var changanqu = await _regionRepository.FirstOrDefaultAsync(x => x.Name == "changanqu");
var parents = await _regionRepository.GetAllListAsync(x => changanqu.Code.StartsWith(x.Code));
// Query Changan top parent.
var changanqu = await _regionRepository.FirstOrDefaultAsync(x => x.Name == "changanqu");
var hebei = await _regionRepository.FirstOrDefaultAsync(x => x.Level == 1 && changanqu.Code.Contains(x.Code));public interface IGeneralTreeManager<TTree, TPrimaryKey>
where TPrimaryKey : struct
where TTree : class, IGeneralTree<TTree, TPrimaryKey>
{
Task CreateAsync(TTree tree);
Task BulkCreateAsync(TTree tree, Action<TTree> childrenAction = null);
Task CreateChildrenAsync(TTree parent, ICollection<TTree> children, Action<TTree> childrenAction = null);
Task FillUpAsync(TTree tree, Action<TTree> childrenAction = null);
Task UpdateAsync(TTree tree, Action<TTree> childrenAction = null);
Task MoveAsync(TPrimaryKey id, TPrimaryKey? parentId, Action<TTree> childrenAction = null);
Task DeleteAsync(TPrimaryKey id);
}public override void PreInitialize()
{
// Custom error message
Configuration.Modules.GeneralTree<Region, long>().ExceptionMessageFactory = tree => $"{tree.Name} already exists!.";
// Custom node with the same name additional judgment logic
Configuration.Modules.GeneralTree<Region, long>().CheckSameNameExpression = (regionThis, regionCheck) => regionThis.SomeForeignKey == regionCheck.SomeForeignKey
// Custom FullName separator
Configuration.Modules.GeneralTree<Region, long>().Hyphen = "=>";
}The above code is for the entity's primary key as the value type. If it is a reference type, please use IGeneralTreeWithReferenceType and IGeneralTreeManagerWithReferenceType
Configure GeneralTreeCodeGenerateCode length (default is 5 digits)
[Fact]
public void Test_CreateCode_With_Length()
{
var generate = new GeneralTreeCodeGenerate(new GeneralTreeCodeGenerateConfiguration()
{
CodeLength = 3
});
generate.CreateCode().ShouldBe(null);
generate.CreateCode(42).ShouldBe("042");
generate.CreateCode(1, 2).ShouldBe("001.002");
generate.CreateCode(1, 2, 3).ShouldBe("001.002.003");
}GeneralTreeExtensions ToTree converts the Tree collection to TreeDto (has a hierarchical relationship, sortable)
[Fact]
public void ToTreeOrderBy_Test()
{
var regions = new List<Regin>
{
new Regin
{
Id = 1,
Name = "beijing"
},
new Regin
{
Id = 2,
Name = "bdongcheng",
ParentId = 1
},
new Regin
{
Id = 3,
Name = "axicheng",
ParentId = 1
},
new Regin
{
Id = 4,
Name = "aHebei"
},
new Regin
{
Id = 5,
Name = "bShijianzhuang",
ParentId = 4
},
new Regin
{
Id = 6,
Name = "aChengde",
ParentId = 4
},
new Regin
{
Id = 7,
Name = "bShuangqiao",
ParentId = 6
},
new Regin
{
Id = 8,
Name = "aShuangluan",
ParentId = 6
}
};
var tree = regions.ToTreeOrderBy<Regin, long, string>(x => x.Name).ToList();
tree.First().Name.ShouldBe("aHebei");
tree.First().Children.First().Name.ShouldBe("aChengde");
tree.First().Children.First().Children.First().Name.ShouldBe("aShuangluan");
}