Class WMAssetBaseDTO<T>

Data Transfer Object base class for all WMAssetBase DTOs. This class was implemented to centralize all of the common traits of asset DTOs, and prevent the increase of duplicated code as we add more assets to the file system.

Inheritance

object

DataTransferObject<T>

WMAssetBaseDTO<T>

WMDataReaderDTO

WMDataSourceBaseDTO

WMAssetDirectoryDTO

WMDocumentDTO

WMDocumentIndexDTO

WMHTTPRequestDTO

WMHTTPConnectionDTO

WMLLMConnectionDTO

WMLLMDTO

WMModelBaseDTO

DecisionModelDTO

Implements

IWMAssetBaseDTO

IWMVersionableAsset

IWMOwnableResource

IWMResource

IDbEntity

IWMEntity

Inherited Members

DataTransferObject<T>.ModelObject

DataTransferObject<T>.SetID(string)

DataTransferObject<T>.CreateModel(WMPrincipal, DbContext, object[])

DataTransferObject<T>.FromModel()

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: Quantellia.WMServer.Asset.Base

Assembly: WMServer.dll

Syntax

[PrimaryKey("ID", new string[] { "Version" })]
public abstract class WMAssetBaseDTO<T> : DataTransferObject<T>, IWMAssetBaseDTO, IWMVersionableAsset, IWMOwnableResource, IWMResource, IDbEntity, IWMEntity where T : WMAssetBase, new()

Type Parameters

Name	Description
T

Constructors

WMAssetBaseDTO()

Constructor for WMAssetBaseDTO<T>

Declaration

public WMAssetBaseDTO()

WMAssetBaseDTO(string)

Constructor for WMAssetBaseDTO<T> specifying ID

Declaration

public WMAssetBaseDTO(string id)

Parameters

Type	Name	Description
string	id

Properties

CreatedBy

ID of the user that created this entity.

Declaration

public string CreatedBy { get; set; }

Property Value

Type	Description
string

CreatedDate

Date and time this entity was last updated.

Declaration

public DateTime CreatedDate { get; set; }

Property Value

Type	Description
DateTime

Documentation

Longer, formatted description of this entity.

Declaration

public string? Documentation { get; set; }

Property Value

Type	Description
string

DocumentationMIMEType

MIME type of Documentation.

Declaration

public string? DocumentationMIMEType { get; set; }

Property Value

Type	Description
string

FullPathName

The unique directory for this WMAssetDirectoryDTO

Declaration

public string FullPathName { get; set; }

Property Value

Type	Description
string

ID

The ID of this entity.

Declaration

[Key]
[Column(Order = 0)]
public string ID { get; set; }

Property Value

Type	Description
string

IsDeleted

A flag on whether the asset is deleted (recoverable, but not found in searches)

Declaration

public int IsDeleted { get; set; }

Property Value

Type	Description
int

LastUpdatedBy

ID of the user that last updated this entity.

Declaration

public string LastUpdatedBy { get; set; }

Property Value

Type	Description
string

LastUpdatedDate

Date and time at which this entity was last updated.

Declaration

public DateTime LastUpdatedDate { get; set; }

Property Value

Type	Description
DateTime

Name

Name of this entity

Declaration

public string? Name { get; set; }

Property Value

Type	Description
string

OwnerID

Owner of this entity

Declaration

public string OwnerID { get; set; }

Property Value

Type	Description
string

OwnerType

Type of the owner that owns this entity

Declaration

public string OwnerType { get; set; }

Property Value

Type	Description
string

ParentID

ID for the Parent

Declaration

public string ParentID { get; set; }

Property Value

Type	Description
string

Properties

Custom properties defined by the user

Declaration

[NotMapped]
public Dictionary<string, string> Properties { get; }

Property Value

Type	Description
Dictionary<string, string>

PropertiesSerialized

Custom properties defined by the user. Serializes to and from Properties

Declaration

public string PropertiesSerialized { get; set; }

Property Value

Type	Description
string

Status

The status of this version.

Declaration

public IWMVersionableAsset.StatusType Status { get; set; }

Property Value

Type	Description
IWMVersionableAsset.StatusType

Summary

Short summary of this entity.

Declaration

public string? Summary { get; set; }

Property Value

Type	Description
string

Version

The version number of this asset.

Declaration

[Key]
[Column(Order = 1)]
public int Version { get; set; }

Property Value

Type	Description
int

VersionName

The name of this version.

Declaration

public string? VersionName { get; set; }

Property Value

Type	Description
string

Methods

BuildExpressionPropertyReferencesAsset<A>(Expression<Func<A, string>>)

Builds an EF compatable expression tree that equates a property reference with the asset calling this method. For example, if this method is called on DataSource /Path/To/Source, and the referenceProperty is (datareader) => datareader.DataSource, an expression tree is build that accepts data readers, and will return true if the data reader's DataSource reference is equal to /Path/To/Source, /Path/To/Source;Head, the ID of the data source, etc...

Declaration

public Expression<Func<A, bool>> BuildExpressionPropertyReferencesAsset<A>(Expression<Func<A, string>> referenceProperty) where A : IWMAssetBaseDTO, new()

Parameters

Type	Name	Description
Expression<Func<A, string>>	referenceProperty	The reference property to check under.

Returns

Type	Description
Expression<Func<A, bool>>	An expression tree that can equate a reference to an asset, and the asset itself.

Type Parameters

Name	Description
A	The type of the asset whose property is referenced.

CloneDTO<A, B>(WMPrincipal, WMAssetIdentifier, DbSet<A>, VersionCreateArgs?, WMAppDbContext, Func<A, Task>)

Clones the specified WMAssetBaseDTO<T> with an iterated name "AssetName (1), etc... ", iterates the version number. Validates against all WMAssetBase criteria. Calls callBeforeClone after validation, but before creating the clone. This means that all asset specific validation (data readers, etc...) should be called in callBeforeClone, instead of after CloneDTO<A, B>(WMPrincipal, WMAssetIdentifier, DbSet<A>, VersionCreateArgs?, WMAppDbContext, Func<A, Task>). If callBeforeClone throws an exception, no changes will be saved.

Declaration

public static Task<A> CloneDTO<A, B>(WMPrincipal principal, WMAssetIdentifier identifier, DbSet<A> dbSet, VersionCreateArgs? args, WMAppDbContext context, Func<A, Task> callBeforeClone = null) where A : WMAssetBaseDTO<B>, new() where B : WMAssetBase, new()

Parameters

Type	Name	Description
WMPrincipal	principal	The owner of the directory
WMAssetIdentifier	identifier	The identifier of the directory
DbSet<A>	dbSet	The connection object to the table storing the WMAssetBaseDTO<T> to be updated
VersionCreateArgs	args	Arguments for creating a version.
WMAppDbContext	context	The DbContext
Func<A, Task>	callBeforeClone	An optional function accepting a WMAssetBaseDTO<T> and returning a Task that is called and awaited after the asset is verified to be cloneable, but before the asset is cloned.

Returns

Type	Description
Task<A>

Type Parameters

Name	Description
A
B

Exceptions

Type	Condition
Exception

CommitDTO<A, B>(WMPrincipal, WMAssetIdentifier, DbSet<A>, WMAppDbContext)

Commit the specified WMAssetBaseDTO<T> as Head, sets the previous Head as superseded.

Declaration

public static Task CommitDTO<A, B>(WMPrincipal principal, WMAssetIdentifier identifier, DbSet<A> dbSet, WMAppDbContext context) where A : WMAssetBaseDTO<B>, new() where B : WMAssetBase, new()

Parameters

Type	Name	Description
WMPrincipal	principal	The owner of the directory
WMAssetIdentifier	identifier	The identifier of the directory
DbSet<A>	dbSet	The connection object to the table storing the WMAssetBaseDTO<T> to be updated
WMAppDbContext	context	The DbContext

Returns

Type	Description
Task

Type Parameters

Name	Description
A
B

Exceptions

Type	Condition
Exception

CreateDTO<A, B>(WMPrincipal, A, DbSet<A>, WMAppDbContext, Func<A, Task>)

Creates the specified WMAssetBaseDTO<T>. Validates against all WMAssetBase criteria. Calls callBeforeCreation after validation, but before creating the asset. This means that all asset specific validation (data readers, etc...) should be called in callBeforeCreation, instead of after CreateDTO<A, B>(WMPrincipal, A, DbSet<A>, WMAppDbContext, Func<A, Task>). If callBeforeCreation throws an exception, the asset will not be saved.

Declaration

public static Task CreateDTO<A, B>(WMPrincipal principal, A a_dto, DbSet<A> dbSet, WMAppDbContext context, Func<A, Task> callBeforeCreation = null) where A : WMAssetBaseDTO<B>, new() where B : WMAssetBase, new()

Parameters

Type	Name	Description
WMPrincipal	principal	The owner of the directory
A	a_dto	The WMAssetBaseDTO<T> to be created.
DbSet<A>	dbSet	The connection object to the table storing the WMAssetBaseDTO<T> to be updated
WMAppDbContext	context	The DbContext
Func<A, Task>	callBeforeCreation	An optional function accepting a WMAssetBaseDTO<T> and returning a Task that is called and awaited after the asset is verified to be creatable, but before the asset is created.

Returns

Type	Description
Task

Type Parameters

Name	Description
A
B

Exceptions

Type	Condition
Exception

DTOVersions<A, B>(WMPrincipal, WMAssetIdentifier, DbSet<A>, WMAppDbContext)

Returns every available version of the specified WMAssetBaseDTO<T>.

Declaration

public static Task<IEnumerable<VersionArgs>> DTOVersions<A, B>(WMPrincipal principal, WMAssetIdentifier identifier, DbSet<A> dbSet, WMAppDbContext context) where A : WMAssetBaseDTO<B>, new() where B : WMAssetBase, new()

Parameters

Type	Name	Description
WMPrincipal	principal	The owner of the directory
WMAssetIdentifier	identifier	The identifier of the directory
DbSet<A>	dbSet	The connection object to the table storing the WMAssetBaseDTO<T> to be updated
WMAppDbContext	context	The DbContext

Returns

Type	Description
Task<IEnumerable<VersionArgs>>

Type Parameters

Name	Description
A
B

Exceptions

Type	Condition
Exception

DeleteDTO<A, B>(WMPrincipal, WMAssetIdentifier, DbSet<A>, WMAppDbContext, Func<A, Task>)

Deletes the specified WMAssetBaseDTO<T>. Validates against all WMAssetBase criteria. Calls callBeforeDeletion after validation, but before deleting the asset. This means that all asset specific validation (data readers, etc...) should be called in callBeforeDeletion, instead of after DeleteDTO<A, B>(WMPrincipal, WMAssetIdentifier, DbSet<A>, WMAppDbContext, Func<A, Task>). If callBeforeDeletion throws an exception, the asset will not be deleted.

Declaration

public static Task DeleteDTO<A, B>(WMPrincipal principal, WMAssetIdentifier identifier, DbSet<A> dbSet, WMAppDbContext context, Func<A, Task> callBeforeDeletion = null) where A : WMAssetBaseDTO<B>, new() where B : WMAssetBase, new()

Parameters

Type	Name	Description
WMPrincipal	principal	The owner of the directory
WMAssetIdentifier	identifier	The identifier of the directory
DbSet<A>	dbSet	The connection object to the table storing the WMAssetBaseDTO<T> to be updated
WMAppDbContext	context	The DbContext
Func<A, Task>	callBeforeDeletion	An optional function accepting a WMAssetBaseDTO<T> and returning a Task that is called and awaited after the asset is verified to be deletable, but before the asset is deleted.

Returns

Type	Description
Task

Type Parameters

Name	Description
A
B

Exceptions

Type	Condition
Exception

GetAuthorizedAssetIQueryable<A>(WMPrincipal, IQueryable<A>, WMAppDbContext)

Builds an IQueryable that makes up all assets the user has authorization to view. This IQueryable should be built before all other querying actions to ensure that no user has access to assets outside of their authorization. This IQueryable is equivalent to the following SQL Query:

Select v1.* from
   (Select * from WMLLM
    Where OwnerType LIKE '%WMOrganization')  v1
join
   (Select* from JoinWMUserWMOrganization
    Where WMUserID = @userID)                v2
    on v1.OwnerID = v2.WMOrganizationID
Union
   (Select * from WMLLM
    Where OwnerType LIKE '%WMUser'
    AND OwnerID = @userID)
...
WHERE
... parent exists

Declaration

public static Task<IQueryable<A>> GetAuthorizedAssetIQueryable<A>(WMPrincipal principal, IQueryable<A> dbSet, WMAppDbContext context) where A : IWMAssetBaseDTO, new()

Parameters

Type	Name	Description
WMPrincipal	principal	The user.
IQueryable<A>	dbSet	An IQueryable representing the table of all assets of type A. Must be .AsNoTracking()
WMAppDbContext	context

Returns

Type	Description
Task<IQueryable<A>>

Type Parameters

Name	Description
A	The type of asset DTO to return.

GetDTOFromDirectory<A>(WMPrincipal, WMAssetIdentifier, int, DbSet<A>, WMAppDbContext, Expression<Func<A, A>>?)

Centralizes the process of querying the database into a single function, accounting for ownership, ID, FullPathName, and version. This function builds an EntityFramework IQueryable, which is a deferred execution interface that builds an expression tree and translates into SQL during runtime. Because the query isn't actually executed until the final line when ToListAsync is called, we have greater control on what data we want to be sent from the database, without the insecurity and poor maintainability of calling raw SQL. This method returns an IEnumerable of records which can all be found in the directory matching the identifier as well as in child directories, to the recursion depth specified.

Declaration

public static Task<IEnumerable<A>> GetDTOFromDirectory<A>(WMPrincipal principal, WMAssetIdentifier identifier, int recursionDepth, DbSet<A> dbSet, WMAppDbContext context, Expression<Func<A, A>>? propertySelector = null) where A : class, IWMAssetBaseDTO, new()

Parameters

Type	Name	Description
WMPrincipal	principal	The user retrieving the asset.
WMAssetIdentifier	identifier	The identifier of the asset directory. An object that combines the ID, FullPathName, and Version.
int	recursionDepth	Depth to which the directory subtrees under the specified directory should be traversed. If 0 is given, only records in the identified directory will be returned. If 1 then a single layer of child directories will also be traversed. If -1 then all child directories will be traversed.
DbSet<A>	dbSet	The EntityFramework DbSet representing the connection to the table being queried.
WMAppDbContext	context	The WMAppDbContext
Expression<Func<A, A>>	propertySelector	An optional expression that allows additional mapping of the database DTO objects to instance DTO objects. (i.e. excluding DocumentData and DocumentEditedText from WMDocumentDTO, which requires excessive time and bandwidth. An example of this can be found in Get(WMPrincipal, WMAssetIdentifier, WMAppDbContext?, Expression<Func<WMDocumentDTO, WMDocumentDTO>>))

Returns

Type	Description
Task<IEnumerable<A>>

Type Parameters

Name	Description
A	The class of the DTO object being retrieved.

GetDTOFromFilter<A>(WMPrincipal, IQueryable<A>, WMAppDbContext, Expression<Func<A, bool>>?, bool, Expression<Func<A, A>>?)

Centralizes the process of querying the database into a single function, accounting for ownership, ID, FullPathName, and version. This function builds an EntityFramework IQueryable, which is a deferred execution interface that builds an expression tree and translates into SQL during runtime. Because the query isn't actually executed until the final line when ToListAsync is called, we have greater control on what data we want to be sent from the database, without the insecurity and poor maintainability of calling raw SQL. This function returns multiple records matching the predicates selectOnlyHead filter

Declaration

public static Task<IEnumerable<A>> GetDTOFromFilter<A>(WMPrincipal principal, IQueryable<A> dbSet, WMAppDbContext context, Expression<Func<A, bool>>? filter = null, bool selectOnlyHead = true, Expression<Func<A, A>>? propertySelector = null) where A : class, IWMAssetBaseDTO, new()

Parameters

Type	Name	Description
WMPrincipal	principal	The user retrieving the asset.
IQueryable<A>	dbSet	The EntityFramework DbSet representing the connection to the table being queried.
WMAppDbContext	context	The WMAppDbContext
Expression<Func<A, bool>>	filter	A predicate called per record, which if evaluated to true, will return the record in this query.
bool	selectOnlyHead	Whether records other than Head should be retrieved. If true, we will only return one record per ID, if false, we will return every version of each ID that matches.
Expression<Func<A, A>>	propertySelector	An optional expression that allows additional mapping of the database DTO object to the instance DTO object. (i.e. excluding DocumentData and DocumentEditedText from WMDocumentDTO, which requires excessive time and bandwidth. An example of this can be found in Get(WMPrincipal, WMAssetIdentifier, WMAppDbContext?, Expression<Func<WMDocumentDTO, WMDocumentDTO>>))

Returns

Type	Description
Task<IEnumerable<A>>

Type Parameters

Name	Description
A	The class of the DTO object being retrieved.

GetDTO<A>(WMPrincipal, WMAssetIdentifier, IQueryable<A>, WMAppDbContext, Expression<Func<A, A>>?)

Centralizes the process of querying the database into a single function, accounting for ownership, ID, FullPathName, and version. This function builds an EntityFramework IQueryable, which is a deferred execution interface that builds an expression tree and translates into SQL during runtime. Because the query isn't actually executed until the final line when SingleOrDefaultAsync is called, we have greater control on what data we want to be sent from the database, without the insecurity and poor maintainability of calling raw SQL. This function returns a single record matching the identifier

Declaration

public static Task<A> GetDTO<A>(WMPrincipal principal, WMAssetIdentifier identifier, IQueryable<A> dbSet, WMAppDbContext context, Expression<Func<A, A>>? propertySelector = null) where A : class, IWMAssetBaseDTO, new()

Parameters

Type	Name	Description
WMPrincipal	principal	The user retrieving the asset.
WMAssetIdentifier	identifier	The identifier of the asset. An object that combines the ID, FullPathName, and Version.
IQueryable<A>	dbSet	The EntityFramework DbSet representing the connection to the table being queried.
WMAppDbContext	context	The WMAppDbContext
Expression<Func<A, A>>	propertySelector	An optional expression that allows additional mapping of the database DTO object to the instance DTO object. (i.e. excluding DocumentData and DocumentEditedText from WMDocumentDTO, which requires excessive time and bandwidth. An example of this can be found in Get(WMPrincipal, WMAssetIdentifier, WMAppDbContext?, Expression<Func<WMDocumentDTO, WMDocumentDTO>>))

Returns

Type	Description
Task<A>

Type Parameters

Name	Description
A	The class of the DTO object being retrieved.

GetEveryAuthorizedAssetIQueryable(WMPrincipal, WMAppDbContext)

Returns an IQueryable<T> containing all authorized asset types.

Declaration

public static Task<IQueryable<IWMAssetBaseDTO>> GetEveryAuthorizedAssetIQueryable(WMPrincipal principal, WMAppDbContext context)

Parameters

Type	Name	Description
WMPrincipal	principal
WMAppDbContext	context

Returns

Type	Description
Task<IQueryable<IWMAssetBaseDTO>>

GetIdentifier(bool)

Returns this asset DTO's identifier. (i.e. Root/A/B/C/D;Ver# or abcde-12345-.....;ver#)

Declaration

public WMAssetIdentifier GetIdentifier(bool UseFullPathName = false)

Parameters

Type	Name	Description
bool	UseFullPathName	If true, uses the asset's fullPathName, otherwise uses the ID.

Returns

Type	Description
WMAssetIdentifier

ResourceDefinition()

This defines the default operations for an asset, with placeholder resource name and description.

Declaration

public static WMResourceOperationsDefinition ResourceDefinition()

Returns

Type	Description
WMResourceOperationsDefinition

UpdateDTO<A, B>(WMPrincipal, WMAssetIdentifier, A, DbSet<A>, WMAppDbContext, Func<A, A, Task>)

Updates the specified WMAssetBaseDTO<T>. Validates against all WMAssetBase criteria. Calls callBeforeUpdate after validation, but before saving changes. This means that all asset specific validation (data readers, etc...) should be called in callBeforeUpdate, instead of after UpdateDTO<A, B>(WMPrincipal, WMAssetIdentifier, A, DbSet<A>, WMAppDbContext, Func<A,Task>). If callBeforeUpdate throws an exception, no changes will be saved.

Declaration

public static Task UpdateDTO<A, B>(WMPrincipal principal, WMAssetIdentifier identifier, A a_dto, DbSet<A> dbSet, WMAppDbContext context, Func<A, A, Task> callBeforeUpdate = null) where A : WMAssetBaseDTO<B>, new() where B : WMAssetBase, new()

Parameters

Type	Name	Description
WMPrincipal	principal	The owner of the directory
WMAssetIdentifier	identifier	The identifier of the directory
A	a_dto	The WMAssetBaseDTO<T> to be updated.
DbSet<A>	dbSet	The connection object to the table storing the WMAssetBaseDTO<T> to be updated
WMAppDbContext	context	The DbContext
Func<A, A, Task>	callBeforeUpdate	An optional function accepting two WMAssetBaseDTO<T> and returning a Task that is called and awaited after the asset is verified to be updatable, but before the asset is updated. The first WMAssetBaseDTO<T> will be the modified asset, and the second will be the original asset.

Returns

Type	Description
Task

Type Parameters

Name	Description
A
B

Exceptions

Type	Condition
Exception

UpdateModel(WMPrincipal, DbContext, object[]?)

Updates the contained WMAssetBase with all base properties..

Declaration

public override Task<T> UpdateModel(WMPrincipal principal, DbContext context, object[]? data = null)

Parameters

Type	Name	Description
WMPrincipal	principal
DbContext	context
object[]	data

Returns

Type	Description
Task<T>

Overrides

DataTransferObject<T>.UpdateModel(WMPrincipal, DbContext, object[])

ValidateDirectory<T_Asset>(WMPrincipal, WMAssetBaseDTO<T_Asset>, WMAssetBaseDTO<T_Asset>?, WMAppDbContext)

Validates the uniqueness and name correctness of an asset DTO. Throws an exception otherwise.

Declaration

protected static Task ValidateDirectory<T_Asset>(WMPrincipal principal, WMAssetBaseDTO<T_Asset> a_dto, WMAssetBaseDTO<T_Asset>? a_dto_original, WMAppDbContext context) where T_Asset : WMAssetBase, new()

Parameters

Type	Name	Description
WMPrincipal	principal	The owner of the asset
WMAssetBaseDTO<T_Asset>	a_dto	The asset to be validated
WMAssetBaseDTO<T_Asset>	a_dto_original	The not updated version of this asset. Null indicates that the asset is new.
WMAppDbContext	context	The DbContext

Returns

Type	Description
Task

Type Parameters

Name	Description
T_Asset

Implements

IWMAssetBaseDTO

IWMVersionableAsset

IWMOwnableResource

IWMResource

IDbEntity

IWMEntity