C# Class EFUtility.CodeGenerationTools.MetadataTools

Responsible for making the Entity Framework Metadata more accessible for code generation.

Exibir arquivo Open project: jradxl/Entity-Framework-Code-Generation-Tools-Experiments Class Usage Examples

Public Methods

Method	Description
ClrType ( TypeUsage typeUsage ) : Type	This method returns the underlying CLR type of the o-space type corresponding to the supplied typeUsage Note that for an enum type this means that the type backing the enum will be returned, not the enum type itself.
GetCorrespondingDependentProperty ( System.Data.Metadata.Edm.NavigationProperty navProperty, System.Data.Metadata.Edm.EdmProperty principalProperty ) : System.Data.Metadata.Edm.EdmProperty	Given a property on the principal end of a referential constraint, returns the corresponding property on the dependent end. Requires: The association has a referential constraint, and the specified principalProperty is one of the properties on the principal end.
GetCorrespondingPrincipalProperty ( System.Data.Metadata.Edm.NavigationProperty navProperty, System.Data.Metadata.Edm.EdmProperty dependentProperty ) : System.Data.Metadata.Edm.EdmProperty	Given a property on the dependent end of a referential constraint, returns the corresponding property on the principal end. Requires: The association has a referential constraint, and the specified dependentProperty is one of the properties on the dependent end.
GetDependentProperties ( System.Data.Metadata.Edm.NavigationProperty navProperty ) : ReadOnlyMetadataCollection	Gets the collection of properties that are on the dependent end of a referential constraint for the specified navigation property. Requires: The association has a referential constraint.
GetElementType ( TypeUsage typeUsage ) : TypeUsage	If the passed in TypeUsage represents a collection this method returns final element type of the collection, otherwise it returns the value passed in.
GetPrincipalProperties ( System.Data.Metadata.Edm.NavigationProperty navProperty ) : ReadOnlyMetadataCollection	Gets the collection of properties that are on the principal end of a referential constraint for the specified navigation property. Requires: The association has a referential constraint.
GetSubtypesOf ( EntityType type, ItemCollection itemCollection, bool includeAbstractTypes ) : IEnumerable	Returns the subtype of the EntityType in the current itemCollection
Inverse ( System.Data.Metadata.Edm.NavigationProperty navProperty ) : System.Data.Metadata.Edm.NavigationProperty	Returns the NavigationProperty that is the other end of the same association set if it is available, otherwise it returns null.
IsCascadeDeletePrincipal ( System.Data.Metadata.Edm.AssociationEndMember associationEnd ) : bool	True if the specified association end is the principal in an identifying relationship. or if the association end has cascade delete defined.
IsCascadeDeletePrincipal ( System.Data.Metadata.Edm.NavigationProperty navProperty ) : bool	True if the source end of the specified navigation property is the principal in an identifying relationship. or if the source end has cascade delete defined.
IsIdentifyingRelationship ( System.Data.Metadata.Edm.AssociationType association ) : bool	True if the specified association type is an identifying relationship. In order to be an identifying relationship, the association must have a referential constraint where all of the dependent properties are part of the dependent type's primary key.
IsKey ( System.Data.Metadata.Edm.EdmProperty property ) : bool	True if the EdmProperty is a key of its DeclaringType, False otherwise.
IsNullable ( System.Data.Metadata.Edm.EdmProperty property ) : bool	True if the EdmProperty TypeUsage is Nullable, False otherwise.
IsNullable ( TypeUsage typeUsage ) : bool	True if the TypeUsage is Nullable, False otherwise.
IsPrincipalEndOfIdentifyingRelationship ( System.Data.Metadata.Edm.AssociationEndMember associationEnd ) : bool	True if the specified association end is the principal end in an identifying relationship. In order to be an identifying relationship, the association must have a referential constraint where all of the dependent properties are part of the dependent type's primary key.
IsSubtypeOf ( System.Data.Metadata.Edm.EdmType firstType, System.Data.Metadata.Edm.EdmType secondType ) : bool	requires: firstType is not null effects: if secondType is among the base types of the firstType, return true, otherwise returns false. when firstType is same as the secondType, return false.
MetadataTools ( object textTransformation ) : System	Initializes an MetadataTools Instance with the TextTransformation (T4 generated class) that is currently running
NeedsHandleCascadeDeleteMethod ( ItemCollection itemCollection, EntityType entity ) : bool	True if this entity type requires the HandleCascadeDelete method defined and the method has not been defined on any base type
TryGetStringMetadataPropertySetting ( System.Data.Metadata.Edm.MetadataItem item, string propertyName, string &value ) : bool
UnderlyingClrType ( System.Data.Metadata.Edm.EdmType edmType ) : Type	This method returns the underlying CLR type given the c-space type. Note that for an enum type this means that the type backing the enum will be returned, not the enum type itself.

Private Methods

Method	Description
ContainsCascadeDeleteAssociation ( ItemCollection itemCollection, EntityType entity ) : bool	True if this entity type participates in any relationships where the other end has an OnDelete cascade delete defined, or if it is the dependent in any identifying relationships

Method Details

ClrType() public method

This method returns the underlying CLR type of the o-space type corresponding to the supplied typeUsage Note that for an enum type this means that the type backing the enum will be returned, not the enum type itself.

public ClrType ( TypeUsage typeUsage ) : Type
typeUsage	TypeUsage
return	System.Type

GetCorrespondingDependentProperty() public method

Given a property on the principal end of a referential constraint, returns the corresponding property on the dependent end. Requires: The association has a referential constraint, and the specified principalProperty is one of the properties on the principal end.

public GetCorrespondingDependentProperty ( System.Data.Metadata.Edm.NavigationProperty navProperty, System.Data.Metadata.Edm.EdmProperty principalProperty ) : System.Data.Metadata.Edm.EdmProperty
navProperty	System.Data.Metadata.Edm.NavigationProperty
principalProperty	System.Data.Metadata.Edm.EdmProperty
return	System.Data.Metadata.Edm.EdmProperty

GetCorrespondingPrincipalProperty() public method

Given a property on the dependent end of a referential constraint, returns the corresponding property on the principal end. Requires: The association has a referential constraint, and the specified dependentProperty is one of the properties on the dependent end.

public GetCorrespondingPrincipalProperty ( System.Data.Metadata.Edm.NavigationProperty navProperty, System.Data.Metadata.Edm.EdmProperty dependentProperty ) : System.Data.Metadata.Edm.EdmProperty
navProperty	System.Data.Metadata.Edm.NavigationProperty
dependentProperty	System.Data.Metadata.Edm.EdmProperty
return	System.Data.Metadata.Edm.EdmProperty

GetDependentProperties() public method

Gets the collection of properties that are on the dependent end of a referential constraint for the specified navigation property. Requires: The association has a referential constraint.

public GetDependentProperties ( System.Data.Metadata.Edm.NavigationProperty navProperty ) : ReadOnlyMetadataCollection
navProperty	System.Data.Metadata.Edm.NavigationProperty
return	ReadOnlyMetadataCollection

GetElementType() public method

If the passed in TypeUsage represents a collection this method returns final element type of the collection, otherwise it returns the value passed in.

public GetElementType ( TypeUsage typeUsage ) : TypeUsage
typeUsage	TypeUsage
return	TypeUsage

GetPrincipalProperties() public method

Gets the collection of properties that are on the principal end of a referential constraint for the specified navigation property. Requires: The association has a referential constraint.

public GetPrincipalProperties ( System.Data.Metadata.Edm.NavigationProperty navProperty ) : ReadOnlyMetadataCollection
navProperty	System.Data.Metadata.Edm.NavigationProperty
return	ReadOnlyMetadataCollection

GetSubtypesOf() public method

Returns the subtype of the EntityType in the current itemCollection

public GetSubtypesOf ( EntityType type, ItemCollection itemCollection, bool includeAbstractTypes ) : IEnumerable
type	System.Data.Metadata.Edm.EntityType
itemCollection	ItemCollection
includeAbstractTypes	bool
return	IEnumerable

Inverse() public method

Returns the NavigationProperty that is the other end of the same association set if it is available, otherwise it returns null.

public Inverse ( System.Data.Metadata.Edm.NavigationProperty navProperty ) : System.Data.Metadata.Edm.NavigationProperty
navProperty	System.Data.Metadata.Edm.NavigationProperty
return	System.Data.Metadata.Edm.NavigationProperty

IsCascadeDeletePrincipal() public method

True if the specified association end is the principal in an identifying relationship. or if the association end has cascade delete defined.

public IsCascadeDeletePrincipal ( System.Data.Metadata.Edm.AssociationEndMember associationEnd ) : bool
associationEnd	System.Data.Metadata.Edm.AssociationEndMember
return	bool

IsCascadeDeletePrincipal() public method

True if the source end of the specified navigation property is the principal in an identifying relationship. or if the source end has cascade delete defined.

public IsCascadeDeletePrincipal ( System.Data.Metadata.Edm.NavigationProperty navProperty ) : bool
navProperty	System.Data.Metadata.Edm.NavigationProperty
return	bool

IsIdentifyingRelationship() public method

True if the specified association type is an identifying relationship. In order to be an identifying relationship, the association must have a referential constraint where all of the dependent properties are part of the dependent type's primary key.

public IsIdentifyingRelationship ( System.Data.Metadata.Edm.AssociationType association ) : bool
association	System.Data.Metadata.Edm.AssociationType
return	bool

IsKey() public method

True if the EdmProperty is a key of its DeclaringType, False otherwise.

public IsKey ( System.Data.Metadata.Edm.EdmProperty property ) : bool
property	System.Data.Metadata.Edm.EdmProperty
return	bool

IsNullable() public method

True if the EdmProperty TypeUsage is Nullable, False otherwise.

public IsNullable ( System.Data.Metadata.Edm.EdmProperty property ) : bool
property	System.Data.Metadata.Edm.EdmProperty
return	bool

IsNullable() public method

True if the TypeUsage is Nullable, False otherwise.

public IsNullable ( TypeUsage typeUsage ) : bool
typeUsage	TypeUsage
return	bool

IsPrincipalEndOfIdentifyingRelationship() public method

True if the specified association end is the principal end in an identifying relationship. In order to be an identifying relationship, the association must have a referential constraint where all of the dependent properties are part of the dependent type's primary key.

public IsPrincipalEndOfIdentifyingRelationship ( System.Data.Metadata.Edm.AssociationEndMember associationEnd ) : bool
associationEnd	System.Data.Metadata.Edm.AssociationEndMember
return	bool

IsSubtypeOf() public method

requires: firstType is not null effects: if secondType is among the base types of the firstType, return true, otherwise returns false. when firstType is same as the secondType, return false.

public IsSubtypeOf ( System.Data.Metadata.Edm.EdmType firstType, System.Data.Metadata.Edm.EdmType secondType ) : bool
firstType	System.Data.Metadata.Edm.EdmType
secondType	System.Data.Metadata.Edm.EdmType
return	bool

MetadataTools() public method

Initializes an MetadataTools Instance with the TextTransformation (T4 generated class) that is currently running

public MetadataTools ( object textTransformation ) : System
textTransformation	object
return	System

NeedsHandleCascadeDeleteMethod() public method

True if this entity type requires the HandleCascadeDelete method defined and the method has not been defined on any base type

public NeedsHandleCascadeDeleteMethod ( ItemCollection itemCollection, EntityType entity ) : bool
itemCollection	ItemCollection
entity	System.Data.Metadata.Edm.EntityType
return	bool

TryGetStringMetadataPropertySetting() public static method

public static TryGetStringMetadataPropertySetting ( System.Data.Metadata.Edm.MetadataItem item, string propertyName, string &value ) : bool
item	System.Data.Metadata.Edm.MetadataItem
propertyName	string
value	string
return	bool

UnderlyingClrType() public method

This method returns the underlying CLR type given the c-space type. Note that for an enum type this means that the type backing the enum will be returned, not the enum type itself.

public UnderlyingClrType ( System.Data.Metadata.Edm.EdmType edmType ) : Type
edmType	System.Data.Metadata.Edm.EdmType
return	System.Type