Class Query<T>
Base class for typed query classes
Implements
Inherited Members
Namespace: EPiServer.Data.Dynamic.Linq
Assembly: EPiServer.Data.dll
Version: 12.0.3Syntax
public abstract class Query<T> : Query, IOrderedQueryable<T>, IEnumerable<T>, IEnumerable, IOrderedQueryable, IQueryable, IQueryable<T>, IQueryProviderType Parameters
| Name | Description |
|---|---|
| T |
Constructors
Query(DynamicDataStore)
Creates an instance of Query<T>
Declaration
protected Query(DynamicDataStore store)Parameters
| Type | Name | Description |
|---|---|---|
| DynamicDataStore | store | The store to create aquery for |
Query(DynamicDataStore, LoadAsObjectType)
Creates an instance of Query<T>
Declaration
protected Query(DynamicDataStore store, LoadAsObjectType loadObjectsAs)Parameters
| Type | Name | Description |
|---|---|---|
| DynamicDataStore | store | The store to create aquery for |
| LoadAsObjectType | loadObjectsAs | Specifies how objects should be loaded |
Properties
ElementType
Get the element type of the query
Declaration
public Type ElementType { get; }Property Value
| Type | Description |
|---|---|
| System.Type |
Expression
Get an Expression for the query
Declaration
public Expression Expression { get; }Property Value
| Type | Description |
|---|---|
| System.Linq.Expressions.Expression |
LoadObjectsAs
Specifies how objects should be loaded
Declaration
protected LoadAsObjectType LoadObjectsAs { get; set; }Property Value
| Type | Description |
|---|---|
| LoadAsObjectType |
Provider
Get a System.Linq.IQueryProvider for the query
Declaration
public IQueryProvider Provider { get; }Property Value
| Type | Description |
|---|---|
| System.Linq.IQueryProvider |
Store
The dynamic data store that the query will be executed against
Declaration
protected DynamicDataStore Store { get; set; }Property Value
| Type | Description |
|---|---|
| DynamicDataStore |
Methods
Clone()
Clone the current object
Declaration
protected override Query Clone()Returns
| Type | Description |
|---|---|
| Query | A new Query with the same values as the current object |
Overrides
CreateQuery(Expression)
Create a new query object from the expression
Declaration
public IQueryable CreateQuery(Expression expression)Parameters
| Type | Name | Description |
|---|---|---|
| System.Linq.Expressions.Expression | expression | An Expression to use as the base for the query |
Returns
| Type | Description |
|---|---|
| System.Linq.IQueryable | An System.Linq.IQueryable |
CreateQuery<TElement>(Expression)
Create a new query object from the expression
Declaration
public IQueryable<TElement> CreateQuery<TElement>(Expression expression)Parameters
| Type | Name | Description |
|---|---|---|
| System.Linq.Expressions.Expression | expression | An Expression to use as the base for the query |
Returns
| Type | Description |
|---|---|
| System.Linq.IQueryable<TElement> | A System.Linq.IQueryable<> |
Type Parameters
| Name | Description |
|---|---|
| TElement | The System.Type the query will return |
Execute()
Executes the query
Declaration
protected override object Execute()Returns
| Type | Description |
|---|---|
| System.Object | The result |
Overrides
Execute(Expression)
Execute the expression
Declaration
public object Execute(Expression expression)Parameters
| Type | Name | Description |
|---|---|---|
| System.Linq.Expressions.Expression | expression | The Expression to execute |
Returns
| Type | Description |
|---|---|
| System.Object | A System.Object |
Execute<TResult>(Expression)
Execute the expression
Declaration
public TResult Execute<TResult>(Expression expression)Parameters
| Type | Name | Description |
|---|---|---|
| System.Linq.Expressions.Expression | expression | The Expression to execute |
Returns
| Type | Description |
|---|---|
| TResult | A TResult |
Type Parameters
| Name | Description |
|---|---|
| TResult | The System.Type the query will return |
ExecuteScalar<TResult>()
Executes the query as a scalar
Declaration
protected TResult ExecuteScalar<TResult>()Returns
| Type | Description |
|---|---|
| TResult | The resulting instance |
Type Parameters
| Name | Description |
|---|---|
| TResult | The expected result type |
GetEnumerator()
Get an enumerator for the query
Declaration
public IEnumerator<T> GetEnumerator()Returns
| Type | Description |
|---|---|
| System.Collections.Generic.IEnumerator<T> | An System.Collections.Generic.IEnumerator<> instance |
Transform<TTransform>(Expression)
Transform creates (and returns) a new instance of QueryT with the specified TRansform type. All local expressions are copied to the created instance expressions list. The given Expression, if its not null, is then also added to the new instance.
Declaration
protected override Query<TTransform> Transform<TTransform>(Expression expression)Parameters
| Type | Name | Description |
|---|---|---|
| System.Linq.Expressions.Expression | expression | Optional expression to add to the new instance. May be null |
Returns
| Type | Description |
|---|---|
| Query<TTransform> | A new QueryT instance |
Type Parameters
| Name | Description |
|---|---|
| TTransform | The type the new QueryT should infer |
