System.Data.Entity.Core.Common.CommandTrees Namespace

An abstract base type for types that implement the IExpressionVisitor interface to derive from.

An abstract base type for types that implement the IExpressionVisitor interface to derive from.

Implements the basic functionality required by aggregates in a GroupBy clause.

Represents the logical AND of two Boolean arguments. This class cannot be inherited.

Represents an apply operation, which is the invocation of the specified function for each element in the specified input set. This class cannot be inherited.

Represents an arithmetic operation applied to numeric arguments. Addition, subtraction, multiplication, division, modulo, and negation are arithmetic operations. This class cannot be inherited.

Implements the basic functionality required by expressions that accept two expression operands.

Represents the When, Then, and Else clauses of the DbCaseExpression . This class cannot be inherited.

Represents the type conversion of a single argument to the specified type. This class cannot be inherited.

An immutable class that implements the basic functionality for the Query, Insert, Update, Delete, and function invocation command tree types.

Represents a comparison operation applied to two arguments. Equality, greater than, greater than or equal, less than, less than or equal, and inequality are comparison operations. This class cannot be inherited.

Represents different kinds of constants (literals). This class cannot be inherited.

Represents an unconditional join operation between the given collection arguments. This class cannot be inherited.

Represents a single row delete operation expressed as a command tree. This class cannot be inherited.

Represents the an expression that retrieves an entity based on the specified reference. This class cannot be inherited.

Removes duplicate elements from the specified set argument. This class cannot be inherited.

Represents the conversion of the specified set argument to a singleton. This class cannot be inherited.

Represents an expression that extracts a reference from the underlying entity instance. This class cannot be inherited.

Represents the set subtraction operation between the left and right operands. This class cannot be inherited.

Represents the base type for all expressions.

Describes a binding for an expression. Conceptually similar to a foreach loop in C#. The DbExpression property defines the collection being iterated over, while the Var property provides a means to reference the current element of the collection during the iteration. DbExpressionBinding is used to describe the set arguments to relational expressions such as DbFilterExpression, DbProjectExpression and DbJoinExpression.

Ensures that all metadata in a given expression tree is from the specified metadata workspace, potentially rebinding and rebuilding the expressions to appropriate replacement metadata where necessary.

Defines the basic functionality that should be implemented by visitors that do not return a result value.

Defines the basic functionality that should be implemented by visitors that return a result value of a specific type.

Represents a predicate applied to filter an input set. This produces the set of elements that satisfy the predicate. This class cannot be inherited.

Supports standard aggregate functions, such as MIN, MAX, AVG, SUM, and so on. This class cannot be inherited.

Represents the invocation of a database function.

Represents an invocation of a function. This class cannot be inherited.

Represents a collection of elements that compose a group.

Represents a group by operation. A group by operation is a grouping of the elements in the input set based on the specified key expressions followed by the application of the specified aggregates. This class cannot be inherited.

Defines the binding for the input set to a DbGroupByExpression. In addition to the properties of DbExpressionBinding, DbGroupExpressionBinding also provides access to the group element via the variable reference and to the group aggregate via the property.

Represents a boolean expression that tests whether a specified item matches any element in a list.

Represents a single row insert operation expressed as a command tree. This class cannot be inherited.

Represents the set intersection operation between the left and right operands. This class cannot be inherited.

Represents an empty set determination applied to a single set argument. This class cannot be inherited.

Represents null determination applied to a single argument. This class cannot be inherited.

Represents the type comparison of a single argument against the specified type. This class cannot be inherited.

Represents an inner, left outer, or full outer join operation between the given collection arguments on the specified join condition.

Represents a Lambda function that can be invoked to produce a DbLambdaExpression .

Allows the application of a lambda function to arguments represented by DbExpression objects.

Represents a string comparison against the specified pattern with an optional escape string. This class cannot be inherited.

Represents the restriction of the number of elements in the argument collection to the specified limit value.

Specifies a single clause in an insert or update modification operation, see SetClauses and SetClauses

Represents a data manipulation language (DML) operation expressed as a command tree.

Represents the construction of a new instance of a given type, including set and record types. This class cannot be inherited.

Represents the logical NOT of a single Boolean argument. This class cannot be inherited.

Represents a reference to a typed null literal. This class cannot be inherited.

Represents the retrieval of elements of the specified type from the given set argument. This class cannot be inherited.

Represents the logical OR of two Boolean arguments. This class cannot be inherited.

Represents a reference to a parameter declared on the command tree that contains this expression. This class cannot be inherited.

Represents the projection of a given input set over the specified expression. This class cannot be inherited.

Provides methods and properties for retrieving an instance property. This class cannot be inherited.

Represents a quantifier operation of the specified kind over the elements of the specified input set. This class cannot be inherited.

Represents a query operation expressed as a command tree. This class cannot be inherited.

Represents a strongly typed reference to a specific instance within an entity set. This class cannot be inherited.

Represents the retrieval of the key value of the specified Reference as a row.

Represents the navigation of a relationship. This class cannot be inherited.

Represents a 'scan' of all elements of a given entity set.

Specifies the clause in a modification operation that sets the value of a property. This class cannot be inherited.

Skips a specified number of elements in the input set. DbSkipExpression can only be used after the input collection has been sorted as specified by the sort keys.

Specifies a sort key that can be used as part of the sort order in a DbSortExpression . This class cannot be inherited.

Represents a sort operation applied to the elements of the specified input set based on the given sort keys. This class cannot be inherited.

Represents a type conversion operation applied to a polymorphic argument. This class cannot be inherited.

Implements the basic functionality required by expressions that accept a single expression argument.

Represents the set union (without duplicate removal) operation between the left and right operands.

Represents a single-row update operation expressed as a command tree. This class cannot be inherited.

Represents a reference to a variable that is currently in scope. This class cannot be inherited.

Visits each element of an expression tree from a given root expression. If any element changes, the tree is rebuilt back to the root and the new root expression is returned; otherwise the original root expression is returned.

Describes the different "kinds" (classes) of command trees.

Contains values that each expression class uses to denote the operation it represents. The ExpressionKind property of an DbExpression can be retrieved to determine which operation that expression represents.