IEntityField Interface

Gets or sets a value indicating whether this field should be threated as a derived table field. This is necessary when this field is in a query and targets a derived table while this field is actually a full entity field (so it has field info). If this flag is true, the field will result in objectAlias.Alias instead of persistenceinfo.Fieldname as alias (alias only if required)

The name of the object this field is currently in. Differs only from ContainingObjectName if the field instance is in a subtype while it is originally defined in a supertype.

The .NET type of the field in the DB. This value is used to convert a currentvalue back to this type using TypeConverterToUse.

The aggregate function to apply on this field in a select query. Ignored in INSERT/UPDATE/DELETE queries. Designed to be used in TypedList/TypedView classes.

The alias to use for this field. Only used when this field object is part of a typed list. Adapter: returns the alias set in the designer SelfServicing: returns Name

Name of the containing object this field belongs to (entity or typed view). This name is required to retrieve persistence information in Adapter Set via constructor. This name is also used by EntityRelation to determine alias - table connection.

Gets the current value for this field and sets the new value for this field, by overwriting current value. The value in currentValue is discarded, versioning control has to save the original value of currentValue before this property is called.

The Type of the values of this field.

Gets the value read from the database for this field. Use this field in optimistic concurrency predicates. Set by ForcedCurrentValueWrite(object, value) by the object fetcher logic.

The expression to apply to this field in a select list, update statement or predicate or expression. Expression is applied before AggregateFunctionToApply.

Gets the field index related to this IEntityField, so the field can be used to retrieve the field index.

If IsIdentity is set to true, this property has to be set to the name of the sequence which supplies the value for the EntityField's corresponding table field. On SqlServer this is @@IDENTITY or SCOPE_IDENTITY() and only used when the row is succesfully inserted, however on Oracle this value is used to specify a new value and to retrieve the new value. Is undefined when IsIdentity is set to false.

If the value of this field is changed, this property is set to true. Set when CurrentValue receives a valid value.

If set to true, in the constructor, this field is part of a foreign key. This field is not used in LLBLGen Pro's code, however can be useful in user code.

If set to true, the Dynamic Query Engine (DQE) will assume the field is an Identity field and will act accordingly (i.e.: as the target database handles Identity fields: SqlServer will generate a new value itself, Oracle wants to have a sequence input.

Flag to signal if the field is in a multi-target entity. Used for alias production during query building in scenario's with inheritance.

If the original value in the column for this entityfield is DBNull (NULL), this parameter should be set to true, otherwise to false. In BL Logic, it's impractical to work with NULL values, so these are converted to handable values. The developer can still determine if the original value was DBNull by checking this field.

Will be true if this field can be set to NULL in the database, false otherwise. The Field Validation logic in an entity will use this flag to check if the field indeed can be set to NULL or not. Set by constructor.

Gets a value indicating whether the DataType is an enum type. This is a helper boolean so it doesn't have to be determined for every field set during a fetch.

If set to true, in the constructor, this field will end up in the PrimaryKey field list of the containing IEntityFields object.

If set to true, in the constructor, no changes can be made to this field.

Gets the linked super type field, if this field is a subtype field and it's linked to a supertype field, otherwise null.

The maximum length of the value of the entityfield (string/binary data). Is ignored for entityfields which hold non-string and non-binary values. Value initially set for this field is the length of the database column this field is mapped on.

The name of the field. Name cannot be of zero length nor can they consist of solely spaces. Leading and trailing spaces are trimmed.

Alias for the object containing the field this entity field is mapped on. Used in typed list selection lists.

The window specification for an OVER() clause to apply to this field in a select list. Not used elsewhere. WindowSpecification results in an OVER() clause which is appended to an aggregatefunction and expression.

The precision of the value for this field. Value initially set for this field is the precision of the database column this field is mapped on.

Gets the real datatype. This is the underlying datatype of DataType and if that's a Nullable(Of T) it's the type of T. This is a helper property so it's not determined over and over again for every field during a fetch.

The scale of the value for this field. Value initially set for this field is the scale of the database column this field is mapped on.

The name of the catalog the SourceSchemaName is located in.

The type of the Column mapped onto the EntityField(2). The value stored here is the string representation of the enum value of the type, e.g. SqlDbType.Int will result in "Int"

Flag if the Column mapped onto the entityfield is nullable or not. Used for update/insert operations on the column

The maximum length of the value of the entityfield (string/binary data). Is ignored for entityfields which hold non-string and non-binary values. ColumnMaxLength Used for update/insert operations on the column

The name of the corresponding column in a view or table for an entityfield. This name is used to map a column in a resultset onto the entity field.

The precision of the Column mapped onto the entityfield. Used for update/insert operations on the column

The scale of the Column mapped onto the entityfield. Used for update/insert operations on the column

The name of the source object which holds SourceColumnName. Can be a view or a table (or synonym of those). Used to generate SQL on the fly.

The name of the schema which holds SourceObjectName. Schema is used to generate SQL on the fly. A common schema name in SqlServer is f.e. 'dbo'.

Returns the concatenated result of catalog, schema and objectname. If all are empty it will result in "..".

Gets the type converter to use. Only set through constructor and when a conversion is required from the .NET type returned by the ADO.NET provider and the defined .NET type for this field.

Clones this field instance

Overwrites the current value with the value passed. This bypasses value checking and field properties like readonly. Used by internal code only. Do not call this from your code.

Overwrites the current value with the value passed. This bypasses value checking and field properties like readonly. Used by internal code only. Do not call this from your code.

Gets the discriminator column flag.

Overrides the GetHashCode() method. It will return the hashcode of the value of the field as the hashcode.

Returns the hashcode for this field which can be used for an expression key. This value is based on the field info hashcode and alias, as well as expression hashcode (if present)

Deserializes the field's definition data on the xml reader into a field instance

Deserializes the data on the xml reader into a fieldinfo instance

Sets the EntityField's AggregateFunctionToApply property

Sets the Entity Field's ExpressionToToApply property

Sets the field alias.

Sets the FieldIndex, if FieldInfo is null. Used in DefineField.

Sets the entity field's ObjectAlias property to the specified value

Sets the entity field's OverClauseToApply property

Serializes the field's definition as xml to the writer specified.

Serializes object as xml to the writer specified.

Writes the XML of this Field object to the writer specified

Converts this EntityField2 to an XmlNode.

Creates a new expression: leftoperand + rightoperand

Defines the mapping for the field.AddDays(numberOfDays) method mapping

Defines the mapping for the field.AddHours(numberOfHours) method mapping

Defines the mapping for the field.AddMilliseconds(numberOfMilliseconds) method mapping

Defines the mapping for the field.AddMinutes(numberOfMinutes) method mapping

Defines the mapping for the field.AddMonths(numberOfMonths) method mapping

Defines the mapping for the field.AddSeconds(numberOfSeconds) method mapping

Defines the mapping for the field.AddYears(numberOfYears) method mapping

Creates a new expression: leftoperand AND rightoperand

Specifies the field alias on the field, returning the field.

Specifies the field alias on the field, returning the field.

Creates an ascending sort clause for the field specified

Places the Avg aggregate function on the field specified

Places the Avg(Distinct) aggregate function on the field specified

Creates a Between predicate which is true if the field specified is between valueBegin and valueEnd, valueBegin and valueEnd included.

Creates a new expression: leftoperand BitwiseAnd rightoperand

Creates a new expression: leftoperand BitwiseOr rightoperand

Creates a new expression: leftoperand BitwiseXor rightoperand

Specifies the result type of the field to be TResult

Defines the mapping for the field.Char[index] property to method mapping

Creates a Like predicate using the pattern: '%pattern%' for the field specified.

Places the Count aggregate function on the field specified

Places the CountBig aggregate function on the field specified

Places the CountBig(Distinct) aggregate function on the field specified

Places the Count(Distinct) aggregate function on the field specified

Defines the mapping for the field.Date property to method mapping

Defines the mapping for the field.Day property to method mapping

Creates a descending sort clause for the field specified

Creates a new expression: leftoperand / rightoperand

Creates a Like predicate using the pattern: '%pattern' for the field specified.

Creates an equality comparison predicate between the expression and the value specified. If the value is null or DBNull.Value a null comparison predicate is created

Creates an equality comparison predicate between the two fields specified.

Creates an equality comparison predicate between the field and the expression specified.

Creates a greater or equal comparison predicate between the expression and the value specified.

Creates a greater or equal comparison predicate between the two fields specified.

Creates a greater or equal comparison predicate between the field and the expression specified.

Creates a greater than comparison predicate between the expression and the value specified.

Creates a greater than comparison predicate between the two fields specified.

Creates a greater than comparison predicate between the field and the expression specified.

Defines the mapping for the field.Hour property to method mapping

Creates a Field IN (values) predicate

Creates a Field IN (query) predicate

Defines the mapping for the field.IndexOf(value) method mapping

Generates a negated FieldCompareNull predicate on the field specified.

Generates a FieldCompareNull predicate on the field specified.

Defines the mapping for the field.Length property to method mapping, if field represents a string value.

Creates a lesser or equal comparison predicate between the expression and the value specified.

Creates a lesser or equal comparison predicate between the two fields specified.

Creates a lesser or equal comparison predicate between the field and the expression specified.

Creates a lesser than comparison predicate between the expression and the value specified.

Creates a lesser than comparison predicate between the two fields specified.

Creates a lesser than comparison predicate between the field and the expression specified.

Creates a Like predicate for the field specified using the pattern specified. The pattern has to contain the wildcards required.

Places the Max aggregate function on the field specified

Defines the mapping for the field.Millisecond property to method mapping

Places the Min aggregate function on the field specified

Defines the mapping for the field.Minute property to method mapping

Creates a new expression: leftoperand MOD rightoperand

Defines the mapping for the field.Month property to method mapping

Creates a new expression: leftoperand * rightoperand

Creates a Between predicate which is true if the field specified is not between valueBegin and valueEnd, valueBegin and valueEnd included.

Creates a negated equality comparison predicate between the expression and the value specified. If the value is null or DBNull.Value a null comparison predicate is created

Creates a negated equality comparison predicate between the two fields specified.

Creates a negated equality comparison predicate between the field and the expression specified.

Creates a NOT (Field IN (values)) predicate

Creates a NOT (Field IN (query)) predicate

Creates a new expression: leftoperand Or rightoperand

Places a new WindowSpecification in the specified field's OverClauseToApply property with no arguments

Places a new WindowSpecification in the specified field's OverClauseToApply property with the arguments specified

Places a new WindowSpecification in the specified field's OverClauseToApply property with the arguments specified

Places a new WindowSpecification in the specified field's OverClauseToApply property with the arguments specified

Places the specified WindowSpecification in the specified field's OverClauseToApply property

Places a new WindowSpecification in the specified field's OverClauseToApply property with the arguments specified

Places a new WindowSpecification in the specified field's OverClauseToApply property with the arguments specified

Places a new WindowSpecification in the specified field's OverClauseToApply property with the arguments specified

Places a new WindowSpecification in the specified field's OverClauseToApply property with the arguments specified

Places a new WindowSpecification in the specified field's OverClauseToApply property with the arguments specified

Places a new WindowSpecification in the specified field's OverClauseToApply property with the arguments specified

Defines the mapping for the field.Replace(oldValue, newValue) method mapping

Defines the mapping for the field.Second property to method mapping

Creates a Like predicate using the pattern: 'pattern%' for the fieldl specified.

Places the StDev aggregate function on the field specified

Places the StDev(Distinct) aggregate function on the field specified

Creates a new expression: leftoperand - rightoperand

Defines the mapping for the field.Substring(startIndex) method mapping

Defines the mapping for the field.Substring(startIndex, length) method mapping

Places the Sum aggregate function on the field specified

Places the Sum(Distinct) aggregate function on the field specified

Defines the mapping for the field.ToLower() method mapping

Defines the mapping for the field.ToUnicode() method mapping

Defines the mapping for the field.ToUpper() method mapping

Placeholder method which is used in a Select(lambda func) projection inside the lambda to specify the type of the result of the passed in field.

Placeholder method which is used in a generated lambda from a call to Select<T>>(fields) to specify the type of the result of the passed in field and as well the ordinal the source field has in the actual projection of the query.

Defines the mapping for the field.Trim() method mapping

Places the Variance aggregate function on the field specified

Places the Variance(Distinct) aggregate function on the field specified

Defines the mapping for the field.Year property to method mapping