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IMultiQuery Interface
Multi query interface

Namespace: CMS.DataEngine
Assembly: CMS.DataEngine (in CMS.DataEngine.dll) Version: 12.0.0
Syntax
C#
public interface IMultiQuery : IDataQuery, 
	IDataQuerySettings, IWhereCondition, IQueryParameters, IQueryObject, IDisposable, 
	IQueryObjectWithValue

The IMultiQuery type exposes the following members.

Properties
  NameDescription
Public propertyAllowMaterialization
If true, the query allows materialization
(Inherited from IDataQuery.)
Public propertyClassName
Class name
(Inherited from IDataQuery.)
Public propertyConnectionStringName
Query connection string name
(Inherited from IDataQuery.)
Public propertyCount
Number of actual records retrieved from the database
(Inherited from IDataQuery.)
Public propertyCustomQueryText
Custom query text
(Inherited from IDataQuery.)
Public propertyDataSource
Data source that provides the query data. If not set, the query queries the database directly
(Inherited from IDataQuery.)
Public propertyDataSourceName
Data source identifier that represents the location from which the data are obtained.
(Inherited from IWhereCondition.)
Public propertyDefaultOrderByColumns
Default order by columns used in case if needed, and order by is not specified
(Inherited from IDataQuery.)
Public propertyDefaultQuerySource
Default source of the query in case source is not defined
(Inherited from IDataQuerySettings.)
Public propertyFilterColumns
List of columns used for extra filtering within the query, e.g. "CMS_C, CMS_RN"
(Inherited from IDataQuerySettings.)
Public propertyGroupByColumns
List of columns to group by, by default doesn't group, e.g. "NodeLevel, NodeOwner"
(Inherited from IDataQuerySettings.)
Public propertyHasDataSource
Returns true if the query has specific data source
(Inherited from IDataQuery.)
Public propertyHasGroupBy
Returns true if the given query has group by set
(Inherited from IDataQuerySettings.)
Public propertyHavingCondition
Where condition for the group by on the data, e.g. "DocumentName = 'ABC'"
(Inherited from IDataQuerySettings.)
Public propertyIncludeBinaryData
If true, the query includes the object binary data
(Inherited from IDataQuery.)
Public propertyIsCombinedQuery
If true, this query is combined from several queries. When additional parameters are applied to it, it will be wrapped into a nested query.
(Inherited from IDataQuery.)
Public propertyIsNested
Indicates that this query is nested within another query as its source. This brings certain constraints such as that is cannot use CTE.
(Inherited from IDataQuerySettings.)
Public propertyIsPagedQuery
Returns true if the query has the paging enabled
(Inherited from IDataQuerySettings.)
Public propertyIsSubQuery
If true, the query is a sub-query used in another query. This brings certain constraints such as that it cannot use order by or CTE.
(Inherited from IDataQuerySettings.)
Public propertyMaxRecords
Maximum number of results to return (use for paging together with Offset)
(Inherited from IDataQuerySettings.)
Public propertyName
Object name, empty by default
(Inherited from IQueryObject.)
Public propertyOffset
Index of the first record to return (use for paging together with MaxRecords)
(Inherited from IDataQuerySettings.)
Public propertyOrderByColumns
List of columns by which the result should be sorted, e.g. "NodeLevel, DocumentName DESC"
(Inherited from IDataQuerySettings.)
Public propertyOrderByResultColumns
List of columns for the result order by. If not specified, the result is ordered by sources and global order by.
Public propertyParameters
Query data parameters
(Inherited from IQueryObject.)
Public propertyQueryName
Query name
(Inherited from IDataQuery.)
Public propertyQuerySource
Source of the query
(Inherited from IDataQuerySettings.)
Public propertyQueryText
Query text
(Inherited from IDataQuery.)
Public propertyResult
DataSet with the result
(Inherited from IDataQuery.)
Public propertyReturnsSingleColumn
Returns true if the query returns single column
(Inherited from IDataQuery.)
Public propertySelectColumnsList
List of columns to return, by default returns all columns, e.g. "DocumentName, DocumentID"
(Inherited from IDataQuerySettings.)
Public propertySelectDistinct
If set to true, returns only distinct (different) values.
(Inherited from IDataQuerySettings.)
Public propertySelectResultColumnsList
List of columns to use for results, by default returns all columns defined in the inner queries. Example: "DocumentName, DocumentID"
Public propertySupportsReader
Returns true if the query supports data reader
(Inherited from IDataQuery.)
Public propertyTables
Collection of the result tables
(Inherited from IDataQuery.)
Public propertyTopNRecords
If set, selects only first top N number of records
(Inherited from IDataQuerySettings.)
Public propertyTotalExpression
Total items expression. When defined, used instead default total items for a paged query.
(Inherited from IDataQuerySettings.)
Public propertyTotalRecords
Gets the number of total records when paging is used. Gets updated once the query executes
(Inherited from IDataQuery.)
Public propertyUseTypeColumns
If true (default), the query uses type columns for the output, otherwise it uses only global columns
Public propertyWhereCondition
Where condition on the data, e.g. "DocumentName = 'ABC'"
(Inherited from IWhereCondition.)
Public propertyWhereIsComplex
Returns true if the given where condition contains compound conditions, e. g. "A > 1 AND B = 5"
(Inherited from IWhereCondition.)
Public propertyWhereIsEmpty
Returns true if the where condition is empty
(Inherited from IWhereCondition.)
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Methods
  NameDescription
Public methodApplyParametersTo
Applies this where condition to the target object
(Inherited from IQueryParameters.)
Public methodApplySettings(AbstractQueryObject)
Applies the given settings to the query
(Inherited from IDataQuery.)
Public methodApplySettings(ActionDataQuerySettings)
Applies the given settings to the query
(Inherited from IDataQuery.)
Public methodAsT
Changes the type of the query to another type
(Inherited from IDataQuery.)
Public methodAsIDQuery
Creates an ID query from the given query
(Inherited from IDataQuery.)
Public methodAsMaterializedList
Makes a materialized list from the given query
(Inherited from IDataQuery.)
Public methodAsNestedTResult
Creates a nested query from the given query
(Inherited from IDataQuery.)
Public methodAsSingleColumn
Creates a single column query from the given query
(Inherited from IDataQuery.)
Public methodAsSubQuery
Modifies the query to be able to be used as a sub-query, e.g. for usage in WHERE A IN ([query]). Ensures single column result, and removes order by from the result.
(Inherited from IDataQuery.)
Public methodAsValue
Gets a query expression representing this object as a value
(Inherited from IQueryObjectWithValue.)
Public methodChanged
Marks the object as changed
(Inherited from IQueryObject.)
Public methodCloneObject
Creates the clone of the object.
(Inherited from IQueryObject.)
Public methodCopyPropertiesTo
Copies the properties to the target query.
(Inherited from IQueryParameters.)
Public methodEnsureParameters
Ensures data parameters for the given query
(Inherited from IQueryParameters.)
Public methodExecute
Executes the current query and returns it's results as a DataSet
(Inherited from IDataQuery.)
Public methodExecuteReader
Executes the current query and returns it's results as a data reader
(Inherited from IDataQuery.)
Public methodExpand
Expands the expression by replacing parameters with their values
(Inherited from IQueryParameters.)
Public methodForEachRow
Executes the given action for each item (DataRow) in the result. Processes the items in batches of the given size.
(Inherited from IDataQuery.)
Public methodGetCompleteQueryParameters
Returns query parameter container filled with the complete settings of current query.
(Inherited from IDataQuery.)
Public methodGetCompleteSettings
Gets the complete parameters for the query execution
(Inherited from IDataQuery.)
Public methodGetExecutingQuery
Gets the query to execute against database
(Inherited from IDataQuery.)
Public methodGetExpression
Gets a string expression representing this object
(Inherited from IQueryObjectWithValue.)
Public methodGetFullQueryText
Gets the full query text including resolved parameters
(Inherited from IDataQuery.)
Public methodGetListResultT
Gets the result as a list of values from the first column that the query returns. Excludes null values from the result.
(Inherited from IDataQuery.)
Public methodGetScalarResultT
Gets the scalar
(Inherited from IDataQuery.)
Public methodGetSource
Gets a source for this query
(Inherited from IDataQuery.)
Public methodHasCompatibleSource
Returns true if the given query is an external source
(Inherited from IDataQuery.)
Public methodIncludeDataParameters
Adds the data parameters to the current query parameters
(Inherited from IQueryObject.)
Public methodReturnNoResults
Sets the query to return no results. This action is irreversible, once the query is set to return no results it cannot be changed. This method is used by data engine to forbid access to data that are not allowed to be accessed (e.g. license limitations), without notifying the process about the fact.
(Inherited from IWhereCondition.)
Public methodSelectT
Transforms the current result
(Inherited from IDataQuery.)
Public methodToString
Returns the string representation of the expression, with possibility of expanding parameters
(Inherited from IQueryParameters.)
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See Also