| AbstractDataWriter |
An abstract writer-implementation - contains helper getters for all writer parameters
|
| BindingItemAttribute |
This class is container of a wrq:A of binding item in a query.
|
| BindingItemWithMetaData |
This class represents a BindingItem in a concrete statement
It adds for example alias, aggregation and the column number
|
| DataLoader |
This algorithms
reads input from input options,
uses generator to interpret the options (generate SQL),
executes sql and
writes the resultSet out into the writer.
|
| SqlFromFullSelect |
Takes the parent node of SELECTs with SET operators (formally a "full-select") in Wrq format
and generates SQL from it together with the bound variables, ready to be executed
|
| SqlFromSubSelect |
Takes a single wrq:Select (formally a "sub-select") and turns it into a SQLStatementWithParams
|
| SQLStatementWithParams |
Represents part of an SQL string and the values for bound variables
|
| SubjectSettings2Sql |
Returns a where clause based on the SubjectFilters of the BindingSet and the current Subject's permissions Initially taken from WrsSqlGenerator.
|
| VirtualBindingItem |
Constructs a virtual BindingItem,
behaves like a standard BindingItem but derives its sql expression and type-name from a wrq:Calc element
|
| Wrq2Sql |
Takes a Wrq and generates SQL from it
|
| WrqBindingItem |
Represents a BindingItem in a Wrq, it is it has knowledge of the underlying BindingItem and the current query
There can be multiple WrqBindingItem for a BindingItem(FromRel), to reflect different behaviora like aggr for example in select and in grouping clause
|
| WrqBindingSetFromDerivedTable |
Represents a virtual BindingSet resulting from a sub-select during the execution of a Wrq
|
| WrqBindingSetFromTableReference |
Represents a virtual BindingSet resulting from the children of wrq:From, i.e. a table reference
A table reference can be a plain table name or joined tables factors,
i.e. table names, derived table expressions or references to CTE
Mostly it deals with the handling of wrq:Join, but for consistency we also take care for cases without
|
| WrqBindingSetRef |
Wrapper for BindingSets that can be referenced more than one in a query, mainly adds the sql table alias for the current occurrence
This can be a StandardBindingSet and a CTE
Implements WrqBindingSet
|
| WrqBindingSetVirtual |
Represents a virtual BindingSet derived on runtime from parts of a Wrs
|
| WrqCalc2Sql |
Parses a Wrq and outputs SQL
|
| WrqFilter2Sql |
Parses a f:Filter expression and returns the SQL Where expression
For older change history, see WrsSqlGenerator
|
| WrqGroupBy2Sql |
Parses a wrq:WrsRequest//wrq:Grouping element and returns a sql GROUP BY [GROUPING SET] expression
Initially taken from WrsSqlGenerator.
|
| WrqInfo |
Collects knowledge about the Wrq.
|
| WrqQueryBuilder |
Takes a full Wrq query, formally a "select-statement" and generates SQL from it
[WITH]* SELECT [UNION SELECT]* [ORDER BY]
Children can be recursive full-selects or a sub-selects or it is an empty (no select at all) or a meta-data request (endRow==0 )
One instance of this class only handles one Wrq
NOTE: We do not check the rights, use assurePermittedOnAllResolvedBindingSets() for verifying this
|
| WrsDataWriter |
The default implementation of the IDataWriter - write wrs-xml-format using xml-stream
Write an empty document if the resultSet is null.
|