Summary of Classes

SourcePro : DB Interface Module User’s Guide : PART I Introduction : Class Overview : Summary of Classes

Summary of Classes

Now that we have described the categories of classes in the DB Interface Module, we list the individual classes and their operations in Table 3. In Table 4, we list the classes of the Essential Tools Module of SourcePro Core that are referenced by the DB Interface Module’s API.

Table 3 – Summary of the classes of the DB Interface Module
Class	Operation
RWDBAssignment	Represents the SQL Set x = y phrase
RWDBBlob	Stores Binary Large Objects
RWDBBoundExpr	Represents a placeholder in dynamic SQL statements
RWDBBulkInserter	Encapsulates the bulk write mechanism of the DB Interface Module
RWDBBulkReader	Encapsulates the bulk read mechanism of the DB Interface Module
RWDBCheckConstraint	Represents a check constraint on a table
RWDBCheckConstraintList	Holds an ordered collection of RWDBCheckConstraint instances
RWDBCollectableExpr	SQL expression that can be placed in an RWCollection
RWDBColumn	References a specific column in a table
RWDBCompoundSelector	Created as the result of the set operations UNION, INTERSECTION, and DIFFERENCE on RWDBSelector
RWDBConnection	Represents a database connection
RWDBConnCallback	Interface handle class for connection callback implementation.
RWDBConnCallbackImp	Abstract base class for users to derive from and implement connection callbacks.
RWDBCriterion	Represents an SQL expression evaluated as a boolean
RWDBCritFormDefinition	Defines boolean SQL expressions using replacement text
RWDBCritFuncDef{n} i.e. RWDBCritFuncDef0, RWDBCritFuncDef1, etc.	Defines boolean SQL expressions with n arguments
RWDBCursor	Represents a database cursor
RWDBDatabase	Represents a database
RWDBDatabaseCallback	Interface handle class for database callback implementation.
RWDBDatabaseCallbackImp	Abstract base class for users to derive from and implement database callbacks.
RWDBDeleter	Encapsulates the SQL DELETE statement
RWDBDuration	Stores a time period
RWDBEnvironmentHandle	Provides methods an application can use to set or retrieve database-vendor-specific connect time and configuration parameters
RWDBExpr	Codes SQL expressions using C++ syntax
RWDBExprFormDefinition	Defines SQL expressions using replacement text
RWDBExprFuncDef{n}, i.e. RWDBExprFuncDef0, RWDBExprFuncDef1, etc.	Defines SQL functions with n arguments
RWDBForeignKey	Encapsulates the SQL notion of foreign keys
RWDBForeignKeyList	Represents a list of foreign keys associated with a table
RWDBIdentityConstraint	Represents an identity constraint on a column within a table
RWDBInserter	Encapsulates the SQL INSERT statement
RWDBJoinExpr	Defines SQL JOIN expressions for ANSI-compliant servers
RWDBManager	Produces database-dependent instances of RWDBDatabase
RWDBMBString	Stores a multibyte string
RWDBMemTable	Stores tabular data in memory
RWDBMultiRow	Adds row semantics to collections of RWDBTBuffer s
RWDBNullIndicator	Used to detect NULL values
RWDBOSql	Used to encapsulate an SQL statement and its input and output bindings.
RWDBPhraseBook	Standardizes SQL dialects
RWDBPrimaryKey	Represents a primary key
RWDBReader	Reads tabular data one row at a time
RWDBResult	Represents a sequence of 0 or more tables of results
RWDBRow	Stores a single row of data
RWDBSchema	Contains a list of column definitions
RWDBSelector	Encapsulates the SQL SELECT statement
RWDBSelectorBase	The base class for RWDBSelector and RWDBCompoundSelector. This class should be treated as an abstract base class.
RWDBSimpleCaseExpr	Defines simple SQL CASE expressions
RWDBSearchedCaseExpr	Defines searched SQL CASE expressions
RWDBStatus	Represents the status of an object or an operation. Used in error handling.
RWDBStoredProc	Represents a database stored procedure
RWDBSystemHandle	Provides access to the underlying vendor-specific database API
RWDBTable	Represents tabular data, including database tables and result sets
RWDBTBuffer<T>	Encapsulates buffers of data that can be bound to the SQL statement encapsulated by RWDBOSql. May also be used in RWDBBulkInserter and RWDBBulkReader.
RWDBTPtrMemTable<T,C>	A template version of tabular data in memory
RWDBTracer	Provides runtime tracing
RWDBUniqueConstraint	Represents a unique constraint
RWDBUniqueConstraintList	Holds an ordered collection of RWDBUniqueConstraint instances
RWDBUpdater	Encapsulates the SQL UPDATE statement
RWDBValue	Normalizes database data types

Table 4 – Classes of the Essential Tools Module of SourcePro Core that are referenced by the API of the DB Interface Module
Class	Operation
RWBasicUString	Facilitates storage and manipulation of UTF-16 Unicode strings
RWCollectable	Abstract base class for collectable objects
RWCString	Facilitates string manipulation like the standard C functions
RWDate	Represents a date, stored as a Julian day number
RWDateTime	Represents a date and time with millisecond precision, stored as the number of milliseconds since 00:00:00:000 January 1, 1901 UTC
RWDecimalPortable	Represents an arbitrary precision decimal fraction as a character string
RWLocale	An abstract base class that defines an interface for formatting dates, times, numbers, and currency to and from strings
RWTimeTuple	Represents a date and time with picosecond precision but no facility to perform calculations or comparisons
RWTimeTupleOffset	Similar to RWTimeTuple but holds a UTC offset
RWWString	Facilitates manipulation of wide character strings