| Interface | Description | 
|---|---|
| QueryObject | 
 Interface providing method for Elements of the visitor pattern to receive visitors. 
 | 
| Visitor | 
 Interface providing methods for Elements of the implementation of the visitor pattern. 
 | 
| Class | Description | 
|---|---|
| Assignment | 
 Assignment used for SQL update statements. 
 | 
| Delete | 
 Class to generate SQL delete query statements. 
 | 
| Insert | 
 Class to generate SQL Insert query statements. 
 | 
| Join | 
 Class holding join informations. 
 | 
| Qualifier | 
 Abstract base class for all qualifiers. 
 | 
| QueryConstants | 
 Constants for SQL queries. 
 | 
| Select | 
 Class to generate SQL select query statements. 
 | 
| Table | 
 Class representing a table of the database. 
 | 
| TableAlias | 
 Visitor constructing queryString. 
 | 
| Update | 
 Class to generate SQL update query statements. 
 | 
| Enum | Description | 
|---|---|
| JoinOperator | 
 Class holding different join types. 
 | 
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