QueryChecker

All Known Implementing Classes:

DBChecker
```
public interface QueryChecker
```
Used at the end of the parsing of each ADQL query by the ADQLParser, to check the generated ADQLQuery object.

Usually, it consists to check the existence of referenced columns and tables. In this case, one default implementation of this interface can be used: DBChecker

Version:

1.2 (12/2013)

Author:

Grégory Mantelet (CDS;ARI)

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  void check(ADQLQuery query)
  Checks the given ADQLQuery.

- Method Detail
  - check
```
void check(ADQLQuery query)
    throws ParseException
```
    Checks the given ADQLQuery.
    
    Important note: All subqueries must also be checked when calling this function!
    
    If the query is correct, nothing happens. However at the first detected error, a ParseException is thrown.
    
    Parameters:
    
    query - The query to check.
    
    Throws:
    
    ParseException - If the given query is not correct.