org.activemath.content.query
Class QueryEngine

java.lang.Object
  org.activemath.content.query.QueryEngine

public class QueryEngine
extends Object

Constructor Summary

QueryEngine()

Method Summary

List	execQuery(String query) Constructs a Query object.
void	registerDB(String id, DBCaller db_call) Register a DBCaller for a specific DB with an ID.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

QueryEngine

public QueryEngine()

Method Detail

execQuery

public List execQuery(String query)
               throws QueryEngineException

Constructs a Query object. query may be one of two types for queries: queries which expect a boolean value returned and queries which expect a list of item IDs returned.

Returns:

So in the case a boolean value is expected, an empty List represents false and anything else represents true

Throws:

QueryEngineException

registerDB

public void registerDB(String id,
                       DBCaller db_call)

Register a DBCaller for a specific DB with an ID.