private DatabaseQuery populateQueryImp(
CharSequence jpqlQuery, DatabaseQuery query, AbstractSession session) {
try {
// Parse the JPQL query with the most recent JPQL grammar
JPQLExpression jpqlExpression =
new JPQLExpression(jpqlQuery, DefaultEclipseLinkJPQLGrammar.instance(), isTolerant());
// Create a context that caches the information contained in the JPQL query
// (especially from the FROM clause)
JPQLQueryContext queryContext = new JPQLQueryContext(jpqlGrammar());
queryContext.cache(session, query, jpqlExpression, jpqlQuery);
// Validate the JPQL query, which will use the JPQL grammar matching the validation level
validate(queryContext, jpqlExpression);
// Create the DatabaseQuery by visiting the parsed tree
DatabaseQueryVisitor visitor = new DatabaseQueryVisitor(queryContext, jpqlQuery);
jpqlExpression.accept(visitor);
// Add the input parameter types to the DatabaseQuery
if (query == null) {
query = queryContext.getDatabaseQuery();
addArguments(queryContext, query);
}
return query;
} catch (JPQLException exception) {
throw exception;
} catch (Exception exception) {
throw buildUnexpectedException(jpqlQuery, exception);
}
}
/** {@inheritDoc} */
@Override
public void visit(SelectStatement expression) {
ObjectLevelReadQuery query = queryContext.getDatabaseQuery();
// Create and prepare the query
if (query == null) {
query = buildReadAllQuery(expression);
queryContext.setDatabasQuery(query);
query.setJPQLString(jpqlQuery);
((JPQLCallQueryMechanism) query.getQueryMechanism()).getJPQLCall().setIsParsed(true);
}
// Now populate it
expression.accept(buildVisitor(query));
}
/** {@inheritDoc} */
@Override
public void visit(UpdateStatement expression) {
UpdateAllQuery query = queryContext.getDatabaseQuery();
// Create and prepare the query
if (query == null) {
query = new UpdateAllQuery();
queryContext.setDatabasQuery(query);
query.setJPQLString(jpqlQuery);
((JPQLCallQueryMechanism) query.getQueryMechanism()).getJPQLCall().setIsParsed(true);
}
query.setSession(queryContext.getSession());
query.setShouldDeferExecutionInUOW(false);
// Now populate it
UpdateQueryVisitor visitor = new UpdateQueryVisitor(queryContext, query);
expression.accept(visitor);
}
