public void token(String token, QueryTranslatorImpl q) throws QueryException {
// start by looking for HQL keywords...
String lcToken = token.toLowerCase();
if ( lcToken.equals( "," ) ) {
if ( !( expectingJoin | expectingAs ) ) throw new QueryException( "unexpected token: ," );
expectingJoin = false;
expectingAs = false;
}
else if ( lcToken.equals( "join" ) ) {
if ( !afterJoinType ) {
if ( !( expectingJoin | expectingAs ) ) throw new QueryException( "unexpected token: join" );
// inner joins can be abbreviated to 'join'
joinType = JoinFragment.INNER_JOIN;
expectingJoin = false;
expectingAs = false;
}
else {
afterJoinType = false;
}
}
else if ( lcToken.equals( "fetch" ) ) {
if ( q.isShallowQuery() ) throw new QueryException( QueryTranslator.ERROR_CANNOT_FETCH_WITH_ITERATE );
if ( joinType == NONE ) throw new QueryException( "unexpected token: fetch" );
if ( joinType == JoinFragment.FULL_JOIN || joinType == JoinFragment.RIGHT_OUTER_JOIN ) {
throw new QueryException( "fetch may only be used with inner join or left outer join" );
}
afterFetch = true;
}
else if ( lcToken.equals( "outer" ) ) {
// 'outer' is optional and is ignored
if ( !afterJoinType ||
( joinType != JoinFragment.LEFT_OUTER_JOIN && joinType != JoinFragment.RIGHT_OUTER_JOIN )
) {
throw new QueryException( "unexpected token: outer" );
}
}
else if ( JOIN_TYPES.containsKey( lcToken ) ) {
if ( !( expectingJoin | expectingAs ) ) throw new QueryException( "unexpected token: " + token );
joinType = ( ( Integer ) JOIN_TYPES.get( lcToken ) ).intValue();
afterJoinType = true;
expectingJoin = false;
expectingAs = false;
}
else if ( lcToken.equals( "class" ) ) {
if ( !afterIn ) throw new QueryException( "unexpected token: class" );
if ( joinType != NONE ) throw new QueryException( "outer or full join must be followed by path expression" );
afterClass = true;
}
else if ( lcToken.equals( "in" ) ) {
if (alias == null ){
memberDeclarations = true;
afterMemberDeclarations = false;
}
else if ( !expectingIn ) {
throw new QueryException( "unexpected token: in" );
} else {
afterIn = true;
expectingIn = false;
}
}
else if ( lcToken.equals( "as" ) ) {
if ( !expectingAs ) throw new QueryException( "unexpected token: as" );
afterAs = true;
expectingAs = false;
}
else if ( "(".equals( token ) ){
if( !memberDeclarations ) throw new QueryException( "unexpected token: (" );
//TODO alias should be null here
expectingPathExpression = true;
}
else if ( ")".equals( token ) ){
// memberDeclarations = false;
// expectingPathExpression = false;
afterMemberDeclarations = true;
}
else {
if ( afterJoinType ) throw new QueryException( "join expected: " + token );
if ( expectingJoin ) throw new QueryException( "unexpected token: " + token );
if ( expectingIn ) throw new QueryException( "in expected: " + token );
// now anything that is not a HQL keyword
if ( afterAs || expectingAs ) {
// (AS is always optional, for consistency with SQL/OQL)
// process the "new" HQL style where aliases are assigned
// _after_ the class name or path expression ie. using
// the AS construction
if ( entityName != null ) {
q.setAliasName( token, entityName );
}
else if(collectionName != null ) {
q.setAliasName( token, collectionName );
}
else {
throw new QueryException( "unexpected: as " + token );
}
afterAs = false;
expectingJoin = true;
expectingAs = false;
entityName = null;
collectionName = null;
memberDeclarations = false;
expectingPathExpression = false;
afterMemberDeclarations = false;
}
else if ( afterIn ) {
// process the "old" HQL style where aliases appear _first_
// ie. using the IN or IN CLASS constructions
if ( alias == null ) throw new QueryException( "alias not specified for: " + token );
if ( joinType != NONE ) throw new QueryException( "outer or full join must be followed by path expression" );
if ( afterClass ) {
// treat it as a classname
Queryable p = q.getEntityPersisterUsingImports( token );
if ( p == null ) throw new QueryException( "persister not found: " + token );
q.addFromClass( alias, p );
}
else {
// treat it as a path expression
peParser.setJoinType( JoinFragment.INNER_JOIN );
peParser.setUseThetaStyleJoin( true );
ParserHelper.parse( peParser, q.unalias( token ), ParserHelper.PATH_SEPARATORS, q );
if ( !peParser.isCollectionValued() ) throw new QueryException( "path expression did not resolve to collection: " + token );
String nm = peParser.addFromCollection( q );
q.setAliasName( alias, nm );
}
alias = null;
afterIn = false;
afterClass = false;
expectingJoin = true;
}
else if( memberDeclarations && expectingPathExpression ){
expectingAs = true;
peParser.setJoinType( JoinFragment.INNER_JOIN );
peParser.setUseThetaStyleJoin( false );
ParserHelper.parse( peParser, q.unalias( token ), ParserHelper.PATH_SEPARATORS, q );
if ( !peParser.isCollectionValued() ) throw new QueryException( "path expression did not resolve to collection: " + token );
collectionName = peParser.addFromCollection( q );
expectingPathExpression = false;
memberDeclarations = false;
}
else {
// handle a path expression or class name that
// appears at the start, in the "new" HQL
// style or an alias that appears at the start
// in the "old" HQL style
Queryable p = q.getEntityPersisterUsingImports( token );
if ( p != null ) {
// starts with the name of a mapped class (new style)
if ( joinType != NONE ) throw new QueryException( "outer or full join must be followed by path expression" );
entityName = q.createNameFor( p.getEntityName() );
q.addFromClass( entityName, p );
expectingAs = true;
}
else if ( token.indexOf( '.' ) < 0 ) {