Examples of org.exolab.castor.jdo.oql.ParseTreeWalker

org.exolab.castor.jdo.oql.ParseTreeWalker
A class which walks the parse tree created by the parser to check for errors and translate to SQL. @author Nissim Karpenstein @version $Revision: 7950 $ $Date: 2006-04-25 15:08:23 -0600 (Tue, 25 Apr 2006) $

        }


        TransactionContext trans = ((AbstractDatabaseImpl) _database).getTransaction();
        DbMetaInfo dbInfo = trans.getConnectionInfo(_dbEngine);


        ParseTreeWalker walker = new ParseTreeWalker(_dbEngine, parseTree,
                _database.getClassLoader(), dbInfo);


        _objClass = walker.getObjClass();
        _clsDesc = walker.getClassDescriptor();
        _expr = walker.getQueryExpression();
        _paramInfo = walker.getParamInfo();
        _projectionType = walker.getProjectionType();
        _projectionInfo = walker.getProjectionInfo();


        // create the types array and fill it
        _bindTypes = new Class[_paramInfo.size()];
        int paramIndex = 0;
        for (Enumeration e = _paramInfo.elements(); e.hasMoreElements(); ) {

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        _dbEngine = _dbImpl.getLockEngine();
        if ( _dbEngine == null )
            throw new QueryException( "Could not get a persistence engine" );


        ParseTreeWalker walker = new ParseTreeWalker(_dbEngine, parseTree, _dbImpl.getClassLoader());


        _objClass = walker.getObjClass();
        _clsDesc = walker.getClassDescriptor();
        _expr = walker.getQueryExpression();
        _paramInfo = walker.getParamInfo();
        _projectionType = walker.getProjectionType();
        _pathInfo = walker.getPathInfo();




        //port param info types back to the format of old bind types.
        //first get the maximum SQL param.
        int max = 0;

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