private void setupSelectListInputInfo() throws SemanticException {
selectListInputTypeCheckCtx = new TypeCheckCtx(selectListInputRowResolver);
selectListInputTypeCheckCtx.setUnparseTranslator(null);
/*
* create SelectListOI
*/
selectListInputOI = PTFTranslator.getStandardStructOI(selectListInputRowResolver);
}
public static ExprNodeDesc buildExprNode(ASTNode expr, TypeCheckCtx typeCheckCtx)
throws SemanticException {
// todo: use SemanticAnalyzer::genExprNodeDesc
// currently SA not available to PTFTranslator.
Map<ASTNode, ExprNodeDesc> map = TypeCheckProcFactory.genExprNode(expr, typeCheckCtx);
ExprNodeDesc desc = map.get(expr);
if (desc == null) {
String errMsg = typeCheckCtx.getError();
if (errMsg == null) {
errMsg = "Error in parsing ";
}
throw new SemanticException(errMsg);
}
return desc;
}
@Override
protected ExprNodeColumnDesc processQualifiedColRef(
TypeCheckCtx ctx, ASTNode expr, Object... nodeOutputs) throws SemanticException {
String tableAlias =
BaseSemanticAnalyzer.unescapeIdentifier(expr.getChild(0).getChild(0).getText());
// NOTE: tableAlias must be a valid non-ambiguous table alias,
// because we've checked that in TOK_TABLE_OR_COL's process method.
ColumnInfo colInfo =
getColInfo(
(JoinTypeCheckCtx) ctx,
tableAlias,
((ExprNodeConstantDesc) nodeOutputs[1]).getValue().toString(),
expr);
if (colInfo == null) {
ctx.setError(ErrorMsg.INVALID_COLUMN.getMsg(expr.getChild(1)), expr);
return null;
}
return new ExprNodeColumnDesc(
colInfo.getType(), colInfo.getInternalName(), tableAlias, colInfo.getIsVirtualCol());
}