@Override
public Object process(
Node nd, Stack<Node> stack, NodeProcessorCtx procCtx, Object... nodeOutputs)
throws SemanticException {
JoinTypeCheckCtx ctx = (JoinTypeCheckCtx) procCtx;
if (ctx.getError() != null) {
return null;
}
ASTNode expr = (ASTNode) nd;
ASTNode parent = stack.size() > 1 ? (ASTNode) stack.get(stack.size() - 2) : null;
if (expr.getType() != HiveParser.TOK_TABLE_OR_COL) {
ctx.setError(ErrorMsg.INVALID_COLUMN.getMsg(expr), expr);
return null;
}
assert (expr.getChildCount() == 1);
String tableOrCol = BaseSemanticAnalyzer.unescapeIdentifier(expr.getChild(0).getText());
boolean qualifiedAccess = (parent != null && parent.getType() == HiveParser.DOT);
ColumnInfo colInfo = null;
if (!qualifiedAccess) {
colInfo = getColInfo(ctx, null, tableOrCol, expr);
// It's a column.
return new ExprNodeColumnDesc(colInfo);
} else if (hasTableAlias(ctx, tableOrCol, expr)) {
return null;
} else {
// Qualified column access for which table was not found
throw new SemanticException(ErrorMsg.INVALID_TABLE_ALIAS.getMsg(expr));
}
}
@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());
}
public void validate() throws SemanticException {
if ((this.getCols() == null) || (this.getCols().size() == 0)) {
// for now make sure that serde exists
if (StringUtils.isEmpty(this.getSerName())
|| !SerDeUtils.shouldGetColsFromSerDe(this.getSerName())) {
throw new SemanticException(ErrorMsg.INVALID_TBL_DDL_SERDE.getMsg());
}
return;
}
if (this.getStorageHandler() == null) {
try {
Class<?> origin = Class.forName(this.getOutputFormat(), true, JavaUtils.getClassLoader());
Class<? extends HiveOutputFormat> replaced =
HiveFileFormatUtils.getOutputFormatSubstitute(origin);
if (replaced == null) {
throw new SemanticException(ErrorMsg.INVALID_OUTPUT_FORMAT_TYPE.getMsg());
}
} catch (ClassNotFoundException e) {
throw new SemanticException(ErrorMsg.INVALID_OUTPUT_FORMAT_TYPE.getMsg());
}
}
List<String> colNames = ParseUtils.validateColumnNameUniqueness(this.getCols());
if (this.getBucketCols() != null) {
// all columns in cluster and sort are valid columns
Iterator<String> bucketCols = this.getBucketCols().iterator();
while (bucketCols.hasNext()) {
String bucketCol = bucketCols.next();
boolean found = false;
Iterator<String> colNamesIter = colNames.iterator();
while (colNamesIter.hasNext()) {
String colName = colNamesIter.next();
if (bucketCol.equalsIgnoreCase(colName)) {
found = true;
break;
}
}
if (!found) {
throw new SemanticException(ErrorMsg.INVALID_COLUMN.getMsg());
}
}
}
if (this.getSortCols() != null) {
// all columns in cluster and sort are valid columns
Iterator<Order> sortCols = this.getSortCols().iterator();
while (sortCols.hasNext()) {
String sortCol = sortCols.next().getCol();
boolean found = false;
Iterator<String> colNamesIter = colNames.iterator();
while (colNamesIter.hasNext()) {
String colName = colNamesIter.next();
if (sortCol.equalsIgnoreCase(colName)) {
found = true;
break;
}
}
if (!found) {
throw new SemanticException(ErrorMsg.INVALID_COLUMN.getMsg());
}
}
}
if (this.getPartCols() != null) {
// there is no overlap between columns and partitioning columns
Iterator<FieldSchema> partColsIter = this.getPartCols().iterator();
while (partColsIter.hasNext()) {
FieldSchema fs = partColsIter.next();
String partCol = fs.getName();
PrimitiveObjectInspectorUtils.PrimitiveTypeEntry pte =
PrimitiveObjectInspectorUtils.getTypeEntryFromTypeName(fs.getType());
if (null == pte) {
throw new SemanticException(
ErrorMsg.PARTITION_COLUMN_NON_PRIMITIVE.getMsg()
+ " Found "
+ partCol
+ " of type: "
+ fs.getType());
}
Iterator<String> colNamesIter = colNames.iterator();
while (colNamesIter.hasNext()) {
String colName = BaseSemanticAnalyzer.unescapeIdentifier(colNamesIter.next());
if (partCol.equalsIgnoreCase(colName)) {
throw new SemanticException(ErrorMsg.COLUMN_REPEATED_IN_PARTITIONING_COLS.getMsg());
}
}
}
}
/* Validate skewed information. */
ValidationUtility.validateSkewedInformation(
colNames, this.getSkewedColNames(), this.getSkewedColValues());
}