Examples with Complex org.apache.hadoop.hive.serde2.thrift.test.Complex used on opensource projects

Example 21 with Complex

use of org.apache.hadoop.hive.serde2.thrift.test.Complex in project hive by apache.

the class SemanticAnalyzer method genConvertCol.

private ArrayList<ExprNodeDesc> genConvertCol(String dest, QB qb, Table tab, TableDesc table_desc, Operator input, List<Integer> posns, boolean convert) throws SemanticException {
    StructObjectInspector oi = null;
    try {
        Deserializer deserializer = table_desc.getDeserializerClass().newInstance();
        SerDeUtils.initializeSerDe(deserializer, conf, table_desc.getProperties(), null);
        oi = (StructObjectInspector) deserializer.getObjectInspector();
    } catch (Exception e) {
        throw new SemanticException(e);
    }
    List<? extends StructField> tableFields = oi.getAllStructFieldRefs();
    ArrayList<ColumnInfo> rowFields = opParseCtx.get(input).getRowResolver().getColumnInfos();
    // Check column type
    int columnNumber = posns.size();
    ArrayList<ExprNodeDesc> expressions = new ArrayList<ExprNodeDesc>(columnNumber);
    for (Integer posn : posns) {
        ObjectInspector tableFieldOI = tableFields.get(posn).getFieldObjectInspector();
        TypeInfo tableFieldTypeInfo = TypeInfoUtils.getTypeInfoFromObjectInspector(tableFieldOI);
        TypeInfo rowFieldTypeInfo = rowFields.get(posn).getType();
        ExprNodeDesc column = new ExprNodeColumnDesc(rowFieldTypeInfo, rowFields.get(posn).getInternalName(), rowFields.get(posn).getTabAlias(), rowFields.get(posn).getIsVirtualCol());
        if (convert && !tableFieldTypeInfo.equals(rowFieldTypeInfo)) {
            // need to do some conversions here
            if (tableFieldTypeInfo.getCategory() != Category.PRIMITIVE) {
                // cannot convert to complex types
                column = null;
            } else {
                column = ParseUtils.createConversionCast(column, (PrimitiveTypeInfo) tableFieldTypeInfo);
            }
            if (column == null) {
                String reason = "Cannot convert column " + posn + " from " + rowFieldTypeInfo + " to " + tableFieldTypeInfo + ".";
                throw new SemanticException(ErrorMsg.TARGET_TABLE_COLUMN_MISMATCH.getMsg(qb.getParseInfo().getDestForClause(dest), reason));
            }
        }
        expressions.add(column);
    }
    return expressions;
}