Github user piaoyats commented on a diff in the pull request:
https://github.com/apache/incubator-carbondata/pull/388#discussion_r92091360
--- Diff: core/src/main/java/org/apache/carbondata/core/util/ValueCompressionUtil.java ---
@@ -243,46 +270,64 @@ public static Object getCompressedValues(COMPRESSION_TYPE compType, double[] val
* @param actualDataType
* @return compressor based on actualdatatype
*/
- public static ValueCompressor getValueCompressor(DataType actualDataType) {
- switch (actualDataType) {
- case DATA_BIGINT:
- return new BigIntCompressor();
- default:
- return new DoubleCompressor();
+ public static ValueCompressor getValueCompressor(
+ CompressionFinder compressionFinder) {
+ if (compressionFinder instanceof BigDecimalCompressionFinder) {
+ return new BigDecimalCompressor();
+ } else {
+ switch (compressionFinder.getActualDataType()) {
+ case DATA_BIGINT:
+ return new BigIntCompressor();
+ default:
+ return new DoubleCompressor();
+ }
}
}
- private static ValueCompressonHolder.UnCompressValue[] getUncompressedValues(
- COMPRESSION_TYPE[] compType, DataType[] actualDataType, DataType[] changedDataType) {
-
- ValueCompressonHolder.UnCompressValue[] compressValue =
- new ValueCompressonHolder.UnCompressValue[changedDataType.length];
- for (int i = 0; i < changedDataType.length; i++) {
- switch (compType[i]) {
- case ADAPTIVE:
- compressValue[i] = getUnCompressNone(changedDataType[i], actualDataType[i]);
- break;
-
- case DELTA_DOUBLE:
- compressValue[i] = getUnCompressDecimalMaxMin(changedDataType[i], actualDataType[i]);
- break;
-
- case BIGINT:
- compressValue[i] = getUnCompressNonDecimal(changedDataType[i]);
- break;
-
- case BIGDECIMAL:
- compressValue[i] = new UnCompressByteArray(UnCompressByteArray.ByteArrayType.BIG_DECIMAL);
- break;
+ /**
+ * get uncompressed object
+ * @param compressionFinders : Compression types for measures
+ * @return
+ */
+ private static UnCompressValue[] getUncompressedValues(
+ CompressionFinder[] compressionFinders) {
+ UnCompressValue[] unCompressedValues = new UnCompressValue[compressionFinders.length];
+ for (int i=0; i< compressionFinders.length; i++) {
+ unCompressedValues[i] = getUncompressedValue(compressionFinders[i]);
+ }
+ return unCompressedValues;
+ }
+ /**
+ *
+ * @param compressionFinder bigdecimal compression finder
+ * @return Uncompressed measure object
+ */
+ private static UnCompressValue getUncompressedValue(
+ BigDecimalCompressionFinder compressionFinder) {
+ UnCompressValue leftPart = getUncompressedValue(compressionFinder.getLeftCompType(),
+ compressionFinder.getLeftActualDataType(), compressionFinder.getLeftChangedDataType());
+ UnCompressValue rightPart = getUncompressedValue(compressionFinder.getRightCompType(),
+ compressionFinder.getRightActualDataType(), compressionFinder.getRightChangedDataType());
+ return new UnCompressBigDecimal<>(compressionFinder, leftPart, rightPart);
+ }
- default:
- compressValue[i] = getUnCompressNonDecimalMaxMin(changedDataType[i]);
- }
+ /**
+ *
+ * @param compressionFinder for measure other then bigdecimal
+ * @return
+ */
+ private static UnCompressValue getUncompressedValue(
+ CompressionFinder compressionFinder) {
+ if (compressionFinder instanceof BigDecimalCompressionFinder) {
+ return getUncompressedValue(
--- End diff --
same instanceof here
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