private static ColumnarRow toColumnarRow(RunLengthEncodedBlock rleBlock) { Block rleValue = rleBlock.getValue(); ColumnarRow columnarRow = toColumnarRow(rleValue); Block[] fields = new Block[columnarRow.getFieldCount()]; for (int i = 0; i < columnarRow.getFieldCount(); i++) { Block nullSuppressedField = columnarRow.getField(i); if (rleValue.isNull(0)) { // the rle value is a null row so, all null-suppressed fields should empty if (nullSuppressedField.getPositionCount() != 0) { throw new IllegalArgumentException("Invalid row block"); } fields[i] = nullSuppressedField; } else { fields[i] = new RunLengthEncodedBlock(nullSuppressedField, rleBlock.getPositionCount()); } } return new ColumnarRow(rleBlock, fields); }
ColumnarRow columnarRow = ColumnarRow.toColumnarRow(block); ImmutableList.Builder<Block> fields = ImmutableList.builder(); for (int index = 0; index < columnarRow.getFieldCount(); index++) { fields.add(columnarRow.getField(index));
@Override public Block apply(Block block) { ColumnarRow rowBlock = toColumnarRow(block); Block[] fields = new Block[coercers.length]; int[] ids = new int[rowBlock.getField(0).getPositionCount()]; for (int i = 0; i < coercers.length; i++) { if (coercers[i] != null) { fields[i] = coercers[i].apply(rowBlock.getField(i)); } else if (i < rowBlock.getFieldCount()) { fields[i] = rowBlock.getField(i); } else { fields[i] = new DictionaryBlock(nullBlocks[i], ids); } } boolean[] valueIsNull = new boolean[rowBlock.getPositionCount()]; for (int i = 0; i < rowBlock.getPositionCount(); i++) { valueIsNull[i] = rowBlock.isNull(i); } return RowBlock.fromFieldBlocks(valueIsNull.length, Optional.of(valueIsNull), fields); } }
private static ColumnarRow toColumnarRow(DictionaryBlock dictionaryBlock) { // build a mapping from the old dictionary to a new dictionary with nulls removed Block dictionary = dictionaryBlock.getDictionary(); int[] newDictionaryIndex = new int[dictionary.getPositionCount()]; int nextNewDictionaryIndex = 0; for (int position = 0; position < dictionary.getPositionCount(); position++) { if (!dictionary.isNull(position)) { newDictionaryIndex[position] = nextNewDictionaryIndex; nextNewDictionaryIndex++; } } // reindex the dictionary int[] dictionaryIds = new int[dictionaryBlock.getPositionCount()]; int nonNullPositionCount = 0; for (int position = 0; position < dictionaryBlock.getPositionCount(); position++) { if (!dictionaryBlock.isNull(position)) { int oldDictionaryId = dictionaryBlock.getId(position); dictionaryIds[nonNullPositionCount] = newDictionaryIndex[oldDictionaryId]; nonNullPositionCount++; } } ColumnarRow columnarRow = toColumnarRow(dictionaryBlock.getDictionary()); Block[] fields = new Block[columnarRow.getFieldCount()]; for (int i = 0; i < columnarRow.getFieldCount(); i++) { fields[i] = new DictionaryBlock(nonNullPositionCount, columnarRow.getField(i), dictionaryIds); } return new ColumnarRow(dictionaryBlock, fields); }
private static ColumnarRow toColumnarRow(RunLengthEncodedBlock rleBlock) { Block rleValue = rleBlock.getValue(); ColumnarRow columnarRow = toColumnarRow(rleValue); Block[] fields = new Block[columnarRow.getFieldCount()]; for (int i = 0; i < columnarRow.getFieldCount(); i++) { Block nullSuppressedField = columnarRow.getField(i); if (rleValue.isNull(0)) { // the rle value is a null row so, all null-suppressed fields should empty if (nullSuppressedField.getPositionCount() != 0) { throw new IllegalArgumentException("Invalid row block"); } fields[i] = nullSuppressedField; } else { fields[i] = new RunLengthEncodedBlock(nullSuppressedField, rleBlock.getPositionCount()); } } return new ColumnarRow(rleBlock, fields); }
ColumnarRow columnarRow = ColumnarRow.toColumnarRow(block); ImmutableList.Builder<Block> fields = ImmutableList.builder(); for (int index = 0; index < columnarRow.getFieldCount(); index++) { fields.add(columnarRow.getField(index));
private static ColumnarRow toColumnarRow(DictionaryBlock dictionaryBlock) { // build a mapping from the old dictionary to a new dictionary with nulls removed Block dictionary = dictionaryBlock.getDictionary(); int[] newDictionaryIndex = new int[dictionary.getPositionCount()]; int nextNewDictionaryIndex = 0; for (int position = 0; position < dictionary.getPositionCount(); position++) { if (!dictionary.isNull(position)) { newDictionaryIndex[position] = nextNewDictionaryIndex; nextNewDictionaryIndex++; } } // reindex the dictionary int[] dictionaryIds = new int[dictionaryBlock.getPositionCount()]; int nonNullPositionCount = 0; for (int position = 0; position < dictionaryBlock.getPositionCount(); position++) { if (!dictionaryBlock.isNull(position)) { int oldDictionaryId = dictionaryBlock.getId(position); dictionaryIds[nonNullPositionCount] = newDictionaryIndex[oldDictionaryId]; nonNullPositionCount++; } } ColumnarRow columnarRow = toColumnarRow(dictionaryBlock.getDictionary()); Block[] fields = new Block[columnarRow.getFieldCount()]; for (int i = 0; i < columnarRow.getFieldCount(); i++) { fields[i] = new DictionaryBlock(nonNullPositionCount, columnarRow.getField(i), dictionaryIds); } return new ColumnarRow(dictionaryBlock, fields); }