Package com.facebook.presto.spi.block

Examples of com.facebook.presto.spi.block.BlockEncoding.readBlock()

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        RunLengthEncodedBlock rleBlock = (RunLengthEncodedBlock) block;
        assertTrue(rleBlock.equalTo(0, expectedBlock, 0));
        assertEquals(rleBlock.getPositionCount(), 2);
        assertEquals(rleBlock.getSlice(0).toStringUtf8(), "alice");

        block = blockEncoding.readBlock(sliceInput);
        assertInstanceOf(block, RunLengthEncodedBlock.class);
        rleBlock = (RunLengthEncodedBlock) block;
        assertTrue(rleBlock.equalTo(0, expectedBlock, 2));
        assertEquals(rleBlock.getPositionCount(), 4);
        assertEquals(rleBlock.getSlice(0).toStringUtf8(), "bob");
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        rleBlock = (RunLengthEncodedBlock) block;
        assertTrue(rleBlock.equalTo(0, expectedBlock, 2));
        assertEquals(rleBlock.getPositionCount(), 4);
        assertEquals(rleBlock.getSlice(0).toStringUtf8(), "bob");

        block = blockEncoding.readBlock(sliceInput);
        assertInstanceOf(block, RunLengthEncodedBlock.class);
        rleBlock = (RunLengthEncodedBlock) block;
        assertTrue(rleBlock.equalTo(0, expectedBlock, 6));
        assertEquals(rleBlock.getPositionCount(), 6);
        assertEquals(rleBlock.getSlice(0).toStringUtf8(), "charlie");
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        DynamicSliceOutput compressedOutput = new DynamicSliceOutput(1024);
        Encoder encoder = BlocksFileEncoding.SNAPPY.createBlocksWriter(compressedOutput);

        encoder.append(block);
        BlockEncoding snappyEncoding = encoder.finish();
        Block actualBlock = snappyEncoding.readBlock(compressedOutput.slice().getInput());
        BlockAssertions.assertBlockEquals(actualBlock, block);
    }

    @Test
    public void testLotsOfStuff()
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        Block expectedBlock = expectedBlockBuilder.build();

        BlockEncoding snappyEncoding = encoder.finish();
        assertTrue(encoderOutput.size() < expectedBlock.getSizeInBytes());

        Block actualBlock = snappyEncoding.readBlock(encoderOutput.slice().getInput());

        BlockAssertions.assertBlockEquals(actualBlock, expectedBlock);
    }
}
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        @Override
        public DictionaryBlockEncoding readEncoding(TypeManager manager, BlockEncodingSerde serde, SliceInput input)
        {
            // read the dictionary
            BlockEncoding dictionaryEncoding = serde.readBlockEncoding(input);
            Block dictionary = dictionaryEncoding.readBlock(input);

            // read the id block encoding
            BlockEncoding idBlockEncoding = serde.readBlockEncoding(input);
            return new DictionaryBlockEncoding(dictionary, idBlockEncoding);
        }
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        Block block = createTestBlock();

        DynamicSliceOutput sliceOutput = new DynamicSliceOutput(1024);
        BlockEncoding blockEncoding = block.getEncoding();
        blockEncoding.writeBlock(sliceOutput, block);
        Block actualBlock = blockEncoding.readBlock(sliceOutput.slice().getInput());
        BlockAssertions.assertBlockEquals(actualBlock, block);
    }

    protected void assertPositionEquals(Block block, int position, Object value)
    {
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