Package java.nio

Examples of java.nio.MappedByteBuffer.limit()

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        {
            segBuffer = segments.get(seg);
        }
       
        segBuffer.position(segOff);
        segBuffer.limit(segOff + blockSize);
       
        ByteBuffer toReturn = segBuffer.slice();
       
        segBuffer.limit(segBuffer.capacity());
       
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        segBuffer.position(segOff);
        segBuffer.limit(segOff + blockSize);
       
        ByteBuffer toReturn = segBuffer.slice();
       
        segBuffer.limit(segBuffer.capacity());
       
        return toReturn;
    }
   
    @Override
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        assertEquals(0, readWriteFileChannel.size());
        MappedByteBuffer mapped = readWriteFileChannel.map(MapMode.READ_ONLY,
                0, CONTENT_LENGTH);
        assertEquals(CONTENT_LENGTH, readWriteFileChannel.size());
        readOnlyFileChannel.close();
        assertEquals(CONTENT_LENGTH, mapped.limit());
    }

    /**
     * @tests java.nio.channels.FileChannel#map(MapMode,long,long)
     */
 
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    public void test_map_Private_CloseChannel() throws IOException {
        MappedByteBuffer mapped = readWriteFileChannel.map(MapMode.PRIVATE, 0,
                CONTENT_LENGTH);
        readWriteFileChannel.close();
        mapped.put(TEST_BYTES);
        assertEquals(CONTENT_LENGTH, mapped.limit());
        assertEquals("test".length(), mapped.position());
    }

    /**
     * @tests java.nio.channels.FileChannel#map(MapMode,long,long)
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            mapped.put(TEST_BYTES);
            fail("should throw ReadOnlyBufferException.");
        } catch (ReadOnlyBufferException ex) {
            // expected;
        }
        assertEquals(CONTENT_LENGTH, mapped.limit());
        assertEquals(CONTENT_LENGTH, mapped.capacity());
        assertEquals(0, mapped.position());

        // try to get a readonly map from read/write channel
        writeDataToFile(fileOfReadWriteFileChannel);
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        // try to get a readonly map from read/write channel
        writeDataToFile(fileOfReadWriteFileChannel);
        mapped = readWriteFileChannel.map(MapMode.READ_ONLY, 0, CONTENT
                .length());
        assertEquals(CONTENT_LENGTH, mapped.limit());
        assertEquals(CONTENT_LENGTH, mapped.capacity());
        assertEquals(0, mapped.position());

        // map not change channel's position
        assertEquals(0, readOnlyFileChannel.position());
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     */
    public void test_map_ReadOnly_NonZeroPosition() throws IOException {
        this.writeDataToFile(fileOfReadOnlyFileChannel);
        MappedByteBuffer mapped = readOnlyFileChannel.map(MapMode.READ_ONLY,
                10, CONTENT_LENGTH - 10);
        assertEquals(CONTENT_LENGTH - 10, mapped.limit());
        assertEquals(CONTENT_LENGTH - 10, mapped.capacity());
        assertEquals(0, mapped.position());
    }

    /**
 
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     */
    public void test_map_Private() throws IOException {
        this.writeDataToFile(fileOfReadWriteFileChannel);
        MappedByteBuffer mapped = readWriteFileChannel.map(MapMode.PRIVATE, 0,
                CONTENT_LENGTH);
        assertEquals(CONTENT_LENGTH, mapped.limit());
        // test copy on write if private
        ByteBuffer returnByPut = mapped.put(TEST_BYTES);
        assertSame(returnByPut, mapped);
        ByteBuffer checkBuffer = ByteBuffer.allocate(CONTENT_LENGTH);
        mapped.force();
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     * @tests java.nio.channels.FileChannel#map(MapMode,long,long)
     */
    public void test_map_Private_NonZeroPosition() throws IOException {
        MappedByteBuffer mapped = readWriteFileChannel.map(MapMode.PRIVATE, 10,
                CONTENT_LENGTH - 10);
        assertEquals(CONTENT_LENGTH - 10, mapped.limit());
        assertEquals(CONTENT_LENGTH - 10, mapped.capacity());
        assertEquals(0, mapped.position());
    }

    /**
 
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    public void test_map_ReadWrite_NonZeroPosition() throws IOException {
        // test position non-zero
        writeDataToFile(fileOfReadWriteFileChannel);
        MappedByteBuffer mapped = readWriteFileChannel.map(MapMode.READ_WRITE,
                10, CONTENT_LENGTH - 10);
        assertEquals(CONTENT_LENGTH - 10, mapped.limit());
        assertEquals(CONTENT.length() - 10, mapped.capacity());
        assertEquals(0, mapped.position());
        mapped.put(TEST_BYTES);
        ByteBuffer checkBuffer = ByteBuffer.allocate(CONTENT_LENGTH);
        readWriteFileChannel.read(checkBuffer);
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