Examples of java.nio.MappedByteBuffer.position()

java.nio.MappedByteBuffer.position()

        } 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);
        mapped = readWriteFileChannel.map(MapMode.READ_ONLY, 0, CONTENT
                .length());

View Full Code Here

        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());
        assertEquals(0, readWriteFileChannel.position());
    }

View Full Code Here

        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());
    }


    /**
     * @tests java.nio.channels.FileChannel#map(MapMode,long,long)
     */

View Full Code Here

        FileChannel ch = f.getChannel();
        MappedByteBuffer mbb = ch.map(MapMode.READ_WRITE, 0L, 100L);
        ch.close();


        mbb.putInt(1, 1);
        mbb.position(50);
        mbb.putInt(50);


        mbb.flip();
        mbb.get();
        assertEquals(1, mbb.getInt());

View Full Code Here


        mbb.flip();
        mbb.get();
        assertEquals(1, mbb.getInt());


        mbb.position(50);
        assertEquals(50, mbb.getInt());
    }
}

View Full Code Here

    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());
    }


    /**
     * @tests java.nio.channels.FileChannel#map(MapMode,long,long)
     */

View Full Code Here

        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);
        String expected = CONTENT.substring(0, 10) + "test"
                + CONTENT.substring(10 + "test".length());

View Full Code Here

            assertEquals("Incorrectly mapped file channel for " + sizes[i]
                    + " position (capacity)", CONTENT_LEN, mapped.capacity());
            assertEquals("Incorrectly mapped file channel for " + sizes[i]
                    + " position (limit)", CONTENT_LEN, mapped.limit());
            assertEquals("Incorrectly mapped file channel for " + sizes[i]
                    + " position (position)", 0, mapped.position());


            // map not change channel's position
            assertEquals(0, readOnlyFileChannel.position());


            // Close the file and the channel before the next iteration

View Full Code Here


        MappedByteBuffer b = raf.getChannel().map(FileChannel.MapMode.READ_WRITE, 0, (long) 3e6);


        System.out.println("length after mapping is " + raf.length());


        b.position((int) (3e6 - 10));
        b.put((byte) 1);


        b.force();


        System.out.println("length after writting to MappedByteBuffer is " + raf.length());

View Full Code Here

            b = f.map(FileChannel.MapMode.READ_WRITE, 0,newFileSize);
            buffers.put(f, b);
        }


        //write into buffer
        b.position(offsetInFile);
        data.rewind();
        b.put(data);
    }


    private void unmapBuffer(MappedByteBuffer b) {

View Full Code Here

0 1 2 3 4 5 6 7

TOP

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.