Example usage for org.apache.cassandra.utils ByteBufferUtil compare

Introduction

In this page you can find the example usage for org.apache.cassandra.utils ByteBufferUtil compare.

Prototype

@Inline
    public static int compare(ByteBuffer o1, byte[] o2) 

Source Link

Usage

From source file:com.fullcontact.cassandra.io.util.BufferedRandomAccessFileTest.java

License:Apache License

@Test
public void testReadBytes() throws IOException {
    final SequentialWriter w = createTempFile("brafReadBytes");

    byte[] data = new byte[RandomAccessReader.DEFAULT_BUFFER_SIZE + 10];

    for (int i = 0; i < data.length; i++) {
        data[i] = 'c';
    }/*from   ww w .  j av  a  2s.c  o m*/

    w.write(data);
    w.sync();

    final RandomAccessReader r = RandomAccessReader.open(w, fs);

    ByteBuffer content = r.readBytes((int) r.length());

    // after reading whole file we should be at EOF
    assertEquals(0, ByteBufferUtil.compare(content, data));
    assert r.bytesRemaining() == 0 && r.isEOF();

    r.seek(0);
    content = r.readBytes(10); // reading first 10 bytes
    assertEquals(ByteBufferUtil.compare(content, "cccccccccc".getBytes()), 0);
    assertEquals(r.bytesRemaining(), r.length() - content.limit());

    // trying to read more than file has right now
    expectEOF(new Callable<Object>() {
        public Object call() throws IOException {
            return r.readBytes((int) r.length() + 10);
        }
    });

    w.close();
    r.close();
}

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From source file:com.fullcontact.cassandra.io.util.BufferedRandomAccessFileTest.java

License:Apache License

@Test
public void testClose() throws IOException {
    final SequentialWriter w = createTempFile("brafClose");

    byte[] data = generateByteArray(RandomAccessReader.DEFAULT_BUFFER_SIZE + 20);

    w.write(data);/*from  w ww  . ja  va 2 s .co m*/
    w.close(); // will flush

    final RandomAccessReader r = RandomAccessReader.open(new Path(new File(w.getPath()).getPath()), fs);

    r.close(); // closing to test read after close

    expectException(new Callable<Object>() {
        public Object call() {
            return r.read();
        }
    }, AssertionError.class);

    expectException(new Callable<Object>() {
        public Object call() throws IOException {
            w.write(generateByteArray(1));
            return null;
        }
    }, ClosedChannelException.class);

    RandomAccessReader copy = RandomAccessReader.open(new Path(new File(r.getPath()).getPath()), fs);
    ByteBuffer contents = copy.readBytes((int) copy.length());

    assertEquals(contents.limit(), data.length);
    assertEquals(ByteBufferUtil.compare(contents, data), 0);
}

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From source file:com.fullcontact.cassandra.io.util.BufferedRandomAccessFileTest.java

License:Apache License

@Test
public void testReadOnly() throws IOException {
    SequentialWriter file = createTempFile("brafReadOnlyTest");

    byte[] data = new byte[20];
    for (int i = 0; i < data.length; i++)
        data[i] = 'c';

    file.write(data);// ww w .  j  ava  2  s.  c om
    file.sync(); // flushing file to the disk

    // read-only copy of the file, with fixed file length
    final RandomAccessReader copy = RandomAccessReader.open(new Path(file.getPath()), fs);

    copy.seek(copy.length());
    assertTrue(copy.bytesRemaining() == 0 && copy.isEOF());

    // can't seek past the end of the file for read-only files
    expectException(new Callable<Object>() {
        public Object call() {
            copy.seek(copy.length() + 1);
            return null;
        }
    }, IllegalArgumentException.class);

    // Any write() call should fail
    expectException(new Callable<Object>() {
        public Object call() throws IOException {
            copy.write(1);
            return null;
        }
    }, UnsupportedOperationException.class);

    expectException(new Callable<Object>() {
        public Object call() throws IOException {
            copy.write(new byte[1]);
            return null;
        }
    }, UnsupportedOperationException.class);

    expectException(new Callable<Object>() {
        public Object call() throws IOException {
            copy.write(new byte[3], 0, 2);
            return null;
        }
    }, UnsupportedOperationException.class);

    copy.seek(0);
    copy.skipBytes(5);

    assertEquals(copy.bytesRemaining(), 15);
    assertEquals(copy.getFilePointer(), 5);
    assertTrue(!copy.isEOF());

    copy.seek(0);
    ByteBuffer contents = copy.readBytes((int) copy.length());

    assertEquals(contents.limit(), copy.length());
    assertTrue(ByteBufferUtil.compare(contents, data) == 0);

    copy.seek(0);

    int count = 0;
    while (!copy.isEOF()) {
        assertEquals((byte) copy.read(), 'c');
        count++;
    }

    assertEquals(count, copy.length());

    copy.seek(0);
    byte[] content = new byte[10];
    copy.read(content);

    assertEquals(new String(content), "cccccccccc");

    file.close();
    copy.close();
}

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From source file:com.perpetumobile.bit.orm.cassandra.CliMain.java

License:Apache License

/**
 * Converts column value into byte[] according to validation class
 * @param columnName - column name to which value belongs
 * @param columnFamilyName - column family name
 * @param columnValue - actual column value
 * @return value in byte array representation
 *///from w  w  w  .  j  a va 2s  .  c o m
private ByteBuffer columnValueAsBytes(ByteBuffer columnName, String columnFamilyName, String columnValue) {
    CfDef columnFamilyDef = getCfDef(columnFamilyName);
    AbstractType<?> defaultValidator = getFormatType(columnFamilyDef.default_validation_class);

    for (ColumnDef columnDefinition : columnFamilyDef.getColumn_metadata()) {
        byte[] currentColumnName = columnDefinition.getName();

        if (ByteBufferUtil.compare(currentColumnName, columnName) == 0) {
            try {
                String validationClass = columnDefinition.getValidation_class();
                return getBytesAccordingToType(columnValue, getFormatType(validationClass));
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        }
    }

    return defaultValidator.fromString(columnValue);
}

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From source file:com.perpetumobile.bit.orm.cassandra.CliMain.java

License:Apache License

/**
 * Get specific ColumnDef in column family meta data by column name
 * @param columnFamily - CfDef record//  w  w  w  . j  a v a  2  s.  co m
 * @param columnName   - column name represented as byte[]
 * @return ColumnDef   - found column definition
 */
private ColumnDef getColumnDefByName(CfDef columnFamily, ByteBuffer columnName) {
    for (ColumnDef columnDef : columnFamily.getColumn_metadata()) {
        byte[] currName = columnDef.getName();

        if (ByteBufferUtil.compare(currName, columnName) == 0) {
            return columnDef;
        }
    }

    return null;
}

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