Example usage for org.apache.cassandra.io.util RandomAccessReader readFully

Introduction

In this page you can find the example usage for org.apache.cassandra.io.util RandomAccessReader readFully.

Prototype

@Override
    public void readFully(byte[] b, int off, int len) throws IOException 

Source Link

Usage

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

License:Apache License

@Test
public void testIsEOF() throws IOException {
    for (int bufferSize : Arrays.asList(1, 2, 3, 5, 8, 64)) // smaller, equal, bigger buffer sizes
    {// w w  w. ja v a  2s.  c o m
        final byte[] target = new byte[32];

        // single too-large read
        for (final int offset : Arrays.asList(0, 8)) {
            File file1 = writeTemporaryFile(new byte[16]);
            final RandomAccessReader file = RandomAccessReader.open(new Path(file1.getPath()), bufferSize,
                    false, null, fs);
            expectEOF(new Callable<Object>() {
                public Object call() throws IOException {
                    file.readFully(target, offset, 17);
                    return null;
                }
            });
        }

        // first read is ok but eventually EOFs
        for (final int n : Arrays.asList(1, 2, 4, 8)) {
            File file1 = writeTemporaryFile(new byte[16]);
            final RandomAccessReader file = RandomAccessReader.open(new Path(file1.getPath()), bufferSize,
                    false, null, fs);
            expectEOF(new Callable<Object>() {
                public Object call() throws IOException {
                    while (true)
                        file.readFully(target, 0, n);
                }
            });
        }
    }
}

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