Examples of org.apache.lucene.store.IndexInput.seek()

Class org.apache.lucene.store.IndexInput

Examples of org.apache.lucene.store.IndexInput.seek()

org.apache.lucene.store.IndexInput.seek()
Sets current position in this file, where the next read will occur. @see #getFilePointer()

        byte ba1 = a1.readByte();
        assertEquals(be1, ba1);


        // Now seek the second pair
        e2.seek(1027);
        a2.seek(1027);
        assertEquals(1027, e2.getFilePointer());
        assertEquals(1027, a2.getFilePointer());
        byte be2 = e2.readByte();
        byte ba2 = a2.readByte();
        assertEquals(be2, ba2);

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        ba2 = a2.readByte();
        assertEquals(be2, ba2);


        // Move the second set back, again cross the buffer size
        e2.seek(17);
        a2.seek(17);
        assertEquals(17, e2.getFilePointer());
        assertEquals(17, a2.getFilePointer());
        be2 = e2.readByte();
        ba2 = a2.readByte();
        assertEquals(be2, ba2);

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        byte ba1 = a1.readByte();
        assertEquals(be1, ba1);


        // Now seek the second pair
        e2.seek(1027);
        a2.seek(1027);
        assertEquals(1027, e2.getFilePointer());
        assertEquals(1027, a2.getFilePointer());
        byte be2 = e2.readByte();
        byte ba2 = a2.readByte();
        assertEquals(be2, ba2);

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        ba2 = a2.readByte();
        assertEquals(be2, ba2);


        // Move the second set back, again cross the buffer size
        e2.seek(17);
        a2.seek(17);
        assertEquals(17, e2.getFilePointer());
        assertEquals(17, a2.getFilePointer());
        be2 = e2.readByte();
        ba2 = a2.readByte();
        assertEquals(be2, ba2);

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    public void testReadPastEOF() throws IOException {
        setUp_2();
        CompoundFileDirectory cr = new CompoundFileDirectory(dir, "f.comp", newIOContext(random()), false);
        IndexInput is = cr.openInput("f2", newIOContext(random()));
        is.seek(is.length() - 10);
        byte b[] = new byte[100];
        is.readBytes(b, 0, 10);


        try {
            is.readByte();

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        } catch (IOException e) {
            /* success */
            //System.out.println("SUCCESS: single byte read past end of file: " + e);
        }


        is.seek(is.length() - 10);
        try {
            is.readBytes(b, 0, 50);
            fail("Block read past end of file");
        } catch (IOException e) {
            /* success */

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        // ERROR: this call should fail, but succeeds because the buffer
        // is still filled
        in.readByte();


        // ERROR: this call should fail, but succeeds for some reason as well
        in.seek(1099);


        try {
            // OK: this call correctly fails. We are now past the 1024 internal
            // buffer, so an actual IO is attempted, which fails
            in.readByte();

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        // The following should really fail since we couldn't expect to
        // access a file once close has been called on it (regardless of
        // buffering and/or clone magic)
        expected.seek(0);
        two.seek(0);
        assertSameStreams("basic clone two/2", expected, two);




        // Now close the compound reader
        cr.close();

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         if (seekPoint == i) {
            byte expectedByte = bytesGenerator.nextByte();
            byte actualByte = indexInput.readByte();
            assert expectedByte == actualByte;
            seekPoint = indexInput.getFilePointer() + r.nextInt(10);
            indexInput.seek(seekPoint);
         } else {
            bytesGenerator.nextByte();
         }


      }

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         if (seekPoint == i) {
            byte expectedByte = bytesGenerator.nextByte();
            byte actualByte = indexInput.readByte();
            assert expectedByte == actualByte;
            seekPoint = indexInput.getFilePointer() + r.nextInt(10);
            indexInput.seek(seekPoint);
         } else {
            bytesGenerator.nextByte();
         }


      }

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