Examples with PageCursor org.neo4j.io.pagecache.PageCursor used on opensource projects

Example 6 with PageCursor

use of org.neo4j.io.pagecache.PageCursor in project neo4j by neo4j.

the class CompositePageCursorTest method retryMustClearTheOutOfBoundsFlags.

@Test
public void retryMustClearTheOutOfBoundsFlags() throws Exception {
    PageCursor pageCursor = CompositePageCursor.compose(first, PAGE_SIZE, second, PAGE_SIZE);
    first.raiseOutOfBounds();
    second.raiseOutOfBounds();
    pageCursor.raiseOutOfBounds();
    first.setNeedsRetry(true);
    pageCursor.shouldRetry();
    assertFalse(first.checkAndClearBoundsFlag());
    assertFalse(second.checkAndClearBoundsFlag());
    assertFalse(pageCursor.checkAndClearBoundsFlag());
}

Example 7 with PageCursor

use of org.neo4j.io.pagecache.PageCursor in project neo4j by neo4j.

the class CompositePageCursorTest method getShortMustHitFirstCursorBeforeFlip.

@Test
public void getShortMustHitFirstCursorBeforeFlip() throws Exception {
    PageCursor c = CompositePageCursor.compose(first, 2, second, 2);
    assertThat(c.getShort(), is((short) 0xA0A1));
    assertFalse(c.checkAndClearBoundsFlag());
}

Example 8 with PageCursor

use of org.neo4j.io.pagecache.PageCursor in project neo4j by neo4j.

the class CompositePageCursorTest method getShortWithOffsetMustHitCorrectCursors.

@Test
public void getShortWithOffsetMustHitCorrectCursors() throws Exception {
    first.setOffset(1);
    second.setOffset(2);
    PageCursor c = CompositePageCursor.compose(first, 1 + 2, second, 2);
    assertThat(c.getShort(1), is((short) 0xA2A3));
    assertThat(c.getShort(1 + 2), is((short) 0xB2B3));
    assertFalse(c.checkAndClearBoundsFlag());
}

Example 9 with PageCursor

use of org.neo4j.io.pagecache.PageCursor in project neo4j by neo4j.

the class CompositePageCursorTest method nextWithPageIdIsNotSupportedOperation.

@Test(expected = UnsupportedOperationException.class)
public void nextWithPageIdIsNotSupportedOperation() throws Exception {
    PageCursor pageCursor = CompositePageCursor.compose(first, PAGE_SIZE, second, PAGE_SIZE);
    pageCursor.next(12);
}

Example 10 with PageCursor

use of org.neo4j.io.pagecache.PageCursor in project neo4j by neo4j.

the class CompositePageCursorTest method getBytesMustHitSecondCursorAfterFlip.

@Test
public void getBytesMustHitSecondCursorAfterFlip() throws Exception {
    PageCursor c = CompositePageCursor.compose(first, 4, second, 4);
    c.getBytes(bytes);
    assertThat(bytes, byteArray(0xA0, 0xA1, 0xA2, 0xA3));
    c.getBytes(bytes);
    assertThat(bytes, byteArray(0xB0, 0xB1, 0xB2, 0xB3));
    assertFalse(c.checkAndClearBoundsFlag());
}