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

Example 46 with PageCursor

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

the class CompositePageCursorTest method putByteArrayBeyondEndOfViewMustRaiseBoundsFlag.

@Test
public void putByteArrayBeyondEndOfViewMustRaiseBoundsFlag() throws Exception {
    PageCursor pageCursor = CompositePageCursor.compose(first, PAGE_SIZE, second, PAGE_SIZE);
    for (int i = 0; i < 3 * PAGE_SIZE; i++) {
        pageCursor.putBytes(bytes);
    }
    assertTrue(pageCursor.checkAndClearBoundsFlag());
    assertFalse(pageCursor.checkAndClearBoundsFlag());
}

Example 47 with PageCursor

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

the class CompositePageCursorTest method getIntOffsettedBeyondEndOfViewMustRaiseBoundsFlag.

@Test
public void getIntOffsettedBeyondEndOfViewMustRaiseBoundsFlag() throws Exception {
    PageCursor pageCursor = CompositePageCursor.compose(first, PAGE_SIZE, second, PAGE_SIZE);
    for (int i = 0; i < 3 * PAGE_SIZE; i++) {
        pageCursor.getInt(i);
    }
    assertTrue(pageCursor.checkAndClearBoundsFlag());
    assertFalse(pageCursor.checkAndClearBoundsFlag());
}

Example 48 with PageCursor

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

the class CompositePageCursorTest method getLongBeyondEndOfViewMustRaiseBoundsFlag.

@Test
public void getLongBeyondEndOfViewMustRaiseBoundsFlag() throws Exception {
    PageCursor pageCursor = CompositePageCursor.compose(first, PAGE_SIZE, second, PAGE_SIZE);
    for (int i = 0; i < 3 * PAGE_SIZE; i++) {
        pageCursor.getLong();
    }
    assertTrue(pageCursor.checkAndClearBoundsFlag());
    assertFalse(pageCursor.checkAndClearBoundsFlag());
}

Example 49 with PageCursor

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

the class CompositePageCursorTest method retryShouldCheckAndResetBothCursors.

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

Example 50 with PageCursor

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

the class CompositePageCursorTest method putBytesMustHitFirstCursorBeforeFlip.

@Test
public void putBytesMustHitFirstCursorBeforeFlip() throws Exception {
    PageCursor c = CompositePageCursor.compose(first, 4, second, 4);
    c.putBytes(new byte[] { 1, 2, 3, 4 });
    c.setOffset(0);
    c.getBytes(bytes);
    assertThat(bytes, byteArray(1, 2, 3, 4));
    assertFalse(c.checkAndClearBoundsFlag());
}