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

Example 11 with PageCursor

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

the class CompositePageCursorTest method pageIdEqualSecondCursorPageIdAfterFlip.

@Test
public void pageIdEqualSecondCursorPageIdAfterFlip() throws Exception {
    PageCursor pageCursor = CompositePageCursor.compose(first, PAGE_SIZE, second, PAGE_SIZE);
    assertNotEquals(second.getCurrentPageId(), pageCursor.getCurrentPageId());
    pageCursor.getLong();
    assertNotEquals(second.getCurrentPageId(), pageCursor.getCurrentPageId());
    pageCursor.getLong();
    assertEquals(second.getCurrentPageId(), pageCursor.getCurrentPageId());
}

Example 12 with PageCursor

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

the class CompositePageCursorTest method putLongOffsettedBeforeFirstPageMustRaiseBoundsFlag.

@Test
public void putLongOffsettedBeforeFirstPageMustRaiseBoundsFlag() throws Exception {
    PageCursor pageCursor = CompositePageCursor.compose(first, PAGE_SIZE, second, PAGE_SIZE);
    pageCursor.putLong(-1, (long) 1);
    assertTrue(pageCursor.checkAndClearBoundsFlag());
    assertFalse(pageCursor.checkAndClearBoundsFlag());
}

Example 13 with PageCursor

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

the class CompositePageCursorTest method getByteMustRespectOffsetIntoSecondCursor.

@Test
public void getByteMustRespectOffsetIntoSecondCursor() throws Exception {
    second.setOffset(1);
    PageCursor c = CompositePageCursor.compose(first, 1, second, 1);
    assertThat(c.getByte(), is((byte) 0xA0));
    assertThat(c.getByte(), is((byte) 0xB1));
    assertFalse(c.checkAndClearBoundsFlag());
}

Example 14 with PageCursor

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

the class CompositePageCursorTest method putShortWithOffsetMustHitCorrectCursors.

@Test
public void putShortWithOffsetMustHitCorrectCursors() throws Exception {
    first.setOffset(1);
    second.setOffset(2);
    PageCursor c = CompositePageCursor.compose(first, 2 * 2, second, 2 * 2);
    c.putShort(2, (short) 1);
    c.putShort(2 + 2, (short) 2);
    assertThat(c.getShort(), is((short) 0xA1A2));
    assertThat(c.getShort(), is((short) 1));
    assertThat(c.getShort(), is((short) 2));
    assertThat(c.getShort(), is((short) 0xB4B5));
    assertFalse(c.checkAndClearBoundsFlag());
}

Example 15 with PageCursor

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

the class CompositePageCursorTest method nextIsNotSupportedOperation.

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