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

Example 11 with PageSwapper

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

the class SingleFilePageSwapperTest method swappingInMustFillPageWithData.

@Test
public void swappingInMustFillPageWithData() throws Exception {
    byte[] bytes = new byte[] { 1, 2, 3, 4 };
    StoreChannel channel = getFs().create(getFile());
    channel.writeAll(wrap(bytes));
    channel.close();
    PageSwapperFactory factory = createSwapperFactory();
    PageSwapper swapper = createSwapper(factory, getFile(), 4, null, false);
    ByteBuffer target = ByteBuffer.allocateDirect(4);
    ByteBufferPage page = new ByteBufferPage(target);
    swapper.read(0, page);
    assertThat(array(target), byteArray(bytes));
}