Examples with Cursor jetbrains.exodus.env.Cursor used on opensource projects

Example 51 with Cursor

use of jetbrains.exodus.env.Cursor in project xodus by JetBrains.

the class BTreeCursorDeleteTest method testDeleteCursorDuplicates3.

@Test
public void testDeleteCursorDuplicates3() throws IOException {
    tm = createMutableTree(true, 1).getMutableCopy();
    for (int i = 0; i < 32; ++i) {
        for (int j = 0; j < 32; ++j) {
            getTreeMutable().put(IntegerBinding.intToEntry(i), IntegerBinding.intToEntry(j));
        }
    }
    for (int i = 0; i < 32; ++i) {
        final Cursor cursor = getTreeMutable().openCursor();
        Assert.assertNotNull(cursor.getSearchKeyRange(IntegerBinding.intToEntry(i)));
        for (int j = 0; j < 31; ++j) {
            cursor.deleteCurrent();
            Assert.assertTrue(cursor.getNext());
        }
    }
}

Example 52 with Cursor

use of jetbrains.exodus.env.Cursor in project xodus by JetBrains.

the class BTreeCursorDeleteTest method testDeleteCursorDuplicates2.

@Test
public void testDeleteCursorDuplicates2() throws IOException {
    tm = createEmptyTreeForCursor(1).getMutableCopy();
    for (int i = 0; i < 8; i++) {
        getTreeMutable().put(kv(i, "v" + i));
        getTreeMutable().put(kv(i, "vv" + i));
    }
    Cursor c = getTreeMutable().openCursor();
    assertEquals(true, c.getSearchBoth(key(1), value("vv1")));
    assertTrue(c.deleteCurrent());
    assertFalse(c.deleteCurrent());
    assertTrue(c.getNext());
    assertEquals(true, c.getSearchBoth(key(7), value("vv7")));
    assertTrue(c.deleteCurrent());
    assertFalse(c.getNext());
}

Example 53 with Cursor

use of jetbrains.exodus.env.Cursor in project xodus by JetBrains.

the class BTreeCursorDeleteTest method testDeleteCursorNoDuplicates2.

@Test
public void testDeleteCursorNoDuplicates2() throws IOException {
    tm = createEmptyTreeForCursor(1).getMutableCopy();
    for (int i = 0; i < 8; i++) {
        getTreeMutable().put(kv(i, "v" + i));
    }
    Cursor c = tm.openCursor();
    assertTrue(c.getNext());
    assertEquals(key(0), c.getKey());
    assertTrue(c.deleteCurrent());
    assertFalse(c.deleteCurrent());
    assertTrue(c.getNext());
    assertEquals(key(1), c.getKey());
    assertEquals(value("v7"), c.getSearchKey(key(7)));
    assertTrue(c.deleteCurrent());
    assertFalse(c.deleteCurrent());
    assertFalse(c.getNext());
}

Example 54 with Cursor

use of jetbrains.exodus.env.Cursor in project xodus by JetBrains.

the class BTreeCursorDupConcurrentModificationTest method testConcurrentDeleteCurrent.

@Test
public void testConcurrentDeleteCurrent() {
    Cursor c = tm.openCursor();
    final ByteIterable value = value("v51");
    assertTrue(c.getSearchBoth(key(5), value));
    deleteImpl(key(5), value);
    assertTrue(c.getNext());
    assertEquals(key(5), c.getKey());
    assertEquals(value("v52"), c.getValue());
}

Example 55 with Cursor

use of jetbrains.exodus.env.Cursor in project xodus by JetBrains.

the class BTreeCursorDupConcurrentModificationTest method testConcurrentDeleteBefore1.

@Test
public void testConcurrentDeleteBefore1() {
    Cursor c = tm.openCursor();
    assertTrue(c.getSearchBoth(key(5), value("v51")));
    deleteImpl(key(1));
    assertTrue(c.getNext());
    assertEquals(key(5), c.getKey());
    assertEquals(value("v52"), c.getValue());
    assertTrue(c.getNext());
    assertEquals(key(6), c.getKey());
}