Examples with SCOListIterator org.datanucleus.store.types.SCOListIterator used on opensource projects

Example 1 with SCOListIterator

use of org.datanucleus.store.types.SCOListIterator in project datanucleus-core by datanucleus.

the class SCOListIteratorTest method testIteratorNextPrevious.

/**
 * Test of next/previous behaviour.
 */
public void testIteratorNextPrevious() {
    LinkedList<String> list = new LinkedList<String>();
    list.add("First");
    list.add("Second");
    list.add("Third");
    List<String> sco = new ArrayList<String>();
    sco.addAll(list);
    SCOListIterator iter = new SCOListIterator(sco, null, list, null, true, 0);
    assertTrue("hasNext returns false!", iter.hasNext());
    try {
        iter.set("Fifth");
        fail("set() before next()/previous() succeeded but should fail");
    } catch (IllegalStateException ise) {
    // Expected
    }
    assertTrue("hasNext returns false!", iter.hasNext());
    Object obj = iter.next();
    assertEquals("First", obj);
    // Test use of set() now that next() has been called.
    // Set the first element
    iter.set("Fifth");
    assertTrue("hasNext returns false!", iter.hasNext());
    obj = iter.next();
    assertEquals("Second", obj);
    assertTrue("hasNext returns false!", iter.hasNext());
    obj = iter.next();
    assertEquals("Third", obj);
    assertFalse("hasNext returns true!", iter.hasNext());
    try {
        iter.next();
        fail("call to next() succeeded but is already at end of list");
    } catch (NoSuchElementException nsee) {
    // Expected
    }
}

Example 2 with SCOListIterator

use of org.datanucleus.store.types.SCOListIterator in project datanucleus-core by datanucleus.

the class SCOListIteratorTest method testIteratorAddRemoveSet.

/**
 * Test of add/remove/set behaviour.
 */
public void testIteratorAddRemoveSet() {
    LinkedList<String> list = new LinkedList<String>();
    list.add("First");
    List<String> sco = new ArrayList<String>();
    sco.addAll(list);
    SCOListIterator iter = new SCOListIterator(sco, null, list, null, true, 0);
    try {
        iter.remove();
        fail("remove() before next()/previous() succeeded but should fail");
    } catch (IllegalStateException ise) {
    // Expected
    }
    try {
        iter.set("BAD");
        fail("set() before next()/previous() succeeded but should fail");
    } catch (IllegalStateException ise) {
    // Expected
    }
    iter.next();
    iter.set("Second");
    assertEquals("Second", iter.previous());
    assertEquals("Second", iter.next());
    iter.remove();
    iter.add("Third");
    iter.add("Fourth");
    assertEquals("Fourth", iter.previous());
    assertEquals("Fourth", iter.next());
    iter.remove();
    try {
        iter.remove();
        fail("remove() after remove() succeeded but should fail");
    } catch (IllegalStateException ise) {
        // Expected
        assertEquals(1, sco.size());
    }
    try {
        iter.set("BAD");
        fail("set() after remove() succeeded but should fail");
    } catch (IllegalStateException ise) {
    // Expected
    }
    iter.add("Fifth");
    try {
        iter.remove();
        fail("remove() after add() succeeded but should fail");
    } catch (IllegalStateException ise) {
    // Expected
    }
    try {
        iter.set("BAD");
        fail("set() after add() succeeded but should fail");
    } catch (IllegalStateException ise) {
    // Expected
    }
    iter.previous();
    iter.remove();
    iter.add("Sixth");
    iter.previous();
    iter.set("Seventh");
    assertEquals("Seventh", iter.next());
    assertEquals("Seventh", iter.previous());
    iter.remove();
    iter.previous();
    iter.remove();
    assertTrue(sco.isEmpty());
}

Example 3 with SCOListIterator

use of org.datanucleus.store.types.SCOListIterator in project datanucleus-core by datanucleus.

the class SCOListIteratorTest method testIteratorNextPreviousStartNegative.

/**
 * Test of next/previous behaviour with an iterator starting at -1.
 */
public void testIteratorNextPreviousStartNegative() {
    LinkedList<String> list = new LinkedList<String>();
    list.add("First");
    list.add("Second");
    list.add("Third");
    List<String> sco = new ArrayList<String>();
    sco.addAll(list);
    SCOListIterator iter = new SCOListIterator(sco, null, list, null, true, -1);
    assertTrue("hasNext returns false!", iter.hasNext());
    try {
        iter.set("Fifth");
        fail("set() before next()/previous() succeeded but should fail");
    } catch (IllegalStateException ise) {
    // Expected
    }
    assertTrue("hasNext returns false!", iter.hasNext());
    Object obj = iter.next();
    assertEquals("First", obj);
    // Test use of set() now that next() has been called.
    // Set the first element
    iter.set("Fifth");
    assertTrue("hasNext returns false!", iter.hasNext());
    obj = iter.next();
    assertEquals("Second", obj);
    assertTrue("hasNext returns false!", iter.hasNext());
    obj = iter.next();
    assertEquals("Third", obj);
    assertFalse("hasNext returns true!", iter.hasNext());
    try {
        iter.next();
        fail("call to next() succeeded but is already at end of list");
    } catch (NoSuchElementException nsee) {
    // Expected
    }
}