Examples with ConcurrentNavigableMap java.util.concurrent.ConcurrentNavigableMap used on opensource projects

Example 81 with ConcurrentNavigableMap

use of java.util.concurrent.ConcurrentNavigableMap in project cdap by caskdata.

the class InMemoryTableService method swap.

public static synchronized boolean swap(String tableName, byte[] row, byte[] column, byte[] oldValue, byte[] newValue) {
    ConcurrentNavigableMap<byte[], NavigableMap<byte[], NavigableMap<Long, Update>>> table = tables.get(tableName);
    // get the correct row from the table, create it if it doesn't exist
    NavigableMap<byte[], NavigableMap<Long, Update>> rowMap = table.get(row);
    Update existingValue = null;
    if (rowMap != null) {
        NavigableMap<Long, Update> columnMap = rowMap.get(column);
        if (columnMap != null) {
            existingValue = columnMap.lastEntry().getValue();
        }
    }
    // verify existing value matches
    if (oldValue == null && existingValue != null) {
        return false;
    }
    if (oldValue != null && (existingValue == null || !Bytes.equals(oldValue, existingValue.getBytes()))) {
        return false;
    }
    // write new value
    if (newValue == null) {
        if (rowMap != null) {
            rowMap.remove(column);
        }
    } else {
        if (rowMap == null) {
            rowMap = Maps.newTreeMap(Bytes.BYTES_COMPARATOR);
            table.put(row, rowMap);
        }
        NavigableMap<Long, Update> columnMap = rowMap.get(column);
        if (columnMap == null) {
            columnMap = Maps.newTreeMap();
            rowMap.put(column, columnMap);
        }
        PutValue newPut = new PutValue(newValue);
        columnMap.put(System.currentTimeMillis(), newPut);
    }
    return true;
}

Example 82 with ConcurrentNavigableMap

use of java.util.concurrent.ConcurrentNavigableMap in project mapdb by jankotek.

the class ConcurrentSkipListSubMapTest method testGet.

/**
     * get returns the correct element at the given key,
     * or null if not present
     */
@Test
public void testGet() {
    ConcurrentNavigableMap map = map5();
    assertEquals("A", (String) map.get(one));
    ConcurrentNavigableMap empty = map0();
    assertNull(empty.get(one));
}

Example 83 with ConcurrentNavigableMap

use of java.util.concurrent.ConcurrentNavigableMap in project mapdb by jankotek.

the class ConcurrentSkipListSubMapTest method testLastKey.

/**
     * lastKey returns last key
     */
@Test
public void testLastKey() {
    ConcurrentNavigableMap map = map5();
    assertEquals(five, map.lastKey());
}

Example 84 with ConcurrentNavigableMap

use of java.util.concurrent.ConcurrentNavigableMap in project mapdb by jankotek.

the class ConcurrentSkipListSubMapTest method testReplaceValue2.

/**
     * replace value succeeds when the given key mapped to expected value
     */
@Test
public void testReplaceValue2() {
    if (isReadOnly())
        return;
    ConcurrentNavigableMap map = map5();
    assertEquals("A", map.get(one));
    assertTrue(map.replace(one, "A", "Z"));
    assertEquals("Z", map.get(one));
}

Example 85 with ConcurrentNavigableMap

use of java.util.concurrent.ConcurrentNavigableMap in project mapdb by jankotek.

the class ConcurrentSkipListSubMapTest method testDescendingFloorEntry.

/**
     * floorEntry returns preceding entry.
     */
@Test
public void testDescendingFloorEntry() {
    ConcurrentNavigableMap map = dmap5();
    Map.Entry e1 = map.floorEntry(m3);
    assertEquals(m3, e1.getKey());
    Map.Entry e2 = map.floorEntry(m6);
    assertEquals(m5, e2.getKey());
    Map.Entry e3 = map.floorEntry(m1);
    assertEquals(m1, e3.getKey());
    Map.Entry e4 = map.floorEntry(zero);
    assertNull(e4);
}