java.util.TreeMap#lowerKey ( )源码实例Demo

下面列出了java.util.TreeMap#lowerKey ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。

源代码1 项目： openjdk-jdk9 文件： TreeMapTest.java

/**
 * lowerKey returns preceding element
 */
public void testLowerKey() {
    TreeMap q = map5();
    Object e1 = q.lowerKey(three);
    assertEquals(two, e1);

    Object e2 = q.lowerKey(six);
    assertEquals(five, e2);

    Object e3 = q.lowerKey(one);
    assertNull(e3);

    Object e4 = q.lowerKey(zero);
    assertNull(e4);
}

源代码2 项目： j2objc 文件： TreeMapTest.java

/**
 * lowerKey returns preceding element
 */
public void testLowerKey() {
    TreeMap q = map5();
    Object e1 = q.lowerKey(three);
    assertEquals(two, e1);

    Object e2 = q.lowerKey(six);
    assertEquals(five, e2);

    Object e3 = q.lowerKey(one);
    assertNull(e3);

    Object e4 = q.lowerKey(zero);
    assertNull(e4);
}

源代码3 项目： siddhi 文件： IndexEventHolder.java

@Override
public boolean containsEventSet(String attribute, Compare.Operator operator, Object value) {
    if (primaryKeyData != null && attribute.equals(primaryKeyAttributes)) {
        switch (operator) {
            case LESS_THAN:
                return ((TreeMap<Object, StreamEvent>) primaryKeyData).lowerKey(value) != null;
            case GREATER_THAN:
                return ((TreeMap<Object, StreamEvent>) primaryKeyData).higherKey(value) != null;
            case LESS_THAN_EQUAL:
                return ((TreeMap<Object, StreamEvent>) primaryKeyData).ceilingKey(value) != null;
            case GREATER_THAN_EQUAL:
                return ((TreeMap<Object, StreamEvent>) primaryKeyData).floorKey(value) != null;
            case EQUAL:
                return primaryKeyData.get(value) != null;
            case NOT_EQUAL:
                return primaryKeyData.size() > 1;
        }
    } else {
        TreeMap<Object, Set<StreamEvent>> currentIndexedData = indexData.get(attribute);

        switch (operator) {

            case LESS_THAN:
                return currentIndexedData.lowerKey(value) != null;
            case GREATER_THAN:
                return currentIndexedData.higherKey(value) != null;
            case LESS_THAN_EQUAL:
                return currentIndexedData.ceilingKey(value) != null;
            case GREATER_THAN_EQUAL:
                return currentIndexedData.floorKey(value) != null;
            case EQUAL:
                return currentIndexedData.get(value) != null;
            case NOT_EQUAL:
                return currentIndexedData.size() > 1;
        }
    }
    throw new OperationNotSupportedException(operator + " not supported for '" + value + "' by " + getClass()
            .getName());
}

源代码4 项目： siddhi 文件： IndexEventHolderForCache.java

@Override
public boolean containsEventSet(String attribute, Compare.Operator operator, Object value) {
    if (primaryKeyData != null && attribute.equals(primaryKeyAttributes)) {
        StreamEvent foundEvent;
        switch (operator) {
            case LESS_THAN:
                foundEvent = (StreamEvent) ((TreeMap<Object, StreamEvent>) primaryKeyData).
                        lowerKey(value);
                if (foundEvent != null) {
                    handleCachePolicyAttributeUpdate(foundEvent);
                    return true;
                } else {
                    return false;
                }
            case GREATER_THAN:
                foundEvent = (StreamEvent) ((TreeMap<Object, StreamEvent>) primaryKeyData).
                        higherKey(value);
                if (foundEvent != null) {
                    handleCachePolicyAttributeUpdate(foundEvent);
                    return true;
                } else {
                    return false;
                }
            case LESS_THAN_EQUAL:
                foundEvent = (StreamEvent) ((TreeMap<Object, StreamEvent>) primaryKeyData).
                        ceilingKey(value);
                if (foundEvent != null) {
                    handleCachePolicyAttributeUpdate(foundEvent);
                    return true;
                } else {
                    return false;
                }
            case GREATER_THAN_EQUAL:
                foundEvent = (StreamEvent) ((TreeMap<Object, StreamEvent>) primaryKeyData).
                        floorKey(value);
                if (foundEvent != null) {
                    handleCachePolicyAttributeUpdate(foundEvent);
                    return true;
                } else {
                    return false;
                }
            case EQUAL:
                foundEvent = primaryKeyData.get(value);
                if (foundEvent != null) {
                    handleCachePolicyAttributeUpdate(foundEvent);
                    return true;
                } else {
                    return false;
                }
            case NOT_EQUAL:
                return primaryKeyData.size() > 1;
        }
    } else {
        TreeMap<Object, Set<StreamEvent>> currentIndexedData = indexData.get(attribute);

        switch (operator) {

            case LESS_THAN:
                return currentIndexedData.lowerKey(value) != null;
            case GREATER_THAN:
                return currentIndexedData.higherKey(value) != null;
            case LESS_THAN_EQUAL:
                return currentIndexedData.ceilingKey(value) != null;
            case GREATER_THAN_EQUAL:
                return currentIndexedData.floorKey(value) != null;
            case EQUAL:
                return currentIndexedData.get(value) != null;
            case NOT_EQUAL:
                return currentIndexedData.size() > 1;
        }
    }
    throw new OperationNotSupportedException(operator + " not supported for '" + value + "' by " + getClass()
            .getName());
}