Java U.safeAbs方法代码示例

import org.apache.ignite.internal.util.typedef.internal.U; //导入方法依赖的package包/类
/** {@inheritDoc} */
@Override public int partition(Object key) {
    Integer regionId;

    if (key instanceof RegionKey)
        regionId = ((RegionKey)key).regionId;
    else if (key instanceof BinaryObject) {
        BinaryObject bo = (BinaryObject)key;

        regionId = bo.field("regionId");
    }
    else
        throw new IgniteException("Unsupported key for region aware affinity");

    List<Integer> range = REGION_TO_PART_MAP.get(regionId);

    Integer cnt = range.get(1);

    return U.safeAbs(key.hashCode() % cnt) + range.get(0); // Assign partition in region's range.
}
 

import org.apache.ignite.internal.util.typedef.internal.U; //导入方法依赖的package包/类
/**
 * @param pageId Page ID.
 * @return Segment index.
 */
public static int segmentIndex(int grpId, long pageId, int segments) {
    pageId = PageIdUtils.effectivePageId(pageId);

    // Take a prime number larger than total number of partitions.
    int hash = U.hash(pageId * 65537 + grpId);

    return U.safeAbs(hash) % segments;
}
 

import org.apache.ignite.internal.util.typedef.internal.U; //导入方法依赖的package包/类
/** {@inheritDoc} */
@Override public int partition(Object key) {
    if (key == null)
        throw new IllegalArgumentException("Null key is passed for a partition calculation. " +
            "Make sure that an affinity key that is used is initialized properly.");

    if (mask >= 0) {
        int h;

        return ((h = key.hashCode()) ^ (h >>> 16)) & mask;
    }

    return U.safeAbs(key.hashCode() % parts);
}
 

import org.apache.ignite.internal.util.typedef.internal.U; //导入方法依赖的package包/类
/** {@inheritDoc} */
@Override public int partition(Object key) {
    if (key instanceof Number)
        return ((Number)key).intValue() % 2;

    return key == null ? 0 : U.safeAbs(key.hashCode() % 2);
}
 

import org.apache.ignite.internal.util.typedef.internal.U; //导入方法依赖的package包/类
/** {@inheritDoc} */
@Override public int partition(Object key) {
    if (key instanceof Number)
        return ((Number)key).intValue() % parts;

    return key == null ? 0 : U.safeAbs(key.hashCode() % parts);
}
 

import org.apache.ignite.internal.util.typedef.internal.U; //导入方法依赖的package包/类
/** {@inheritDoc} */
@Override public int partition(Object key) {
    if (key == null)
        throw new IllegalArgumentException("Null key is passed for a partition calculation. " +
            "Make sure that an affinity key that is used is initialized properly.");

    return U.safeAbs(key.hashCode() % parts);
}
 

import org.apache.ignite.internal.util.typedef.internal.U; //导入方法依赖的package包/类
/**
 * @param ver Version.
 * @return Index.
 */
private int dhtAtomicUpdateIndex(GridCacheVersion ver) {
    return U.safeAbs(ver.hashCode()) % dhtAtomicUpdCnt.length();
}
 

import org.apache.ignite.internal.util.typedef.internal.U; //导入方法依赖的package包/类
/**
 * Returns {@link Lock} object for the given key.
 * @param key Key.
 * @return Lock.
 */
public Lock getLock(int key) {
    return locks[U.safeAbs(key) % locks.length];
}
 

import org.apache.ignite.internal.util.typedef.internal.U; //导入方法依赖的package包/类
/**
 * Returns index of lock object corresponding to the stripe of this lock address.
 *
 * @param lock Lock address.
 * @return Lock monitor object that corresponds to the stripe for this lock address.
 */
private int lockIndex(long lock) {
    return U.safeAbs(U.hash(lock)) & monitorsMask;
}
 

import org.apache.ignite.internal.util.typedef.internal.U; //导入方法依赖的package包/类
/**
 * Returns {@link Lock} object for the given key.
 * @param key Key.
 * @return Lock.
 */
public ReadWriteLock getLock(int key) {
    return locks[U.safeAbs(key) % locks.length];
}
 

import org.apache.ignite.internal.util.typedef.internal.U; //导入方法依赖的package包/类
/**
 * @param mapper IGFS blocks mapper.
 * @param fileId IGFS file ID.
 * @param blockId File block ID.
 * @param partCnt Total partitions count.
 * @return Partition index.
 */
private int partition(IgfsGroupDataBlocksKeyMapper mapper, IgniteUuid fileId, long blockId, int partCnt) {
    return U.safeAbs((Integer) mapper.affinityKey(new IgfsBlockKey(fileId, null, false, blockId)) % partCnt);
}
 

import org.apache.ignite.internal.util.typedef.internal.U; //导入方法依赖的package包/类
/**
 * Check correct partition shift.
 *
 * @param prevPart Previous partition.
 * @param part Current partition.
 * @param totalParts Total partitions.
 * @return {@code true} if previous and current partitions have correct values.
 */
private boolean checkPartition(int prevPart, int part, int totalParts) {
    return U.safeAbs(prevPart - part) == 1 ||
        (part == 0 && prevPart == totalParts - 1) ||
        (prevPart == 0 && part == totalParts - 1);
}