本文整理汇总了Java中org.apache.hadoop.hbase.filter.ByteArrayComparable.getValue方法的典型用法代码示例。如果您正苦于以下问题：Java ByteArrayComparable.getValue方法的具体用法？Java ByteArrayComparable.getValue怎么用？Java ByteArrayComparable.getValue使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.apache.hadoop.hbase.filter.ByteArrayComparable的用法示例。
在下文中一共展示了ByteArrayComparable.getValue方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: checkAndRowMutate
import org.apache.hadoop.hbase.filter.ByteArrayComparable; //导入方法依赖的package包/类
/**
* @return true if the new put was executed, false otherwise
* @throws IOException
*/
public boolean checkAndRowMutate(byte[] row, byte[] family, byte[] qualifier,
CompareOp compareOp, ByteArrayComparable comparator, RowMutations rm,
boolean writeToWAL)
throws IOException {
checkReadOnly();
//TODO, add check for value length or maybe even better move this to the
//client if this becomes a global setting
checkResources();
startRegionOperation();
try {
Get get = new Get(row);
checkFamily(family);
get.addColumn(family, qualifier);
// Lock row - note that doBatchMutate will relock this row if called
RowLock rowLock = getRowLock(get.getRow());
// wait for all previous transactions to complete (with lock held)
mvcc.waitForPreviousTransactionsComplete();
try {
List<Cell> result = get(get, false);
boolean valueIsNull = comparator.getValue() == null ||
comparator.getValue().length == 0;
boolean matches = false;
if (result.size() == 0 && valueIsNull) {
matches = true;
} else if (result.size() > 0 && result.get(0).getValueLength() == 0 &&
valueIsNull) {
matches = true;
} else if (result.size() == 1 && !valueIsNull) {
Cell kv = result.get(0);
int compareResult = comparator.compareTo(kv.getValueArray(),
kv.getValueOffset(), kv.getValueLength());
switch (compareOp) {
case LESS:
matches = compareResult < 0;
break;
case LESS_OR_EQUAL:
matches = compareResult <= 0;
break;
case EQUAL:
matches = compareResult == 0;
break;
case NOT_EQUAL:
matches = compareResult != 0;
break;
case GREATER_OR_EQUAL:
matches = compareResult >= 0;
break;
case GREATER:
matches = compareResult > 0;
break;
default:
throw new RuntimeException("Unknown Compare op " + compareOp.name());
}
}
//If matches put the new put or delete the new delete
if (matches) {
// All edits for the given row (across all column families) must
// happen atomically.
mutateRow(rm);
this.checkAndMutateChecksPassed.increment();
return true;
}
this.checkAndMutateChecksFailed.increment();
return false;
} finally {
rowLock.release();
}
} finally {
closeRegionOperation();
}
}