import org.apache.accumulo.core.iterators.Filter; //导入依赖的package包/类
/**
 * Creates a {@link RegExFilter} setting to ignore the version row in a table.
 * @return the {@link RegExFilter} {@link IteratorSetting}.
 */
public static IteratorSetting getVersionRegExFilterSetting() {
    final IteratorSetting regex = new IteratorSetting(30, "version_regex", RegExFilter.class);
    RegExFilter.setRegexs(regex, "(.*)urn:(.*)#version[\u0000|\u0001](.*)", null, null, null, false);
    Filter.setNegate(regex, true);
    return regex;
}
 

import org.apache.accumulo.core.iterators.Filter; //导入依赖的package包/类
/**
 * Creates a {@link RegExFilter} setting to ignore the copy tool run time row in a table.
 * @return the {@link RegExFilter} {@link IteratorSetting}.
 */
public static IteratorSetting getCopyToolRunTimeRegExFilterSetting() {
    final IteratorSetting regex = new IteratorSetting(31, COPY_TOOL_RUN_TIME_LOCAL_NAME + "_regex", RegExFilter.class);
    RegExFilter.setRegexs(regex, "(.*)urn:(.*)#" + COPY_TOOL_RUN_TIME_LOCAL_NAME + "[\u0000|\u0001](.*)", null, null, null, false);
    Filter.setNegate(regex, true);
    return regex;
}
 

import org.apache.accumulo.core.iterators.Filter; //导入依赖的package包/类
/**
 * Creates a {@link RegExFilter} setting to ignore the copy tool split time row in a table.
 * @return the {@link RegExFilter} {@link IteratorSetting}.
 */
public static IteratorSetting getCopyToolSplitTimeRegExFilterSetting() {
    final IteratorSetting regex = new IteratorSetting(32, COPY_TOOL_SPLIT_TIME_LOCAL_NAME + "_regex", RegExFilter.class);
    RegExFilter.setRegexs(regex, "(.*)urn:(.*)#" + COPY_TOOL_SPLIT_TIME_LOCAL_NAME + "[\u0000|\u0001](.*)", null, null, null, false);
    Filter.setNegate(regex, true);
    return regex;
}
 

import org.apache.accumulo.core.iterators.Filter; //导入依赖的package包/类
/**
 * Creates a {@link RegExFilter} setting to ignore the copy tool time setting row in a table.
 * @return the {@link RegExFilter} {@link IteratorSetting}.
 */
public static IteratorSetting getCopyToolTimeOffsetRegExFilterSetting() {
    final IteratorSetting regex = new IteratorSetting(33, COPY_TOOL_TIME_OFFSET_LOCAL_NAME + "_regex", RegExFilter.class);
    RegExFilter.setRegexs(regex, "(.*)urn:(.*)#" + COPY_TOOL_TIME_OFFSET_LOCAL_NAME + "[\u0000|\u0001](.*)", null, null, null, false);
    Filter.setNegate(regex, true);
    return regex;
}
 

import org.apache.accumulo.core.iterators.Filter; //导入依赖的package包/类
protected static void findTopEnhanced(
		final SortedKeyValueIterator<Key, Value> source,
		final Filter filter ) {
	Key key;
	if (source.hasTop()) {
		key = source.getTopKey();
	}
	else {
		return;
	}
	while (!key.isDeleted() && !filter.accept(
			key,
			source.getTopValue())) {
		try {
			source.next();
			if (source.hasTop()) {
				key = source.getTopKey();
			}
			else {
				return;
			}
		}
		catch (final IOException e) {
			throw new RuntimeException(
					e);
		}
	}
}