[flaptor-util commit] r198 - Added limiting methods to CollectionsUtil

[codesite...@google.com]

Author: san...@santip.com.ar
Date: Mon Jul 6 14:52:40 2009
New Revision: 198

Modified:
trunk/src/com/flaptor/util/CollectionsUtil.java

Log:
Added limiting methods to CollectionsUtil

Modified: trunk/src/com/flaptor/util/CollectionsUtil.java
==============================================================================
--- trunk/src/com/flaptor/util/CollectionsUtil.java (original)
+++ trunk/src/com/flaptor/util/CollectionsUtil.java Mon Jul 6 14:52:40 2009
@@ -28,6 +28,7 @@
import com.google.common.base.Function;
import com.google.common.base.Objects;
import com.google.common.base.Predicate;
+import com.google.common.collect.AbstractIterable;
import com.google.common.collect.AbstractIterator;
import com.google.common.collect.Comparators;
import com.google.common.collect.Iterables;
@@ -255,6 +256,30 @@

}

+ public static <T> Iterator<T> limit(final Iterator<T> iterator, final
int limit) {
+ return new Iterator<T>() {
+ private int left = limit;
+ public boolean hasNext() {
+ return iterator.hasNext() && left > 0;
+ }
+ public T next() {
+ left--;
+ return iterator.next();
+ }
+ public void remove() {
+ iterator.remove();
+ }
+ };
+ }
+
+ public static <T> Iterable<T> limit(final Iterable<T> iterable, final
int limit) {
+ return new AbstractIterable<T>() {
+ public Iterator<T> iterator() {
+ return limit(iterable.iterator(), limit);
+ }
+ };
+ }
+
/**
* Creates a list of sorted entries by copying them from the entrySet
of a map.
*
@@ -320,6 +345,8 @@

}

+
+
public static Function<String, Integer> PARSE_INT_FUNCTION = new
Function<String, Integer>() {
public Integer apply(String from) {
return Integer.valueOf(from);