Differences
This shows you the differences between two versions of the page.
Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
courses:mapreduce-tutorial:step-27 [2012/01/28 18:45] straka |
courses:mapreduce-tutorial:step-27 [2012/01/28 18:57] straka |
||
---|---|---|---|
Line 54: | Line 54: | ||
===== PairWritable< | ===== PairWritable< | ||
+ | |||
+ | As another example, we implement a type consisting of two user-defined '' | ||
+ | <code java> | ||
+ | public static class PairWritable< | ||
+ | private A first; | ||
+ | private B second; | ||
+ | |||
+ | public void readFields(DataInput in) throws IOException { | ||
+ | first.readFields(in); | ||
+ | second.readFields(in); | ||
+ | } | ||
+ | |||
+ | public void write(DataOutput out) throws IOException { | ||
+ | first.write(out); | ||
+ | second.write(out); | ||
+ | } | ||
+ | |||
+ | public A getFirst() { return first; } | ||
+ | public B getSecond() { return second; } | ||
+ | public void setFirst(A first) { this.first = first; } | ||
+ | public void setSecond(B first) { this.second = second; } | ||
+ | public PairWritable(A first, B second) { this.first = first; this.second = second; } | ||
+ | } | ||
+ | </ | ||