Changes between Version 3 and Version 4 of table_example2

Timestamp:

09/14/2012 05:38:09 PM (14 years ago)

Author:

liaojiaohe

Comment:

--

table_example2

@@ -7 +7 @@
 "s" + show_id[[BR]]
 "a" + album_id[[BR]]
-"m" + name
+"m" + name[[BR]]
 
+
+在一个ROW里面根据字段名查询可以使用Column的各种Filter[[BR]]
+
+{{{
+HTable t = ...;
+Scan s = ...;
+s.setStartRow("pets");
+s.setStopRow("pets");
+// get all columns for my pet "fluffy". 
+Filter f = new ColumnRangeFilter(Bytes.toBytes("fluffy"), true,
+                                 Bytes.toBytes("fluffz"), false);
+s.setFilter(f);
+s.setBatch(20); // avoid getting all columns for the HBase row 
+ResultScanner rs = t.getScanner(s);
+for (Result r = rs.next(); r != null; r = rs.next()) {
+  // r will now have all HBase columns that start with "fluffy",
+  // which would represent a single row
+  for (KeyValue kv : r.raw()) {
+    // each kv represent - the latest version of - a column
+  }
+}
+}}}
 
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