Github user denalex commented on a diff in the pull request:
https://github.com/apache/incubator-hawq/pull/1261#discussion_r124924223
--- Diff:
pxf/pxf-api/src/main/java/org/apache/hawq/pxf/api/examples/DummyAccessor.java
---
@@ -0,0 +1,46 @@
+package org.apache.hawq.pxf.api.examples;
+
+import org.apache.hawq.pxf.api.OneRow;
+import org.apache.hawq.pxf.api.ReadAccessor;
+import org.apache.hawq.pxf.api.utilities.InputData;
+import org.apache.hawq.pxf.api.utilities.Plugin;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
+public class DummyAccessor extends Plugin implements ReadAccessor {
+ private static final Log LOG = LogFactory.getLog(DummyAccessor.class);
+ private int rowNumber;
+ private int fragmentNumber;
+ public DummyAccessor(InputData metaData) {
+ super(metaData);
+ }
+ @Override
+ public boolean openForRead() throws Exception {
+ /* fopen or similar */
+ return true;
+ }
+ @Override
+ public OneRow readNextObject() throws Exception {
+ /* return next row , <key=fragmentNo.rowNo,
val=rowNo,text,fragmentNo>*/
--- End diff --
not sure whether this is relevant here, but can we produce "X,Hello World
X" string where X is a segment id ?
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