1 files changed, 78 insertions, 0 deletions
diff --git a/src/include/catalog/pg_tablesample_method.h b/src/include/catalog/pg_tablesample_method.h
new file mode 100644
index 0000000000..968d1e696a
--- /dev/null
+++ b/src/include/catalog/pg_tablesample_method.h
@@ -0,0 +1,78 @@
+/*-------------------------------------------------------------------------
+ *
+ * pg_tablesample_method.h
+ *	  definition of the table scan methods.
+ *
+ *
+ * Portions Copyright (c) 1996-2014, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/catalog/pg_tablesample_method.h
+ *
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PG_TABLESAMPLE_METHOD_H
+#define PG_TABLESAMPLE_METHOD_H
+
+#include "catalog/genbki.h"
+#include "catalog/objectaddress.h"
+
+/* ----------------
+ *		pg_tablesample_method definition.  cpp turns this into
+ *		typedef struct FormData_pg_tablesample_method
+ * ----------------
+ */
+#define TableSampleMethodRelationId	3330
+
+CATALOG(pg_tablesample_method,3330)
+{
+	NameData	tsmname;		/* tablesample method name */
+	bool		tsmseqscan;		/* does this method scan whole table sequentially? */
+	bool		tsmpagemode;	/* does this method scan page at a time? */
+	regproc		tsminit;		/* init scan function */
+	regproc		tsmnextblock;	/* function returning next block to sample
+								   or InvalidBlockOffset if finished */
+	regproc		tsmnexttuple;	/* function returning next tuple offset from current block
+								   or InvalidOffsetNumber if end of the block was reacher */
+	regproc		tsmexaminetuple;	/* optional function which can examine tuple contents and
+								   decide if tuple should be returned or not */
+	regproc		tsmend;			/* end scan function*/
+	regproc		tsmreset;		/* reset state - used by rescan */
+	regproc		tsmcost;		/* costing function */
+} FormData_pg_tablesample_method;
+
+/* ----------------
+ *		Form_pg_tablesample_method corresponds to a pointer to a tuple with
+ *		the format of pg_tablesample_method relation.
+ * ----------------
+ */
+typedef FormData_pg_tablesample_method *Form_pg_tablesample_method;
+
+/* ----------------
+ *		compiler constants for pg_tablesample_method
+ * ----------------
+ */
+#define Natts_pg_tablesample_method					10
+#define Anum_pg_tablesample_method_tsmname			1
+#define Anum_pg_tablesample_method_tsmseqscan		2
+#define Anum_pg_tablesample_method_tsmpagemode		3
+#define Anum_pg_tablesample_method_tsminit			4
+#define Anum_pg_tablesample_method_tsmnextblock		5
+#define Anum_pg_tablesample_method_tsmnexttuple		6
+#define Anum_pg_tablesample_method_tsmexaminetuple	7
+#define Anum_pg_tablesample_method_tsmend			8
+#define Anum_pg_tablesample_method_tsmreset			9
+#define Anum_pg_tablesample_method_tsmcost			10
+
+/* ----------------
+ *		initial contents of pg_tablesample_method
+ * ----------------
+ */
+
+DATA(insert OID = 3333 ( system false true tsm_system_init tsm_system_nextblock tsm_system_nexttuple - tsm_system_end tsm_system_reset tsm_system_cost ));
+DESCR("SYSTEM table sampling method");
+DATA(insert OID = 3334 ( bernoulli true false tsm_bernoulli_init tsm_bernoulli_nextblock tsm_bernoulli_nexttuple - tsm_bernoulli_end tsm_bernoulli_reset tsm_bernoulli_cost ));
+DESCR("BERNOULLI table sampling method");
+
+#endif   /* PG_TABLESAMPLE_METHOD_H */