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Commit1ab9b01

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committed
Allow binary I/O of type "void".
void_send is useful for the same reason that void_out doesn't throw error,namely that someone might do "select void_returning_func(...)" from aclient that prefers to operate in binary mode. The void_recv function mayor may not have any practical use, but we provide it for symmetry.Radosław Smogura
1 parentedb3821 commit1ab9b01

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5 files changed

+36
-2
lines changed

5 files changed

+36
-2
lines changed

‎src/backend/utils/adt/pseudotypes.c

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Original file line numberDiff line numberDiff line change
@@ -212,6 +212,34 @@ void_out(PG_FUNCTION_ARGS)
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PG_RETURN_CSTRING(pstrdup(""));
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}
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/*
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* void_recv- binary input routine for pseudo-type VOID.
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*
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* Note that since we consume no bytes, an attempt to send anything but
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* an empty string will result in an "invalid message format" error.
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*/
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Datum
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void_recv(PG_FUNCTION_ARGS)
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{
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PG_RETURN_VOID();
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}
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/*
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* void_send- binary output routine for pseudo-type VOID.
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*
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* We allow this so that "SELECT function_returning_void(...)" works
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* even when binary output is requested.
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*/
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Datum
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void_send(PG_FUNCTION_ARGS)
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{
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StringInfoDatabuf;
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/* send an empty string */
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pq_begintypsend(&buf);
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PG_RETURN_BYTEA_P(pq_endtypsend(&buf));
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}
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/*
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* trigger_in- input routine for pseudo-type TRIGGER.

‎src/include/catalog/catversion.h

Lines changed: 1 addition & 1 deletion
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@@ -53,6 +53,6 @@
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*/
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/*yyyymmddN */
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#defineCATALOG_VERSION_NO201102191
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#defineCATALOG_VERSION_NO201102221
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#endif

‎src/include/catalog/pg_proc.h

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Original file line numberDiff line numberDiff line change
@@ -4226,6 +4226,10 @@ DATA(insert OID = 2502 ( anyarray_recv PGNSP PGUID 12 1 0 0 f f f t f s 1 0
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DESCR("I/O");
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DATA(insertOID=2503 (anyarray_sendPGNSPPGUID12100ffftfs1017"2277"_null__null__null__null_anyarray_send_null__null__null_ ));
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DESCR("I/O");
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DATA(insertOID=3120 (void_recvPGNSPPGUID12100ffftfi102278"2281"_null__null__null__null_void_recv_null__null__null_ ));
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DESCR("I/O");
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DATA(insertOID=3121 (void_sendPGNSPPGUID12100ffftfi1017"2278"_null__null__null__null_void_send_null__null__null_ ));
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DESCR("I/O");
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/* System-view support functions with pretty-print option */
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DATA(insertOID=2504 (pg_get_ruledefPGNSPPGUID12100ffftfs2025"26 16"_null__null__null__null_pg_get_ruledef_ext_null__null__null_ ));

‎src/include/catalog/pg_type.h

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -615,7 +615,7 @@ DATA(insert OID = 2276 ( anyPGNSP PGUID 4 t p P f t \054 0 0 0 any_in any_ou
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#defineANYOID2276
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DATA(insertOID=2277 (anyarrayPGNSPPGUID-1fpPft \054000anyarray_inanyarray_outanyarray_recvanyarray_send---dxf0-100_null__null_ ));
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#defineANYARRAYOID2277
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DATA(insertOID=2278 (voidPGNSPPGUID4tpPft \054000void_invoid_out-----ipf0-100_null__null_ ));
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DATA(insertOID=2278 (voidPGNSPPGUID4tpPft \054000void_invoid_outvoid_recvvoid_send---ipf0-100_null__null_ ));
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#defineVOIDOID2278
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DATA(insertOID=2279 (triggerPGNSPPGUID4tpPft \054000trigger_intrigger_out-----ipf0-100_null__null_ ));
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#defineTRIGGEROID2279

‎src/include/utils/builtins.h

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Original file line numberDiff line numberDiff line change
@@ -504,6 +504,8 @@ extern Datum anyenum_in(PG_FUNCTION_ARGS);
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externDatumanyenum_out(PG_FUNCTION_ARGS);
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externDatumvoid_in(PG_FUNCTION_ARGS);
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externDatumvoid_out(PG_FUNCTION_ARGS);
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externDatumvoid_recv(PG_FUNCTION_ARGS);
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externDatumvoid_send(PG_FUNCTION_ARGS);
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externDatumtrigger_in(PG_FUNCTION_ARGS);
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externDatumtrigger_out(PG_FUNCTION_ARGS);
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externDatumlanguage_handler_in(PG_FUNCTION_ARGS);

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