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Phase 3 of read-only-plans project: ExecInitExpr now builds expression

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execution state trees, and ExecEvalExpr takes an expression state tree
not an expression plan tree.  The plan tree is now read-only as far as
the executor is concerned.  Next step is to begin actually exploiting
this property.
This commit is contained in:
Tom Lane
2002-12-13 19:46:01 +00:00
parent 77b7a740f9
commit 3a4f7dde16
49 changed files with 993 additions and 815 deletions
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11
src/backend/nodes/readfuncs.c
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@ -8,12 +8,13 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/nodes/readfuncs.c,v 1.142 2002/12/12 20:35:12 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/nodes/readfuncs.c,v 1.143 2002/12/13 19:45:56 tgl Exp $
*
* NOTES
* Path and Plan nodes do not have any readfuncs support, because we
* never have occasion to read them in. (There was once code here that
* claimed to read them, but it was broken as well as unused.)
* claimed to read them, but it was broken as well as unused.) We
* never read executor state trees, either.
*
*-------------------------------------------------------------------------
*/
@ -439,8 +440,6 @@ _readFuncExpr(void)
READ_ENUM_FIELD(funcformat, CoercionForm);
READ_NODE_FIELD(args);
local_node->func_fcache = NULL;
READ_DONE();
}
@ -468,8 +467,6 @@ _readOpExpr(void)
READ_BOOL_FIELD(opretset);
READ_NODE_FIELD(args);
local_node->op_fcache = NULL;
READ_DONE();
}
@ -497,8 +494,6 @@ _readDistinctExpr(void)
READ_BOOL_FIELD(opretset);
READ_NODE_FIELD(args);
local_node->op_fcache = NULL;
READ_DONE();
}