mirror of
https://github.com/FirebirdSQL/firebird.git
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1a4c0c5808
2) Slightly refactored the looper call chain to avoid code duplication. 3) Fixed CORE-4010: Fetch cannot be subsequently interrupted via DELETE FROM MON$STATEMENTS.
94 lines
3.4 KiB
C++
94 lines
3.4 KiB
C++
/*
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* The contents of this file are subject to the Interbase Public
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* License Version 1.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy
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* of the License at http://www.Inprise.com/IPL.html
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*
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* Software distributed under the License is distributed on an
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* "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express
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* or implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code was created by Inprise Corporation
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* and its predecessors. Portions created by Inprise Corporation are
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* Copyright (C) Inprise Corporation.
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*
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* All Rights Reserved.
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* Contributor(s): ______________________________________.
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* Adriano dos Santos Fernandes
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*/
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#ifndef JRD_STATEMENT_H
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#define JRD_STATEMENT_H
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#include "../include/fb_blk.h"
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#include "../jrd/exe.h"
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#include "../jrd/EngineInterface.h"
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namespace Jrd {
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// Compiled statement.
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class JrdStatement : public pool_alloc<type_req>
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{
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public:
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static const unsigned FLAG_SYS_TRIGGER = 0x01;
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static const unsigned FLAG_INTERNAL = 0x02;
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static const unsigned FLAG_IGNORE_PERM = 0x04;
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//static const unsigned FLAG_VERSION4 = 0x08;
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//static const unsigned MAP_LENGTH; // CVC: Moved to dsql/Nodes.h as STREAM_MAP_LENGTH
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static const unsigned MAX_CLONES = 1000;
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static const unsigned MAX_REQUEST_SIZE = 10485760; // 10 MB - just to be safe
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private:
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JrdStatement(thread_db* tdbb, MemoryPool* p, CompilerScratch* csb);
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public:
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static JrdStatement* makeStatement(thread_db* tdbb, CompilerScratch* csb, bool internalFlag);
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static jrd_req* makeRequest(thread_db* tdbb, CompilerScratch* csb, bool internalFlag);
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const Routine* getRoutine() const;
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bool isActive() const;
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jrd_req* findRequest(thread_db* tdbb);
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jrd_req* getRequest(thread_db* tdbb, USHORT level);
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void verifyAccess(thread_db* tdbb);
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void release(thread_db* tdbb);
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private:
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static void verifyTriggerAccess(thread_db* tdbb, jrd_rel* ownerRelation, trig_vec* triggers,
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jrd_rel* view);
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static void triggersExternalAccess(thread_db* tdbb, ExternalAccessList& list, trig_vec* tvec);
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void buildExternalAccess(thread_db* tdbb, ExternalAccessList& list);
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public:
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MemoryPool* pool;
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unsigned flags; // statement flags
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unsigned blrVersion;
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ULONG impureSize; // Size of impure area
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Firebird::Array<record_param> rpbsSetup;
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Firebird::Array<jrd_req*> requests; // vector of requests
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ExternalAccessList externalList; // Access to procedures/triggers to be checked
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AccessItemList accessList; // Access items to be checked
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ResourceList resources; // Resources (relations and indices)
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const jrd_prc* procedure; // procedure, if any
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const Function* function; // function, if any
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Firebird::MetaName triggerName; // name of request (trigger), if any
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JrdStatement* parentStatement; // Sub routine's parent statement
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Firebird::Array<JrdStatement*> subStatements; // Array of subroutines' statements
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const StmtNode* topNode; // top of execution tree
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Firebird::Array<const RecordSource*> fors; // record sources
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Firebird::Array<ULONG*> invariants; // pointer to nodes invariant offsets
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Firebird::RefStrPtr sqlText; // SQL text (encoded in the metadata charset)
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Firebird::Array<UCHAR> blr; // BLR for non-SQL query
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MapFieldInfo mapFieldInfo; // Map field name to field info
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MapItemInfo mapItemInfo; // Map item to item info
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JRequest* interface; // External interface to this JrdStatement
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};
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} // namespace Jrd
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#endif // JRD_STATEMENT_H
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