| #ifndef ELEMDDLCONSTRAINTRI_H |
| #define ELEMDDLCONSTRAINTRI_H |
| /* -*-C++-*- |
| ***************************************************************************** |
| * |
| * File: ElemDDLConstraintRI.h |
| * Description: class for Referential Integrity constraint definitions |
| * in DDL statements |
| * |
| * |
| * Created: 3/29/95 |
| * Language: C++ |
| * |
| * |
| // @@@ START COPYRIGHT @@@ |
| // |
| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| // |
| // @@@ END COPYRIGHT @@@ |
| * |
| * |
| ***************************************************************************** |
| */ |
| |
| |
| #include "ComSmallDefs.h" |
| #include "ElemDDLColNameArray.h" |
| #include "ElemDDLConstraint.h" |
| |
| // ----------------------------------------------------------------------- |
| // contents of this file |
| // ----------------------------------------------------------------------- |
| class ElemDDLConstraintRI; |
| |
| // ----------------------------------------------------------------------- |
| // forward references |
| // ----------------------------------------------------------------------- |
| // None. |
| |
| // ----------------------------------------------------------------------- |
| // Referential Integrity Constraint Definition elements in DDL statements |
| // ----------------------------------------------------------------------- |
| class ElemDDLConstraintRI : public ElemDDLConstraint |
| { |
| |
| public: |
| |
| // default constructor |
| ElemDDLConstraintRI(ElemDDLNode * pReferencedTableAndColumns = NULL, |
| ComRCMatchOption matchType = COM_NONE_MATCH_OPTION, |
| ElemDDLNode * pReferentialTriggerActions = NULL, |
| CollHeap * heap = PARSERHEAP()); |
| |
| // virtual destructor |
| virtual ~ElemDDLConstraintRI(); |
| |
| // cast |
| virtual ElemDDLConstraintRI * castToElemDDLConstraintRI(); |
| |
| // |
| // accessors |
| // |
| |
| virtual Int32 getArity() const; |
| virtual ExprNode * getChild(Lng32 index); |
| |
| inline ComRCDeleteRule getDeleteRule() const; |
| |
| // returns COM_UNKNOWN_DELETE_RULE when Delete |
| // rule does not appear. |
| |
| inline ComRCMatchOption getMatchType() const; |
| NAString getMatchTypeAsNAString() const; |
| inline ElemDDLColNameArray & getReferencedColumns(); |
| inline const ElemDDLColNameArray & getReferencedColumns() const; |
| |
| NAString getReferencedTableName() const; |
| |
| // returns the externally-formatted name of the |
| // referenced table. If this routine is invoked |
| // after the parse node is bound, the returned |
| // name is guaranteed to be fully-expanded. |
| |
| inline ElemDDLNode * getReferencingColumnNameList() const; |
| |
| // returns the pointer pointing to either a parse node |
| // representing a column name or a left-skewed binary |
| // tree representing a (left linear tree) list of |
| // parse nodes representing column names. |
| // |
| // Note that the method returns the NULL pointer value |
| // if the constraint is a column constraint and the method |
| // is invoked before the construction of the Column |
| // Definition parse node. (During the construction of the |
| // Column Definition parse node, a new Column Name parse |
| // node is created, for the column constraint, to contain |
| // the name of the column.) |
| |
| inline ElemDDLColNameArray & getReferencingColumns(); |
| inline const ElemDDLColNameArray & getReferencingColumns() const; |
| |
| inline ComRCUpdateRule getUpdateRule() const; |
| |
| // returns COM_UNKNOWN_UPDATE_RULE when Update |
| // rule does not appear. |
| |
| inline NABoolean isDeleteRuleSpecified() const; |
| inline NABoolean isUpdateRuleSpecified() const; |
| |
| // mutators |
| virtual void setChild(Lng32 index, ExprNode * pChildNode); |
| void setReferencingColumnNameList(ElemDDLNode * pReferencingColumnNameList); |
| |
| // methods for tracing |
| virtual const NAString displayLabel2() const; |
| virtual NATraceList getDetailInfo() const; |
| virtual const NAString getText() const; |
| |
| // methods for processing |
| virtual ExprNode * bindNode(BindWA *pBindWA); |
| |
| |
| private: |
| |
| // |
| // methods |
| // |
| |
| ElemDDLReferences * getReferencesNode() const; |
| |
| void setReferentialTriggeredAction(ElemDDLRefTrigAct * pRefTrigAct); |
| |
| // |
| // data members |
| // |
| |
| ElemDDLColNameArray referencingColumnNameArray_; |
| ElemDDLColNameArray referencedColumnNameArray_; |
| |
| ComRCMatchOption matchType_; |
| |
| NABoolean isDeleteRuleSpec_; |
| ComRCDeleteRule deleteRule_; |
| |
| NABoolean isUpdateRuleSpec_; |
| ComRCUpdateRule updateRule_; |
| |
| // pointers to child parse nodes |
| |
| enum { INDEX_REFERENCING_COLUMN_NAME_LIST = MAX_ELEM_DDL_CONSTRAINT_ARITY, |
| INDEX_REFERENCED_TABLE_AND_COLUMNS, |
| INDEX_REFERENTIAL_TRIGGERED_ACTIONS, |
| MAX_ELEM_DDL_CONSTRAINT_RI_ARITY }; |
| |
| ElemDDLNode * children_[MAX_ELEM_DDL_CONSTRAINT_RI_ARITY]; |
| |
| }; // class ElemDDLConstraintRI |
| |
| // ----------------------------------------------------------------------- |
| // definitions of inline methods for class ElemDDLConstraintRI |
| // ----------------------------------------------------------------------- |
| |
| // |
| // accessors |
| // |
| |
| inline ComRCDeleteRule |
| ElemDDLConstraintRI::getDeleteRule() const |
| { |
| return deleteRule_; |
| } |
| |
| inline ComRCMatchOption |
| ElemDDLConstraintRI::getMatchType() const |
| { |
| return matchType_; |
| } |
| |
| inline ElemDDLColNameArray & |
| ElemDDLConstraintRI::getReferencedColumns() |
| { |
| return referencedColumnNameArray_; |
| } |
| |
| inline const ElemDDLColNameArray & |
| ElemDDLConstraintRI::getReferencedColumns() const |
| { |
| return referencedColumnNameArray_; |
| } |
| |
| inline ElemDDLNode * |
| ElemDDLConstraintRI::getReferencingColumnNameList() const |
| { |
| return children_[INDEX_REFERENCING_COLUMN_NAME_LIST]; |
| } |
| |
| inline ElemDDLColNameArray & |
| ElemDDLConstraintRI::getReferencingColumns() |
| { |
| return referencingColumnNameArray_; |
| } |
| |
| inline const ElemDDLColNameArray & |
| ElemDDLConstraintRI::getReferencingColumns() const |
| { |
| return referencingColumnNameArray_; |
| } |
| |
| inline ComRCUpdateRule |
| ElemDDLConstraintRI::getUpdateRule() const |
| { |
| return updateRule_; |
| } |
| |
| inline NABoolean |
| ElemDDLConstraintRI::isDeleteRuleSpecified() const |
| { |
| return isDeleteRuleSpec_; |
| } |
| |
| inline NABoolean |
| ElemDDLConstraintRI::isUpdateRuleSpecified() const |
| { |
| return isUpdateRuleSpec_; |
| } |
| |
| #endif // ELEMDDLCONSTRAINTRI_H |