RWDBCollectableExpr

                        RWCollectable
RWDBCollectableExpr
                        RWDBExpr

• Data Type and Member Function Indexes
• Synopsis
• Description
• Related Classes
• Public Constructor
• Public Member Functions

Member Functions
hash()	isEqual()

#include <rw/db/expr.h>

RWDBCollectableExpr adds RWCollectable semantics to RWDBExpr. DBTools.h++ uses RWDBCollectableExpr internally to store lists of RWDBExprs. Applications requiring similar functionality can do the same.

RWDBCollectableExpr is a special case of RWDBExpr. See RWDBExpr for details. See your Tools.h++ documentation for details about RWCollectable.

RWDBCollectableExpr(const RWDBExpr& expr);

Creates an RWDBCollectableExpr from the given expr.

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NOTE:All RWDBCollectableExpr methods other than the following are inherited.

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unsigned
hash() const;

Redefined from RWCollectable. Returns asString.hash().

RWBoolean
isEqual(const RWCollectable* expr) const;

Redefined from RWCollectable. Dereferences expr as an RWCollectableExpr* and compares the result of its asString() to the result of self's asString().

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