FieldExpression< EString > Class Template Reference

#include <ExprUtil.h>

Inherits TypedExpression< EString >.

List of all members.

template<>
class FieldExpression< EString >

Public Member Functions
	FieldExpression (unsigned int which_tuple, unsigned int offset, unsigned int length)
EString	evalImpl (EvalAs< EString >, const EvalContext &ctxt) throw (EvalException)
	Evaluate as a string.
int32	getStringLength () const
	Returns the size of the string returned by the expression, or -1 if not known.

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Member Function Documentation

EString FieldExpression< EString >::evalImpl (  EvalAs< EString >  , const EvalContext &  ctxt )  throw (EvalException) [virtual]

Evaluate as a string. Implements TypedExpression< EString >.

FieldExpression< EString >::FieldExpression (  unsigned int  which_tuple, unsigned int  offset, unsigned int  length )

int32 FieldExpression< EString >::getStringLength (   )  const [virtual]

Returns the size of the string returned by the expression, or -1 if not known. By default returns -1. Reimplemented from Expression.

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The documentation for this class was generated from the following file:

• ExprUtil.h

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