Using rays in melee

[Vaz]

The Enlightened Fist prestige class lets you at 7th level "Hold Ray"


Hold Ray (Ex): At 7th level or higher, an enlightened fist can cast any spell that produces a ray effect as a touch spell instead. The spell's range is reduced to touch, and its Effect entry is replaced with "Target: Creature touched." She can deliver the spell with a touch attack or with a normal attack, and she can hold the charge as with a normal touch spell. An enlightened fist can combine this ability with arcane fist (see above) to deliver a ray-effect spell as part of an unarmed full attack action.
Is there any similar way of doing the same within 3.5 (not PF), preferably, as a feat?

[Firebug]

Which part do you want to duplicate? Using a Ray spell in melee or as part of a full attack action?

Rays in Melee can be duplicated with Precise Shot (so you don't take the -4 to attack rolls against a target in melee) and Defensive casting (so the opponent doesn't get an attack of opportunity.

[Vaz]

Preferably as part of a full attack action.

[Firebug]

In that case, Quicken Spell.

[Fax Celestis]

Nope, Enlightened Fist is the only way.

[Rubik]

You know what would be awesome? Finding a way to cast a ray spell and use it as a weapon made of semisolid magical energy to stab your opponents with.

[Crake]

and Defensive casting (so the opponent doesn't get an attack of opportunity).

You'd also provoke for performing a ranged attack, so the defensive casting would prevent the AoO for casting, but you'd still provoke for performing a ranged attack in melee.

[justiceforall]

Would the various methods of channeling spells (Duskblade, Spellsword, etc) satisfy your condition?

[Gwendol]

The ordained champion's channeling spell ability might work. Duskblade does not (only melee touch attack spells are channeled).