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* @return a new Query Variable. */ public static Variable variable( String name ) { NullArgumentException.validateNotNull( "Variable name", name ); return new Variable( name ); }
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{ return null; } if( value instanceof Variable ) { Variable var = (Variable) value; Object realValue = variables.get( var.variableName() ); if( realValue == null ) { throw new IllegalArgumentException( "Variable " + var.variableName() + " not bound" ); } return realValue; } return value; }