/*****************************************************************************
SQLJEP - Java SQL Expression Parser 0.2
November 1 2006
(c) Copyright 2006, Alexey Gaidukov
SQLJEP Author: Alexey Gaidukov
SQLJEP is based on JEP 2.24 (http://www.singularsys.com/jep/)
(c) Copyright 2002, Nathan Funk
See LICENSE.txt for license information.
*****************************************************************************/
package com.meidusa.amoeba.sqljep.function;
import com.meidusa.amoeba.sqljep.function.PostfixCommand;
import com.meidusa.amoeba.sqljep.ASTFunNode;
import com.meidusa.amoeba.sqljep.JepRuntime;
import com.meidusa.amoeba.sqljep.ParseException;
public final class LogicalOR extends PostfixCommand {
final public int getNumberOfParameters() {
return 2;
}
public Comparable<?>[] evaluate(ASTFunNode node, JepRuntime runtime) throws ParseException {
node.childrenAccept(runtime.ev, null);
Comparable<?> param2 = runtime.stack.pop();
Comparable<?> param1 = runtime.stack.pop();
return new Comparable<?>[]{param1,param2};
}
public static Boolean or(Comparable<?> param1, Comparable<?> param2) throws ParseException {
if (param1 == null || param2 == null) {
return null;
}
if (param1 instanceof Boolean && param2 instanceof Boolean) {
return (((Boolean)param1).booleanValue()) || (((Boolean)param2).booleanValue());
}
throw new ParseException(WRONG_TYPE+ param1.getClass()+" or "+ param2.getClass());
}
public Comparable<?> getResult(Comparable<?>... comparables)
throws ParseException {
// TODO Auto-generated method stub
return or(comparables[0],comparables[1]);
}
}