/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
//
/**
* @author Neeraj Joshi
*
*/
package org.apache.imperius.spl.parser.expressions.impl;
import java.util.List;
import java.util.Vector;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.imperius.spl.core.TypeConstants;
import org.apache.imperius.spl.core.TypeInfo;
import org.apache.imperius.spl.parser.exceptions.SPLException;
import org.apache.imperius.spl.parser.expressions.DoubleArgumentExpression;
import org.apache.imperius.spl.parser.expressions.NumericExpression;
import org.apache.imperius.spl.parser.util.ExpressionUtility;
import org.apache.imperius.spl.parser.util.TypeResolver;
import org.apache.imperius.util.Messages;
import org.apache.imperius.util.SPLLogger;
public class Product extends DoubleArgumentExpression implements
NumericExpression
{
public static final String className = Product.class.getName();
private static Logger logger = SPLLogger.getSPLLogger().getLogger();
private static final String sourceClass="Product";
public Product(List exprList, boolean validateExpression)
throws SPLException
{
super(exprList);
logger.entering(sourceClass, "Product");
if (validateExpression)
{
if (!validate())
{
logger.severe(Thread.currentThread().getName()+" "+"validation error: " + className
+ " has wrong data type passed in.");
throw new SPLException(Messages.getString(
"SPL_VALIDATION_ERROR_MSG", new Object[] { className }));
}
}
logger.exiting(sourceClass, "Product");
}
public Object evaluate() throws SPLException
{
logger.entering(sourceClass, "evaluate");
try
{
if(logger.isLoggable(Level.FINE))
logger.fine("LHS*RHS "+_lhsExp.toString()+" * "+_rhsExp.toString());
Number lhs = (Number) _lhsExp.evaluate();
Number rhs = (Number) _rhsExp.evaluate();
if(logger.isLoggable(Level.FINE))
logger.fine("LHS,RHS::"+lhs+","+rhs);
Number result = ExpressionUtility.multiplication(lhs, rhs);
if(logger.isLoggable(Level.FINE))
logger.fine("product result ::"+lhs+" * "+rhs+"="+result);
logger.exiting(sourceClass, "evaluate");
return result;
}
catch (Exception e)
{
logger.severe(Thread.currentThread().getName()+" "+"evaluation error: " + e.toString());
throw new SPLException(Messages.getString(
"SPL_EVALUATION_ERROR_MSG", new Object[] { e
.getLocalizedMessage() }));
}
}
// private Number _product(Number o1, Number o2) throws SPLException
// {
// logger.entering(sourceClass, "evaluate");
//
// Number[] o = new Number[2];
// o[0] = o1;
// o[1] = o2;
//
// if((o1!=null)&&(o2!=null))
// {
//
// //if (resolvedType == TypeConstants.doubleType)
// //{
//
//
// Double result=new Double(o1.doubleValue() * o2.doubleValue());
// if(logger.isLoggable(Level.FINE))
// logger.fine("result "+result);
// logger.exiting(sourceClass, "evaluate");
//
// return result;
// /* }
// else if (resolvedType == TypeConstants.floatType)
// {
// logger.exiting(sourceClass, "evaluate");
//
// Float result=new Float(o1.floatValue() * o2.floatValue());
// if(logger.isLoggable(Level.FINE))
// logger.fine("result "+result);
//
// return result;
// }
// else if (resolvedType == TypeConstants.longType)
// {
// logger.exiting(sourceClass, "evaluate");
//
// Long result=new Long(o1.longValue() * o2.longValue());
// if(logger.isLoggable(Level.FINE))
// logger.fine("result "+result);
//
// return result;
// }
// else if (resolvedType == TypeConstants.intType)
// {
// logger.exiting(sourceClass, "evaluate");
//
// Long result=new Long(o1.intValue() * o2.intValue());
// if(logger.isLoggable(Level.FINE))
// logger.fine("result "+result);
//
// return result;
// }
// else
// {
// logger.exiting(sourceClass, "evaluate");
//
// Integer result=new Integer(o1.byteValue() * o2.byteValue());
// if(logger.isLoggable(Level.FINE))
// logger.fine("result "+result);
//
// return result;
// }*/
// }
// else
// {
// logger.severe(Thread.currentThread().getName()+" "+"operand is null LHS="+o1+" RHS="+o2);
//
// throw new SPLException("operand is null LHS="+o1+" RHS="+o2);
// }
// }
public static Number product(Vector o) {
Number[] operandArray = (Number[]) o.toArray(new Number[0]);
return product(operandArray);
}
public static Number product(Number[] o)
{
logger.entering(sourceClass, "product(Number[])");
Number result = null;
for (int i = 0; i < o.length; i++) {
if (i == 0) {
result = o[i];
} else {
result = new Double(result.doubleValue() * o[i].doubleValue());
}
}
logger.exiting(sourceClass, "product(Number[])");
return result;
}
public static Number product(Number o1, Number o2) throws SPLException
{
logger.entering(sourceClass, "evaluate");
Number[] o = new Number[2];
o[0] = o1;
o[1] = o2;
if((o1!=null)&&(o2!=null))
{
//if (resolvedType == TypeConstants.doubleType)
//{
Double result=new Double(o1.doubleValue() * o2.doubleValue());
if(logger.isLoggable(Level.FINE))
logger.fine("result "+result);
logger.exiting(sourceClass, "evaluate");
return result;
/* }
else if (resolvedType == TypeConstants.floatType)
{
logger.exiting(sourceClass, "evaluate");
Float result=new Float(o1.floatValue() * o2.floatValue());
if(logger.isLoggable(Level.FINE))
logger.fine("result "+result);
return result;
}
else if (resolvedType == TypeConstants.longType)
{
logger.exiting(sourceClass, "evaluate");
Long result=new Long(o1.longValue() * o2.longValue());
if(logger.isLoggable(Level.FINE))
logger.fine("result "+result);
return result;
}
else if (resolvedType == TypeConstants.intType)
{
logger.exiting(sourceClass, "evaluate");
Long result=new Long(o1.intValue() * o2.intValue());
if(logger.isLoggable(Level.FINE))
logger.fine("result "+result);
return result;
}
else
{
logger.exiting(sourceClass, "evaluate");
Integer result=new Integer(o1.byteValue() * o2.byteValue());
if(logger.isLoggable(Level.FINE))
logger.fine("result "+result);
return result;
}*/
}
else
{
logger.severe(Thread.currentThread().getName()+" "+"operand is null LHS="+o1+" RHS="+o2);
throw new SPLException("operand is null LHS="+o1+" RHS="+o2);
}
}
public boolean validate() throws SPLException
{
logger.entering(sourceClass, "validate");
TypeInfo lType = _lhsExp.getType();
TypeInfo rType = _rhsExp.getType();
// dataType = TypeConstants.numericType;
if (!lType.getIsArray() && !rType.getIsArray() &&
TypeResolver.isNumeric(lType) && TypeResolver.isNumeric(rType))
{
//dataType = TypeResolver
// .binaryNumericPromotionResolver(lType, rType);
_dataType.setType(TypeConstants.doubleType);
logger.exiting(sourceClass, "validate");
return true;
}
logger.exiting(sourceClass, "validate");
return false;
}
public String toString()
{
logger.entering(sourceClass,Thread.currentThread().getName()+" "+ "toString");
String str=this._lhsExp.toString() + "*" + this._rhsExp.toString();
logger.exiting(sourceClass,Thread.currentThread().getName()+" "+ "toString");
return str;
}
}