greaterthaneval.java

java 读写word excel ppt

/*
* 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.
*/
/*
 * Created on May 8, 2005
 *
 */
package org.apache.poi.hssf.record.formula.eval;

import org.apache.poi.hssf.record.formula.GreaterThanPtg;
import org.apache.poi.hssf.record.formula.Ptg;

/**
 * @author Amol S. Deshmukh < amolweb at ya hoo dot com >
 *  
 */
public class GreaterThanEval extends RelationalOperationEval {

    private GreaterThanPtg delegate;

    public GreaterThanEval(Ptg ptg) {
        this.delegate = (GreaterThanPtg) ptg;
    }

    public Eval evaluate(Eval[] operands, int srcRow, short srcCol) {
        ValueEval retval = null;
        
        RelationalValues rvs = super.doEvaluate(operands, srcRow, srcCol);
        retval = rvs.ee;
        int result = 0;
        if (retval == null) {
            result = doComparison(rvs.bs);
            if (result == 0) {
                result = doComparison(rvs.ss);
            }
            if (result == 0) {
                result = doComparison(rvs.ds);
            }

            retval = (result > 0) ? BoolEval.TRUE : BoolEval.FALSE;;
        }

        return retval;
    }

    public int getNumberOfOperands() {
        return delegate.getNumberOfOperands();
    }

    public int getType() {
        return delegate.getType();
    }

}