61 lines
2.1 KiB
Java
61 lines
2.1 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* Created on May 15, 2005
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*
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*/
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package org.apache.poi.hssf.record.formula.functions;
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import org.apache.poi.hssf.record.formula.eval.BlankEval;
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import org.apache.poi.hssf.record.formula.eval.ErrorEval;
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import org.apache.poi.hssf.record.formula.eval.Eval;
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import org.apache.poi.hssf.record.formula.eval.StringEval;
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import org.apache.poi.hssf.record.formula.eval.StringValueEval;
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import org.apache.poi.hssf.record.formula.eval.ValueEval;
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/**
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* @author Amol S. Deshmukh < amolweb at ya hoo dot com >
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*
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*/
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public class Concatenate extends TextFunction {
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public Eval evaluate(Eval[] operands, int srcCellRow, short srcCellCol) {
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ValueEval retval = null;
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StringBuffer sb = new StringBuffer();
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for (int i=0, iSize=operands.length; i<iSize; i++) {
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ValueEval ve = singleOperandEvaluate(operands[i], srcCellRow, srcCellCol);
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if (ve instanceof StringValueEval) {
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StringValueEval sve = (StringValueEval) ve;
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sb.append(sve.getStringValue());
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}
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else if (ve instanceof BlankEval) {}
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else {
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retval = ErrorEval.VALUE_INVALID;
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break;
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}
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}
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if (retval == null) {
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retval = new StringEval(sb.toString());
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}
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return retval;
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}
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}
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