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Bugzilla 46818 (patch from Wayne Clingingsmith) - added implementation for HYPERLINK function 

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@760343 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Josh Micich 2009-03-31 06:09:06 +00:00
parent d92e7179bf
commit 2d91c7b31f
1 changed files with 52 additions and 21 deletions
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73
src/java/org/apache/poi/hssf/record/formula/functions/Hyperlink.java
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/*
* 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 15, 2005
*
*/
/* ====================================================================
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.
==================================================================== */
package org.apache.poi.hssf.record.formula.functions;
public class Hyperlink extends NotImplementedFunction {
import org.apache.poi.hssf.record.formula.eval.ErrorEval;
import org.apache.poi.hssf.record.formula.eval.Eval;
import org.apache.poi.hssf.record.formula.eval.EvaluationException;
import org.apache.poi.hssf.record.formula.eval.OperandResolver;
import org.apache.poi.hssf.record.formula.eval.StringEval;
/**
* Implementation of Excel HYPERLINK function.<p/>
*
* In Excel this function has special behaviour - it causes the displayed cell value to behave like
* a hyperlink in the GUI. From an evaluation perspective however, it is very simple.<p/>
*
* <b>Syntax</b>:<br/>
* <b>HYPERLINK</b>(<b>link_location</b>, friendly_name)<p/>
*
* <b>link_location</b> The URL of the hyperlink <br/>
* <b>friendly_name</b> (optional) the value to display<p/>
*
* Returns last argument. Leaves type unchanged (does not convert to {@link StringEval}).
* @author Wayne Clingingsmith
*/
public class Hyperlink implements Function {
public Eval evaluate(Eval[] operands, int srcRow, short srcCol) {
int lastArgIx = operands.length - 1;
if (lastArgIx < 0 || lastArgIx > 1) {
return ErrorEval.VALUE_INVALID;
}
try {
return OperandResolver.getSingleValue(operands[lastArgIx], srcRow, srcCol);
} catch (EvaluationException e) {
return e.getErrorEval();
}
}
}