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Addition of GreaterThan and LessThan in formulas (IF Functions)

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Originally submitted by Cameron Riley (PR 16392). Thanks.
Added simple tests at high and low level, more complicated cases to be tested
<= and >= probably still wont work!
Had to apply diff by hand, one horrible line at a time (yikes!!)


git-svn-id: https://svn.apache.org/repos/asf/jakarta/poi/trunk@353081 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Avik Sengupta 2003-05-04 18:22:09 +00:00
parent 4d078576d6
commit b59b8abe8e
6 changed files with 490 additions and 79 deletions
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158
src/java/org/apache/poi/hssf/model/FormulaParser.java
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@ -61,27 +61,9 @@ import java.util.Iterator;
import java.util.LinkedList; import java.util.LinkedList;
import java.util.List; import java.util.List;
import org.apache.poi.hssf.record.formula.AbstractFunctionPtg; //import PTG's .. since we need everything, import *
import org.apache.poi.hssf.record.formula.AddPtg; import org.apache.poi.hssf.record.formula.*;
import org.apache.poi.hssf.record.formula.Area3DPtg;
import org.apache.poi.hssf.record.formula.AreaPtg;
import org.apache.poi.hssf.record.formula.AttrPtg;
import org.apache.poi.hssf.record.formula.BoolPtg;
import org.apache.poi.hssf.record.formula.ConcatPtg;
import org.apache.poi.hssf.record.formula.DividePtg;
import org.apache.poi.hssf.record.formula.EqualPtg;
import org.apache.poi.hssf.record.formula.FuncVarPtg;
import org.apache.poi.hssf.record.formula.IntPtg;
import org.apache.poi.hssf.record.formula.MultiplyPtg;
import org.apache.poi.hssf.record.formula.NumberPtg;
import org.apache.poi.hssf.record.formula.OperationPtg;
import org.apache.poi.hssf.record.formula.ParenthesisPtg;
import org.apache.poi.hssf.record.formula.PowerPtg;
import org.apache.poi.hssf.record.formula.Ptg;
import org.apache.poi.hssf.record.formula.Ref3DPtg;
import org.apache.poi.hssf.record.formula.ReferencePtg;
import org.apache.poi.hssf.record.formula.StringPtg;
import org.apache.poi.hssf.record.formula.SubtractPtg;
import org.apache.poi.hssf.util.SheetReferences; import org.apache.poi.hssf.util.SheetReferences;
@ -98,6 +80,7 @@ import org.apache.poi.hssf.util.SheetReferences;
* @author Avik Sengupta <avik AT Avik Sengupta DOT com> * @author Avik Sengupta <avik AT Avik Sengupta DOT com>
* @author Andrew C. oliver (acoliver at apache dot org) * @author Andrew C. oliver (acoliver at apache dot org)
* @author Eric Ladner (eladner at goldinc dot com) * @author Eric Ladner (eladner at goldinc dot com)
* @author Cameron Riley (criley at ekmail.com)
*/ */
public class FormulaParser { public class FormulaParser {
@ -154,7 +137,7 @@ public class FormulaParser {
return; return;
} }
look=formulaString.charAt(pointer++); look=formulaString.charAt(pointer++);
//System.out.println("Got char: "+Look); //System.out.println("Got char: "+ look);
} }
@ -380,18 +363,17 @@ public class FormulaParser {
} }
private int getPtgSize(int start, int end) { private int getPtgSize(int start, int end) {
int count = 0; int count = 0;
int index = start; int index = start;
Iterator ptgIterator = tokens.listIterator(index); Iterator ptgIterator = tokens.listIterator(index);
while (ptgIterator.hasNext() && index <= end) { while (ptgIterator.hasNext() && index <= end) {
Ptg ptg = (Ptg)ptgIterator.next(); Ptg ptg = (Ptg)ptgIterator.next();
count+=ptg.getSize(); count+=ptg.getSize();
index++; index++;
} }
return count; return count;
} }
/** /**
* Generates the variable function ptg for the formula. * Generates the variable function ptg for the formula.
* <p> * <p>
@ -403,19 +385,19 @@ public class FormulaParser {
private Ptg getFunction(String name,byte numArgs) { private Ptg getFunction(String name,byte numArgs) {
Ptg retval = null; Ptg retval = null;
if (name.equals("IF")) { if (name.equals("IF")) {
retval = new FuncVarPtg(AbstractFunctionPtg.ATTR_NAME, numArgs); retval = new FuncVarPtg(AbstractFunctionPtg.ATTR_NAME, numArgs);
//simulated pop, no bounds checking because this list better be populated by function() //simulated pop, no bounds checking because this list better be populated by function()
List argumentPointers = (List)this.functionTokens.get(0); List argumentPointers = (List)this.functionTokens.get(0);
AttrPtg ifPtg = new AttrPtg(); AttrPtg ifPtg = new AttrPtg();
ifPtg.setData((short)7); //mirroring excel output ifPtg.setData((short)7); //mirroring excel output
ifPtg.setOptimizedIf(true); ifPtg.setOptimizedIf(true);
if (argumentPointers.size() != 2 && argumentPointers.size() != 3) { if (argumentPointers.size() != 2 && argumentPointers.size() != 3) {
throw new IllegalArgumentException("["+argumentPointers.size()+"] Arguments Found - An IF formula requires 2 or 3 arguments. IF(CONDITION, TRUE_VALUE, FALSE_VALUE [OPTIONAL]"); throw new IllegalArgumentException("["+argumentPointers.size()+"] Arguments Found - An IF formula requires 2 or 3 arguments. IF(CONDITION, TRUE_VALUE, FALSE_VALUE [OPTIONAL]");
} }
//Biffview of an IF formula record indicates the attr ptg goes after the condition ptgs and are //Biffview of an IF formula record indicates the attr ptg goes after the condition ptgs and are
@ -423,50 +405,50 @@ public class FormulaParser {
//The beginning first argument pointer is the last ptg of the condition //The beginning first argument pointer is the last ptg of the condition
int ifIndex = tokens.indexOf(argumentPointers.get(0))+1; int ifIndex = tokens.indexOf(argumentPointers.get(0))+1;
tokens.add(ifIndex, ifPtg); tokens.add(ifIndex, ifPtg);
//we now need a goto ptgAttr to skip to the end of the formula after a true condition //we now need a goto ptgAttr to skip to the end of the formula after a true condition
//the true condition is should be inserted after the last ptg in the first argument //the true condition is should be inserted after the last ptg in the first argument
int gotoIndex = tokens.indexOf(argumentPointers.get(1))+1; int gotoIndex = tokens.indexOf(argumentPointers.get(1))+1;
AttrPtg goto1Ptg = new AttrPtg(); AttrPtg goto1Ptg = new AttrPtg();
goto1Ptg.setGoto(true); goto1Ptg.setGoto(true);
tokens.add(gotoIndex, goto1Ptg); tokens.add(gotoIndex, goto1Ptg);
if (numArgs > 2) { //only add false jump if there is a false condition if (numArgs > 2) { //only add false jump if there is a false condition
//second goto to skip past the function ptg //second goto to skip past the function ptg
AttrPtg goto2Ptg = new AttrPtg(); AttrPtg goto2Ptg = new AttrPtg();
goto2Ptg.setGoto(true); goto2Ptg.setGoto(true);
goto2Ptg.setData((short)(retval.getSize()-1)); goto2Ptg.setData((short)(retval.getSize()-1));
//Page 472 of the Microsoft Excel Developer's kit states that: //Page 472 of the Microsoft Excel Developer's kit states that:
//The b(or w) field specifies the number byes (or words to skip, minus 1 //The b(or w) field specifies the number byes (or words to skip, minus 1
tokens.add(goto2Ptg); //this goes after all the arguments are defined tokens.add(goto2Ptg); //this goes after all the arguments are defined
} }
//data portion of the if ptg points to the false subexpression (Page 472 of MS Excel Developer's kit) //data portion of the if ptg points to the false subexpression (Page 472 of MS Excel Developer's kit)
//count the number of bytes after the ifPtg to the False Subexpression //count the number of bytes after the ifPtg to the False Subexpression
//doesn't specify -1 in the documentation //doesn't specify -1 in the documentation
ifPtg.setData((short)(getPtgSize(ifIndex+1, gotoIndex))); ifPtg.setData((short)(getPtgSize(ifIndex+1, gotoIndex)));
//count all the additional (goto) ptgs but dont count itself //count all the additional (goto) ptgs but dont count itself
int ptgCount = this.getPtgSize(gotoIndex)-goto1Ptg.getSize()+retval.getSize(); int ptgCount = this.getPtgSize(gotoIndex)-goto1Ptg.getSize()+retval.getSize();
if (ptgCount > (int)Short.MAX_VALUE) { if (ptgCount > (int)Short.MAX_VALUE) {
throw new RuntimeException("Ptg Size exceeds short when being specified for a goto ptg in an if"); throw new RuntimeException("Ptg Size exceeds short when being specified for a goto ptg in an if");
} }
goto1Ptg.setData((short)(ptgCount-1)); goto1Ptg.setData((short)(ptgCount-1));
} else { } else {
retval = new FuncVarPtg(name,numArgs); retval = new FuncVarPtg(name,numArgs);
} }
return retval; return retval;
} }
/** get arguments to a function */ /** get arguments to a function */
@ -543,13 +525,16 @@ public class FormulaParser {
/** Parse and Translate a Math Term */ /** Parse and Translate a Math Term */
private void Term(){ private void Term(){
Factor(); Factor();
while (look == '*' || look == '/' || look == '^' || look == '&' || look == '=' ) { while (look == '*' || look == '/' || look == '^' || look == '&' ||
look == '=' || look == '>' || look == '<' ) {
///TODO do we need to do anything here?? ///TODO do we need to do anything here??
if (look == '*') Multiply(); if (look == '*') Multiply();
if (look == '/') Divide(); if (look == '/') Divide();
if (look == '^') Power(); if (look == '^') Power();
if (look == '&') Concat(); if (look == '&') Concat();
if (look == '=') Equal(); if (look == '=') Equal();
if (look == '>') GreaterThan();
if (look == '<') LessThan();
} }
} }
@ -579,8 +564,8 @@ public class FormulaParser {
Match('-'); Match('-');
Term(); Term();
tokens.add(new SubtractPtg()); tokens.add(new SubtractPtg());
} }
private void Power() { private void Power() {
Match('^'); Match('^');
Term(); Term();
@ -600,11 +585,27 @@ public class FormulaParser {
if (look == '-') Subtract(); if (look == '-') Subtract();
if (look == '*') Multiply(); if (look == '*') Multiply();
if (look == '/') Divide(); if (look == '/') Divide();
if (look == '>') GreaterThan();
if (look == '<') LessThan();
} }
addArgumentPointer(); addArgumentPointer();
} }
/** Recognize and Translate a Greater Than */
private void GreaterThan() {
Match('>');
Term();
tokens.add(new GreaterThanPtg());
}
/** Recognize and Translate a Less Than */
private void LessThan() {
Match('<');
Term();
tokens.add(new LessThanPtg());
}
//{--------------------------------------------------------------} //{--------------------------------------------------------------}
//{ Parse and Translate an Assignment Statement } //{ Parse and Translate an Assignment Statement }
@ -826,7 +827,8 @@ end;
* Useful for testing * Useful for testing
*/ */
public String toString() { public String toString() {
SheetReferences refs = book.getSheetReferences(); SheetReferences refs = null;
if (book!=null) book.getSheetReferences();
StringBuffer buf = new StringBuffer(); StringBuffer buf = new StringBuffer();
for (int i=0;i<tokens.size();i++) { for (int i=0;i<tokens.size();i++) {
buf.append( ( (Ptg)tokens.get(i)).toFormulaString(refs)); buf.append( ( (Ptg)tokens.get(i)).toFormulaString(refs));

175
src/java/org/apache/poi/hssf/record/formula/GreaterThanPtg.java Normal file
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@ -0,0 +1,175 @@
/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2002 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" and
* "Apache POI" must not be used to endorse or promote products
* derived from this software without prior written permission. For
* written permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* "Apache POI", nor may "Apache" appear in their name, without
* prior written permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
/*
* GreaterThanPtg.java
*
* Created on January 23, 2003, 9:47 AM
*/
package org.apache.poi.hssf.record.formula;
import java.util.List;
import org.apache.poi.hssf.util.SheetReferences;
/**
* Greater than operator PTG ">"
* @author Cameron Riley (criley at ekmail.com)
*/
public class GreaterThanPtg
extends OperationPtg
{
public final static int SIZE = 1;
public final static byte sid = 0x0D;
private final static String GREATERTHAN = ">";
/**
* Constructor. Creates new GreaterThanPtg
*/
public GreaterThanPtg()
{
//deliberately empty
}
/**
* Constructor. Create a new GreaterThanPtg.
* @param data the byte array to have the PTG added to
* @param offset the offset to the PTG to.
*/
public GreaterThanPtg(byte [] data, int offset)
{
//deliberately empty
}
/**
* Write the sid to an array
* @param array the array of bytes to write the sid to
* @param offset the offset to add the sid to
*/
public void writeBytes(byte [] array, int offset)
{
array[ offset + 0 ] = sid;
}
/**
* Get the size of the sid
* @return int the size of the sid in terms of byte additions to an array
*/
public int getSize()
{
return SIZE;
}
/**
* Get the type of PTG for Greater Than
* @return int the identifier for the type
*/
public int getType()
{
return TYPE_BINARY;
}
/**
* Get the number of operands for the Less than operator
* @return int the number of operands
*/
public int getNumberOfOperands()
{
return 2;
}
/**
* Implementation of method from Ptg
* @param refs the Sheet References
*/
public String toFormulaString(SheetReferences refs)
{
return this.GREATERTHAN;
}
/**
* Implementation of method from OperationsPtg
* @param operands a String array of operands
* @return String the Formula as a String
*/
public String toFormulaString(String[] operands)
{
StringBuffer buffer = new StringBuffer();
buffer.append(operands[ 0 ]);
buffer.append(this.GREATERTHAN);
buffer.append(operands[ 1 ]);
return buffer.toString();
}
/**
* Get the default operands class value
* @return byte the Ptg Class Value as a byte from the Ptg Parent object
*/
public byte getDefaultOperandClass()
{
return Ptg.CLASS_VALUE;
}
/**
* Implementation of clone method from Object
* @return Object a clone of this class as an Object
*/
public Object clone()
{
return new GreaterThanPtg();
}
}

185
src/java/org/apache/poi/hssf/record/formula/LessThanPtg.java Normal file
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@ -0,0 +1,185 @@
/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2003 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" and
* "Apache POI" must not be used to endorse or promote products
* derived from this software without prior written permission. For
* written permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* "Apache POI", nor may "Apache" appear in their name, without
* prior written permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
/*
* LessThanPtg.java
*
* Created on January 23, 2003, 9:47 AM
*/
package org.apache.poi.hssf.record.formula;
//JDK
import java.util.List;
//POI
import org.apache.poi.hssf.util.SheetReferences;
/**
* Less than operator PTG "<". The SID is taken from the
* Openoffice.orgs Documentation of the Excel File Format,
* Table 3.5.7
* @author Cameron Riley (criley at ekmail.com)
*/
public class LessThanPtg
extends OperationPtg
{
/** the size of the Ptg */
public final static int SIZE = 1;
/** the sid for the less than operator as hex */
public final static byte sid = 0x09;
/** identifier for LESS THAN char */
private final static String LESSTHAN = "<";
/**
* Constructor. Creates new LessThanPtg
*/
public LessThanPtg()
{
//deliberately empty
}
/**
* Constructor. Create a new LessThanPtg.
* @param data the byte array to have the PTG added to
* @param offset the offset to the PTG to.
*/
public LessThanPtg(byte [] data, int offset)
{
//deliberately empty
}
/**
* Write the sid to an array
* @param array the array of bytes to write the sid to
* @param offset the offset to add the sid to
*/
public void writeBytes(byte[] array, int offset)
{
array[ offset + 0 ] = sid;
}
/**
* Get the size of the sid
* @return int the size of the sid in terms of byte additions to an array
*/
public int getSize()
{
return SIZE;
}
/**
* Get the type of PTG for Less Than
* @return int the identifier for the type
*/
public int getType()
{
return TYPE_BINARY;
}
/**
* Get the number of operands for the Less than operator
* @return int the number of operands
*/
public int getNumberOfOperands()
{
return 2;
}
/**
* Implementation of method from Ptg
* @param refs the Sheet References
*/
public String toFormulaString(SheetReferences refs)
{
return this.LESSTHAN;
}
/**
* Implementation of method from OperationsPtg
* @param operands a String array of operands
* @return String the Formula as a String
*/
public String toFormulaString(String[] operands)
{
StringBuffer buffer = new StringBuffer();
buffer.append(operands[ 0 ]);
buffer.append(this.LESSTHAN);
buffer.append(operands[ 1 ]);
return buffer.toString();
}
/**
* Get the default operands class value
* @return byte the Ptg Class Value as a byte from the Ptg Parent object
*/
public byte getDefaultOperandClass()
{
return Ptg.CLASS_VALUE;
}
/**
* Implementation of clone method from Object
* @return Object a clone of this class as an Object
*/
public Object clone()
{
return new LessThanPtg();
}
}

8
src/java/org/apache/poi/hssf/record/formula/Ptg.java
View File

@ -177,6 +177,14 @@ public abstract class Ptg
retval = new EqualPtg(data, offset); retval = new EqualPtg(data, offset);
break; break;
case GreaterThanPtg.sid:
retval = new GreaterThanPtg(data, offset);
break;
case LessThanPtg.sid:
retval = new LessThanPtg(data, offset);
break;
case ConcatPtg.sid : case ConcatPtg.sid :
retval = new ConcatPtg(data, offset); retval = new ConcatPtg(data, offset);
break; break;

13
src/testcases/org/apache/poi/hssf/model/TestFormulaParser.java
View File

@ -249,7 +249,18 @@ public class TestFormulaParser extends TestCase {
//the PTG order isn't 100% correct but it still works - dmui //the PTG order isn't 100% correct but it still works - dmui
} }
public void testSimpleLogical() {
FormulaParser fp=new FormulaParser("IF(A1<A2,B1,B2)",null);
fp.parse();
Ptg[] ptgs = fp.getRPNPtg();
assertTrue("Ptg array should not be null", ptgs !=null);
assertEquals("Ptg array length", 9, ptgs.length);
assertEquals("3rd Ptg is less than",LessThanPtg.class,ptgs[2].getClass());
}
public static void main(String [] args) { public static void main(String [] args) {
System.out.println("Testing org.apache.poi.hssf.record.formula.FormulaParser"); System.out.println("Testing org.apache.poi.hssf.record.formula.FormulaParser");

30
src/testcases/org/apache/poi/hssf/usermodel/TestFormulas.java
View File

@ -849,6 +849,36 @@ extends TestCase {
in.close(); in.close();
} }
public void testLogicalFormulas()
throws java.io.IOException
{
File file = File.createTempFile("testLogicalFormula",".xls");
FileOutputStream out = new FileOutputStream(file);
HSSFWorkbook wb = new HSSFWorkbook();
HSSFSheet s = wb.createSheet("A");
HSSFRow r = null;
HSSFCell c = null;
r = s.createRow((short)0);
c=r.createCell((short)1); c.setCellFormula("IF(A1<A2,B1,B2)");
wb.write(out);
out.close();
assertTrue("file exists",file.exists());
FileInputStream in = new FileInputStream(file);
wb = new HSSFWorkbook(in);
s = wb.getSheetAt(0);
r = s.getRow(0);
c = r.getCell((short)1);
assertEquals("Formula in cell 1 ","IF(A1<A2,B1,B2)",c.getCellFormula());
in.close();
}
public void testDateFormulas() public void testDateFormulas()
throws java.io.IOException throws java.io.IOException
{ {