/**
* =========================================
* LibFormula : a free Java formula library
* =========================================
*
* Project Info: http://reporting.pentaho.org/libformula/
*
* (C) Copyright 2006-2007, by Pentaho Corporation and Contributors.
*
* This library is free software; you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Foundation;
* either version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
*
* ------------
* $Id: DefaultTypeRegistry.java,v 1.17 2007/06/06 17:07:52 taqua Exp $
* ------------
* (C) Copyright 2006-2007, by Pentaho Corporation.
*/
package org.jfree.formula.typing;
import java.lang.reflect.Method;
import java.math.BigDecimal;
import java.sql.Time;
import java.text.DateFormat;
import java.text.DecimalFormat;
import java.text.DecimalFormatSymbols;
import java.text.NumberFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import org.jfree.formula.FormulaContext;
import org.jfree.formula.LocalizationContext;
import org.jfree.formula.lvalues.TypeValuePair;
import org.jfree.formula.typing.coretypes.AnyType;
import org.jfree.formula.typing.coretypes.DateTimeType;
import org.jfree.formula.typing.coretypes.LogicalType;
import org.jfree.formula.typing.coretypes.NumberType;
import org.jfree.formula.typing.coretypes.TextType;
import org.jfree.formula.util.DateUtil;
import org.jfree.util.Configuration;
import org.jfree.util.ObjectUtilities;
/**
* Creation-Date: 02.11.2006, 12:46:08
*
* @author Thomas Morgner
*/
public class DefaultTypeRegistry implements TypeRegistry
{
private FormulaContext context;
private static final long MILLISECS_PER_DAY = 24 * 60 * 60 * 1000;
private static final BigDecimal ZERO = new BigDecimal(0);
private NumberFormat[] numberFormats;
public DefaultTypeRegistry()
{
}
/**
* Returns an comparator for the given types.
*
* @param type1
* @param type2
* @return
*/
public ExtendedComparator getComparator(final Type type1, final Type type2)
{
final DefaultComparator comparator = new DefaultComparator();
comparator.inititalize(context);
return comparator;
}
/**
* converts the object of the given type into a number. If the object is not
* convertible, a NumberFormatException is thrown. If the given value is null
* or not parsable as number, return null.
*
* @param type1
* @param value
* @return
* @throws NumberFormatException
* if the type cannot be represented as number.
*/
public Number convertToNumber(final Type type1, final Object value)
throws TypeConversionException
{
final LocalizationContext localizationContext = context.getLocalizationContext();
if (value == null)
{
// there's no point in digging deeper - there *is* no value ..
throw new TypeConversionException();
}
if (type1.isFlagSet(Type.NUMERIC_TYPE) || type1.isFlagSet(Type.ANY_TYPE))
{
if (type1.isFlagSet(Type.DATETIME_TYPE)
|| type1.isFlagSet(Type.TIME_TYPE) || type1.isFlagSet(Type.DATE_TYPE)
|| type1.isFlagSet(Type.ANY_TYPE))
{
if (value instanceof Date)
{
final Number serial = DateUtil.toSerialDate((Date) value, localizationContext);
// System.out.println(serial);
final Number ret = DateUtil.normalizeDate(serial, type1);
// System.out.println(ret);
return ret;
}
}
if (value instanceof Number)
{
return (Number) value;
}
}
if (type1.isFlagSet(Type.LOGICAL_TYPE) || type1.isFlagSet(Type.ANY_TYPE))
{
if (value instanceof Boolean)
{
if (Boolean.TRUE.equals(value))
{
return new Integer(1);
}
else
{
return new Integer(0);
}
}
}
if (type1.isFlagSet(Type.TEXT_TYPE) || type1.isFlagSet(Type.ANY_TYPE))
{
final String val = value.toString();
// first, try to parse the value as a big-decimal.
try
{
return new BigDecimal(val);
}
catch (NumberFormatException e)
{
// ignore ..
}
// then checking for datetimes
final Iterator datetimeIterator = localizationContext.getDateFormats(DateTimeType.DATETIME_TYPE).iterator();
while (datetimeIterator.hasNext())
{
final DateFormat df = (DateFormat) datetimeIterator.next();
try
{
final Date date = df.parse(val);
final Number serial = DateUtil.toSerialDate(date, localizationContext);
// return DateUtil.normalizeDate(serial, DateTimeType.TYPE);
return serial;
}
catch (ParseException e)
{
// ignore as well ..
}
}
// then checking for datetimes
final Iterator dateIterator = localizationContext.getDateFormats(DateTimeType.DATE_TYPE).iterator();
while (dateIterator.hasNext())
{
final DateFormat df = (DateFormat) dateIterator.next();
try
{
final Date date = df.parse(val);
final Number serial = DateUtil.toSerialDate(date, localizationContext);
// return DateUtil.normalizeDate(serial, DateType.TYPE);
return serial;
}
catch (ParseException e)
{
// ignore as well ..
}
}
// then checking for datetimes
final Iterator timeIterator = localizationContext
.getDateFormats(DateTimeType.TIME_TYPE).iterator();
while (timeIterator.hasNext())
{
final DateFormat df = (DateFormat) timeIterator.next();
try
{
final Date date = df.parse(val);
final Number serial = DateUtil.toSerialDate(date, localizationContext);
// return DateUtil.normalizeDate(serial, TimeType.TYPE);
return serial;
}
catch (ParseException e)
{
// ignore as well ..
}
}
// then checking for numbers
for (int i = 0; i < numberFormats.length; i++)
{
try
{
final NumberFormat format = numberFormats[i];
return format.parse(val);
}
catch (ParseException e)
{
// ignore ..
}
}
}
throw new TypeConversionException();
}
public void initialize(final Configuration configuration,
final FormulaContext formulaContext)
{
this.context = formulaContext;
this.numberFormats = loadNumberFormats();
}
protected NumberFormat[] loadNumberFormats()
{
final ArrayList formats = new ArrayList();
final DecimalFormat defaultFormat = new DecimalFormat("#0.###",
new DecimalFormatSymbols(Locale.US));
activateBigDecimalMode(defaultFormat);
formats.add(defaultFormat);
return (NumberFormat[]) formats.toArray(new NumberFormat[formats.size()]);
}
private void activateBigDecimalMode(final DecimalFormat format)
{
if (ObjectUtilities.isJDK14())
{
try
{
final Method method = DecimalFormat.class.getMethod(
"setParseBigDecimal", new Class[]
{ Boolean.TYPE });
method.invoke(format, new Object[]
{ Boolean.TRUE });
}
catch (Exception e)
{
// ignore it, as it will always fail on JDK 1.4 or lower ..
}
}
}
public String convertToText(final Type type1, final Object value)
throws TypeConversionException
{
if (value == null)
{
return "";
}
// already converted or compatible
if (type1.isFlagSet(Type.TEXT_TYPE))
{
// no need to check whatever it is a String
return value.toString();
}
if (type1.isFlagSet(Type.LOGICAL_TYPE))
{
if (value instanceof Boolean)
{
final Boolean b = (Boolean) value;
if (Boolean.TRUE.equals(b))
{
return "TRUE";
}
else
{
return "FALSE";
}
}
else
{
throw new TypeConversionException();
}
}
// 2 types of numeric : numbers and dates
if (type1.isFlagSet(Type.NUMERIC_TYPE))
{
if (type1.isFlagSet(Type.DATETIME_TYPE)
|| type1.isFlagSet(Type.DATE_TYPE) || type1.isFlagSet(Type.TIME_TYPE))
{
final Date d = convertToDate(type1, value);
final List dateFormats = context.getLocalizationContext()
.getDateFormats(type1);
if (dateFormats != null && dateFormats.size() >= 1)
{
final DateFormat format = (DateFormat) dateFormats.get(0);
return format.format(d);
}
else
{
// fallback
return SimpleDateFormat.getDateTimeInstance(
SimpleDateFormat.FULL, SimpleDateFormat.FULL).format(d);
}
}
else
{
try
{
final Number n = convertToNumber(type1, value);
final NumberFormat format = getDefaultNumberFormat();
return format.format(n);
}
catch (TypeConversionException nfe)
{
// ignore ..
}
}
}
// fallback
return value.toString();
}
public Boolean convertToLogical(final Type type1, final Object value)
throws TypeConversionException
{
if (value == null)
{
return Boolean.FALSE;
}
// already converted or compatible
if (type1.isFlagSet(Type.LOGICAL_TYPE) || type1.isFlagSet(Type.ANY_TYPE))
{
if (value instanceof Boolean)
{
return (Boolean) value;
}
// fallback
return new Boolean(value.toString());
}
if (type1.isFlagSet(Type.NUMERIC_TYPE))
{
// no need to check between different types of numeric
if (value instanceof Number)
{
final Number num = (Number) value;
if (!ZERO.equals(num))
{
return Boolean.TRUE;
}
}
// fallback
return Boolean.FALSE;
}
if (type1.isFlagSet(Type.TEXT_TYPE))
{
// no need to convert it to String
final String str = value.toString();
if ("TRUE".equalsIgnoreCase(str))
{
return Boolean.TRUE;
}
else if ("FALSE".equalsIgnoreCase(str))
{
return Boolean.FALSE;
}
}
throw new TypeConversionException();
}
public Date convertToDate(final Type type1, final Object value)
throws TypeConversionException
{
if (type1.isFlagSet(Type.NUMERIC_TYPE) || type1.isFlagSet(Type.ANY_TYPE))
{
if (type1.isFlagSet(Type.DATE_TYPE)
|| type1.isFlagSet(Type.DATETIME_TYPE)
|| type1.isFlagSet(Type.TIME_TYPE) || type1.isFlagSet(Type.ANY_TYPE))
{
if (value instanceof Date)
{
return DateUtil.normalizeDate((Date) value, type1);
}
}
}
final Number serial = convertToNumber(type1, value);
return DateUtil.toJavaDate(serial, context.getLocalizationContext());
}
protected NumberFormat getDefaultNumberFormat()
{
final Locale locale = context.getLocalizationContext().getLocale();
return new DecimalFormat("#0.#########", new DecimalFormatSymbols(locale));
}
/**
* Checks, whether the target type would accept the specified value object and
* value type.<br/> This method is called for auto conversion of fonction
* parameters using the conversion type declared by the function metadata.
*
* @param targetType
* @param valueType
* @param value
*/
public TypeValuePair convertTo(final Type targetType,
final TypeValuePair valuePair) throws TypeConversionException
{
if (targetType.isFlagSet(Type.ARRAY_TYPE))
{
// Array conversion requested.
if (valuePair.getType().isFlagSet(Type.ARRAY_TYPE))
{
return convertArrayToArray(targetType, valuePair);
}
else
{
final Object retval = convertPlainToPlain(targetType, valuePair
.getType(), valuePair.getValue());
return new TypeValuePair(targetType, new Object[]
{ retval });
}
}
final Object value = valuePair.getValue();
final Object o = convertPlainToPlain(targetType, valuePair.getType(), value);
if (value == o)
{
return valuePair;
}
return new TypeValuePair(targetType, o);
}
private Object convertPlainToPlain(final Type targetType, final Type type,
final Object value) throws TypeConversionException
{
// lazy check
// if (targetType.equals(type))
// {
// return value;
// }
if (targetType.isFlagSet(Type.NUMERIC_TYPE))
{
final Number serial = convertToNumber(type, value);
if (targetType.isFlagSet(Type.DATE_TYPE)
|| targetType.isFlagSet(Type.DATETIME_TYPE)
|| targetType.isFlagSet(Type.TIME_TYPE))
{
final Number normalizedSerial = DateUtil.normalizeDate(serial,
targetType);
final Date toJavaDate = DateUtil.toJavaDate(normalizedSerial, context
.getLocalizationContext());
return DateUtil.normalizeDate(toJavaDate, targetType, false);
}
return serial;
}
else if (targetType.isFlagSet(Type.LOGICAL_TYPE))
{
if (type.isFlagSet(Type.LOGICAL_TYPE))
{
return value;
}
return convertToLogical(type, value);
}
else if (targetType.isFlagSet(Type.TEXT_TYPE))
{
return convertToText(type, value);
}
// Unknown type - ignore it, crash later :)
return value;
}
private TypeValuePair convertArrayToArray(final Type targetType,
final TypeValuePair pair) throws TypeConversionException
{
final Type type = pair.getType();
// the pair value is also an array ...
final Object[] array = (Object[]) pair.getValue();
final Object[] target = new Object[array.length];
for (int i = 0; i < array.length; i++)
{
final Object converted = convertPlainToPlain(targetType, type, array[i]);
if (converted == null)
{
return null;
}
target[i] = converted;
}
return new TypeValuePair(targetType, target);
}
public Type guessTypeOfObject(Object o)
{
if (o instanceof Number)
{
return NumberType.GENERIC_NUMBER;
}
else if (o instanceof Date)
{
return DateTimeType.DATETIME_TYPE;
}
else if (o instanceof Time)
{
return DateTimeType.TIME_TYPE;
}
else if (o instanceof java.sql.Date)
{
return DateTimeType.DATE_TYPE;
}
else if (o instanceof Boolean)
{
return LogicalType.TYPE;
}
else if (o instanceof String)
{
return TextType.TYPE;
}
return AnyType.TYPE;
}
}