/*******************************************************************************
* Copyright (c) 2007 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
******************************************************************************/
package org.eclipse.core.databinding;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.HashMap;
import java.util.Map;
import org.eclipse.core.databinding.conversion.IConverter;
import org.eclipse.core.databinding.conversion.NumberToStringConverter;
import org.eclipse.core.databinding.conversion.StringToNumberConverter;
import org.eclipse.core.databinding.util.Policy;
import org.eclipse.core.internal.databinding.ClassLookupSupport;
import org.eclipse.core.internal.databinding.Pair;
import org.eclipse.core.internal.databinding.conversion.IdentityConverter;
import org.eclipse.core.internal.databinding.conversion.IntegerToStringConverter;
import org.eclipse.core.internal.databinding.conversion.NumberToBigDecimalConverter;
import org.eclipse.core.internal.databinding.conversion.NumberToBigIntegerConverter;
import org.eclipse.core.internal.databinding.conversion.NumberToByteConverter;
import org.eclipse.core.internal.databinding.conversion.NumberToDoubleConverter;
import org.eclipse.core.internal.databinding.conversion.NumberToFloatConverter;
import org.eclipse.core.internal.databinding.conversion.NumberToIntegerConverter;
import org.eclipse.core.internal.databinding.conversion.NumberToLongConverter;
import org.eclipse.core.internal.databinding.conversion.NumberToShortConverter;
import org.eclipse.core.internal.databinding.conversion.ObjectToStringConverter;
import org.eclipse.core.internal.databinding.conversion.StringToByteConverter;
import org.eclipse.core.internal.databinding.conversion.StringToShortConverter;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import com.ibm.icu.text.NumberFormat;
/**
* @since 1.0
*
*/
/* package */class UpdateStrategy {
private static final String BOOLEAN_TYPE = "java.lang.Boolean.TYPE"; //$NON-NLS-1$
private static final String SHORT_TYPE = "java.lang.Short.TYPE"; //$NON-NLS-1$
private static final String BYTE_TYPE = "java.lang.Byte.TYPE"; //$NON-NLS-1$
private static final String DOUBLE_TYPE = "java.lang.Double.TYPE"; //$NON-NLS-1$
private static final String FLOAT_TYPE = "java.lang.Float.TYPE"; //$NON-NLS-1$
private static final String INTEGER_TYPE = "java.lang.Integer.TYPE"; //$NON-NLS-1$
private static final String LONG_TYPE = "java.lang.Long.TYPE"; //$NON-NLS-1$
private static Map converterMap;
private static Class autoboxed(Class clazz) {
if (clazz == Float.TYPE)
return Float.class;
else if (clazz == Double.TYPE)
return Double.class;
else if (clazz == Short.TYPE)
return Short.class;
else if (clazz == Integer.TYPE)
return Integer.class;
else if (clazz == Long.TYPE)
return Long.class;
else if (clazz == Byte.TYPE)
return Byte.class;
else if (clazz == Boolean.TYPE)
return Boolean.class;
return clazz;
}
final protected void checkAssignable(Object toType, Object fromType,
String errorString) {
Boolean assignableFromModelToModelConverter = isAssignableFromTo(
fromType, toType);
if (assignableFromModelToModelConverter != null
&& !assignableFromModelToModelConverter.booleanValue()) {
throw new BindingException(errorString
+ " Expected: " + fromType + ", actual: " + toType); //$NON-NLS-1$//$NON-NLS-2$
}
}
/**
* Tries to create a converter that can convert from values of type
* fromType. Returns <code>null</code> if no converter could be created.
* Either toType or modelDescription can be <code>null</code>, but not
* both.
*
* @param fromType
* @param toType
* @return an IConverter, or <code>null</code> if unsuccessful
*/
protected IConverter createConverter(Object fromType, Object toType) {
if (!(fromType instanceof Class) || !(toType instanceof Class)) {
return new DefaultConverter(fromType, toType);
}
Class toClass = (Class) toType;
Class originalToClass = toClass;
if (toClass.isPrimitive()) {
toClass = autoboxed(toClass);
}
Class fromClass = (Class) fromType;
Class originalFromClass = fromClass;
if (fromClass.isPrimitive()) {
fromClass = autoboxed(fromClass);
}
if (!((Class) toType).isPrimitive()
&& toClass.isAssignableFrom(fromClass)) {
return new IdentityConverter(originalFromClass, originalToClass);
}
if (((Class) fromType).isPrimitive() && ((Class) toType).isPrimitive()
&& fromType.equals(toType)) {
return new IdentityConverter(originalFromClass, originalToClass);
}
Map converterMap = getConverterMap();
Class[] supertypeHierarchyFlattened = ClassLookupSupport
.getTypeHierarchyFlattened(fromClass);
for (int i = 0; i < supertypeHierarchyFlattened.length; i++) {
Class currentFromClass = supertypeHierarchyFlattened[i];
if (currentFromClass == toType) {
// converting to toType is just a widening
return new IdentityConverter(fromClass, toClass);
}
Pair key = new Pair(getKeyForClass(fromType, currentFromClass),
getKeyForClass(toType, toClass));
Object converterOrClassname = converterMap.get(key);
if (converterOrClassname instanceof IConverter) {
return (IConverter) converterOrClassname;
} else if (converterOrClassname instanceof String) {
String classname = (String) converterOrClassname;
Class converterClass;
try {
converterClass = Class.forName(classname);
IConverter result = (IConverter) converterClass
.newInstance();
converterMap.put(key, result);
return result;
} catch (Exception e) {
Policy
.getLog()
.log(
new Status(
IStatus.ERROR,
Policy.JFACE_DATABINDING,
0,
"Error while instantiating default converter", e)); //$NON-NLS-1$
}
}
}
// Since we found no converter yet, try a "downcast" converter;
// the IdentityConverter will automatically check the actual types at
// runtime.
if (fromClass.isAssignableFrom(toClass)) {
return new IdentityConverter(originalFromClass, originalToClass);
}
return new DefaultConverter(fromType, toType);
}
private static Map getConverterMap() {
// using string-based lookup avoids loading of too many classes
if (converterMap == null) {
//NumberFormat to be shared across converters for the formatting of integer values
NumberFormat integerFormat = NumberFormat.getIntegerInstance();
//NumberFormat to be shared across converters for formatting non integer values
NumberFormat numberFormat = NumberFormat.getNumberInstance();
converterMap = new HashMap();
converterMap
.put(
new Pair("java.util.Date", "java.lang.String"), "org.eclipse.core.internal.databinding.conversion.DateToStringConverter"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
converterMap
.put(
new Pair("java.lang.String", "java.lang.Boolean"), "org.eclipse.core.internal.databinding.conversion.StringToBooleanConverter"); //$NON-NLS-1$//$NON-NLS-2$ //$NON-NLS-3$
converterMap
.put(
new Pair("java.lang.String", "java.lang.Byte"), StringToByteConverter.toByte(integerFormat, false)); //$NON-NLS-1$//$NON-NLS-2$
converterMap
.put(
new Pair("java.lang.String", "java.lang.Character"), "org.eclipse.core.internal.databinding.conversion.StringToCharacterConverter"); //$NON-NLS-1$//$NON-NLS-2$ //$NON-NLS-3$
converterMap
.put(
new Pair("java.lang.String", "java.util.Date"), "org.eclipse.core.internal.databinding.conversion.StringToDateConverter"); //$NON-NLS-1$//$NON-NLS-2$ //$NON-NLS-3$
converterMap
.put(
new Pair("java.lang.String", "java.lang.Short"), StringToShortConverter.toShort(integerFormat, false)); //$NON-NLS-1$//$NON-NLS-2$
converterMap.put(new Pair("java.lang.String", "java.lang.Integer"), StringToNumberConverter.toInteger(integerFormat, false)); //$NON-NLS-1$//$NON-NLS-2$
converterMap.put(new Pair("java.lang.String", "java.lang.Double"), StringToNumberConverter.toDouble(numberFormat, false)); //$NON-NLS-1$//$NON-NLS-2$
converterMap.put(new Pair("java.lang.String", "java.lang.Long"), StringToNumberConverter.toLong(integerFormat, false)); //$NON-NLS-1$//$NON-NLS-2$
converterMap.put(new Pair("java.lang.String", "java.lang.Float"), StringToNumberConverter.toFloat(numberFormat, false)); //$NON-NLS-1$//$NON-NLS-2$
converterMap.put(new Pair("java.lang.String", "java.math.BigInteger"), StringToNumberConverter.toBigInteger(integerFormat)); //$NON-NLS-1$//$NON-NLS-2$
converterMap.put(new Pair("java.lang.Integer", "java.lang.String"), NumberToStringConverter.fromInteger(integerFormat, false)); //$NON-NLS-1$//$NON-NLS-2$
converterMap.put(new Pair("java.lang.Long", "java.lang.String"), NumberToStringConverter.fromLong(integerFormat, false)); //$NON-NLS-1$//$NON-NLS-2$
converterMap.put(new Pair("java.lang.Double", "java.lang.String"), NumberToStringConverter.fromDouble(numberFormat, false)); //$NON-NLS-1$//$NON-NLS-2$
converterMap.put(new Pair("java.lang.Float", "java.lang.String"), NumberToStringConverter.fromFloat(numberFormat, false)); //$NON-NLS-1$//$NON-NLS-2$
converterMap.put(new Pair("java.math.BigInteger", "java.lang.String"), NumberToStringConverter.fromBigInteger(integerFormat)); //$NON-NLS-1$//$NON-NLS-2$
converterMap.put(new Pair("java.lang.Byte", "java.lang.String"), IntegerToStringConverter.fromByte(integerFormat, false)); //$NON-NLS-1$//$NON-NLS-2$
converterMap.put(new Pair("java.lang.Short", "java.lang.String"), IntegerToStringConverter.fromShort(integerFormat, false)); //$NON-NLS-1$//$NON-NLS-2$
converterMap
.put(
new Pair("java.lang.Object", "java.lang.String"), "org.eclipse.core.internal.databinding.conversion.ObjectToStringConverter"); //$NON-NLS-1$//$NON-NLS-2$ //$NON-NLS-3$
// Integer.TYPE
converterMap.put(new Pair("java.lang.String", INTEGER_TYPE), StringToNumberConverter.toInteger(integerFormat, true)); //$NON-NLS-1$
converterMap
.put(
new Pair(INTEGER_TYPE, "java.lang.Integer"), new IdentityConverter(Integer.TYPE, Integer.class)); //$NON-NLS-1$
converterMap
.put(
new Pair(INTEGER_TYPE, "java.lang.Object"), new IdentityConverter(Integer.TYPE, Object.class)); //$NON-NLS-1$
converterMap.put(new Pair(INTEGER_TYPE, "java.lang.String"), NumberToStringConverter.fromInteger(integerFormat, true)); //$NON-NLS-1$
// Byte.TYPE
converterMap
.put(
new Pair("java.lang.String", BYTE_TYPE), StringToByteConverter.toByte(integerFormat, true)); //$NON-NLS-1$
converterMap
.put(
new Pair(BYTE_TYPE, "java.lang.Byte"), new IdentityConverter(Byte.TYPE, Byte.class)); //$NON-NLS-1$
converterMap
.put(
new Pair(BYTE_TYPE, "java.lang.String"), IntegerToStringConverter.fromByte(integerFormat, true)); //$NON-NLS-1$
converterMap
.put(
new Pair(BYTE_TYPE, "java.lang.Object"), new IdentityConverter(Byte.TYPE, Object.class)); //$NON-NLS-1$
// Double.TYPE
converterMap.put(new Pair("java.lang.String", DOUBLE_TYPE), StringToNumberConverter.toDouble(numberFormat, true)); //$NON-NLS-1$
converterMap.put(new Pair(DOUBLE_TYPE, "java.lang.String"), NumberToStringConverter.fromDouble(numberFormat, true)); //$NON-NLS-1$
converterMap
.put(
new Pair(DOUBLE_TYPE, "java.lang.Double"), new IdentityConverter(Double.TYPE, Double.class)); //$NON-NLS-1$
converterMap
.put(
new Pair(DOUBLE_TYPE, "java.lang.Object"), new IdentityConverter(Double.TYPE, Object.class)); //$NON-NLS-1$
// Boolean.TYPE
converterMap
.put(
new Pair("java.lang.String", BOOLEAN_TYPE), "org.eclipse.core.internal.databinding.conversion.StringToBooleanPrimitiveConverter"); //$NON-NLS-1$ //$NON-NLS-2$
converterMap
.put(
new Pair(BOOLEAN_TYPE, "java.lang.Boolean"), new IdentityConverter(Boolean.TYPE, Boolean.class)); //$NON-NLS-1$
converterMap
.put(
new Pair(BOOLEAN_TYPE, "java.lang.String"), new ObjectToStringConverter(Boolean.TYPE)); //$NON-NLS-1$
converterMap
.put(
new Pair(BOOLEAN_TYPE, "java.lang.Object"), new IdentityConverter(Boolean.TYPE, Object.class)); //$NON-NLS-1$
// Float.TYPE
converterMap.put(new Pair("java.lang.String", FLOAT_TYPE), StringToNumberConverter.toFloat(numberFormat, true)); //$NON-NLS-1$
converterMap.put(new Pair(FLOAT_TYPE, "java.lang.String"), NumberToStringConverter.fromFloat(numberFormat, true)); //$NON-NLS-1$
converterMap
.put(
new Pair(FLOAT_TYPE, "java.lang.Float"), new IdentityConverter(Float.TYPE, Float.class)); //$NON-NLS-1$
converterMap
.put(
new Pair(FLOAT_TYPE, "java.lang.Object"), new IdentityConverter(Float.TYPE, Object.class)); //$NON-NLS-1$
// Short.TYPE
converterMap
.put(
new Pair("java.lang.String", SHORT_TYPE), StringToShortConverter.toShort(integerFormat, true)); //$NON-NLS-1$
converterMap
.put(
new Pair(SHORT_TYPE, "java.lang.Short"), new IdentityConverter(Short.TYPE, Short.class)); //$NON-NLS-1$
converterMap
.put(
new Pair(SHORT_TYPE, "java.lang.String"), IntegerToStringConverter.fromShort(integerFormat, true)); //$NON-NLS-1$
converterMap
.put(
new Pair(SHORT_TYPE, "java.lang.Object"), new IdentityConverter(Short.TYPE, Object.class)); //$NON-NLS-1$
// Long.TYPE
converterMap.put(new Pair("java.lang.String", LONG_TYPE), StringToNumberConverter.toLong(integerFormat, true)); //$NON-NLS-1$
converterMap.put(new Pair(LONG_TYPE, "java.lang.String"), NumberToStringConverter.fromLong(integerFormat, true)); //$NON-NLS-1$
converterMap
.put(
new Pair(LONG_TYPE, "java.lang.Long"), new IdentityConverter(Long.TYPE, Long.class)); //$NON-NLS-1$
converterMap
.put(
new Pair(LONG_TYPE, "java.lang.Object"), new IdentityConverter(Long.TYPE, Object.class)); //$NON-NLS-1$
converterMap
.put(
new Pair("org.eclipse.core.runtime.IStatus", "java.lang.String"), "org.eclipse.core.internal.databinding.conversion.StatusToStringConverter"); //$NON-NLS-1$//$NON-NLS-2$ //$NON-NLS-3$
addNumberToByteConverters(converterMap, integerFormat, integerClasses);
addNumberToByteConverters(converterMap, numberFormat, floatClasses);
addNumberToShortConverters(converterMap, integerFormat, integerClasses);
addNumberToShortConverters(converterMap, numberFormat, floatClasses);
addNumberToIntegerConverters(converterMap, integerFormat, integerClasses);
addNumberToIntegerConverters(converterMap, numberFormat, floatClasses);
addNumberToLongConverters(converterMap, integerFormat, integerClasses);
addNumberToLongConverters(converterMap, numberFormat, floatClasses);
addNumberToFloatConverters(converterMap, integerFormat, integerClasses);
addNumberToFloatConverters(converterMap, numberFormat, floatClasses);
addNumberToDoubleConverters(converterMap, integerFormat, integerClasses);
addNumberToDoubleConverters(converterMap, numberFormat, floatClasses);
addNumberToBigIntegerConverters(converterMap, integerFormat, integerClasses);
addNumberToBigIntegerConverters(converterMap, numberFormat, floatClasses);
addNumberToBigDecimalConverters(converterMap, integerFormat, integerClasses);
addNumberToBigDecimalConverters(converterMap, numberFormat, floatClasses);
}
return converterMap;
}
private static final Class[] integerClasses = new Class[]{
Byte.TYPE, Byte.class,
Short.TYPE, Short.class,
Integer.TYPE, Integer.class,
Long.TYPE, Long.class,
BigInteger.class};
private static final Class[] floatClasses = new Class[] {
Float.TYPE, Float.class,
Double.TYPE, Double.class,
BigDecimal.class};
/**
* Registers converters to boxed and unboxed types from a list of from classes.
*
* @param map
* @param numberFormat
* @param fromTypes
*/
private static void addNumberToByteConverters(Map map,
NumberFormat numberFormat, Class[] fromTypes) {
for (int i = 0; i < fromTypes.length; i++) {
Class fromType = fromTypes[i];
if (!fromType.equals(Byte.class) && !fromType.equals(Byte.TYPE)) {
String fromName = (fromType.isPrimitive()) ? getKeyForClass(fromType, null) : fromType.getName();
map.put(new Pair(fromName, BYTE_TYPE), new NumberToByteConverter(numberFormat, fromType, true));
map.put(new Pair(fromName, Byte.class.getName()), new NumberToByteConverter(numberFormat, fromType, false));
}
}
}
/**
* Registers converters to boxed and unboxed types from a list of from classes.
*
* @param map
* @param numberFormat
* @param fromTypes
*/
private static void addNumberToShortConverters(Map map, NumberFormat numberFormat, Class[] fromTypes) {
for (int i = 0; i < fromTypes.length; i++) {
Class fromType = fromTypes[i];
if (!fromType.equals(Short.class) && !fromType.equals(Short.TYPE)) {
String fromName = (fromType.isPrimitive()) ? getKeyForClass(fromType, null) : fromType.getName();
map.put(new Pair(fromName, SHORT_TYPE), new NumberToShortConverter(numberFormat, fromType, true));
map.put(new Pair(fromName, Short.class.getName()), new NumberToShortConverter(numberFormat, fromType, false));
}
}
}
/**
* Registers converters to boxed and unboxed types from a list of from classes.
*
* @param map
* @param numberFormat
* @param fromTypes
*/
private static void addNumberToIntegerConverters(Map map, NumberFormat numberFormat, Class[] fromTypes) {
for (int i = 0; i < fromTypes.length; i++) {
Class fromType = fromTypes[i];
if (!fromType.equals(Integer.class) && !fromType.equals(Integer.TYPE)) {
String fromName = (fromType.isPrimitive()) ? getKeyForClass(fromType, null) : fromType.getName();
map.put(new Pair(fromName, INTEGER_TYPE), new NumberToIntegerConverter(numberFormat, fromType, true));
map.put(new Pair(fromName, Integer.class.getName()), new NumberToIntegerConverter(numberFormat, fromType, false));
}
}
}
/**
* Registers converters to boxed and unboxed types from a list of from classes.
*
* @param map
* @param numberFormat
* @param fromTypes
*/
private static void addNumberToLongConverters(Map map, NumberFormat numberFormat, Class[] fromTypes) {
for (int i = 0; i < fromTypes.length; i++) {
Class fromType = fromTypes[i];
if (!fromType.equals(Long.class) && !fromType.equals(Long.TYPE)) {
String fromName = (fromType.isPrimitive()) ? getKeyForClass(fromType, null) : fromType.getName();
map.put(new Pair(fromName, LONG_TYPE), new NumberToLongConverter(numberFormat, fromType, true));
map.put(new Pair(fromName, Long.class.getName()), new NumberToLongConverter(numberFormat, fromType, false));
}
}
}
/**
* Registers converters to boxed and unboxed types from a list of from classes.
*
* @param map
* @param numberFormat
* @param fromTypes
*/
private static void addNumberToFloatConverters(Map map, NumberFormat numberFormat, Class[] fromTypes) {
for (int i = 0; i < fromTypes.length; i++) {
Class fromType = fromTypes[i];
if (!fromType.equals(Float.class) && !fromType.equals(Float.TYPE)) {
String fromName = (fromType.isPrimitive()) ? getKeyForClass(fromType, null) : fromType.getName();
map.put(new Pair(fromName, FLOAT_TYPE), new NumberToFloatConverter(numberFormat, fromType, true));
map.put(new Pair(fromName, Float.class.getName()), new NumberToFloatConverter(numberFormat, fromType, false));
}
}
}
/**
* Registers converters to boxed and unboxed types from a list of from classes.
*
* @param map
* @param numberFormat
* @param fromTypes
*/
private static void addNumberToDoubleConverters(Map map, NumberFormat numberFormat, Class[] fromTypes) {
for (int i = 0; i < fromTypes.length; i++) {
Class fromType = fromTypes[i];
if (!fromType.equals(Double.class) && !fromType.equals(Double.TYPE)) {
String fromName = (fromType.isPrimitive()) ? getKeyForClass(fromType, null) : fromType.getName();
map.put(new Pair(fromName, DOUBLE_TYPE), new NumberToDoubleConverter(numberFormat, fromType, true));
map.put(new Pair(fromName, Double.class.getName()), new NumberToDoubleConverter(numberFormat, fromType, false));
}
}
}
/**
* Registers converters to boxed and unboxed types from a list of from classes.
*
* @param map
* @param numberFormat
* @param fromTypes
*/
private static void addNumberToBigIntegerConverters(Map map, NumberFormat numberFormat, Class[] fromTypes) {
for (int i = 0; i < fromTypes.length; i++) {
Class fromType = fromTypes[i];
if (!fromType.equals(BigInteger.class)) {
String fromName = (fromType.isPrimitive()) ? getKeyForClass(fromType, null) : fromType.getName();
map.put(new Pair(fromName, BigInteger.class.getName()), new NumberToBigIntegerConverter(numberFormat, fromType));
}
}
}
/**
* Registers converters to boxed and unboxed types from a list of from classes.
*
* @param map
* @param numberFormat
* @param fromTypes
*/
private static void addNumberToBigDecimalConverters(Map map, NumberFormat numberFormat, Class[] fromTypes) {
for (int i = 0; i < fromTypes.length; i++) {
Class fromType = fromTypes[i];
if (!fromType.equals(BigDecimal.class)) {
String fromName = (fromType.isPrimitive()) ? getKeyForClass(fromType, null) : fromType.getName();
map.put(new Pair(fromName, BigDecimal.class.getName()), new NumberToBigDecimalConverter(numberFormat, fromType));
}
}
}
private static String getKeyForClass(Object originalValue, Class filteredValue) {
if (originalValue instanceof Class) {
Class originalClass = (Class) originalValue;
if (originalClass.equals(Integer.TYPE)) {
return INTEGER_TYPE;
} else if (originalClass.equals(Byte.TYPE)) {
return BYTE_TYPE;
} else if (originalClass.equals(Boolean.TYPE)) {
return BOOLEAN_TYPE;
} else if (originalClass.equals(Double.TYPE)) {
return DOUBLE_TYPE;
} else if (originalClass.equals(Float.TYPE)) {
return FLOAT_TYPE;
} else if (originalClass.equals(Long.TYPE)) {
return LONG_TYPE;
} else if (originalClass.equals(Short.TYPE)) {
return SHORT_TYPE;
}
}
return filteredValue.getName();
}
/**
* @param fromType
* @param toType
* @return whether fromType is assignable to toType
*/
protected Boolean isAssignableFromTo(Object fromType, Object toType) {
if (fromType instanceof Class && toType instanceof Class) {
Class toClass = (Class) toType;
if (toClass.isPrimitive()) {
toClass = autoboxed(toClass);
}
Class fromClass = (Class) fromType;
if (fromClass.isPrimitive()) {
fromClass = autoboxed(fromClass);
}
return toClass.isAssignableFrom(fromClass) ? Boolean.TRUE
: Boolean.FALSE;
}
return null;
}
/*
* Default converter implementation, does not perform any conversion.
*/
protected static final class DefaultConverter implements IConverter {
private final Object toType;
private final Object fromType;
/**
* @param fromType
* @param toType
*/
DefaultConverter(Object fromType, Object toType) {
this.toType = toType;
this.fromType = fromType;
}
public Object convert(Object fromObject) {
return fromObject;
}
public Object getFromType() {
return fromType;
}
public Object getToType() {
return toType;
}
}
}