/*******************************************************************************
* Copyright (c) 2007, 2015 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
* Matt Carter - bug 180392
* - bug 197679 (Character support completed)
*******************************************************************************/
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.databinding.validation.ValidationStatus;
import org.eclipse.core.internal.databinding.Activator;
import org.eclipse.core.internal.databinding.BindingMessages;
import org.eclipse.core.internal.databinding.ClassLookupSupport;
import org.eclipse.core.internal.databinding.Pair;
import org.eclipse.core.internal.databinding.conversion.CharacterToStringConverter;
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.StringToCharacterConverter;
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_CLASS = "boolean.class"; //$NON-NLS-1$
private static final String SHORT_CLASS = "short.class"; //$NON-NLS-1$
private static final String BYTE_CLASS = "byte.class"; //$NON-NLS-1$
private static final String DOUBLE_CLASS = "double.class"; //$NON-NLS-1$
private static final String FLOAT_CLASS = "float.class"; //$NON-NLS-1$
private static final String INTEGER_CLASS = "int.class"; //$NON-NLS-1$
private static final String LONG_CLASS = "long.class"; //$NON-NLS-1$
private static final String CHARACTER_CLASS = "char.class"; //$NON-NLS-1$
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;
else if (clazz == Character.TYPE)
return Character.class;
return clazz;
}
protected IConverter converter;
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 (Class currentFromClass : supertypeHierarchyFlattened) {
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 synchronized 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();
// Standard and Boxed Types
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.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.Character"), StringToCharacterConverter.toCharacter(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.String", "java.math.BigDecimal"), StringToNumberConverter.toBigDecimal(numberFormat)); //$NON-NLS-1$//$NON-NLS-2$
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.math.BigDecimal", "java.lang.String"), NumberToStringConverter.fromBigDecimal(numberFormat)); //$NON-NLS-1$//$NON-NLS-2$
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.Character", "java.lang.String"), CharacterToStringConverter.fromCharacter(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.class
converterMap
.put(
new Pair("java.lang.String", INTEGER_CLASS), StringToNumberConverter.toInteger(integerFormat, true)); //$NON-NLS-1$
converterMap
.put(
new Pair(INTEGER_CLASS, "java.lang.Integer"), new IdentityConverter(Integer.class, Integer.class)); //$NON-NLS-1$
converterMap
.put(
new Pair(INTEGER_CLASS, "java.lang.Object"), new IdentityConverter(Integer.class, Object.class)); //$NON-NLS-1$
converterMap
.put(
new Pair(INTEGER_CLASS, "java.lang.String"), NumberToStringConverter.fromInteger(integerFormat, true)); //$NON-NLS-1$
// Byte.class
converterMap
.put(
new Pair("java.lang.String", BYTE_CLASS), StringToByteConverter.toByte(integerFormat, true)); //$NON-NLS-1$
converterMap
.put(
new Pair(BYTE_CLASS, "java.lang.Byte"), new IdentityConverter(Byte.class, Byte.class)); //$NON-NLS-1$
converterMap
.put(
new Pair(BYTE_CLASS, "java.lang.String"), IntegerToStringConverter.fromByte(integerFormat, true)); //$NON-NLS-1$
converterMap
.put(
new Pair(BYTE_CLASS, "java.lang.Object"), new IdentityConverter(Byte.class, Object.class)); //$NON-NLS-1$
// Double.class
converterMap
.put(
new Pair("java.lang.String", DOUBLE_CLASS), StringToNumberConverter.toDouble(numberFormat, true)); //$NON-NLS-1$
converterMap
.put(
new Pair(DOUBLE_CLASS, "java.lang.String"), NumberToStringConverter.fromDouble(numberFormat, true)); //$NON-NLS-1$
converterMap
.put(
new Pair(DOUBLE_CLASS, "java.lang.Double"), new IdentityConverter(Double.class, Double.class)); //$NON-NLS-1$
converterMap
.put(
new Pair(DOUBLE_CLASS, "java.lang.Object"), new IdentityConverter(Double.class, Object.class)); //$NON-NLS-1$
// Boolean.class
converterMap
.put(
new Pair("java.lang.String", BOOLEAN_CLASS), "org.eclipse.core.internal.databinding.conversion.StringToBooleanPrimitiveConverter"); //$NON-NLS-1$ //$NON-NLS-2$
converterMap
.put(
new Pair(BOOLEAN_CLASS, "java.lang.Boolean"), new IdentityConverter(Boolean.class, Boolean.class)); //$NON-NLS-1$
converterMap
.put(
new Pair(BOOLEAN_CLASS, "java.lang.String"), new ObjectToStringConverter(Boolean.class)); //$NON-NLS-1$
converterMap
.put(
new Pair(BOOLEAN_CLASS, "java.lang.Object"), new IdentityConverter(Boolean.class, Object.class)); //$NON-NLS-1$
// Float.class
converterMap
.put(
new Pair("java.lang.String", FLOAT_CLASS), StringToNumberConverter.toFloat(numberFormat, true)); //$NON-NLS-1$
converterMap
.put(
new Pair(FLOAT_CLASS, "java.lang.String"), NumberToStringConverter.fromFloat(numberFormat, true)); //$NON-NLS-1$
converterMap
.put(
new Pair(FLOAT_CLASS, "java.lang.Float"), new IdentityConverter(Float.class, Float.class)); //$NON-NLS-1$
converterMap
.put(
new Pair(FLOAT_CLASS, "java.lang.Object"), new IdentityConverter(Float.class, Object.class)); //$NON-NLS-1$
// Short.class
converterMap
.put(
new Pair("java.lang.String", SHORT_CLASS), StringToShortConverter.toShort(integerFormat, true)); //$NON-NLS-1$
converterMap
.put(
new Pair(SHORT_CLASS, "java.lang.Short"), new IdentityConverter(Short.class, Short.class)); //$NON-NLS-1$
converterMap
.put(
new Pair(SHORT_CLASS, "java.lang.String"), IntegerToStringConverter.fromShort(integerFormat, true)); //$NON-NLS-1$
converterMap
.put(
new Pair(SHORT_CLASS, "java.lang.Object"), new IdentityConverter(Short.class, Object.class)); //$NON-NLS-1$
// Long.class
converterMap
.put(
new Pair("java.lang.String", LONG_CLASS), StringToNumberConverter.toLong(integerFormat, true)); //$NON-NLS-1$
converterMap
.put(
new Pair(LONG_CLASS, "java.lang.String"), NumberToStringConverter.fromLong(integerFormat, true)); //$NON-NLS-1$
converterMap
.put(
new Pair(LONG_CLASS, "java.lang.Long"), new IdentityConverter(Long.class, Long.class)); //$NON-NLS-1$
converterMap
.put(
new Pair(LONG_CLASS, "java.lang.Object"), new IdentityConverter(Long.class, Object.class)); //$NON-NLS-1$
// Character.class
converterMap
.put(
new Pair("java.lang.String", CHARACTER_CLASS), StringToCharacterConverter.toCharacter(true)); //$NON-NLS-1$
converterMap
.put(
new Pair(CHARACTER_CLASS, "java.lang.Character"), new IdentityConverter(Character.class, Character.class)); //$NON-NLS-1$
converterMap
.put(
new Pair(CHARACTER_CLASS, "java.lang.String"), CharacterToStringConverter.fromCharacter(true)); //$NON-NLS-1$
converterMap
.put(
new Pair(CHARACTER_CLASS, "java.lang.Object"), new IdentityConverter(Character.class, Object.class)); //$NON-NLS-1$
// Miscellaneous
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.class,
Byte.class, short.class, Short.class, int.class, Integer.class,
long.class, Long.class, BigInteger.class };
private static final Class[] floatClasses = new Class[] { float.class,
Float.class, double.class, 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 (Class fromType : fromTypes) {
if (!fromType.equals(Byte.class) && !fromType.equals(byte.class)) {
String fromName = (fromType.isPrimitive()) ? getKeyForClass(
fromType, null) : fromType.getName();
map
.put(new Pair(fromName, BYTE_CLASS),
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 (Class fromType : fromTypes) {
if (!fromType.equals(Short.class) && !fromType.equals(short.class)) {
String fromName = (fromType.isPrimitive()) ? getKeyForClass(
fromType, null) : fromType.getName();
map
.put(new Pair(fromName, SHORT_CLASS),
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 (Class fromType : fromTypes) {
if (!fromType.equals(Integer.class)
&& !fromType.equals(int.class)) {
String fromName = (fromType.isPrimitive()) ? getKeyForClass(
fromType, null) : fromType.getName();
map.put(new Pair(fromName, INTEGER_CLASS),
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 (Class fromType : fromTypes) {
if (!fromType.equals(Long.class) && !fromType.equals(long.class)) {
String fromName = (fromType.isPrimitive()) ? getKeyForClass(
fromType, null) : fromType.getName();
map
.put(new Pair(fromName, LONG_CLASS),
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 (Class fromType : fromTypes) {
if (!fromType.equals(Float.class) && !fromType.equals(float.class)) {
String fromName = (fromType.isPrimitive()) ? getKeyForClass(
fromType, null) : fromType.getName();
map
.put(new Pair(fromName, FLOAT_CLASS),
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 (Class fromType : fromTypes) {
if (!fromType.equals(Double.class) && !fromType.equals(double.class)) {
String fromName = (fromType.isPrimitive()) ? getKeyForClass(
fromType, null) : fromType.getName();
map.put(new Pair(fromName, DOUBLE_CLASS),
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 (Class fromType : fromTypes) {
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 (Class fromType : fromTypes) {
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(int.class)) {
return INTEGER_CLASS;
} else if (originalClass.equals(byte.class)) {
return BYTE_CLASS;
} else if (originalClass.equals(boolean.class)) {
return BOOLEAN_CLASS;
} else if (originalClass.equals(double.class)) {
return DOUBLE_CLASS;
} else if (originalClass.equals(float.class)) {
return FLOAT_CLASS;
} else if (originalClass.equals(long.class)) {
return LONG_CLASS;
} else if (originalClass.equals(short.class)) {
return SHORT_CLASS;
}
}
return filteredValue.getName();
}
/**
* Returns {@link Boolean#TRUE} if the from type is assignable to the to
* type, or {@link Boolean#FALSE} if it not, or <code>null</code> if
* unknown.
*
* @param fromType
* @param toType
* @return whether fromType is assignable to toType, or <code>null</code>
* if unknown
*/
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;
}
/**
* @param ex
* the exception, that was caught
* @return the validation status
*/
protected IStatus logErrorWhileSettingValue(Exception ex) {
IStatus errorStatus = ValidationStatus
.error(BindingMessages.getString(BindingMessages.VALUEBINDING_ERROR_WHILE_SETTING_VALUE), ex);
Policy.getLog().log(errorStatus);
return errorStatus;
}
/**
* Converts the value from the source type to the destination type.
* <p>
* Default implementation will use the setConverter(IConverter), if one
* exists. If no converter exists no conversion occurs.
* </p>
*
* @param value
* @return the converted value
*/
public Object convert(Object value) {
if (converter != null) {
try {
return converter.convert(value);
} catch (Exception ex) {
Policy.getLog().log(new Status(IStatus.ERROR, Activator.PLUGIN_ID, ex.getMessage(), ex));
}
}
return value;
}
/*
* Default converter implementation, does not perform any conversion.
*/
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;
}
@Override
public Object convert(Object fromObject) {
return fromObject;
}
@Override
public Object getFromType() {
return fromType;
}
@Override
public Object getToType() {
return toType;
}
}
}