com.vaadin.data.util.converter.DefaultConverterFactory Maven / Gradle / Ivy
/*
* Vaadin Framework 7
*
* Copyright (C) 2000-2024 Vaadin Ltd
*
* This program is available under Vaadin Commercial License and Service Terms.
*
* See for the full
* license.
*/
package com.vaadin.data.util.converter;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.Date;
import java.util.logging.Logger;
import com.vaadin.server.VaadinSession;
/**
* Default implementation of {@link ConverterFactory}. Provides converters for
* standard types like {@link String}, {@link Double} and {@link Date}.
*
*
* Custom converters can be provided by extending this class and using
* {@link VaadinSession#setConverterFactory(ConverterFactory)}.
*
*
* @author Vaadin Ltd
* @since 7.0
*/
public class DefaultConverterFactory implements ConverterFactory {
private final static Logger log = Logger
.getLogger(DefaultConverterFactory.class.getName());
@Override
public Converter createConverter(
Class presentationType, Class modelType) {
Converter converter = findConverter(
presentationType, modelType);
if (converter != null) {
log.finest(getClass().getName() + " created a "
+ converter.getClass());
return converter;
}
// Try to find a reverse converter
Converter reverseConverter = findConverter(
modelType, presentationType);
if (reverseConverter != null) {
log.finest(getClass().getName() + " created a reverse "
+ reverseConverter.getClass());
return new ReverseConverter(reverseConverter);
}
log.finest(getClass().getName() + " could not find a converter for "
+ presentationType.getName() + " to " + modelType.getName()
+ " conversion");
return null;
}
protected Converter findConverter(
Class presentationType, Class modelType) {
if (presentationType == String.class) {
// TextField converters and more
Converter converter = (Converter) createStringConverter(
modelType);
if (converter != null) {
return converter;
}
} else if (presentationType == Date.class) {
// DateField converters and more
Converter converter = (Converter) createDateConverter(
modelType);
if (converter != null) {
return converter;
}
}
return null;
}
protected Converter createDateConverter(Class sourceType) {
if (Long.class.isAssignableFrom(sourceType)) {
return new DateToLongConverter();
} else if (java.sql.Date.class.isAssignableFrom(sourceType)) {
return new DateToSqlDateConverter();
} else {
return null;
}
}
protected Converter createStringConverter(Class sourceType) {
if (Double.class.isAssignableFrom(sourceType)) {
return new StringToDoubleConverter();
} else if (Float.class.isAssignableFrom(sourceType)) {
return new StringToFloatConverter();
} else if (Integer.class.isAssignableFrom(sourceType)) {
return new StringToIntegerConverter();
} else if (Long.class.isAssignableFrom(sourceType)) {
return new StringToLongConverter();
} else if (BigDecimal.class.isAssignableFrom(sourceType)) {
return new StringToBigDecimalConverter();
} else if (Boolean.class.isAssignableFrom(sourceType)) {
return new StringToBooleanConverter();
} else if (Date.class.isAssignableFrom(sourceType)) {
return new StringToDateConverter();
} else if (Enum.class.isAssignableFrom(sourceType)) {
return new StringToEnumConverter();
} else if (BigInteger.class.isAssignableFrom(sourceType)) {
return new StringToBigIntegerConverter();
} else if (Short.class.isAssignableFrom(sourceType)) {
return new StringToShortConverter();
} else if (Byte.class.isAssignableFrom(sourceType)) {
return new StringToByteConverter();
} else {
return null;
}
}
}