org.apache.juneau.PropertyConverter Maven / Gradle / Ivy
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// * to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance *
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// * *
// * http://www.apache.org/licenses/LICENSE-2.0 *
// * *
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// ***************************************************************************************************************************
package org.apache.juneau;
import org.apache.juneau.internal.*;
/**
* Used to convert property values to standardized Boolean/Integer/Class/Object values in property store builders.
*
* @param The normalized form.
*/
public interface PropertyConverter {
/**
* Convert the value to normalized form.
*
* @param o The raw value.
* @return The converted value.
*/
T convert(Object o);
/**
* Converts objects to strings.
*/
static final PropertyConverter STRING_CONVERTER = new PropertyConverter() {
@Override
public String convert(Object o) {
return ClassUtils.toString(o);
}
};
/**
* Converts objects to integers.
*/
static final PropertyConverter INTEGER_CONVERTER = new PropertyConverter() {
@Override
public Integer convert(Object o) {
try {
if (o instanceof Integer)
return (Integer)o;
return Integer.valueOf(o.toString());
} catch (Exception e) {
throw new ConfigException("Value ''{0}'' ({1}) cannot be converted to an Integer.", o, o.getClass().getSimpleName());
}
}
};
/**
* Converts objects to booleans.
*/
static final PropertyConverter BOOLEAN_CONVERTER = new PropertyConverter() {
@Override
public Boolean convert(Object o) {
if (o instanceof Boolean)
return (Boolean)o;
return Boolean.parseBoolean(o.toString());
}
};
/**
* Converts objects to classes.
*/
static final PropertyConverter> CLASS_CONVERTER = new PropertyConverter>() {
@Override
public Class convert(Object o) {
try {
if (o instanceof Class)
return (Class)o;
throw new ConfigException("Value ''{0}'' ({1}) cannot be converted to a Class.", o, o.getClass().getSimpleName());
} catch (Exception e) {
throw new ConfigException("Value ''{0}'' ({1}) cannot be converted to a Class.", o, o.getClass().getSimpleName());
}
}
};
/**
* Converts objects to objects.
*/
static final PropertyConverter