/*
* Copyright 2013 serso aka se.solovyev
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* ---------------------------------------------------------------------
* Contact details
*
* Email: se.solovyev@gmail.com
* Site: http://se.solovyev.org
*/
package org.solovyev.common.text;
import org.solovyev.android.Check;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class NumberMapper<N extends Number> implements Mapper<N> {
private static final List<Class<? extends Number>> supportedClasses = NumberParser.supportedClasses;
private static final Map<Class<?>, Mapper<?>> mappers = new HashMap<>(supportedClasses.size());
static {
for (Class<? extends Number> supportedClass : supportedClasses) {
mappers.put(supportedClass, newInstance(supportedClass));
}
}
@Nonnull
private final Formatter<N> formatter;
@Nonnull
private final Parser<? extends N> parser;
/**
* Use org.solovyev.common.text.NumberMapper#getMapper(java.lang.Class<N>) instead
*
* @param clazz class representing parsed object
*/
private NumberMapper(@Nonnull Class<? extends N> clazz) {
this(NumberParser.of(clazz), ValueOfFormatter.<N>getNotNullFormatter());
}
private NumberMapper(@Nonnull Parser<? extends N> parser,
@Nonnull Formatter<N> formatter) {
this.parser = parser;
this.formatter = formatter;
}
@Nonnull
public static <N extends Number> Mapper<N> newInstance(@Nonnull Parser<? extends N> parser,
@Nonnull Formatter<N> formatter) {
return new NumberMapper<>(parser, formatter);
}
@Nonnull
private static <N extends Number> Mapper<N> newInstance(@Nonnull Class<? extends N> clazz) {
return new NumberMapper<>(clazz);
}
@Nonnull
public static <N extends Number> Mapper<N> of(@Nonnull Class<? extends N> clazz) {
Check.isTrue(supportedClasses.contains(clazz), "Class " + clazz + " is not supported by " + NumberMapper.class);
return (Mapper<N>) mappers.get(clazz);
}
@Override
public String formatValue(@Nullable N value) throws IllegalArgumentException {
return formatter.formatValue(value);
}
@Override
public N parseValue(@Nullable String value) throws IllegalArgumentException {
return this.parser.parseValue(value);
}
}