package us.codecraft.webmagic.model.formatter;
import java.util.Arrays;
import java.util.List;
/**
* @author code4crafter@gmail.com
* @since 0.3.2
*/
public abstract class BasicTypeFormatter<T> implements ObjectFormatter<T> {
@Override
public void initParam(String[] extra) {
}
@Override
public T format(String raw) throws Exception {
if (raw == null) {
return null;
}
raw = raw.trim();
return formatTrimmed(raw);
}
protected abstract T formatTrimmed(String raw) throws Exception;
public static final List<Class<? extends ObjectFormatter>> basicTypeFormatters = Arrays.<Class<? extends ObjectFormatter>>asList(IntegerFormatter.class,
LongFormatter.class, DoubleFormatter.class, FloatFormatter.class, ShortFormatter.class,
CharactorFormatter.class, ByteFormatter.class, BooleanFormatter.class);
public static Class<?> detectBasicClass(Class<?> type) {
if (type.equals(Integer.TYPE) || type.equals(Integer.class)) {
return Integer.class;
} else if (type.equals(Long.TYPE) || type.equals(Long.class)) {
return Long.class;
} else if (type.equals(Double.TYPE) || type.equals(Double.class)) {
return Double.class;
} else if (type.equals(Float.TYPE) || type.equals(Float.class)) {
return Float.class;
} else if (type.equals(Short.TYPE) || type.equals(Short.class)) {
return Short.class;
} else if (type.equals(Character.TYPE) || type.equals(Character.class)) {
return Character.class;
} else if (type.equals(Byte.TYPE) || type.equals(Byte.class)) {
return Byte.class;
} else if (type.equals(Boolean.TYPE) || type.equals(Boolean.class)) {
return Boolean.class;
}
return type;
}
public static class IntegerFormatter extends BasicTypeFormatter<Integer> {
@Override
public Integer formatTrimmed(String raw) throws Exception {
return Integer.parseInt(raw);
}
@Override
public Class<Integer> clazz() {
return Integer.class;
}
}
public static class LongFormatter extends BasicTypeFormatter<Long> {
@Override
public Long formatTrimmed(String raw) throws Exception {
return Long.parseLong(raw);
}
@Override
public Class<Long> clazz() {
return Long.class;
}
}
public static class DoubleFormatter extends BasicTypeFormatter<Double> {
@Override
public Double formatTrimmed(String raw) throws Exception {
return Double.parseDouble(raw);
}
@Override
public Class<Double> clazz() {
return Double.class;
}
}
public static class FloatFormatter extends BasicTypeFormatter<Float> {
@Override
public Float formatTrimmed(String raw) throws Exception {
return Float.parseFloat(raw);
}
@Override
public Class<Float> clazz() {
return Float.class;
}
}
public static class ShortFormatter extends BasicTypeFormatter<Short> {
@Override
public Short formatTrimmed(String raw) throws Exception {
return Short.parseShort(raw);
}
@Override
public Class<Short> clazz() {
return Short.class;
}
}
public static class CharactorFormatter extends BasicTypeFormatter<Character> {
@Override
public Character formatTrimmed(String raw) throws Exception {
return raw.charAt(0);
}
@Override
public Class<Character> clazz() {
return Character.class;
}
}
public static class ByteFormatter extends BasicTypeFormatter<Byte> {
@Override
public Byte formatTrimmed(String raw) throws Exception {
return Byte.parseByte(raw, 10);
}
@Override
public Class<Byte> clazz() {
return Byte.class;
}
}
public static class BooleanFormatter extends BasicTypeFormatter<Boolean> {
@Override
public Boolean formatTrimmed(String raw) throws Exception {
return Boolean.parseBoolean(raw);
}
@Override
public Class<Boolean> clazz() {
return Boolean.class;
}
}
}