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JodaDateTimeCodecBase.java
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105 lines (84 loc) · 3.08 KB
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package act.data;
/*-
* #%L
* ACT Framework
* %%
* Copyright (C) 2014 - 2017 ActFramework
* %%
* 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.
* #L%
*/
import act.data.annotation.Pattern;
import act.util.ActContext;
import org.joda.time.format.DateTimeFormat;
import org.joda.time.format.DateTimeFormatter;
import org.osgl.$;
import org.osgl.util.AnnotationAware;
import org.osgl.util.S;
import org.osgl.util.StringValueResolver;
import org.osgl.util.ValueObject;
public abstract class JodaDateTimeCodecBase<T> extends StringValueResolver<T> implements ValueObject.Codec<T> {
private DateTimeFormatter formatter;
public JodaDateTimeCodecBase(DateTimeFormatter formatter) {
formatter(formatter);
}
public JodaDateTimeCodecBase(String pattern) {
formatter(formatter(pattern));
}
@Override
public final T parse(String s) {
return resolve(s);
}
@Override
public final Class<T> targetClass() {
return targetType();
}
@Override
public final T resolve(String value) {
return S.blank(value) ? null : parse(formatter(), value);
}
public final String toJSONString(T o) {
String s = toString(o);
return S.newSizedBuffer(s.length() + 2).append("\"").append(s).append("\"").toString();
}
@Override
public final StringValueResolver<T> amended(AnnotationAware beanSpec) {
Pattern pattern = beanSpec.getAnnotation(Pattern.class);
return null == pattern ? this : create(pattern.value());
}
protected abstract T parse(DateTimeFormatter formatter, String value);
protected abstract DateTimeFormatter isoFormatter();
protected abstract T now();
private void verify() {
T now = now();
String s = toString(now);
if (!s.equals(toString(parse(s)))) {
throw new IllegalArgumentException("Invalid pattern");
}
}
protected abstract JodaDateTimeCodecBase<T> create(String pattern);
protected final DateTimeFormatter formatter() {
String pattern = ActContext.Base.dataPattern();
return null == pattern ? this.formatter : formatter(pattern);
}
private void formatter(DateTimeFormatter formatter) {
this.formatter = $.notNull(formatter);
verify();
}
private DateTimeFormatter formatter(String pattern) {
return isIsoStandard(pattern) ? isoFormatter() : DateTimeFormat.forPattern(pattern);
}
public static boolean isIsoStandard(String pattern) {
return null == pattern || pattern.contains("iso") || pattern.contains("ISO") || pattern.contains("8601");
}
}