com.opensymphony.xwork2.conversion.impl.StringConverter Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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
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* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package com.opensymphony.xwork2.conversion.impl;
import org.apache.commons.lang3.StringUtils;
import java.lang.reflect.Array;
import java.lang.reflect.Member;
import java.math.BigDecimal;
import java.text.DateFormat;
import java.text.NumberFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Date;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Objects;
public class StringConverter extends DefaultTypeConverter {
@Override
public Object convertValue(Map context, Object target, Member member, String propertyName, Object value, Class toType) {
String result;
if (value.getClass().isArray()) {
int length = Array.getLength(value);
List converted = new ArrayList<>(length);
for (int i = 0; i < length; i++) {
Object o = Array.get(value, i);
converted.add(convertToString(getLocale(context), o));
}
result = StringUtils.join(converted, ", ");
} else if(value.getClass().isAssignableFrom(Collection.class)) {
Collection colValue = (Collection) value;
List converted = new ArrayList<>(colValue.hashCode());
for (Object o : colValue) {
converted.add(convertToString(getLocale(context), o));
}
result = StringUtils.join(converted, ", ");
} else if (value instanceof Date) {
DateFormat df;
if (value instanceof java.sql.Time) {
df = DateFormat.getTimeInstance(DateFormat.MEDIUM, getLocale(context));
} else if (value instanceof java.sql.Timestamp) {
SimpleDateFormat dfmt = (SimpleDateFormat) DateFormat.getDateTimeInstance(DateFormat.SHORT,
DateFormat.MEDIUM,
getLocale(context));
df = new SimpleDateFormat(dfmt.toPattern() + MILLISECOND_FORMAT);
} else {
df = DateFormat.getDateInstance(DateFormat.SHORT, getLocale(context));
}
result = df.format(value);
} else {
result = convertToString(getLocale(context), value);
}
return result;
}
protected String convertToString(Locale locale, Object value) {
if (Number.class.isInstance(value)) {
NumberFormat format = NumberFormat.getNumberInstance(locale);
format.setGroupingUsed(false);
// TODO: delete this variable and corresponding if statement when jdk fixed java.text.NumberFormat.format's behavior with Float
Object fixedValue = value;
if (BigDecimal.class.isInstance(value) || Double.class.isInstance(value) || Float.class.isInstance(value)) {
format.setMaximumFractionDigits(Integer.MAX_VALUE);
if (Float.class.isInstance(value)) {
fixedValue = Double.valueOf(value.toString());
}
}
return format.format(fixedValue);
} else {
return Objects.toString(value, null);
}
}
}