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JaVers - object auditing and diff framework for Java
package org.javers.common.string;
import org.javers.core.JaversCoreProperties.PrettyPrintDateFormats;
import java.time.format.DateTimeFormatter;
import java.time.temporal.Temporal;
import java.time.temporal.TemporalAccessor;
import java.util.*;
import static java.time.format.DateTimeFormatter.ofPattern;
public class PrettyValuePrinter {
private final Map, DateTimeFormatter> dateFormatters = new HashMap<>();
private static final PrettyValuePrinter defaultInstance = new PrettyValuePrinter(new PrettyPrintDateFormats());
public static PrettyValuePrinter getDefault() {
return defaultInstance;
}
public PrettyValuePrinter(PrettyPrintDateFormats prettyPrintDateFormats) {
for (Class classKey : prettyPrintDateFormats.getFormats().keySet()) {
dateFormatters.put(classKey, ofPattern(prettyPrintDateFormats.getFormats()
.get(classKey)));
}
}
public String formatWithQuotes(Object value) {
return "'" + format(value) + "'";
}
public String format(Object value) {
if (value == null) {
return "";
}
if (value instanceof TemporalAccessor) {
DateTimeFormatter formatter = dateFormatters.get(value.getClass());
if (formatter != null) {
return formatter.format((TemporalAccessor) value);
}
}
if ( value instanceof Set) {
return ToStringBuilder.setToString((Set)value);
}
if ( value instanceof List) {
return ToStringBuilder.listToString((List)value);
}
if ( value instanceof Optional) {
if ( ((Optional)value).isPresent()) {
return format(((Optional) value).get());
} else {
return "empty";
}
}
return value.toString();
}
}