org.elasticsearch.search.aggregations.support.numeric.ValueFormatter Maven / Gradle / Ivy
/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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
* "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.
*/
package org.elasticsearch.search.aggregations.support.numeric;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.io.stream.Streamable;
import org.elasticsearch.common.joda.FormatDateTimeFormatter;
import org.elasticsearch.common.joda.Joda;
import org.elasticsearch.index.mapper.core.DateFieldMapper;
import org.elasticsearch.index.mapper.ip.IpFieldMapper;
import java.io.IOException;
import java.text.DecimalFormat;
import java.text.DecimalFormatSymbols;
import java.text.NumberFormat;
import java.util.Locale;
/**
* A strategy for formatting time represented as millis long value to string
*/
public interface ValueFormatter extends Streamable {
public final static ValueFormatter RAW = new Raw();
public final static ValueFormatter IPv4 = new IPv4Formatter();
/**
* Uniquely identifies this formatter (used for efficient serialization)
*
* @return The id of this formatter
*/
byte id();
/**
* Formats the given millis time value (since the epoch) to string.
*
* @param value The long value to format.
* @return The formatted value as string.
*/
String format(long value);
/**
* The
* @param value double The double value to format.
* @return The formatted value as string
*/
String format(double value);
static class Raw implements ValueFormatter {
static final byte ID = 1;
@Override
public String format(long value) {
return String.valueOf(value);
}
@Override
public String format(double value) {
return String.valueOf(value);
}
@Override
public byte id() {
return ID;
}
@Override
public void readFrom(StreamInput in) throws IOException {
}
@Override
public void writeTo(StreamOutput out) throws IOException {
}
}
/**
* A time formatter which is based on date/time format.
*/
public static class DateTime implements ValueFormatter {
public static final ValueFormatter DEFAULT = new ValueFormatter.DateTime(DateFieldMapper.Defaults.DATE_TIME_FORMATTER);
static final byte ID = 2;
FormatDateTimeFormatter formatter;
DateTime() {} // for serialization
public DateTime(String format) {
this.formatter = Joda.forPattern(format);
}
public DateTime(FormatDateTimeFormatter formatter) {
this.formatter = formatter;
}
@Override
public String format(long time) {
return formatter.printer().print(time);
}
public String format(double value) {
return format((long) value);
}
@Override
public byte id() {
return ID;
}
@Override
public void readFrom(StreamInput in) throws IOException {
formatter = Joda.forPattern(in.readString());
}
@Override
public void writeTo(StreamOutput out) throws IOException {
out.writeString(formatter.format());
}
}
public static abstract class Number implements ValueFormatter {
NumberFormat format;
Number() {} // for serialization
Number(NumberFormat format) {
this.format = format;
}
@Override
public String format(long value) {
return format.format(value);
}
@Override
public String format(double value) {
return format.format(value);
}
public static class Pattern extends Number {
private static final DecimalFormatSymbols SYMBOLS = new DecimalFormatSymbols(Locale.ROOT);
static final byte ID = 4;
String pattern;
Pattern() {} // for serialization
public Pattern(String pattern) {
super(new DecimalFormat(pattern, SYMBOLS));
this.pattern = pattern;
}
@Override
public byte id() {
return ID;
}
@Override
public void readFrom(StreamInput in) throws IOException {
pattern = in.readString();
format = new DecimalFormat(pattern, SYMBOLS);
}
@Override
public void writeTo(StreamOutput out) throws IOException {
out.writeString(pattern);
}
}
}
static class IPv4Formatter implements ValueFormatter {
static final byte ID = 6;
@Override
public byte id() {
return ID;
}
@Override
public String format(long value) {
return IpFieldMapper.longToIp(value);
}
@Override
public String format(double value) {
return format((long) value);
}
@Override
public void readFrom(StreamInput in) throws IOException {
}
@Override
public void writeTo(StreamOutput out) throws IOException {
}
}
}