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/*
* 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;
import org.apache.lucene.document.InetAddressPoint;
import org.apache.lucene.util.BytesRef;
import org.elasticsearch.Version;
import org.elasticsearch.common.io.stream.NamedWriteable;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.network.InetAddresses;
import org.elasticsearch.common.network.NetworkAddress;
import org.elasticsearch.common.time.DateFormatter;
import org.elasticsearch.common.time.DateMathParser;
import org.elasticsearch.common.time.DateUtils;
import org.elasticsearch.geometry.utils.Geohash;
import org.elasticsearch.index.mapper.DateFieldMapper;
import org.elasticsearch.search.aggregations.bucket.geogrid.GeoTileUtils;
import java.io.IOException;
import java.net.InetAddress;
import java.text.DecimalFormat;
import java.text.DecimalFormatSymbols;
import java.text.NumberFormat;
import java.text.ParseException;
import java.time.ZoneId;
import java.util.Arrays;
import java.util.Base64;
import java.util.Locale;
import java.util.Objects;
import java.util.function.LongSupplier;
/** A formatter for values as returned by the fielddata/doc-values APIs. */
public interface DocValueFormat extends NamedWriteable {
/** Format a long value. This is used by terms and histogram aggregations
* to format keys for fields that use longs as a doc value representation
* such as the {@code long} and {@code date} fields. */
default Object format(long value) {
throw new UnsupportedOperationException();
}
/** Format a double value. This is used by terms and stats aggregations
* to format keys for fields that use numbers as a doc value representation
* such as the {@code long}, {@code double} or {@code date} fields. */
default Object format(double value) {
throw new UnsupportedOperationException();
}
/** Format a binary value. This is used by terms aggregations to format
* keys for fields that use binary doc value representations such as the
* {@code keyword} and {@code ip} fields. */
default Object format(BytesRef value) {
throw new UnsupportedOperationException();
}
/** Parse a value that was formatted with {@link #format(long)} back to the
* original long value. */
default long parseLong(String value, boolean roundUp, LongSupplier now) {
throw new UnsupportedOperationException();
}
/** Parse a value that was formatted with {@link #format(double)} back to
* the original double value. */
default double parseDouble(String value, boolean roundUp, LongSupplier now) {
throw new UnsupportedOperationException();
}
/** Parse a value that was formatted with {@link #format(BytesRef)} back
* to the original BytesRef. */
default BytesRef parseBytesRef(String value) {
throw new UnsupportedOperationException();
}
DocValueFormat RAW = new DocValueFormat() {
@Override
public String getWriteableName() {
return "raw";
}
@Override
public void writeTo(StreamOutput out) {
}
@Override
public Long format(long value) {
return value;
}
@Override
public Double format(double value) {
return value;
}
@Override
public String format(BytesRef value) {
return value.utf8ToString();
}
@Override
public long parseLong(String value, boolean roundUp, LongSupplier now) {
try {
// Prefer parsing as a long to avoid losing precision
return Long.parseLong(value);
} catch (NumberFormatException e) {
// retry as a double
}
double d = Double.parseDouble(value);
if (roundUp) {
d = Math.ceil(d);
} else {
d = Math.floor(d);
}
return Math.round(d);
}
@Override
public double parseDouble(String value, boolean roundUp, LongSupplier now) {
return Double.parseDouble(value);
}
@Override
public BytesRef parseBytesRef(String value) {
return new BytesRef(value);
}
@Override
public String toString() {
return "raw";
}
};
DocValueFormat BINARY = new DocValueFormat() {
@Override
public String getWriteableName() {
return "binary";
}
@Override
public void writeTo(StreamOutput out) {
}
@Override
public String format(BytesRef value) {
return Base64.getEncoder()
.withoutPadding()
.encodeToString(Arrays.copyOfRange(value.bytes, value.offset, value.offset + value.length));
}
@Override
public BytesRef parseBytesRef(String value) {
return new BytesRef(Base64.getDecoder().decode(value));
}
};
static DocValueFormat withNanosecondResolution(final DocValueFormat format) {
if (format instanceof DateTime) {
DateTime dateTime = (DateTime) format;
return new DateTime(dateTime.formatter, dateTime.timeZone, DateFieldMapper.Resolution.NANOSECONDS);
} else {
throw new IllegalArgumentException("trying to convert a known date time formatter to a nanosecond one, wrong field used?");
}
}
final class DateTime implements DocValueFormat {
public static final String NAME = "date_time";
final DateFormatter formatter;
final ZoneId timeZone;
private final DateMathParser parser;
final DateFieldMapper.Resolution resolution;
public DateTime(DateFormatter formatter, ZoneId timeZone, DateFieldMapper.Resolution resolution) {
this.formatter = formatter;
this.timeZone = Objects.requireNonNull(timeZone);
this.parser = formatter.toDateMathParser();
this.resolution = resolution;
}
public DateTime(StreamInput in) throws IOException {
this.formatter = DateFormatter.forPattern(in.readString());
this.parser = formatter.toDateMathParser();
String zoneId = in.readString();
if (in.getVersion().before(Version.V_7_0_0)) {
this.timeZone = DateUtils.of(zoneId);
this.resolution = DateFieldMapper.Resolution.MILLISECONDS;
} else {
this.timeZone = ZoneId.of(zoneId);
this.resolution = DateFieldMapper.Resolution.ofOrdinal(in.readVInt());
}
}
@Override
public String getWriteableName() {
return NAME;
}
@Override
public void writeTo(StreamOutput out) throws IOException {
out.writeString(formatter.pattern());
if (out.getVersion().before(Version.V_7_0_0)) {
out.writeString(DateUtils.zoneIdToDateTimeZone(timeZone).getID());
} else {
out.writeString(timeZone.getId());
out.writeVInt(resolution.ordinal());
}
}
@Override
public String format(long value) {
return formatter.format(resolution.toInstant(value).atZone(timeZone));
}
@Override
public String format(double value) {
return format((long) value);
}
@Override
public long parseLong(String value, boolean roundUp, LongSupplier now) {
return resolution.convert(parser.parse(value, now, roundUp, timeZone));
}
@Override
public double parseDouble(String value, boolean roundUp, LongSupplier now) {
return parseLong(value, roundUp, now);
}
}
DocValueFormat GEOHASH = new DocValueFormat() {
@Override
public String getWriteableName() {
return "geo_hash";
}
@Override
public void writeTo(StreamOutput out) {
}
@Override
public String format(long value) {
return Geohash.stringEncode(value);
}
@Override
public String format(double value) {
return format((long) value);
}
};
DocValueFormat GEOTILE = new DocValueFormat() {
@Override
public String getWriteableName() {
return "geo_tile";
}
@Override
public void writeTo(StreamOutput out) {
}
@Override
public String format(long value) {
return GeoTileUtils.stringEncode(value);
}
@Override
public String format(double value) {
return format((long) value);
}
};
DocValueFormat BOOLEAN = new DocValueFormat() {
@Override
public String getWriteableName() {
return "bool";
}
@Override
public void writeTo(StreamOutput out) {
}
@Override
public Boolean format(long value) {
return value != 0;
}
@Override
public Boolean format(double value) {
return value != 0;
}
@Override
public long parseLong(String value, boolean roundUp, LongSupplier now) {
switch (value) {
case "false":
return 0;
case "true":
return 1;
}
throw new IllegalArgumentException("Cannot parse boolean [" + value + "], expected either [true] or [false]");
}
@Override
public double parseDouble(String value, boolean roundUp, LongSupplier now) {
return parseLong(value, roundUp, now);
}
};
DocValueFormat IP = new DocValueFormat() {
@Override
public String getWriteableName() {
return "ip";
}
@Override
public void writeTo(StreamOutput out) {
}
@Override
public String format(BytesRef value) {
byte[] bytes = Arrays.copyOfRange(value.bytes, value.offset, value.offset + value.length);
InetAddress inet = InetAddressPoint.decode(bytes);
return NetworkAddress.format(inet);
}
@Override
public BytesRef parseBytesRef(String value) {
return new BytesRef(InetAddressPoint.encode(InetAddresses.forString(value)));
}
@Override
public String toString() {
return "ip";
}
};
final class Decimal implements DocValueFormat {
public static final String NAME = "decimal";
private static final DecimalFormatSymbols SYMBOLS = new DecimalFormatSymbols(Locale.ROOT);
final String pattern;
private final NumberFormat format;
public Decimal(String pattern) {
this.pattern = pattern;
this.format = new DecimalFormat(pattern, SYMBOLS);
}
public Decimal(StreamInput in) throws IOException {
this(in.readString());
}
@Override
public String getWriteableName() {
return NAME;
}
@Override
public void writeTo(StreamOutput out) throws IOException {
out.writeString(pattern);
}
@Override
public String format(long value) {
return format.format(value);
}
@Override
public String format(double value) {
/*
* Explicitly check for NaN, since it formats to "�" or "NaN" depending on JDK version.
*
* Decimal formatter uses the JRE's default symbol list (via Locale.ROOT above). In JDK8,
* this translates into using {@link sun.util.locale.provider.JRELocaleProviderAdapter}, which loads
* {@link sun.text.resources.FormatData} for symbols. There, `NaN` is defined as `\ufffd` (�)
*
* In JDK9+, {@link sun.util.cldr.CLDRLocaleProviderAdapter} is used instead, which loads
* {@link sun.text.resources.cldr.FormatData}. There, `NaN` is defined as `"NaN"`
*
* Since the character � isn't very useful, and makes the output change depending on JDK version,
* we manually check to see if the value is NaN and return the string directly.
*/
if (Double.isNaN(value)) {
return String.valueOf(Double.NaN);
}
return format.format(value);
}
@Override
public long parseLong(String value, boolean roundUp, LongSupplier now) {
Number n;
try {
n = format.parse(value);
} catch (ParseException e) {
throw new RuntimeException(e);
}
if (format.isParseIntegerOnly()) {
return n.longValue();
} else {
double d = n.doubleValue();
if (roundUp) {
d = Math.ceil(d);
} else {
d = Math.floor(d);
}
return Math.round(d);
}
}
@Override
public double parseDouble(String value, boolean roundUp, LongSupplier now) {
Number n;
try {
n = format.parse(value);
} catch (ParseException e) {
throw new RuntimeException(e);
}
return n.doubleValue();
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
Decimal that = (Decimal) o;
return Objects.equals(pattern, that.pattern);
}
@Override
public int hashCode() {
return Objects.hash(pattern);
}
}
}