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Elasticsearch subproject :server
/*
* 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.util.BytesRef;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.io.stream.Writeable;
import org.elasticsearch.common.xcontent.ToXContent.Params;
import org.elasticsearch.common.xcontent.ToXContentFragment;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.common.xcontent.XContentParserUtils;
import org.elasticsearch.search.SearchHit.Fields;
import java.io.IOException;
import java.util.Arrays;
import java.util.Objects;
public class SearchSortValues implements ToXContentFragment, Writeable {
static final SearchSortValues EMPTY = new SearchSortValues(new Object[0]);
private final Object[] sortValues;
SearchSortValues(Object[] sortValues) {
this.sortValues = Objects.requireNonNull(sortValues, "sort values must not be empty");
}
public SearchSortValues(Object[] sortValues, DocValueFormat[] sortValueFormats) {
Objects.requireNonNull(sortValues);
Objects.requireNonNull(sortValueFormats);
this.sortValues = Arrays.copyOf(sortValues, sortValues.length);
for (int i = 0; i < sortValues.length; ++i) {
if (this.sortValues[i] instanceof BytesRef) {
this.sortValues[i] = sortValueFormats[i].format((BytesRef) sortValues[i]);
}
}
}
public SearchSortValues(StreamInput in) throws IOException {
int size = in.readVInt();
if (size > 0) {
sortValues = new Object[size];
for (int i = 0; i < sortValues.length; i++) {
byte type = in.readByte();
if (type == 0) {
sortValues[i] = null;
} else if (type == 1) {
sortValues[i] = in.readString();
} else if (type == 2) {
sortValues[i] = in.readInt();
} else if (type == 3) {
sortValues[i] = in.readLong();
} else if (type == 4) {
sortValues[i] = in.readFloat();
} else if (type == 5) {
sortValues[i] = in.readDouble();
} else if (type == 6) {
sortValues[i] = in.readByte();
} else if (type == 7) {
sortValues[i] = in.readShort();
} else if (type == 8) {
sortValues[i] = in.readBoolean();
} else {
throw new IOException("Can't match type [" + type + "]");
}
}
} else {
sortValues = new Object[0];
}
}
@Override
public void writeTo(StreamOutput out) throws IOException {
out.writeVInt(sortValues.length);
for (Object sortValue : sortValues) {
if (sortValue == null) {
out.writeByte((byte) 0);
} else {
Class type = sortValue.getClass();
if (type == String.class) {
out.writeByte((byte) 1);
out.writeString((String) sortValue);
} else if (type == Integer.class) {
out.writeByte((byte) 2);
out.writeInt((Integer) sortValue);
} else if (type == Long.class) {
out.writeByte((byte) 3);
out.writeLong((Long) sortValue);
} else if (type == Float.class) {
out.writeByte((byte) 4);
out.writeFloat((Float) sortValue);
} else if (type == Double.class) {
out.writeByte((byte) 5);
out.writeDouble((Double) sortValue);
} else if (type == Byte.class) {
out.writeByte((byte) 6);
out.writeByte((Byte) sortValue);
} else if (type == Short.class) {
out.writeByte((byte) 7);
out.writeShort((Short) sortValue);
} else if (type == Boolean.class) {
out.writeByte((byte) 8);
out.writeBoolean((Boolean) sortValue);
} else {
throw new IOException("Can't handle sort field value of type [" + type + "]");
}
}
}
}
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
if (sortValues.length > 0) {
builder.startArray(Fields.SORT);
for (Object sortValue : sortValues) {
builder.value(sortValue);
}
builder.endArray();
}
return builder;
}
public static SearchSortValues fromXContent(XContentParser parser) throws IOException {
XContentParserUtils.ensureExpectedToken(XContentParser.Token.START_ARRAY, parser.currentToken(), parser::getTokenLocation);
return new SearchSortValues(parser.list().toArray());
}
public Object[] sortValues() {
return sortValues;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null || getClass() != obj.getClass()) {
return false;
}
SearchSortValues other = (SearchSortValues) obj;
return Arrays.equals(sortValues, other.sortValues);
}
@Override
public int hashCode() {
return Arrays.hashCode(sortValues);
}
}