org.elasticsearch.search.facets.range.InternalRangeFacet Maven / Gradle / Ivy
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/*
* Licensed to Elastic Search and Shay Banon under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Elastic Search 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.facets.range;
import org.elasticsearch.common.collect.ImmutableList;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentBuilderString;
import org.elasticsearch.search.facets.Facet;
import org.elasticsearch.search.facets.internal.InternalFacet;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;
/**
* @author kimchy (shay.banon)
*/
public class InternalRangeFacet implements RangeFacet, InternalFacet {
private String name;
private String keyFieldName;
private String valueFieldName;
private Entry[] entries;
InternalRangeFacet() {
}
public InternalRangeFacet(String name, String keyFieldName, String valueFieldName, Entry[] entries) {
this.name = name;
this.keyFieldName = keyFieldName;
this.valueFieldName = valueFieldName;
this.entries = entries;
}
@Override public String name() {
return this.name;
}
@Override public String getName() {
return name();
}
@Override public Type type() {
return Type.RANGE;
}
@Override public Type getType() {
return type();
}
@Override public String keyFieldName() {
return this.keyFieldName;
}
@Override public String getKeyFieldName() {
return keyFieldName();
}
@Override public String valueFieldName() {
return this.valueFieldName;
}
@Override public String getValueFieldName() {
return valueFieldName();
}
@Override public List entries() {
return ImmutableList.copyOf(entries);
}
@Override public List getEntries() {
return entries();
}
@Override public Iterator iterator() {
return entries().iterator();
}
@Override public Facet aggregate(Iterable facets) {
InternalRangeFacet agg = null;
for (Facet facet : facets) {
if (!facet.name().equals(name)) {
continue;
}
InternalRangeFacet geoDistanceFacet = (InternalRangeFacet) facet;
if (agg == null) {
agg = geoDistanceFacet;
} else {
for (int i = 0; i < geoDistanceFacet.entries.length; i++) {
agg.entries[i].count += geoDistanceFacet.entries[i].count;
agg.entries[i].total += geoDistanceFacet.entries[i].total;
}
}
}
return agg;
}
public static InternalRangeFacet readRangeFacet(StreamInput in) throws IOException {
InternalRangeFacet facet = new InternalRangeFacet();
facet.readFrom(in);
return facet;
}
@Override public void readFrom(StreamInput in) throws IOException {
name = in.readUTF();
keyFieldName = in.readUTF();
valueFieldName = in.readUTF();
entries = new Entry[in.readVInt()];
for (int i = 0; i < entries.length; i++) {
Entry entry = new Entry();
entry.from = in.readDouble();
entry.to = in.readDouble();
if (in.readBoolean()) {
entry.fromAsString = in.readUTF();
}
if (in.readBoolean()) {
entry.toAsString = in.readUTF();
}
entry.count = in.readVLong();
entry.total = in.readDouble();
entries[i] = entry;
}
}
@Override public void writeTo(StreamOutput out) throws IOException {
out.writeUTF(name);
out.writeUTF(keyFieldName);
out.writeUTF(valueFieldName);
out.writeVInt(entries.length);
for (Entry entry : entries) {
out.writeDouble(entry.from);
out.writeDouble(entry.to);
if (entry.fromAsString == null) {
out.writeBoolean(false);
} else {
out.writeBoolean(true);
out.writeUTF(entry.fromAsString);
}
if (entry.toAsString == null) {
out.writeBoolean(false);
} else {
out.writeBoolean(true);
out.writeUTF(entry.toAsString);
}
out.writeVLong(entry.count);
out.writeDouble(entry.total);
}
}
static final class Fields {
static final XContentBuilderString _TYPE = new XContentBuilderString("_type");
static final XContentBuilderString _KEY_FIELD = new XContentBuilderString("_key_field");
static final XContentBuilderString _VALUE_FIELD = new XContentBuilderString("_value_field");
static final XContentBuilderString RANGES = new XContentBuilderString("ranges");
static final XContentBuilderString FROM = new XContentBuilderString("from");
static final XContentBuilderString FROM_STR = new XContentBuilderString("from_str");
static final XContentBuilderString TO = new XContentBuilderString("to");
static final XContentBuilderString TO_STR = new XContentBuilderString("to_str");
static final XContentBuilderString COUNT = new XContentBuilderString("count");
static final XContentBuilderString TOTAL = new XContentBuilderString("total");
static final XContentBuilderString MEAN = new XContentBuilderString("mean");
}
@Override public void toXContent(XContentBuilder builder, Params params) throws IOException {
builder.startObject(name);
builder.field(Fields._TYPE, "range");
builder.field(Fields._KEY_FIELD, keyFieldName);
builder.field(Fields._VALUE_FIELD, valueFieldName);
builder.startArray(Fields.RANGES);
for (Entry entry : entries) {
builder.startObject();
if (!Double.isInfinite(entry.from)) {
builder.field(Fields.FROM, entry.from);
}
if (entry.fromAsString != null) {
builder.field(Fields.FROM_STR, entry.fromAsString);
}
if (!Double.isInfinite(entry.to)) {
builder.field(Fields.TO, entry.to);
}
if (entry.toAsString != null) {
builder.field(Fields.TO_STR, entry.toAsString);
}
builder.field(Fields.COUNT, entry.count());
builder.field(Fields.TOTAL, entry.total());
builder.field(Fields.MEAN, entry.mean());
builder.endObject();
}
builder.endArray();
builder.endObject();
}
}