org.elasticsearch.index.field.data.floats.FloatFieldData Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of elasticsearch Show documentation
Show all versions of elasticsearch Show documentation
Elasticsearch subproject :server
/*
* 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.index.field.data.floats;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.search.FieldCache;
import org.elasticsearch.common.trove.TFloatArrayList;
import org.elasticsearch.index.field.data.FieldDataType;
import org.elasticsearch.index.field.data.NumericFieldData;
import org.elasticsearch.index.field.data.support.FieldDataLoader;
import java.io.IOException;
/**
* @author kimchy (shay.banon)
*/
public abstract class FloatFieldData extends NumericFieldData {
static final float[] EMPTY_FLOAT_ARRAY = new float[0];
protected final float[] values;
protected FloatFieldData(String fieldName, float[] values) {
super(fieldName);
this.values = values;
}
abstract public float value(int docId);
abstract public float[] values(int docId);
@Override public FloatDocFieldData docFieldData(int docId) {
return super.docFieldData(docId);
}
@Override protected FloatDocFieldData createFieldData() {
return new FloatDocFieldData(this);
}
@Override public String stringValue(int docId) {
return Float.toString(value(docId));
}
@Override public void forEachValue(StringValueProc proc) {
for (int i = 1; i < values.length; i++) {
proc.onValue(Float.toString(values[i]));
}
}
@Override public byte byteValue(int docId) {
return (byte) value(docId);
}
@Override public short shortValue(int docId) {
return (short) value(docId);
}
@Override public int intValue(int docId) {
return (int) value(docId);
}
@Override public long longValue(int docId) {
return (long) value(docId);
}
@Override public float floatValue(int docId) {
return value(docId);
}
@Override public double doubleValue(int docId) {
return (double) value(docId);
}
@Override public FieldDataType type() {
return FieldDataType.DefaultTypes.FLOAT;
}
public void forEachValue(ValueProc proc) {
for (int i = 1; i < values.length; i++) {
proc.onValue(values[i]);
}
}
public static interface ValueProc {
void onValue(float value);
}
public static FloatFieldData load(IndexReader reader, String field) throws IOException {
return FieldDataLoader.load(reader, field, new FloatTypeLoader());
}
static class FloatTypeLoader extends FieldDataLoader.FreqsTypeLoader {
private final TFloatArrayList terms = new TFloatArrayList();
FloatTypeLoader() {
super();
// the first one indicates null value
terms.add(0);
}
@Override public void collectTerm(String term) {
terms.add(FieldCache.NUMERIC_UTILS_FLOAT_PARSER.parseFloat(term));
}
@Override public FloatFieldData buildSingleValue(String field, int[] order) {
return new SingleValueFloatFieldData(field, order, terms.toNativeArray());
}
@Override public FloatFieldData buildMultiValue(String field, int[][] order) {
return new MultiValueFloatFieldData(field, order, terms.toNativeArray());
}
}
}