fiftyone.mobile.detection.entities.stream.Profile Maven / Gradle / Ivy

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package fiftyone.mobile.detection.entities.stream;

import fiftyone.mobile.detection.entities.BaseEntity;
import fiftyone.mobile.detection.readers.BinaryReader;

/* *********************************************************************
 * This Source Code Form is copyright of 51Degrees Mobile Experts Limited. 
 * Copyright 2014 51Degrees Mobile Experts Limited, 5 Charlotte Close,
 * Caversham, Reading, Berkshire, United Kingdom RG4 7BY
 * 
 * This Source Code Form is the subject of the following patent 
 * applications, owned by 51Degrees Mobile Experts Limited of 5 Charlotte
 * Close, Caversham, Reading, Berkshire, United Kingdom RG4 7BY: 
 * European Patent Application No. 13192291.6; and 
 * United States Patent Application Nos. 14/085,223 and 14/085,301.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0.
 * 
 * If a copy of the MPL was not distributed with this file, You can obtain
 * one at http://mozilla.org/MPL/2.0/.
 * 
 * This Source Code Form is "Incompatible With Secondary Licenses", as
 * defined by the Mozilla Public License, v. 2.0.
 * ********************************************************************* */
/**
 * Profile entity with stream specific data access implementation.
 */
public class Profile extends fiftyone.mobile.detection.entities.Profile {
    private final int position;
    private final int valueIndexesCount;
    private final int signatureIndexesCount;
    private final Pool pool;
    
    public Profile(Dataset dataSet, int index, BinaryReader reader) {
        super(dataSet, index, reader);
        this.pool = dataSet.pool;
        valueIndexesCount = reader.readInt32();
        signatureIndexesCount = reader.readInt32();
        position = reader.getPos();
    }
    
    @Override
    public int[] getValueIndexes() {
        if(valueIndexes == null) {
            synchronized(this) {
                if(valueIndexes == null) {
                    BinaryReader reader = null;
                    try {
                        reader = pool.getReader();
                        reader.setPos(position);
                        valueIndexes = BaseEntity.readIntegerArray(reader, valueIndexesCount);
                    } catch (Exception ex) {
                        throw new Error("Cannot to obtain _valueIndexes: "+ex);
                    } finally {
                        if (reader != null) {
                            pool.release(reader);
                        }
                    }
                }
            }
        }
        return valueIndexes;
    }
    
    public int[] getSignatureIndexes() {
        if(signatureIndexes == null) {
            synchronized(this) {
                if (signatureIndexes == null) {
                    BinaryReader reader = null;
                    try {
                        reader = pool.getReader();
                        int offset = valueIndexesCount * (Integer.SIZE / Byte.SIZE);
                        reader.setPos(position + offset);
                        signatureIndexes = BaseEntity.readIntegerArray(reader, signatureIndexesCount);
                    } catch (Exception ex) {
                        throw new Error("Cannot to obtain _signatureIndexes: "+ex);
                    } finally {
                        if (reader != null)
                            pool.release(reader);
                    }
                }
            }
        }
        return signatureIndexes;
    }
}