com.netflix.zeno.flatblob.FlatBlobDeserializationRecord Maven / Gradle / Ivy

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/*
 *
 *  Copyright 2014 Netflix, Inc.
 *
 *     Licensed 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 com.netflix.zeno.flatblob;

import com.netflix.zeno.fastblob.record.ByteData;
import com.netflix.zeno.fastblob.record.VarInt;
import com.netflix.zeno.fastblob.record.schema.FastBlobSchema;
import com.netflix.zeno.fastblob.record.schema.FastBlobSchema.FieldType;
import com.netflix.zeno.serializer.NFDeserializationRecord;

public class FlatBlobDeserializationRecord extends NFDeserializationRecord {

    private final long fieldPointers[];
    private ByteData byteData;
    private boolean cacheElements;

    public FlatBlobDeserializationRecord(FastBlobSchema schema) {
        super(schema);
        this.fieldPointers = new long[schema.numFields()];
    }

    public void setByteData(ByteData byteData) {
        this.byteData = byteData;
    }

    public void setCacheElements(boolean cacheElements) {
        this.cacheElements = cacheElements;
    }

    public boolean shouldCacheElements() {
        return cacheElements;
    }

    /**
     * Position this record to the byte at index objectBeginOffset.
     *
     * @param objectBeginOffset
     * @return The length of the object's data, in bytes.
     */
    public int position(long objectBeginOffset) {
        long currentPosition = objectBeginOffset;

        for(int i=0;i