IndexStorage.IFileInfo.java Source code

Introduction

Here is the source code for IndexStorage.IFileInfo.java

Source

/**
* Tencent is pleased to support the open source community by making TDW available.
* Copyright (C) 2014 THL A29 Limited, a Tencent company. All rights reserved.
* 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 IndexStorage;

import java.io.IOException;
import java.util.Collection;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FSDataInputStream;
import org.apache.hadoop.fs.FSDataOutputStream;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;

import Comm.ConstVar;
import IndexStorage.IUnitPool.UnitOperator;

public class IFileInfo {

    private FileSystem fs;

    private String fileName;
    private Configuration conf;
    private long confUnitSize;
    private long confSegmentSize;

    private IHead head;
    private boolean var;
    private boolean compressed;
    private boolean havelineindex;
    private boolean havekeyindex;

    private long filelength;
    private int currentline;

    private byte workStatus;
    private FSDataInputStream in;
    private FSDataOutputStream out;
    private IUnitPool unitPool;
    private UnitOperator unitOperator;
    private int recordlen;

    public IFileInfo(Configuration conf) throws IOException {
        this.conf = conf;
        fs = FileSystem.get(conf);

        this.confSegmentSize = conf.getLong(ConstVar.ConfSegmentSize, ConstVar.DefaultSegmentSize);
        this.confUnitSize = conf.getLong(ConstVar.ConfUnitSize, ConstVar.DefaultUnitSize);
        this.conf.setInt("io.compression.codec.lzo.buffersize", 128 * 1024);
        this.currentline = 0;
    }

    private void initialHead() throws IOException {
        var = head.getVar() == 1 ? true : false;
        if (!var) {
            Collection<IFieldType> fts = head.fieldMap().fieldtypes().values();
            recordlen = fts.size() / 8 + 1;
            for (IFieldType ft : fts) {
                recordlen += ft.getLen();
            }
        }
        compressed = head.getCompress() == 1 ? true : false;
        havelineindex = head.lineindex() == 1 ? true : false;
        havekeyindex = head.getPrimaryIndex() > -1 ? true : false;
        unitPool = new IUnitPool(this);
        unitOperator = unitPool.unitOperator();
    }

    public void initialize(String fileName, IHead head) throws IOException {
        this.workStatus = ConstVar.WS_Write;
        this.fileName = fileName;
        this.out = fs.create(new Path(fileName));
        this.head = head;
        this.head.persistent(out);
        this.initialHead();
    }

    public void initialize(String fileName) throws IOException {
        this.workStatus = ConstVar.WS_Read;
        this.fileName = fileName;
        this.filelength = fs.getFileStatus(new Path(fileName)).getLen();
        this.in = fs.open(new Path(fileName));
        this.head = new IHead();
        this.head.unpersistent(in);
        this.initialHead();
    }

    public String filename() {
        return this.fileName;
    }

    public Configuration conf() {
        return conf;
    }

    public IHead head() {
        return head;
    }

    public byte workStatus() {
        return workStatus;
    }

    public FSDataInputStream in() {
        return in;
    }

    public FSDataOutputStream out() {
        return out;
    }

    public long confSegmentSize() {
        return confSegmentSize;
    }

    public long confUnitSize() {
        return this.confUnitSize;
    }

    public boolean havelineindex() {
        return havelineindex;
    }

    public boolean havekeyindex() {
        return havekeyindex;
    }

    public boolean isVar() {
        return this.var;
    }

    public boolean compressed() {
        return this.compressed;
    }

    public int currentline() {
        return this.currentline;
    }

    public UnitOperator unitOperator() {
        return this.unitOperator;
    }

    public int recordlen() {
        return recordlen;
    }

    public long filelength() {
        return this.filelength;
    }

    public void increasecurrentline() {
        this.currentline++;
    }

    public void setcurrentline(int line) {
        this.currentline = line;
    }
}