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• taos-jdbcdriver
• 3.3.4
• source code
• TSDBResultSetBlockData.java

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com.taosdata.jdbc.TSDBResultSetBlockData Maven / Gradle / Ivy

/***************************************************************************
 * Copyright (c) 2019 TAOS Data, Inc. 
 *
 * This program is free software: you can use, redistribute, and/or modify
 * it under the terms of the GNU Affero General Public License, version 3
 * or later ("AGPL"), as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see .
 *****************************************************************************/
package com.taosdata.jdbc;

import com.google.common.primitives.Ints;
import com.google.common.primitives.Longs;
import com.google.common.primitives.Shorts;
import com.taosdata.jdbc.enums.TimestampPrecision;
import com.taosdata.jdbc.utils.Utils;

import java.io.UnsupportedEncodingException;
import java.math.BigDecimal;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.sql.SQLDataException;
import java.sql.SQLException;
import java.sql.Timestamp;
import java.sql.Types;
import java.time.Instant;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.*;

import static com.taosdata.jdbc.TSDBConstants.*;
import static com.taosdata.jdbc.utils.UnsignedDataUtils.*;

public class TSDBResultSetBlockData {
    private int numOfRows = 0;
    private int rowIndex = 0;

    private List columnMetaDataList;
    private ArrayList> colData;
    public boolean wasNull;

    private int timestampPrecision;
    private ByteBuffer buffer;
    Semaphore semaphore = new Semaphore(0);
    public int returnCode = 0;

    public TSDBResultSetBlockData(List colMeta, int numOfCols, int timestampPrecision) {
        this.columnMetaDataList = colMeta;
        this.colData = new ArrayList<>(numOfCols);
        this.timestampPrecision = timestampPrecision;
    }

    public TSDBResultSetBlockData(List colMeta, int timestampPrecision) {
        this.columnMetaDataList = colMeta;
        this.colData = new ArrayList<>();
        this.timestampPrecision = timestampPrecision;
    }

    public TSDBResultSetBlockData() {
        this.colData = new ArrayList<>();
    }

    public void clear() {
        int size = this.colData.size();
        this.colData.clear();
        setNumOfCols(size);
    }

    public int getNumOfRows() {
        return this.numOfRows;
    }

    public void setNumOfRows(int numOfRows) {
        this.numOfRows = numOfRows;
    }

    public int getNumOfCols() {
        return this.colData.size();
    }

    public void setNumOfCols(int numOfCols) {
        this.colData = new ArrayList<>(numOfCols);
    }

    public boolean hasMore() {
        return this.rowIndex < this.numOfRows;
    }

    public boolean forward() {
        if (this.rowIndex > this.numOfRows) {
            return false;
        }

        return ((++this.rowIndex) < this.numOfRows);
    }

    public void reset() {
        this.rowIndex = 0;
    }
    public void setByteArray(byte[] value) {
        byte[] copy = new byte[value.length];
        System.arraycopy(value, 0, copy, 0, value.length);
        buffer = ByteBuffer.wrap(copy);
    }
    public void doSetByteArray() {
        buffer.order(ByteOrder.LITTLE_ENDIAN);
        int bitMapOffset = BitmapLen(numOfRows);
        int pHeader = 28 + columnMetaDataList.size() * 5;
        buffer.position(pHeader);
        List lengths = new ArrayList<>(columnMetaDataList.size());
        for (int i = 0; i < columnMetaDataList.size(); i++) {
            lengths.add(buffer.getInt());
        }
        pHeader = buffer.position();
        int length = 0;
        for (int i = 0; i < columnMetaDataList.size(); i++) {
            List