demo-tabledata-redis/src/main/java/com/fr/plugin/db/redis/core/RedisScriptTableDataModel.java

package com.fr.plugin.db.redis.core;

import com.fr.data.AbstractDataModel;
import com.fr.plugin.db.redis.core.emb.Redis;
import com.fr.plugin.db.redis.help.RedisClient;
import com.fr.plugin.db.redis.help.RedisClientSelector;
import com.fr.plugin.db.redis.help.client.SimpleDataModel;

import java.util.ArrayList;
import java.util.List;

/**
 * @author richie
 * @version 10.0
 * Created by richie on 2019-03-18
 */
public class RedisScriptTableDataModel extends AbstractDataModel {

    private RedisDatabaseConnection mc;
    private String script;
    private int dbIndex;
    private int rowCount;
    private List<List<Object>> data = new ArrayList<List<Object>>();
    private String[] columnNames = null;

    public RedisScriptTableDataModel(RedisDatabaseConnection mc, int dbIndex, String script, int rowCount) {
        this.mc = mc;
        this.script = script;
        this.dbIndex = dbIndex;
        this.rowCount = rowCount;
    }

    private void buildData() {
        if (columnNames != null) {
            return;
        }
        Redis redis = mc.createRedisClient();
        redis.getClient().select(dbIndex);
        RedisClient redisClient = RedisClientSelector.select(redis);
        SimpleDataModel simple = redisClient.build(redis, script, rowCount);
        if (simple != null) {
            this.columnNames = simple.getColumnNames();
            this.data = simple.getData();
            this.rowCount = simple.getRowCount();
        }
    }


    @Override
    public int getColumnCount() {
        buildData();
        return columnNames == null ? 0 : columnNames.length;
    }

    @Override
    public String getColumnName(int i) {
        buildData();
        return columnNames == null ? null : columnNames[i];
    }

    @Override
    public int getRowCount() {
        buildData();
        return data.size();
    }

    @Override
    public Object getValueAt(int rowIndex, int columnIndex) {
        buildData();
        if (data != null && data.size() > rowIndex) {
            List<Object> rowData = data.get(rowIndex);
            if (rowData != null && rowData.size() > columnIndex) {
                return rowData.get(columnIndex);
            }
        }
        return null;
    }

    @Override
    public void release() throws Exception {

    }
}