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

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

import com.fr.base.Parameter;
import com.fr.base.TableData;
import com.fr.base.TemplateUtils;
import com.fr.config.holder.Conf;
import com.fr.config.holder.factory.Holders;
import com.fr.config.holder.factory.XmlHolders;
import com.fr.data.AbstractParameterTableData;
import com.fr.data.core.DataCoreXmlUtils;
import com.fr.data.impl.Connection;
import com.fr.data.impl.NameDatabaseConnection;
import com.fr.file.DatasourceManager;
import com.fr.general.data.DataModel;
import com.fr.general.xml.GeneralXMLTools;
import com.fr.intelli.record.Focus;
import com.fr.intelli.record.Original;
import com.fr.plugin.db.redis.core.order.OrderValue;
import com.fr.plugin.db.redis.core.order.impl.NumberOrderValue;
import com.fr.record.analyzer.EnableMetrics;
import com.fr.script.Calculator;
import com.fr.stable.ArrayUtils;
import com.fr.stable.ParameterProvider;
import com.fr.stable.StringUtils;
import com.fr.stable.xml.XMLPrintWriter;
import com.fr.stable.xml.XMLableReader;

import java.util.HashMap;
import java.util.Map;


@EnableMetrics
public class RedisTableData extends AbstractParameterTableData {

    private Conf<Connection> database = Holders.obj(null, Connection.class);
    private Conf<OrderValue> dbIndex = XmlHolders.obj(new NumberOrderValue(0), OrderValue.class);
    private Conf<String> query = Holders.simple(StringUtils.EMPTY);

    public void setDatabase(Connection c) {
        this.database.set(c);
    }

    public Connection getDatabase() {
        return database.get();
    }

    public OrderValue getOrderValue() {
        return dbIndex.get();
    }

    public void setOrderValue(OrderValue dbIndex) {
        this.dbIndex.set(dbIndex);
    }

    public String getQuery() {
        return query.get();
    }

    public void setQuery(String query) {
        this.query.set(query);
    }

    public void setParameters(ParameterProvider[] providers) {
        super.setDefaultParameters(providers);
    }

    @Override
    public DataModel createDataModel(Calculator calculator) {
        return createDataModel(calculator, TableData.RESULT_ALL);
    }

    @Override
    @Focus(id = RedisConstants.PLUGIN_ID, text = "Plugin-Redis_DB", source = Original.PLUGIN)
    public DataModel createDataModel(Calculator calculator, int rowCount) {
        Parameter[] ps = Parameter.providers2Parameter(getParameters(calculator));
        Connection connection = database.get();
        if (connection instanceof NameDatabaseConnection) {
            String name = ((NameDatabaseConnection) connection).getName();
            RedisDatabaseConnection rc = DatasourceManager.getProviderInstance().getConnection(name, RedisDatabaseConnection.class);
            if (rc != null) {
                OrderValue orderValue = dbIndex.get();
                return new RedisTableDataModel(calculator, ps, rc,
                        orderValue == null ? 0 : orderValue.toIndex(calculator, ps),
                        calculateQuery(query.get(), ps),
                        rowCount);
            }
        }
        return null;
    }

    private String calculateQuery(String query, Parameter[] ps) {
        if (ArrayUtils.isEmpty(ps)) {
            return query;
        }
        Map<String, Object> map = new HashMap<String, Object>();
        for (Parameter p : ps) {
            map.put(p.getName(), p.getValue());
        }
        try {
            return TemplateUtils.renderParameter4Tpl(query, map);
        } catch (Exception e) {
            return query;
        }
    }

    public void readXML(XMLableReader reader) {
        super.readXML(reader);

        if (reader.isChildNode()) {
            String tmpName = reader.getTagName();
            String tmpVal;

            if (OrderValue.XML_TAG.equals(tmpName)) {
                OrderValue orderValue = (OrderValue) GeneralXMLTools.readXMLable(reader);
                if (orderValue != null) {
                    setOrderValue(orderValue);
                }
            } else if (com.fr.data.impl.Connection.XML_TAG.equals(tmpName)) {
                if (reader.getAttrAsString("class", null) != null) {
                    com.fr.data.impl.Connection con = DataCoreXmlUtils.readXMLConnection(reader);
                    this.setDatabase(con);
                }
            } else if ("Query".equals(tmpName)) {
                tmpVal = reader.getElementValue();
                if (isNotNullValue(tmpVal)) {
                    this.setQuery(tmpVal);
                }
            }
        }
    }

    @Override
    public void writeXML(XMLPrintWriter writer) {
        super.writeXML(writer);
        GeneralXMLTools.writeXMLable(writer, dbIndex.get(), OrderValue.XML_TAG);
        if (this.database.get() != null) {
            DataCoreXmlUtils.writeXMLConnection(writer, this.database.get());
        }
        writer.startTAG("Query").textNode(getQuery()).end();
    }

    private boolean isNotNullValue(String value) {
        return value != null && !"null".equals(value);
    }

    @Override
    public Object clone() throws CloneNotSupportedException {
        RedisTableData cloned = (RedisTableData) super.clone();
        cloned.database = (Conf<Connection>) database.clone();
        cloned.query = (Conf<String>) query.clone();
        cloned.dbIndex = (Conf<OrderValue>) dbIndex.clone();
        return cloned;
    }
}