com.ibatis.common.jdbc.logging.ResultSetLogProxy Maven / Gradle / Ivy

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some enhanced features added for ibatis.
There is a newer version: 0.0.8
package com.ibatis.common.jdbc.logging;

import com.github.bingoohuang.ibatis.BlackcatUtils;
import com.ibatis.common.beans.ClassInfo;
import com.ibatis.common.logging.Log;
import com.ibatis.common.logging.LogFactory;

import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.sql.ResultSet;

/**
 * ResultSet proxy to add logging
 */
public class ResultSetLogProxy extends BaseLogProxy implements InvocationHandler {

    private static final Log log = LogFactory.getLog(ResultSet.class);

    boolean first = true;
    private ResultSet rs;

    private ResultSetLogProxy(ResultSet rs) {
        super();
        this.rs = rs;
        if (log.isDebugEnabled()) {
            log.debug("{rset-" + id + "} ResultSet");
        }
    }

    public Object invoke(Object proxy, Method method, Object[] params) throws Throwable {
        try {
            Object o = method.invoke(rs, params);
            if (GET_METHODS.contains(method.getName())) {
                if (params[0] instanceof String) {
                    setColumn(params[0], rs.wasNull() ? null : o);
                }
            } else if ("next".equals(method.getName())
                    || "close".equals(method.getName())) {
                String s = getValueString();
                if (!"[]".equals(s)) {
                    if (first) {
                        first = false;
                        String columnString = getColumnString();
                        if (BlackcatUtils.HasBlackcat) {
                            BlackcatUtils.log("SQL.Header", columnString);
                            BlackcatUtils.log("SQL.Result", s);
                        }

                        if (log.isDebugEnabled()) {
                            log.debug("{rset-" + id + "} Header: " + columnString);
                        }
                    }

                    BlackcatUtils.log("SQL.Result", s);
                    if (log.isDebugEnabled()) {
                        log.debug("{rset-" + id + "} Result: " + s);
                    }
                }
                clearColumnInfo();
            }
            return o;
        } catch (Throwable t) {
            throw ClassInfo.unwrapThrowable(t);
        }
    }

    /**
     * Creates a logging version of a ResultSet
     *
     * @param rs - the ResultSet to proxy
     * @return - the ResultSet with logging
     */
    public static ResultSet newInstance(ResultSet rs) {
        InvocationHandler handler = new ResultSetLogProxy(rs);
        ClassLoader cl = ResultSet.class.getClassLoader();
        return (ResultSet) Proxy.newProxyInstance(
                cl, new Class[]{ResultSet.class}, handler);
    }

    /**
     * Get the wrapped result set
     *
     * @return the resultSet
     */
    public ResultSet getRs() {
        return rs;
    }

}