com.bixuebihui.shardingjdbc.core.util.DataSourceUtil Maven / Gradle / Ivy

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a fast small database connection pool and a active record flavor mini framework

There is a newer version: 1.15.3.3

package com.bixuebihui.shardingjdbc.core.util;

import com.google.common.base.CaseFormat;

import javax.sql.DataSource;
import java.lang.reflect.Method;
import java.util.Collection;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;

/**
 * Data source utility class.
 *
 * @author zhangliang
 * @version $Id: $Id
 */
public final class DataSourceUtil {

    private static final String SET_METHOD_PREFIX = "set";

    private static final Collection> GENERAL_CLASS_TYPE;

    static {
        GENERAL_CLASS_TYPE = Set.of(boolean.class, Boolean.class, int.class, Integer.class, long.class, Long.class, String.class);
    }

    /**
     * Get data source.
     *
     * @param dataSourceClassName data source class name
     * @param dataSourceProperties data source properties
     * @return data source instance
     * @throws java.lang.ReflectiveOperationException reflective operation exception
     */
    public static DataSource getDataSource(final String dataSourceClassName, final Map dataSourceProperties) throws ReflectiveOperationException {
        DataSource result = (DataSource) Class.forName(dataSourceClassName).getDeclaredConstructor().newInstance();
        for (Entry entry : dataSourceProperties.entrySet()) {
            callSetterMethod(result, getSetterMethodName(entry.getKey()), null == entry.getValue() ? null : entry.getValue().toString());
        }
        return result;
    }

    private static String getSetterMethodName(final String propertyName) {
        if (propertyName.contains("-")) {
            return CaseFormat.LOWER_HYPHEN.to(CaseFormat.LOWER_CAMEL, SET_METHOD_PREFIX + "-" + propertyName);
        }
        return SET_METHOD_PREFIX + String.valueOf(propertyName.charAt(0)).toUpperCase() + propertyName.substring(1);
    }

    private static void callSetterMethod(final DataSource dataSource, final String methodName, final String setterValue) {
        for (Class each : GENERAL_CLASS_TYPE) {
            try {
                Method method = dataSource.getClass().getMethod(methodName, each);
                if (boolean.class == each || Boolean.class == each) {
                    method.invoke(dataSource, Boolean.valueOf(setterValue));
                } else if (int.class == each || Integer.class == each) {
                    method.invoke(dataSource, Integer.parseInt(setterValue));
                } else if (long.class == each || Long.class == each) {
                    method.invoke(dataSource, Long.parseLong(setterValue));
                } else {
                    method.invoke(dataSource, setterValue);
                }
                return;
            } catch (final ReflectiveOperationException ex) {
            }
        }
    }
}