io.shardingjdbc.core.util.DataSourceUtil Maven / Gradle / Ivy
package io.shardingjdbc.core.util;
import com.google.common.base.CaseFormat;
import com.google.common.collect.Sets;
import lombok.AccessLevel;
import lombok.NoArgsConstructor;
import javax.sql.DataSource;
import java.lang.reflect.Method;
import java.util.Collection;
import java.util.Map;
import java.util.Map.Entry;
/**
* Data source utility class.
*
* @author zhangliang
*/
@NoArgsConstructor(access = AccessLevel.PRIVATE)
public final class DataSourceUtil {
private static final String SET_METHOD_PREFIX = "set";
private static Collection> generalClassType;
static {
generalClassType = Sets.>newHashSet(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 ReflectiveOperationException reflective operation exception
*/
public static DataSource getDataSource(final String dataSourceClassName, final Map dataSourceProperties) throws ReflectiveOperationException {
DataSource result = (DataSource) Class.forName(dataSourceClassName).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, propertyName.length());
}
private static void callSetterMethod(final DataSource dataSource, final String methodName, final String setterValue) {
for (Class each : generalClassType) {
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) {
}
}
}
}