io.shardingjdbc.core.constant.ShardingProperties Maven / Gradle / Ivy
/*
* Copyright 1999-2015 dangdang.com.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package io.shardingjdbc.core.constant;
import io.shardingjdbc.core.util.StringUtil;
import com.google.common.base.Joiner;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Properties;
import java.util.Set;
/**
* The properties for Sharding-JDBC configuration.
*
* @author gaohongtao
* @author zhangliang
*/
public final class ShardingProperties {
private final Properties props;
public ShardingProperties(final Properties props) {
this.props = props;
validate();
}
private void validate() {
Set propertyNames = props.stringPropertyNames();
Collection errorMessages = new ArrayList<>(propertyNames.size());
for (String each : propertyNames) {
ShardingPropertiesConstant shardingPropertiesConstant = ShardingPropertiesConstant.findByKey(each);
if (null == shardingPropertiesConstant) {
continue;
}
Class type = shardingPropertiesConstant.getType();
String value = props.getProperty(each);
if (type == boolean.class && !StringUtil.isBooleanValue(value)) {
errorMessages.add(getErrorMessage(shardingPropertiesConstant, value));
continue;
}
if (type == int.class && !StringUtil.isIntValue(value)) {
errorMessages.add(getErrorMessage(shardingPropertiesConstant, value));
continue;
}
if (type == long.class && !StringUtil.isLongValue(value)) {
errorMessages.add(getErrorMessage(shardingPropertiesConstant, value));
}
}
if (!errorMessages.isEmpty()) {
throw new IllegalArgumentException(Joiner.on(" ").join(errorMessages));
}
}
private String getErrorMessage(final ShardingPropertiesConstant shardingPropertiesConstant, final String invalidValue) {
return String.format("Value '%s' of '%s' cannot convert to type '%s'.", invalidValue, shardingPropertiesConstant.getKey(), shardingPropertiesConstant.getType().getName());
}
/**
* Get property value.
*
* @param shardingPropertiesConstant sharding properties constant
* @param class type of return value
* @return property value
*/
@SuppressWarnings("unchecked")
public T getValue(final ShardingPropertiesConstant shardingPropertiesConstant) {
String result = props.getProperty(shardingPropertiesConstant.getKey(), shardingPropertiesConstant.getDefaultValue());
if (boolean.class == shardingPropertiesConstant.getType()) {
return (T) Boolean.valueOf(result);
}
if (int.class == shardingPropertiesConstant.getType()) {
return (T) Integer.valueOf(result);
}
if (long.class == shardingPropertiesConstant.getType()) {
return (T) Long.valueOf(result);
}
return (T) result;
}
}