private void readProperties(Properties info) {
Object[] list = new Object[info.size()];
info.keySet().toArray(list);
DbSettings s = null;
// 可在info中配三种参数，相关文档见:E:\H2\my-h2\my-h2-docs\999 可配置的参数汇总.java中的1、2、3项
for (Object k : list) {
String key = StringUtils.toUpperEnglish(k.toString());
if (prop.containsKey(key)) {
throw DbException.get(ErrorCode.DUPLICATE_PROPERTY_1, key);
}
Object value = info.get(k);
// 支持org.h2.command.dml.SetTypes中的参数和ConnectionInfo与connectionTime相关的参数
if (isKnownSetting(key)) {
prop.put(key, value);
} else {
if (s == null) {
s = getDbSettings();
}
// org.h2.constant.DbSettings中的参数
if (s.containsKey(key)) {
prop.put(key, value);
}
}
}
}
public DbSettings getDbSettings() {
DbSettings defaultSettings = DbSettings.getDefaultSettings();
HashMap<String, String> s = New.hashMap();
for (Object k : prop.keySet()) {
String key = k.toString();
if (!isKnownSetting(key) && defaultSettings.containsKey(key)) {
s.put(key, prop.getProperty(key));
}
}
return DbSettings.getInstance(s);
}
private void readSettingsFromURL() {
// 如url=jdbc:h2:tcp://localhost:9092/test9;optimize_distinct=true;early_filter=true;nested_joins=false
DbSettings defaultSettings = DbSettings.getDefaultSettings();
int idx = url.indexOf(';'); // 用";"号来分隔参数，第一个";"号表明url和参数的分界，之后的";"号用来分隔多个参数
if (idx >= 0) {
// optimize_distinct=true;early_filter=true;nested_joins=false
String settings = url.substring(idx + 1);
// jdbc:h2:tcp://localhost:9092/test9
url = url.substring(0, idx);
// [optimize_distinct=true, early_filter=true, nested_joins=false]
String[] list = StringUtils.arraySplit(settings, ';', false);
for (String setting : list) {
if (setting.length() == 0) {
continue;
}
int equal = setting.indexOf('=');
if (equal < 0) {
throw getFormatException();
}
String value = setting.substring(equal + 1);
String key = setting.substring(0, equal);
key = StringUtils.toUpperEnglish(key);
// info中除了可以配三种参数外(相关文档见:E:\H2\my-h2\my-h2-docs\999 可配置的参数汇总.java中的1、2、3项)
// 还可以配其他参数，但是被忽略
// 但是url中只能配三种参数
if (!isKnownSetting(key) && !defaultSettings.containsKey(key)) {
throw DbException.get(ErrorCode.UNSUPPORTED_SETTING_1, key);
}
// 不能与info中的参数重复(如果值相同就不会报错)
// 例子见my.test.ConnectionInfoTest
String old = prop.getProperty(key);
if (old != null && !old.equals(value)) {
throw DbException.get(ErrorCode.DUPLICATE_PROPERTY_1, key);
}
prop.setProperty(key, value);
}
}
}