org.h2.engine.SettingsBase Maven / Gradle / Ivy
/*
* Copyright 2004-2011 H2 Group. Multiple-Licensed under the H2 License,
* Version 1.0, and under the Eclipse Public License, Version 1.0
* (http://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package org.h2.engine;
import java.util.HashMap;
import org.h2.constant.ErrorCode;
import org.h2.message.DbException;
import org.h2.util.Utils;
/**
* The base class for settings.
*/
public class SettingsBase {
private HashMap settings;
protected SettingsBase(HashMap s) {
this.settings = s;
}
/**
* Get the setting for the given key.
*
* @param key the key
* @param defaultValue the default value
* @return the setting
*/
protected boolean get(String key, boolean defaultValue) {
String s = get(key, "" + defaultValue);
try {
return Boolean.valueOf(s).booleanValue();
} catch (NumberFormatException e) {
throw DbException.get(ErrorCode.DATA_CONVERSION_ERROR_1, e, "key:" + key + " value:" + s);
}
}
/**
* Get the setting for the given key.
*
* @param key the key
* @param defaultValue the default value
* @return the setting
*/
protected int get(String key, int defaultValue) {
String s = get(key, "" + defaultValue);
try {
return Integer.decode(s);
} catch (NumberFormatException e) {
throw DbException.get(ErrorCode.DATA_CONVERSION_ERROR_1, e, "key:" + key + " value:" + s);
}
}
/**
* Get the setting for the given key.
*
* @param key the key
* @param defaultValue the default value
* @return the setting
*/
protected String get(String key, String defaultValue) {
StringBuilder buff = new StringBuilder("h2.");
boolean nextUpper = false;
for (char c : key.toCharArray()) {
if (c == '_') {
nextUpper = true;
} else {
// Character.toUpperCase / toLowerCase ignores the locale
buff.append(nextUpper ? Character.toUpperCase(c) : Character.toLowerCase(c));
nextUpper = false;
}
}
String sysProperty = buff.toString();
String v = settings.get(key);
if (v == null) {
v = Utils.getProperty(sysProperty, defaultValue);
settings.put(key, v);
}
return v;
}
/**
* Check if the settings contains the given key.
*
* @param k the key
* @return true if they do
*/
protected boolean containsKey(String k) {
return settings.containsKey(k);
}
/**
* Get all settings.
*
* @return the settings
*/
public HashMap getSettings() {
return settings;
}
}