/*
* Copyright 2004-2023 H2 Group. Multiple-Licensed under the MPL 2.0,
* and the EPL 1.0 (https://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package org.h2.engine;
import java.util.Arrays;
import java.util.Comparator;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
import org.h2.api.ErrorCode;
import org.h2.message.DbException;
import org.h2.util.Utils;
/**
* The base class for settings.
*/
public class SettingsBase {
private final HashMap<String, String> settings;
protected SettingsBase(HashMap<String, String> 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, Boolean.toString(defaultValue));
try {
return Utils.parseBoolean(s, defaultValue, true);
} catch (IllegalArgumentException e) {
throw DbException.get(ErrorCode.DATA_CONVERSION_ERROR_1,
e, "key:" + key + " value:" + s);
}
}
/**
* Set an entry in the key-value pair.
*
* @param key the key
* @param value the value
*/
void set(String key, boolean value) {
settings.put(key, Boolean.toString(value));
}
/**
* 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, Integer.toString(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) {
String v = settings.get(key);
if (v != null) {
return v;
}
StringBuilder buff = new StringBuilder("h2.");
boolean nextUpper = false;
for (int i = 0, l = key.length(); i < l; i++) {
char c = key.charAt(i);
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();
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<String, String> getSettings() {
return settings;
}
/**
* Get all settings in alphabetical order.
*
* @return the settings
*/
public Entry<String, String>[] getSortedSettings() {
@SuppressWarnings("unchecked")
Map.Entry<String, String>[] entries = settings.entrySet().toArray(new Map.Entry[0]);
Arrays.sort(entries, Comparator.comparing(Entry::getKey));
return entries;
}
}