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The Waikato Environment for Knowledge Analysis (WEKA), a machine
learning workbench. This version represents the developer version, the
"bleeding edge" of development, you could say. New functionality gets added
to this version.
/*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see > m_settings =
new LinkedHashMap>();
/**
* The name of the store that these settings should be saved/loaded to/from
*/
protected String m_storeName = "";
/**
* The name of the entry within the store to save to
*/
protected String m_ID = "";
/**
* Load the settings with ID m_ID from store m_storeName.
*
* @throws IOException if a problem occurs
*/
@SuppressWarnings("unchecked")
public void loadSettings() throws IOException {
MetaStore store = new XMLFileBasedMetaStore();
Map> loaded =
(Map>) store.getEntry(m_storeName, m_ID,
Map.class);
if (loaded != null) {
m_settings = loaded;
}
// unwrap EnumHelper/FontHelper/FileHelper instances
for (Map s : m_settings.values()) {
for (Map.Entry e : s.entrySet()) {
if (e.getValue() instanceof EnumHelper) {
SettingKey key = e.getKey();
EnumHelper eHelper = (EnumHelper) e.getValue();
try {
// get the actual enumerated value
Object actualValue =
EnumHelper.valueFromString(eHelper.getEnumClass(),
eHelper.getSelectedEnumValue());
s.put(key, actualValue);
} catch (Exception ex) {
throw new IOException(ex);
}
} else if (e.getValue() instanceof FontHelper) {
SettingKey key = e.getKey();
FontHelper fHelper = (FontHelper) e.getValue();
Font f = fHelper.getFont();
s.put(key, f);
} else if (e.getValue() instanceof FileHelper) {
SettingKey key = e.getKey();
FileHelper fileHelper = (FileHelper) e.getValue();
File f = fileHelper.getFile();
s.put(key, f);
}
}
}
}
/**
* Construct a new Settings object to be stored in the supplied store under
* the given ID/name
*
* @param storeName the name of the store to load/save to in the metastore
* @param ID the ID/name to use
*/
public Settings(String storeName, String ID) {
m_storeName = storeName;
m_ID = ID;
try {
loadSettings();
} catch (IOException ex) {
throw new IllegalStateException(ex);
}
}
/**
* Get the ID used for these settings
*
* @return the ID used
*/
public String getID() {
return m_ID;
}
/**
* Get the store name for these settings
*
* @return the store name
*/
public String getStoreName() {
return m_storeName;
}
/**
* Applies a set of default settings. If the ID of default settings is not
* known then a new entry is made for it. Otherwise we examine all settings in
* the default set supplied and add any that we don't have a value for.
*
* @param defaults the defaults to apply
*/
public void applyDefaults(Defaults defaults) {
if (defaults == null) {
return;
}
Map settingsForID = m_settings.get(defaults.getID());
if (settingsForID == null) {
settingsForID = new LinkedHashMap();
m_settings.put(defaults.getID(), settingsForID);
}
// add all settings that don't exist in the set we loaded for this ID
for (Map.Entry e : defaults.getDefaults().entrySet()) {
if (!settingsForID.containsKey(e.getKey())) {
settingsForID.put(e.getKey(), e.getValue());
}
}
}
/**
* Get the settings for a given ID
*
* @param settingsID the ID to get settings for
* @return a map of settings, or null if the given ID is unknown
*/
public Map getSettings(String settingsID) {
return m_settings.get(settingsID);
}
/**
* Get a list of settings IDs
*
* @return a list of the settings IDs managed by this settings instance
*/
public Set getSettingsIDs() {
return m_settings.keySet();
}
public T
getSetting(String ID, String key, T defaultValue, Environment env) {
SettingKey tempKey = new SettingKey(key, "", "");
return getSetting(ID, tempKey, defaultValue, env);
}
/**
* Get the value of a setting
*
* @param ID the ID for settings map to lookup (typically the ID of a
* perspective)
* @param key the name of the setting value to lookup
* @param defaultValue the default value to use if the setting is not known
* @param the type of the vaue
* @return the setting value, or the default value if not found
*/
public T getSetting(String ID, SettingKey key, T defaultValue) {
return getSetting(ID, key, defaultValue, Environment.getSystemWide());
}
/**
* Get the value of a setting
*
* @param ID the ID for settings map to lookup (typically the ID of a
* perspective)
* @param key the name of the setting value to lookup
* @param defaultValue the default value to use if the setting is not known
* @param env environment variables to use. String setting values will have
* environment variables replaced automatically
* @param the type of the vaue
* @return the setting value, or the default value if not found
*/
// TOOD new...
@SuppressWarnings("unchecked")
public T getSetting(String ID, SettingKey key, T defaultValue,
Environment env) {
Map settingsForID = m_settings.get(ID);
T value = null;
if (settingsForID != null && settingsForID.size() > 0) {
value = (T) settingsForID.get(key);
if (value instanceof String) {
try {
value = (T) env.substitute((String) value);
} catch (Exception ex) {
// ignore
}
}
}
if (value == null) {
// Next is environment
if (env != null) {
String val = env.getVariableValue(key.getKey());
if (val != null) {
value = stringToT(val, defaultValue);
}
}
}
// Try system props
if (value == null) {
String val = System.getProperty(key.getKey());
if (val != null) {
value = stringToT(val, defaultValue);
}
}
return value != null ? value : defaultValue;
}
/**
* Set a value for a setting.
*
* @param ID the for the settings map to store the setting in (typically the
* ID of a perspective or application)
* @param propName the name of the setting to store
* @param value the value of the setting to store
*/
public void setSetting(String ID, SettingKey propName, Object value) {
Map settingsForID = m_settings.get(ID);
if (settingsForID == null) {
settingsForID = new LinkedHashMap();
m_settings.put(ID, settingsForID);
}
settingsForID.put(propName, value);
}
/**
* Returns true if there are settings available for a given ID
*
* @param settingsID the ID to check
* @return true if there are settings available for that ID
*/
public boolean hasSettings(String settingsID) {
return m_settings.containsKey(settingsID);
}
/**
* Returns true if a given setting has a value
*
* @param settingsID the ID of the settings group
* @param propName the actual setting to check for
* @return true if the setting has a value
*/
public boolean hasSetting(String settingsID, String propName) {
if (!hasSettings(settingsID)) {
return false;
}
return m_settings.get(settingsID).containsKey(propName);
}
/**
* Save the settings to the metastore
*
* @throws IOException if a problem occurs
*/
public void saveSettings() throws IOException {
// shallow copy settings so that we can wrap any enums in EnumHelper
// objects before persisting
Map> settingsCopy =
new LinkedHashMap>();
for (Map.Entry> e : m_settings.entrySet()) {
Map s = new LinkedHashMap();
settingsCopy.put(e.getKey(), s);
for (Map.Entry ee : e.getValue().entrySet()) {
if (ee.getValue() instanceof Enum) {
EnumHelper wrapper = new EnumHelper((Enum) ee.getValue());
s.put(ee.getKey(), wrapper);
} else if (ee.getValue() instanceof Font) {
FontHelper wrapper = new FontHelper((Font) ee.getValue());
s.put(ee.getKey(), wrapper);
} else if (ee.getValue() instanceof File) {
FileHelper wrapper = new FileHelper((File) ee.getValue());
s.put(ee.getKey(), wrapper);
} else {
s.put(ee.getKey(), ee.getValue());
}
}
}
XMLFileBasedMetaStore store = new XMLFileBasedMetaStore();
if (m_settings.size() > 0) {
store.storeEntry(m_storeName, m_ID, settingsCopy);
}
}
/**
* Convert a setting value stored in a string to type T
*
* @param propVal the value of the setting as a string
* @param defaultVal the default value for the setting (of type T)
* @param the type of the setting
* @return the setting as an instance of type T
*/
protected static T stringToT(String propVal, T defaultVal) {
if (defaultVal instanceof String) {
return (T) propVal;
}
if (defaultVal instanceof Boolean) {
return (T) (Boolean.valueOf(propVal));
}
if (defaultVal instanceof Double) {
return (T) (Double.valueOf(propVal));
}
if (defaultVal instanceof Integer) {
return (T) (Integer.valueOf(propVal));
}
if (defaultVal instanceof Long) {
return (T) (Long.valueOf(propVal));
}
if (defaultVal instanceof LoggingLevel) {
return (T) (LoggingLevel.stringToLevel(propVal));
}
return null;
}
/**
* Class implementing a key for a setting. Has a unique key, description, tool
* tip text and map of arbitrary other metadata
*/
public static class SettingKey implements java.io.Serializable {
/** Key for this setting */
protected String m_key;
/** Description/display name of the seting */
protected String m_description;
/** Tool tip for the setting */
protected String m_toolTip;
/** Pick list (can be null if not applicable) for a string-based setting */
protected List m_pickList;
/**
* Metadata for this setting - e.g. file property could specify whether it
* is files only, directories only or both
*/
protected Map m_meta;
/**
* Construct a new empty setting key
*/
public SettingKey() {
this("", "", "");
}
/**
* Construct a new SettingKey with the given key, description and tool tip
* text
*
* @param key the key of this SettingKey
* @param description the description (display name of the setting)
* @param toolTip the tool tip text for the setting
*/
public SettingKey(String key, String description, String toolTip) {
this(key, description, toolTip, null);
}
/**
* Construct a new SettingKey with the given key, description, tool tip and
* pick list
*
* @param key the key of this SettingKey
* @param description the description (display name of the setting)
* @param toolTip the tool tip for the setting
* @param pickList an optional list of legal values for a string setting
*/
public SettingKey(String key, String description, String toolTip,
List pickList) {
m_key = key;
m_description = description;
m_toolTip = toolTip;
m_pickList = pickList;
}
/**
* set the key of this setting
*
* @param key the key to use
*/
public void setKey(String key) {
m_key = key;
}
/**
* Get the key of this setting
*
* @return the key of this setting
*/
public String getKey() {
return m_key;
}
/**
* Set the description (display name) of this setting
*
* @param description the description of this setting
*/
public void setDescription(String description) {
m_description = description;
}
/**
* Get the description (display name) of this setting
*
* @return the description of this setting
*/
public String getDescription() {
return m_description;
}
/**
* Set the tool tip text for this setting
*
* @param toolTip the tool tip text to use
*/
public void setToolTip(String toolTip) {
m_toolTip = toolTip;
}
/**
* Get the tool tip text for this setting
*
* @return the tool tip text to use
*/
public String getToolTip() {
return m_toolTip;
}
/**
* Set the value of a piece of metadata for this setting
*
* @param key the key for the metadata
* @param value the value of the metadata
*/
public void setMetadataElement(String key, String value) {
if (m_meta == null) {
m_meta = new HashMap();
}
m_meta.put(key, value);
}
/**
* Get a piece of metadata for this setting
*
* @param key the key of the metadata
* @return the corresponding value, or null if the key is not known
*/
public String getMetadataElement(String key) {
if (m_meta == null) {
return null;
}
return m_meta.get(key);
}
/**
* Get a peice of metadata for this setting
*
* @param key the key of the metadata
* @param defaultValue the default value for the metadata
* @return the corresponding value, or the default value if the key is not
* known
*/
public String getMetadataElement(String key, String defaultValue) {
String result = getMetadataElement(key);
return result == null ? defaultValue : result;
}
/**
* Set the metadata for this setting
*
* @param metadata the metadata for this setting
*/
public void setMetadata(Map metadata) {
m_meta = metadata;
}
/**
* Get the metadata for this setting
*
* @return the metadata for this setting
*/
public Map getMetadata() {
return m_meta;
}
/**
* Get the optional pick list for the setting
*
* @return the optional pick list for the setting (can be null if not
* applicable)
*/
public List getPickList() {
return m_pickList;
}
/**
* Set the optional pick list for the setting
*
* @param pickList the optional pick list for the setting (can be null if
* not applicable)
*/
public void setPickList(List pickList) {
m_pickList = pickList;
}
/**
* Hashcode based on the key
*
* @return the hashcode of this setting
*/
@Override
public int hashCode() {
return m_key.hashCode();
}
/**
* Compares two setting keys for equality
*
* @param other the other setting key to compare to
* @return true if this setting key is equal to the supplied one
*/
@Override
public boolean equals(Object other) {
if (!(other instanceof SettingKey)) {
return false;
}
return m_key.equals(((SettingKey) other).getKey());
}
/**
* Return the description (display name) of this setting
*
* @return the description of this setting
*/
@Override
public String toString() {
return m_description;
}
}
}
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