*/
package mir.config;
-import multex.Exc;
-import multex.Failure;
-
-import org.apache.commons.configuration.PropertiesConfiguration;
-
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
-
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
-
import javax.servlet.ServletContext;
+import multex.Exc;
+import multex.Failure;
+
+import org.apache.commons.collections.ExtendedProperties;
+
/**
* @author idefix
*/
-public class MirPropertiesConfiguration extends PropertiesConfiguration {
+public class MirPropertiesConfiguration extends ExtendedProperties {
private static MirPropertiesConfiguration instance;
private static ServletContext context;
private static String contextPath;
+ //if one of these properties is not present a new
+ //property is added with its default value;
+ private static NeededProperty[] neededWithValue =
+ {
+ new NeededProperty("Producer.DocRoot", ""),
+ new NeededProperty("Producer.ImageRoot", ""),
+ new NeededProperty("Producer.Image.Path", ""),
+ new NeededProperty("Producer.Media.Path", ""),
+ new NeededProperty("Producer.RealMedia.Path", ""),
+ new NeededProperty("Producer.Image.IconPath", "")
+ };
+
/**
* Constructor for MirPropertiesConfiguration.
*/
private MirPropertiesConfiguration(ServletContext ctx, String ctxPath)
throws IOException {
- super(ctx.getRealPath("/WEB-INF/etc/") + "/config.properties",
- ctx.getRealPath("/WEB-INF/etc/") + "/default.properties");
- this.addProperty("Home", ctx.getRealPath("/WEB-INF/") + "/");
- this.addProperty("RootUri", ctxPath);
+ //loading the defaults-config
+ super(ctx.getRealPath("/WEB-INF/") + "/default.properties");
+ //loading the user-config
+ ExtendedProperties userConfig =
+ new ExtendedProperties(ctx.getRealPath("/WEB-INF/etc/") + "/config.properties");
+ //merging them to one config while overriding the defaults
+ this.combine(userConfig);
+ addProperty("Home", ctx.getRealPath("/WEB-INF/") + "/");
+ checkMissing();
}
public static synchronized MirPropertiesConfiguration instance()
throws PropertiesConfigExc {
if (instance == null) {
- if ((context == null) || (contextPath == null) ||
- (contextPath.length() == 0)) {
+ if (context == null) {
throw new MirPropertiesConfiguration.PropertiesConfigExc(
"Context was not set");
}
}
/**
- * Sets the contextPath.
- * @param contextPath The contextPath to set
+ * Returns the context.
+ * @return ServletContext
*/
- public static void setContextPath(String contextPath) {
- MirPropertiesConfiguration.contextPath = contextPath;
+ public static ServletContext getContext() {
+ return context;
}
+ /**
+ * Returns all properties in a Map
+ * @return Map
+ */
public Map allSettings() {
Iterator iterator = this.getKeys();
Map returnMap = new HashMap();
-
while (iterator.hasNext()) {
String key = (String) iterator.next();
- returnMap.put(key, this.getProperty(key));
+ Object o = this.getProperty(key);
+
+ if (o == null) {
+ o = new Object();
+ }
+
+ returnMap.put(key, o);
}
return returnMap;
}
/**
- * Returns the context.
- * @return ServletContext
+ * Returns a String-property concatenated with the home-dir of the
+ * installation
+ * @param key
+ * @return String
*/
- public static ServletContext getContext() {
- return context;
- }
-
public String getStringWithHome(String key) {
String returnString = getString(key);
return getString("Home") + returnString;
}
+ /**
+ * Checks if one property is missing and adds a default value
+ */
+ private void checkMissing() {
+ for (int i = 0; i < neededWithValue.length; i++) {
+ if (super.getProperty(neededWithValue[i].getKey()) == null) {
+ addProperty(neededWithValue[i].getKey(), neededWithValue[i].getValue());
+ }
+ }
+ }
+
public File getFile(String key) throws FileNotFoundException {
String path = getStringWithHome(key);
File returnFile = new File(path);
}
/**
+ * @return the vlaue of this property as String
+ * @param key the key of this property
* @see org.apache.commons.configuration.Configuration#getString(java.lang.String)
*/
public String getString(String key) {
- if (super.getString(key) == null) {
+ return getString(key, "");
+ }
+
+
+ /**
+ * @return the value of this property as String
+ * @param key the key of the property
+ * @param defaultValue the default value of this property if it is null
+ * @see org.apache.commons.collections.ExtendedProperties#getString(java.lang.String, java.lang.String)
+ */
+ public String getString(String key, String defaultValue) {
+ Object object = getProperty(key);
+ if(object == null){
+ if (defaultValue == null) {
+ return new String();
+ }
+ return defaultValue;
+ }
+ if (object instanceof String) {
+ return (String)object;
+ }
+ return object.toString();
+ }
+
+ /**
+ * Returns a property according to the given key
+ * @param key the key of the property
+ * @return the value of the property as Object, if no property available it returns a empty String
+ * @see org.apache.commons.configuration.Configuration#getString(java.lang.String)
+ */
+ public Object getProperty(String key) {
+ if (super.getProperty(key) == null) {
return new String();
}
- return super.getString(key);
+ return super.getProperty(key);
}
-
+
/**
* @author idefix
*/
super(msg, cause);
}
}
+
+ /**
+ * A Class for properties to be checked
+ * @author idefix
+ */
+ private static class NeededProperty {
+ private String _key;
+ private String _value;
+
+ public NeededProperty(String key, String value) {
+ _key = key;
+ _value = value;
+ }
+
+ public String getKey() {
+ return _key;
+ }
+
+ public String getValue() {
+ return _value;
+ }
+ }
}
projects / mir.git / blobdiff