File	Doc	Category	Size	Date	Package
ResourceBundleELResolver.java	API Doc	Glassfish v2 API	11362	Fri Feb 17 14:04:54 GMT 2006	javax.el

ResourceBundleELResolver

• java.lang.Object
  • javax.el.ELResolver

Fields Summary

Constructors Summary

Methods Summary
public java.lang.Class	getCommonPropertyType(javax.el.ELContext context, java.lang.Object base) If the base object is a ResourceBundle, returns the most general type that this resolver accepts for the property argument. Otherwise, returns null. Assuming the base is a ResourceBundle, this method will always return String.class. param context The context of this evaluation. param base The bundle to analyze. Only bases of type ResourceBundle are handled by this resolver. return null if base is not a ResourceBundle; otherwise String.class. if (base instanceof ResourceBundle) { return String.class; } return null;
public java.util.Iterator	getFeatureDescriptors(javax.el.ELContext context, java.lang.Object base) If the base object is a ResourceBundle, returns an Iterator containing the set of keys available in the ResourceBundle. Otherwise, returns null. The Iterator returned must contain zero or more instances of {@link java.beans.FeatureDescriptor}. Each info object contains information about a key in the ResourceBundle, and is initialized as follows: displayName - The String key name - Same as displayName property. shortDescription - Empty string expert - false hidden - false preferred - true In addition, the following named attributes must be set in the returned FeatureDescriptors: {@link ELResolver#TYPE} - String.class {@link ELResolver#RESOLVABLE_AT_DESIGN_TIME} - true param context The context of this evaluation. param base The bundle whose keys are to be iterated over. Only bases of type ResourceBundle are handled by this resolver. return An Iterator containing zero or more (possibly infinitely more) FeatureDescriptor objects, each representing a key in this bundle, or null if the base object is not a ResourceBundle. if (base instanceof ResourceBundle) { ResourceBundle bundle = (ResourceBundle) base; List features = new ArrayList(); String key = null; FeatureDescriptor desc = null; for (Enumeration e = bundle.getKeys(); e.hasMoreElements();) { key = (String) e.nextElement(); desc = new FeatureDescriptor(); desc.setDisplayName(key); desc.setExpert(false); desc.setHidden(false); desc.setName(key); desc.setPreferred(true); desc.setValue(TYPE, String.class); desc.setValue(RESOLVABLE_AT_DESIGN_TIME, Boolean.TRUE); features.add(desc); } return features.iterator(); } return null;
public java.lang.Class	getType(javax.el.ELContext context, java.lang.Object base, java.lang.Object property) If the base object is an instance of ResourceBundle, return null, since the resolver is read only. If the base is ResourceBundle, the propertyResolved property of the ELContext object must be set to true by this resolver, before returning. If this property is not true after this method is called, the caller should ignore the return value. param context The context of this evaluation. param base The ResourceBundle to analyze. param property The name of the property to analyze. return If the propertyResolved property of ELContext was set to true, then null; otherwise undefined. throws NullPointerException if context is null if (context == null) { throw new NullPointerException(); } if (base instanceof ResourceBundle) { context.setPropertyResolved(true); } return null;
public java.lang.Object	getValue(javax.el.ELContext context, java.lang.Object base, java.lang.Object property) If the base object is an instance of ResourceBundle, the provided property will first be coerced to a String. The Object returned by getObject on the base ResourceBundle will be returned. If the base is ResourceBundle, the propertyResolved property of the ELContext object must be set to true by this resolver, before returning. If this property is not true after this method is called, the caller should ignore the return value. param context The context of this evaluation. param base The ResourceBundle to analyze. param property The name of the property to analyze. Will be coerced to a String. return If the propertyResolved property of ELContext was set to true, then null if property is null; otherwise the Object for the given key (property coerced to String) from the ResourceBundle. If no object for the given key can be found, then the String "???" + key + "???". throws NullPointerException if context is null throws ELException if an exception was thrown while performing the property or variable resolution. The thrown exception must be included as the cause property of this exception, if available. if (context == null) { throw new NullPointerException(); } if (base instanceof ResourceBundle) { context.setPropertyResolved(true); if (property != null) { try { return ((ResourceBundle) base).getObject(property .toString()); } catch (MissingResourceException e) { return "???" + property + "???"; } } } return null;
public boolean	isReadOnly(javax.el.ELContext context, java.lang.Object base, java.lang.Object property) If the base object is not null and an instanceof {@link ResourceBundle}, return true. param context The context of this evaluation. param base The ResourceBundle to be modified. Only bases that are of type ResourceBundle are handled. param property The String property to use. return If the propertyResolved property of ELContext was set to true, then true; otherwise undefined. throws NullPointerException if context is null if (context == null) { throw new NullPointerException(); } if (base instanceof ResourceBundle) { context.setPropertyResolved(true); return true; } return false;
public void	setValue(javax.el.ELContext context, java.lang.Object base, java.lang.Object property, java.lang.Object value) If the base object is a ResourceBundle, throw a {@link PropertyNotWritableException}. param context The context of this evaluation. param base The ResourceBundle to be modified. Only bases that are of type ResourceBundle are handled. param property The String property to use. param value The value to be set. throws NullPointerException if context is null. throws PropertyNotWritableException Always thrown if base is an instance of ReasourceBundle. if (context == null) { throw new NullPointerException(); } if (base instanceof ResourceBundle) { context.setPropertyResolved(true); throw new PropertyNotWritableException( "ResourceBundles are immutable"); }