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BeanELResolver.javaAPI DocApache Tomcat 6.0.149700Fri Jul 20 04:20:32 BST 2007javax.el

BeanELResolver

public class BeanELResolver extends ELResolver

Fields Summary
private final boolean
readOnly
private final ConcurrentCache
cache
Constructors Summary
public BeanELResolver()


	  
		this.readOnly = false;
public BeanELResolver(boolean readOnly)

		this.readOnly = readOnly;
Methods Summary
public java.lang.ClassgetCommonPropertyType(javax.el.ELContext context, java.lang.Object base)

		if (context == null) {
			throw new NullPointerException();
		}

		if (base != null) {
			return Object.class;
		}

		return null;
public java.util.IteratorgetFeatureDescriptors(javax.el.ELContext context, java.lang.Object base)

		if (context == null) {
			throw new NullPointerException();
		}

		if (base == null) {
			return null;
		}

		try {
			BeanInfo info = Introspector.getBeanInfo(base.getClass());
			PropertyDescriptor[] pds = info.getPropertyDescriptors();
			for (int i = 0; i < pds.length; i++) {
				pds[i].setValue(RESOLVABLE_AT_DESIGN_TIME, Boolean.TRUE);
				pds[i].setValue(TYPE, pds[i].getPropertyType());
			}
			return Arrays.asList((FeatureDescriptor[]) pds).iterator();
		} catch (IntrospectionException e) {
			//
		}

		return null;
private static final java.lang.reflect.MethodgetMethod(java.lang.Class type, java.lang.reflect.Method m)

		if (m == null || Modifier.isPublic(type.getModifiers())) {
			return m;
		}
		Class[] inf = type.getInterfaces();
		Method mp = null;
		for (int i = 0; i < inf.length; i++) {
			try {
				mp = inf[i].getMethod(m.getName(), (Class[]) m.getParameterTypes());
				mp = getMethod(mp.getDeclaringClass(), mp);
				if (mp != null) {
					return mp;
				}
			} catch (NoSuchMethodException e) {
			}
		}
		Class sup = type.getSuperclass();
		if (sup != null) {
			try {
				mp = sup.getMethod(m.getName(), (Class[]) m.getParameterTypes());
				mp = getMethod(mp.getDeclaringClass(), mp);
				if (mp != null) {
					return mp;
				}
			} catch (NoSuchMethodException e) {
			}
		}
		return null;
public java.lang.ClassgetType(javax.el.ELContext context, java.lang.Object base, java.lang.Object property)

		if (context == null) {
			throw new NullPointerException();
		}
		if (base == null || property == null) {
			return null;
		}

		context.setPropertyResolved(true);
		return this.property(context, base, property).getPropertyType();
public java.lang.ObjectgetValue(javax.el.ELContext context, java.lang.Object base, java.lang.Object property)

		if (context == null) {
			throw new NullPointerException();
		}
		if (base == null || property == null) {
			return null;
		}

		context.setPropertyResolved(true);
		Method m = this.property(context, base, property).read(context);
		try {
			return m.invoke(base, (Object[]) null);
		} catch (IllegalAccessException e) {
			throw new ELException(e);
		} catch (InvocationTargetException e) {
			throw new ELException(message(context, "propertyReadError",
					new Object[] { base.getClass().getName(),
							property.toString() }), e.getCause());
		} catch (Exception e) {
			throw new ELException(e);
		}
public booleanisReadOnly(javax.el.ELContext context, java.lang.Object base, java.lang.Object property)

		if (context == null) {
			throw new NullPointerException();
		}
		if (base == null || property == null) {
			return false;
		}

		context.setPropertyResolved(true);
		return this.readOnly
				|| this.property(context, base, property).isReadOnly();
private final javax.el.BeanELResolver$BeanPropertyproperty(javax.el.ELContext ctx, java.lang.Object base, java.lang.Object property)

		Class<?> type = base.getClass();
		String prop = property.toString();

		BeanProperties props = this.cache.get(type.getName());
		if (props == null || type != props.getType()) {
			props = new BeanProperties(type);
			this.cache.put(type.getName(), props);
		}

		return props.get(ctx, prop);
public voidsetValue(javax.el.ELContext context, java.lang.Object base, java.lang.Object property, java.lang.Object value)

		if (context == null) {
			throw new NullPointerException();
		}
		if (base == null || property == null) {
			return;
		}

		context.setPropertyResolved(true);

		if (this.readOnly) {
			throw new PropertyNotWritableException(message(context,
					"resolverNotWriteable", new Object[] { base.getClass()
							.getName() }));
		}

		Method m = this.property(context, base, property).write(context);
		try {
			m.invoke(base, value);
		} catch (IllegalAccessException e) {
			throw new ELException(e);
		} catch (InvocationTargetException e) {
			throw new ELException(message(context, "propertyWriteError",
					new Object[] { base.getClass().getName(),
							property.toString() }), e.getCause());
		} catch (Exception e) {
			throw new ELException(e);
		}