Examples of java.beans.IntrospectionException

java.beans.IntrospectionException
Thrown when an exception happens during Introspection.
Typical causes include not being able to map a string class name to a Class object, not being able to resolve a string method name, or specifying a method name that has the wrong type signature for its intended use.

            if (pd == null)
            {
               if (isStrict)
               {
                  String msg = "No property found for: "+name+" on JavaBean: "+bean;
                  throw new IntrospectionException(msg);
               }
               else
               {
                  // since is not strict, ignore that this property was not found
                  continue;

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            throws IntrospectionException {


        super(propertyName, null, null);
        
        if (propertyName == null || propertyName.length() == 0) {
            throw new IntrospectionException("bad property name: " +
                    propertyName + " on class: " + beanClass.getClass().getName());
        }


        setName(propertyName);
        String base = capitalizePropertyName(propertyName);
        
        // Look for mapped read method and matching write method
        Method mappedReadMethod = null;
        Method mappedWriteMethod = null;
        try {
            try {
                mappedReadMethod = getMethod(beanClass, "get" + base,
                        STRING_CLASS_PARAMETER);
            } catch (IntrospectionException e) {
                mappedReadMethod = getMethod(beanClass, "is" + base,
                        STRING_CLASS_PARAMETER);
            }
            Class[] params = { String.class, mappedReadMethod.getReturnType() };
            mappedWriteMethod = getMethod(beanClass, "set" + base, params);
        } catch (IntrospectionException e) {
            /* Swallow IntrospectionException
             * TODO: Why?
             */
        }
        
        // If there's no read method, then look for just a write method 
        if (mappedReadMethod == null) {
            mappedWriteMethod = getMethod(beanClass, "set" + base, 2);
        }


        if ((mappedReadMethod == null) && (mappedWriteMethod == null)) {
            throw new IntrospectionException("Property '" + propertyName +
                    "' not found on " +
                    beanClass.getName());
        }
        mappedReadMethodRef  = new MappedMethodReference(mappedReadMethod);
        mappedWriteMethodRef = new MappedMethodReference(mappedWriteMethod);

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            throws IntrospectionException {


        super(propertyName, null, null);


        if (propertyName == null || propertyName.length() == 0) {
            throw new IntrospectionException("bad property name: " +
                    propertyName);
        }
        setName(propertyName);


        // search the mapped get and set methods

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            throws IntrospectionException {


        super(propertyName, mappedGetter, mappedSetter);


        if (propertyName == null || propertyName.length() == 0) {
            throw new IntrospectionException("bad property name: " +
                    propertyName);
        }


        setName(propertyName);
        mappedReadMethodRef  = new MappedMethodReference(mappedGetter);

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            Method mappedReadMethod  = getMappedReadMethod();
            Method mappedWriteMethod = getMappedWriteMethod();
            Class mappedPropertyType = null;
            if (mappedReadMethod != null) {
                if (mappedReadMethod.getParameterTypes().length != 1) {
                    throw new IntrospectionException
                            ("bad mapped read method arg count");
                }
                mappedPropertyType = mappedReadMethod.getReturnType();
                if (mappedPropertyType == Void.TYPE) {
                    throw new IntrospectionException
                            ("mapped read method " +
                            mappedReadMethod.getName() + " returns void");
                }
            }


            if (mappedWriteMethod != null) {
                Class[] params = mappedWriteMethod.getParameterTypes();
                if (params.length != 2) {
                    throw new IntrospectionException
                            ("bad mapped write method arg count");
                }
                if (mappedPropertyType != null &&
                        mappedPropertyType != params[1]) {
                    throw new IntrospectionException
                            ("type mismatch between mapped read and write methods");
                }
                mappedPropertyType = params[1];
            }
            mappedPropertyTypeRef = new SoftReference(mappedPropertyType);

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        if (method != null) {
            return method;
        }


        // No Method found
        throw new IntrospectionException("No method \"" + methodName +
                "\" with " + parameterCount + " parameter(s)");
    }

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        }


        int parameterCount = (parameterTypes == null) ? 0 : parameterTypes.length;


        // No Method found
        throw new IntrospectionException("No method \"" + methodName +
                "\" with " + parameterCount + " parameter(s) of matching types.");
    }

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    public MappedPropertyDescriptor(String propertyName, Class beanClass)
            throws IntrospectionException {


        super(propertyName, null, null);
        if (propertyName == null || propertyName.length() == 0) {
            throw new IntrospectionException("bad property name");
        }
        setName(propertyName);
        String base = capitalize(propertyName);


        // Look for mapped get and set methods
        try {
            mappedReadMethod = findMethod(beanClass, "get" + base, 1,
                                          stringClassArray);
            Class params[] =
                { String.class, mappedReadMethod.getReturnType() };
            mappedWriteMethod = findMethod(beanClass, "set" + base, 2,
                                           params);
        } catch (IntrospectionException e) {
            ;
        }
        if ((mappedReadMethod == null) && (mappedWriteMethod == null))
            throw new IntrospectionException("Property '" + propertyName +
                                             "' not found on " +
                                             beanClass.getName());
        findMappedPropertyType();


    }

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    String mappedGetterName, String mappedSetterName)
    throws IntrospectionException {


        super(propertyName, null, null);
        if (propertyName == null || propertyName.length() == 0) {
            throw new IntrospectionException("bad property name");
        }
        setName(propertyName);


        // search the mapped get and set methods
        mappedReadMethod =

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        Method mappedGetter, Method mappedSetter)
        throws IntrospectionException {


        super(propertyName, mappedGetter, mappedSetter);
        if (propertyName == null || propertyName.length() == 0) {
            throw new IntrospectionException("bad property name");
        }
        setName(propertyName);
        mappedReadMethod = mappedGetter;
        mappedWriteMethod = mappedSetter;
        findMappedPropertyType();

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